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1
Rosmiati. "Eksplanasi Ilmiah dampak El Nino La Nina". Mangifera Edu 2, n. 1 (31 luglio 2017): 32–41. http://dx.doi.org/10.31943/mangiferaedu.v2i1.16.
Testo completoAbstract (sommario):
Indonesia sebagai salah satu negara yang memiliki pulau pulau besar dan kecil berada di daerah tropis, menerima radiasi matahari paling banyak serta dipengaruhi oleh berbagai fenomena atmosfer menyebabkan wilayah ini rentan terhadap variabilitas dan perubahan iklim. Iklim di Indonesia tidak akan selalu berjalan secara normal setiap tahunnya, ada suatu saat terjadi penurunan curah hujan namun di saat yang lain terjadi curah hujan yang tinggi sehingga menyebabkan banjir. Sebagian masyarakat beranggapan bahwa terjadinya banjir dan kemarau panjang diakibatkan oleh dosa-dosa manusia, diantaranya adanya berjudi, membunuh, merampok dll. Hal ini memerlukan Eksplanasi Ilmiah agar dapat memberikan jawaban terhadap pertanyaan-pertanyaan tentang adanya penyebab penurunan curah hujan atau terjadi nya kekeringan dan terjadinya curah hujan atau bencana banjir di Indonesia. Sesuatu dieksplanasi secara ilmiah jika memenuhi dua syarat, yaitu syarat relevan eksplantori dan syarat testabilitas, syarat pertama eksplanasi ilmiah dapat terpenuhi dengan menggunakan penjelasan dan pengertian El Nino dan La Nina yang merupakan salah satu bentuk penyimpangan iklim di Samudera Pasifik yang ditandai dengan kenaikan suhu permukaan laut di daerah katulistiwa bagian tengah dan timur, Sedangkan La Nina sebaliknya dari El Nino. Dengan penjelasan dan pengertian El Nino dan La Nina yang memenuhi syarat kedua eksplanasi ilmiah yaitu dampak El Nino adalah terjadinya kekeringan dan dampak El Nina adalah terjadinya musim hujan. Hal ini sesuai dengan hakikat pembuktian keilmuan adalah kepercayaan bahwa suatu pernyataan dan pengertian mempunyai peluang besar untuk terbukti ataubenar.
2
Utami, Arini Wahyu, Jamhari Jamhari e Suhatmini Hardyastuti. "EL NINO, LA NINA, DAN PENAWARAN PANGAN DI JAWA, INDONESIA". Jurnal Ekonomi Pembangunan: Kajian Masalah Ekonomi dan Pembangunan 12, n. 2 (1 dicembre 2011): 257. http://dx.doi.org/10.23917/jep.v12i2.197.
Testo completoAbstract (sommario):
Paddy and maize are two important food crops in Indonesia and mainly produced in Java Island. This research aimed to know the impact of El Nino and La Nina on paddy and maize farmer’s supply in Java. Cross sectional data from four provinces in Java was combined with time series data during 1987-2006. Paddy supply was estimated using log model, while maize supply used autoregressive model; each was estimated using two types of regression function. First, it included dummy variable of El Nino and La Nina to know their influence into paddy and maize supply. Second, Southern Oscillation Index was used to analyze the supply changing when El Nino or La Nina occur. The result showed that El Nino and La Nina did not influence paddy supply, while La Nina influenced maize supply in Java. Maize supply increased when La Nina occurred.
3
Purnama, Dendi Rona, Kiagus Ardi Zulistyawan, Bayu Christian e Desak Putu Okta Veanti. "DAMPAK TERJADINYA EL NINO/LA NINA TERHADAP INTENSITAS, MASA HIDUP DAN FREKUENSI SIKLON". Jurnal Meteorologi Klimatologi dan Geofisika 5, n. 2 (29 aprile 2019): 10–21. http://dx.doi.org/10.36754/jmkg.v5i2.54.
Testo completoAbstract (sommario):
Fenomena badai siklon adalah salah satu bencana hidrometeorologi yang paling merusak di Bumi. Siklon bisa terjadi di kawasan yang dipengaruhi aktivitas El Nino (La Nina). Siklon tropis maupun El Nino dapat menyebabkan kondisi cuaca atau iklim ekstrim di daerah tropis. Pada kajian ini, dilakukan kajian mengenai dampak fenomena El Nino (La Nina) terhadap besar kecilnya badai siklon (intensitas siklon) di sekitar wilayah Indonesia. Besar kecilnya badai siklon tersebut diklasifikasikan dengan menggunakan Skala Saffir-Simpson. Selain intensitas, dikaji pula hubungan El Nino (La Nina) dengan masa hidup dan frekuensi kemunculan fenomena siklon di sekitar wilayah Indonesia. Penelitian ini akan membandingkan data siklon pada tahun ketika terjadi peristiwa El Nino (La Nina) dengan data siklon pada tahun ketika tidak terjadi peristiwa El Nino (La Nina). Dalam kajian ini, digunakan data siklon selama 10 tahun (2007-2017) dari situs JAXA (Japan Aerospace Exploration Agency). Selain itu, digunakan juga data indeks El Nino dalam Nino 3.4 sebagai data aktivitas ENSO. Metode yang digunakan dalam penelitian ini menggunakan metode statistik. Dari hasil analisis tersebut, secara umum diperoleh bahwa El Nino (La Nina) memiliki pengaruh positif yang signifikan terhadap intensitas dan masa hidup siklon di sekitar wilayah Indonesia. Secara khusus, El Nino (La Nina) memiliki pengaruh positif yang signifikan terhadap intensitas dan masa hidup siklon di wilayah utara ekuator. Sementara itu, di selatan ekuator tidak menunjukan korelasi yang signifikan. Pengaruh El Nino (La Nina) terhadap frekuensi siklon belum dapat terlihat dengan jelas pada penelitian ini sehingga diperlukan penelitian lebih lanjut mengenai hal ini.
4
Yuniasih, Betti, Wandi Nusa Harahap e Dimas Agung Satya Wardana. "Anomali Iklim El Nino dan La Nina di Indonesia pada 2013-2022". AGROISTA : Jurnal Agroteknologi 6, n. 2 (1 febbraio 2023): 136–43. http://dx.doi.org/10.55180/agi.v6i2.332.
Testo completoAbstract (sommario):
Climate anomaly phenomena are increasing in frequency and duration along with the occurance of global warming phenomena. El Nino and La Nina climate anomalies have a direct impact on agriculture. This study aims to analyze the occurrence of extreme climate phenomena El Nino and La Nina in 2012-2022 in Indonesia and their impact on rainfall in South Sumatera Province which is one of the centers of oil palm plantations. The research was conducted by identifying sea surface temperature (SST) anomalies in the Pacific Ocean and classifying them into El Nino and La Nina strength levels or normal conditions. Based on the sea surface temperature anomaly, it is known that Indonesia experienced strong El Nino events in 2014-2015 and weak El Nino in 2019. El Nino causes a prolonged dry season and decreases the amount of rainfall. The La Nina phenomenon occurs in 2020-2022 with weak to moderate strength. La Nina causes a prolonged rainy season and an increase in the amount of rainfall. Normal conditions occurred in 2013, 2016, 2017 and 2018 which were marked by sst anomalies of not more than +0.5°C and -0.5 °C. During normal conditions, South Sumatra Province has an annual rainfall of 2,500 mm, rainfall is evenly distributed throughout the year, and dry months are less than 3 months that suitable for oil palm cultivation. In the last 10 years, Indonesia has experienced the El Nino and La Nina climate anomalies with increasing frequency, duration, and level of strength.
5
Lal, Devi, e Sompal Singh. "Impact of El-Nino and La-Nina Episodes on Rainfall Variability and Crop Yield". International Journal of Environment and Climate Change 13, n. 10 (2 settembre 2023): 2046–51. http://dx.doi.org/10.9734/ijecc/2023/v13i102865.
Testo completoAbstract (sommario):
El Nino and La Nina events have an impact on the Indian monsoon in terms of less rainfall than average and more rainfall in La Nina years. El-Nino events are more likely to see rainfall variability during the monsoon and depressions over the Bay of Bengal (July-August). ENSO is a disruption in ocean surface temperatures and atmospheric circulation over the Pacific Ocean leading to wide spread changes in rainfall/precipitation regimes around the world. El Nino years' effects on crop production in India as a result of lower rainfall during the south-west monsoon. In the kharif season (June to September), crops suffer from moisture and have lower yields in El-Nino years, but the opposite in La-Nina years. The El Nino is associate with the possibility of drought like situation at many occasions and La Nina is the opposite of El-Nino events.
6
Greenland, David. "El Nino". Ecology 75, n. 4 (giugno 1994): 1189. http://dx.doi.org/10.2307/1939443.
Testo completo
7
Barbaro, Paolo. "Nino Migliori". History of Photography 24, n. 3 (settembre 2000): 209–13. http://dx.doi.org/10.1080/03087298.2000.10443403.
Testo completo
8
Cane, M. A. "EL Nino". Annual Review of Earth and Planetary Sciences 14, n. 1 (maggio 1986): 43–70. http://dx.doi.org/10.1146/annurev.ea.14.050186.000355.
Testo completo
9
Nangimah, Siti Lailatul, Samuel Laimeheriwa e Reny Tomasoa. "Dampak Fenomena El Nino dan La Nina Terhadap Keseimbangan Air Lahan Pertanian dan Periode Tumbuh Tersedia di Daerah Waeapo Pulau Buru". JURNAL BUDIDAYA PERTANIAN 14, n. 2 (1 dicembre 2018): 66–74. http://dx.doi.org/10.30598/jbdp.2018.14.2.66.
Testo completoAbstract (sommario):
The study aimed to determine the years of events El Nino and La Nina, analyze the effects of El Nino and La Nina events on water balance, and determine the available growing periods in Waeapo areas under various rainfall conditions. Climate data analysis was carried out with the following stages: a) generation of rainfall data; b) analysis of extreme rainfall of El Nino and La Nina; c) calculation of land water balance using the Thornthwaite-Mather method; and d) determination of available growing period under various rainfall conditions. The results showed that in the last 30 years in the Waeapo area, there were eight times of a phenomenon of extreme dry rainfall (El-Nino), with an average intensity of once every three years. The phenomenon of extreme wet rainfall (La-Nina) occurred six times with an average intensity of once every five years. Based on the calculation of land water balance, during El-Nino rainfall conditions, there was an annual groundwater deficit of 403 mm or 172% of normal conditions, whereas during La-Nina rainfall conditions there was a surplus of annual groundwater of 775 mm or 222% of normal conditions. When an El-Nino phenomenon occurred, the available growing period was only five months (January to May), and when the La-Nina phenomenon occurred, the growing period was available throughout the year (12 months).
Keywords: El Nino, La Nina, land water balance, available growing period, Buru Island
ABSTRAK
Penelitian bertujuan untuk menentukan tahun-tahun kejadian El Nino dan La Nina, menganalisis dampak kejadian El Nino dan La Nina terhadap neraca air lahan, dan menetapkan periode tumbuh tersedia di daerah Waeapo pada berbagai kondisi curah hujan. Analisis data iklim dilakukan dengan tahapan sebagai berikut: a) pembangkitan data curah hujan; b) analisis curah hujan ekstrim El Nino dan La Nina; c) perhitungan neraca air lahan menggunakan metode Thornthwaite-Mather; dan d) penentuan periode tumbuh tersedia pada berbagai kondisi curah hujan. Hasil penelitian menunjukkan bahwa dalam periode 30 tahun terakhir di Daerah Waeapo sudah terjadi fenomena curah hujan ekstrem kering (El Nino) sebanyak delapan kali, dengan intensitas rata-rata tiga tahun sekali. Dan fenomena curah hujan ekstrem basah (La Nina) terjadi sebanyak enam kali dengan intensitas rata-rata lima tahun sekali. Berdasarkan perhitungan neraca air lahan, pada kondisi curah hujan El Nino terjadi defisit air tanah tahunan sebesar 403 mm atau 172% dari kondisi normalnya, sebaliknya pada kondisi curah hujan La Nina terjadi surplus air tanah tahunan sebesar 775 mm atau 222% dari kondisi normalnya. Ketika terjadi fenomena El Nino periode tumbuh yang tersedia hanya lima bulan (Januari s.d Mei), dan ketika terjadi fenomena La-Nina periode tumbuh berlangsung sepanjang tahun (12 bulan).
Kata kunci: El Nino, La Nina, neraca air lahan, periode tumbuh tersedia, Pulau Buru
10
Dewi, Sri Mai, e Marzuki Marzuki. "Analisis Pengaruh Pergeseran Lokasi ENSO terhadap Curah Hujan di Indonesia". Jurnal Fisika Unand 9, n. 2 (9 novembre 2020): 176–82. http://dx.doi.org/10.25077/jfu.9.2.176-182.2020.
Testo completoAbstract (sommario):
ENSO (El Nino Southern Oscillation) merupakan gejala penyimpangan suhu permukaan laut di Samudera Pasifik bagian timur dari kondisi normal. Penelitian ini menganalisis dampak dari perbedaan posisi pusat ENSO terhadap curah hujan di Indonesia. Posisi pusat ENSO ditentukan berdasarkan indeks terbesar dari empat indeks Nino selama tahun 1982-2016. Posisi pusat ENSO didefinisikan jauh, menengah dan dekat dari Indonesia ketika indek Nino yang terbesar berturut-turut adalah Nino 1+2, Nino 3 dan Nino 3,4, serta Nino 4. Intensitas curah hujan di setiap posisi ENSO diamati menggunakan data Global Precipitation Climatology Centre (GPCC). Rata-rata curah hujan bulanan pada saat pusat El Nino jauh dari Indonesia lebih tinggi di kawasan Indonesia bagian timur. Selain itu, selama pusat El Nino jauh dari Indonesia, kondisi yang lebih kering teramati di sebagian besar wilayah Indonesia bagian barat dan tengah. Pada sisi lain, rata-rata intensitas curah hujan bulanan pada saat La Nina menengah lebih tinggi dibandingkan La Nina jauh. Perbedaan intensitas curah hujan dari setiap posisi ENSO ini selaras dengan perbedaan pergerakan udara ke atas yang tergambar dari nilai omega dari data reanalisis NCEP dan NCAR. Dengan demikian, posisi ENSO mempengaruhi curah hujan di Indonesia walaupun dampaknya tidak seragam. ENSO (El Nino Southern Oscillation) is a periodic fluctuation in sea surface temperature and other meteorological parameters across the equatorial Pacific Ocean. This study investigates the impact of ENSO's central position on rainfall pattern in Indonesia. The location of the ENSO was determined by the largest index of four Nino indexes during 1982-2016 and itis defined far, medium and close to Indonesia when the largest Nino indexes are Nino 1+2, Nino 3 and Nino 3.4, and Nino 4. Rainfall intensity at each ENSO position was observed using Global Precipitation Climatology Centre (GPCC) data. Average monthly rainfall when the El Nino central position is far from Indonesia is higher in the eastern part of Indonesia. In addition, when the El Nino central position is far from Indonesia, drier conditions are observed in large parts of western and central Indonesia. On the other hand, the average intensity of monthly rainfall during medium position of La Nina is higher than that for La Nina cases with the central position being far from Indonesia. The difference in rainfall intensity from each ENSO position coincides with the difference in upward air movement which is reflected by the omega values from the NCEP and NCAR. reanalysis data. Thus, the position of ENSO influences rainfall in Indonesia even though the impact is not uniform.
11
Sanfilippo, Matteo. "100 anni di Nino Manfredi. Uno, nessuno, cento Nino". Altreitalie, n. 62 (15 gennaio 2021): 140–42. http://dx.doi.org/10.4000/altreitalie.460.
Testo completo
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Pesoth, Christianto, Joice R. T. S. L. Rimper, Veibe Warouw, Rose O. S. E. Mantiri e Deiske Adeliene Sumilat. "Analysis Of The Effect Of El Niño La Nina And Sea Level Temperatures On Chlorophyll-A Concentrations In The Waters Of The Maluku Sea". Jurnal Ilmiah PLATAX 12, n. 1 (1 maggio 2024): 326–36. http://dx.doi.org/10.35800/jip.v12i1.52236.
Testo completoAbstract (sommario):
Global weather phenomena cannot be separated from the interaction between the ocean and the atmosphere. El Nino and La Nina are phenomena that were related to the interaction of the sea and the atmosphere which affects many aspects, including the fertility of waters. Indicators of the fertility of water could be determined from the distribution of sea surface temperature and chlorophyll-a concentration. This study aims to analyze variations in the distribution of sea surface temperature and chlorophyll-a in the Maluku Sea when the El Nino and La Nina phenomena are activated. The results showed that when the El Nino phenomenon was activated, there was a decrease in sea surface temperature and an increase in the concentration of chlorophyll-a from normal conditions. Besides, when the La Nina phenomenon was activated, there was an increase in sea surface temperature and a decrease in the concentration of chlorophyll-a from normal conditions. Spatial interpretation when El Nino and La Nina are activated showed low values with a distribution indicating the mixed proceed for the sea surface temperature parameter and showed higher values with an even distribution for the chlorophyll-a parameter. Keywords: Sea Surface Temperature, Chlorophyll-a, El Nino, La Nina. Abstrak Fenomena cuaca secara global tidak bisa lepas kaitannya dengan interaksi antara laut dan atmosfer. El Nino dan La Nina merupakan salah satu fenomena yang berkaitan dengan interaksi laut dan atmosfer yang berpengaruh terhadap banyak aspek termasuk kesuburan suatu perairan. Indikator kesuburan suatu perairan dapat ditentukan dari distribusi suhu permukaan laut dan konsentrasi klorofil-a. Penelitian ini bertujuan untuk menganalisa variasi distribusi suhu permukaan laut dan klorofil-a di perairan Laut Maluku saat fenomena El Nino dan La Nina aktif. Hasil penelitian menunjukkan bahwa saat fenomena El Nino aktif terjadi penurunan suhu permukaan laut dan peningkatan konsentrasi klorofil-a dari kondisi normal. Sebaliknya saat fenomena La Nina aktif terjadi peningkatan suhu permukaan laut dan penurunan konsentrasi klorofil-a dari kondisi normal. Interpretasi spasial saat El Nino dan La Nina aktif menunjukkan nilai yang rendah dengan sebaran yang menunjukkan proses mixing untuk parameter suhu permukaan laut, dan menunjukkan nilai yang lebih tinggi dengan sebaran merata untuk parameter klorofil-a. Kata kunci: Suhu Permukaan Laut, Klorofil-a, El Nino, La Nina.
13
Athirah Suhailah Jalil e Yan-Ling Tan. "Impacts of El Nino and La Nina on Palm Oil Production: Evidence from Selected Palm Oil Producing Countries". Insight Journal 8 (7 aprile 2021): 108–19. http://dx.doi.org/10.24191/ij.v8i0.107.
Testo completoAbstract (sommario):
Palm oil is one of the most important edible oils commercialized in world oils and fats market. However, agriculture is highly vulnerable to climate change. For instance, El Nino is the warm phase of El Nino Southern Oscillation (ENSO) while La Nina is the opposite of El Nino, the cold phase of ENSO. Strong El Nino and La Nina events cause global changes especially in temperature and rainfall, subsequently affect agricultural areas and causing considerable economic losses. Therefore, the objective of this study is to explore the impacts of El Nino and La Nina on palm oil production in selected palm oil producing countries namely Indonesia, Malaysia and Thailand from 1980 to 2019 using the Ordinary Least Square (OLS) multiple regression analysis. The results revealed that area harvested and palm oil price affect palm oil production significantly in all palm oil producing countries. Nevertheless, the ENSO effects are not apparent. Only the El Nino dummy coefficients are negative and statistically significant in Thailand, suggesting that the occurrence of El Nino events is more pronounced than the La Nina events on palm oil production in Thailand. Hence, this study suggests that a good water management system is needed to allow the palm oil to achieve optimum production.
14
Indriyati, Liestiana, e Uli Mahanani. "PENGARUH LA NINA DAN EL NINO TERHADAP PENYAKIT DEMAM BERDARAH DENGUE DAN MALARIA DI INDONESIA". EnviroScienteae 20, n. 1 (4 marzo 2024): 90. http://dx.doi.org/10.20527/es.v20i1.18877.
Testo completoAbstract (sommario):
The phenomena of El nino and La nina are closely related to rainfall and its impact on various fields. Rainfall is an element of weather and climate that greatly influences all aspects of life including health, especially mosquito vector-borne diseases in Indonesia such as Dengue hemorrhagic fever (DHF), malaria, chikungunya, zika, and others. In this regard, an analytical study was carried out on the effect of El nino and La nina on DHF and malaria cases in Indonesia. This paper is the result of data analysis from the study "The Influence of El nino and La nina on Seasonal Variability in South Kalimantan" and the data of DHF and malaria cases obtained from the Data and Information Center of the Ministry of Health of Indonesia. Descriptive analysis was carried out on the trend of DHF and malaria cases fluctuation associated with El nino and La nina phenomena that occurred throughout the time period 2007-2017. El nino and La nina phenomena affect fluctuations in DHF and malaria cases related to increased and decreased of rainfall which affect the growth and development and also the activity patterns of mosquito as vectors of transmitting DHF and malaria. The increase of DHF cases in Indonesia was influenced by "strong" El nino and "moderate" La nina while the increase of malaria cases in Indonesia was more influenced by "strong" and "moderate" La nina events.
15
Aji, Tri, Tri Aji, Widodo Setiyo Pranowo, Nuki Widi Asmoro, Agustinus Agustinus, Muhammad Azis Kurniawan e Amri Rahmatullah. "The Characteristics Of The Mixed Layer Depth During La Niña, El Niño, And Normal Years In The North Natuna Sea". Omni-Akuatika 19, n. 2 (8 dicembre 2023): 205. http://dx.doi.org/10.20884/1.oa.2023.19.2.1089.
Testo completoAbstract (sommario):
The Natuna Sea is one of the seas located in the northern part of Indonesia, which is influenced by several oceanographic climate phenomena, including the El Nino-Southern Oscillation (ENSO) system, such as La Nina and El Nino, which cause vertical temperature dynamics. This study aims to examine the relationship between La Nina, El Nino, and normal years on the variability of the mixed layer depth in the Natuna Sea. The study utilizes temperature data from the World Ocean Database (WOD) and Marine Copernicus for a period of 3 years, including years with La Nina, El Nino, and normal conditions, as well as mixed layer depth (defined by sigma theta) data from Marine Copernicus. The occurrence of La Nina, El Nino, and normal years is obtained from the Southern Oscillation Index (SOI). The research findings indicate a correlation between the SOI values and the Maximum Mixed Layer Depth (MLD) during weak and very weak El Nino and La Nina conditions, while the correlation is weak during normal years. During the La Nina, normal, and El Nino periods, the deepest MLD occurs during the west monsoon season at depths ranging from 7 to 60 meters. The shallowest MLD occurs during the first transition season at depths ranging from 7 to 25 meters. The MLD values during the east monsoon season range from 7 to 43 meters, and during the second transition season, the MLD ranges from 7 to 44 meters.
16
Cao, Jingbo. "Discussion on the Application of Statistical Analysis Method in Geography Education Research —— Taking Drought and Snow Disaster in Xilingol League as an Example". Review of Educational Theory 4, n. 2 (13 maggio 2021): 28. http://dx.doi.org/10.30564/ret.v4i2.3086.
Testo completoAbstract (sommario):
Based on the statistical analysis method, this paper studies the temporal and spatial correlation between drought and snow Based on the statistical analysis method, this paper studies the temporal and spatial correlation between drought and snow disasters and El Nino/La Nina events in various counties of Xilingol League. According to the research results, it is found that the number of disasters in Xilingol League in El Nino/La Nina year accounts for 54% of the total number of disasters in Xilingol League. El Nino has more disasters than La Nina. In El Nino/La Nina years, the frequency of snow disasters in Xilingol League is higher than that of drought disasters. The areas with high frequency of El Nino disasters are East Ujimqin Banner, West Ujimqin Banner and Abaga Banner. The areas with high frequency of disasters in La Nina are Sonid Zuoqi, Erenhot, Xilinhot and Xianghuang Banner. Using statistical analysis method can accurately and effectively study whether there is obvious correlation between drought and snow disasters and El Nino/La Nina events in Xilingol League, and enrich the methods and contents in geography education and research, which is of great significance for monitoring and preventing drought and snow disasters in Xilingol League.
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Athoillah, Ibnu, Rini Mariana Sibarani e Deassy Eirene Doloksaribu. "ANALISIS SPASIAL PENGARUH KEJADIAN EL NINO KUAT TAHUN 2015 DAN LA NINA LEMAH TAHUN 2016 TERHADAP KELEMBAPAN, ANGIN DAN CURAH HUJAN DI INDONESIA". Jurnal Sains & Teknologi Modifikasi Cuaca 18, n. 1 (30 novembre 2017): 33. http://dx.doi.org/10.29122/jstmc.v18i1.2140.
Testo completoAbstract (sommario):
IntisariKejadian El Nino Kuat tahun 2015 dan La Nina Lemah tahun 2016 sangat berpengaruh terhadap beberapa parameter cuaca di Indonesia seperti kelembapan udara, angin dan curah hujan. Dilihat dari kelembapan udara pada saat El Nino, kelembapan udara memiliki anomali negatif dan pada saat La Nina cenderung anomali positif. Dari pengaruhnya terhadap angin, saat El Nino angin zonal lebih dominan angin timuran, dan angin meridional lebih dominan angin selatan yang menyebabkan berkurangnya suplai uap air di Indonesia. Sedangkan saat La Nina, angin zonal lebih dominan baratan dan angin meridional lebih dominan dari utara. Pengaruh yang jelas terlihat dari adanya fenomena El Nino dan La Nina adalah kejadian hujan di wilayah Indonesia. Pola spasial kejadian hujan di wilayah Indonesia pada tahun 2015 dan tahun 2016 memperlihatkan pengaruh dari fenomena El Nino dan La Nina yang telah terjadi. Data hujan yang digunakan dalam tulisan ini adalah data observasi per 1 jam dari satelit TRMM pada tahun 2015, 2016 dan data historis dari tahun 2001 - 2014. Dari hasil analisis spasial menunjukkan bahwa kejadian El Nino mulai terlihat dampaknya pada musim kering yaitu berupa penurunan curah hujan di bawah normalnya sekitar 50 – 300 mm/bulan terjadi pada bulan Agustus hingga Oktober 2015 terutama di wilayah Indonesia bagian Selatan sedangkan pada musim basah November 2015 – Maret 2016 tidak terlalu signifikan dampaknya. Kejadian La Nina terlihat dampaknya pada bulan September – Desember tahun 2016 dimana terlihat adanya penambahan curah hujan dibandingkan normalnya sekitar 50 – 400 mm/bulan. AbtractThe strong El Nino in 2015 and the weak La Nina in 2016 are very influential on weather in Indonesia. In this case will be seen the influence of them againts relative humidifty, wind, and rainfall. The relative humidity during El Nino tends to be a negative and when La Nina tends to be a positive anomaly. Impact to the wind during El Nino, zonal winds are dominant northern and meridional winds are dominant southern which leads to reduced supply of water vapor in Indonesia. While during La Nina, zonal winds are dominant western and meridional winds are dominant northern. The obvious influence of El Nino and La Nina are the occurrence of rainfall in Indonesia. Spatial pattern of rainfall events in Indonesia can show the effects of the El Nino and La Nina. Rainfall data used in this paper are the observation data from TRMM Satellite hourly from 2001 – 2016. Data were analyzed by monthly and seasonal analysis. From the result of spatial analysis shows the impact of El Nino began on dry season. That is decrease of rainfall below the normal around 50 – 300 mm/month occurs in August to October 2015, especially in southern Indonesia. while in wet season November 2015 – March 2016 the impact is not significant. The impact of La Nina is seen in September – December 2016, where there is an increase of rainfall above the normal around 50 – 400 mm/month.
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Irawan, Bambang. "Fenomena Anomali Iklim El Nino dan La Nina: Kecenderungan Jangka Panjang dan Pengaruhnya terhadap Produksi Pangan". Forum penelitian Agro Ekonomi 24, n. 1 (18 agosto 2016): 28. http://dx.doi.org/10.21082/fae.v24n1.2006.28-45.
Testo completoAbstract (sommario):
<strong>English</strong><br />El Nino occurrence tends to increase with longer duration, higher magnitude of climate anomaly, and shorter cycle period of occurrence. Climate anomaly induces decrease of rainfall and water availability with further consequence on food production decline by 3.06 percent for each El Nino case. Contrary to El Nino which causes rainfall and food production decreases, La Nina causes increases in rainfall and improves food production by 1.08 percent. The lowest production decrease induced by El Nino and the highest production increase caused by La Nina was observed on corn production indicating that corn production is the most sensitive to climate anomaly. To reduce possible food production decrease induced by El Nino a comprehensive mitigating policy is essential. The policy consists of three major efforts, namely: (1) establishment of earlier warning system on climate anomaly, (2) development of efficient dissemination system on climate anomaly information, and (3) developing, disseminating and facilitating farmers to implement cultural techniques adaptive to drought condition as well as improving, rehabilitating irrigation network and developing rainfall harvesting techniques.<br /><br /><br /><strong>Indonesian</strong><br />Frekuensi kejadian El Nino cenderung meningkat dengan durasi yang semakin panjang, tingkat anomali iklim yang semakin besar, dan siklus kejadian yang semakin pendek. Anomali iklim tersebut menyebabkan penurunan curah hujan dan ketersediaan air irigasi yang selanjutnya berimplikasi pada penurunan produksi pangan sebesar 3,06 persen untuk setiap kejadian El Nino. Sebaliknya, kejadian La Nina cenderung diikuti dengan peningkatan curah hujan dan merangsang peningkatan produksi pangan sebesar 1,08 persen untuk setiap kejadian La Nina. Penurunan produksi pangan akibat El Nino dan peningkatan produksi pangan akibat La Nina paling tinggi terjadi pada produksi jagung. Hal ini menunjukkan bahwa produksi jagung paling sensitif terhadap peristiwa anomali iklim. Dalam rangka menekan dampak negatif El Nino terhadap produksi pangan maka diperlukan kebijakan penanggulangan yang komprehensif yang meliputi tiga upaya pokok yaitu : (1) pengembangan sistem deteksi dini anomali iklim, (2) pengembangan sistem diseminasi informasi yang efisien tentang anomali iklim, dan (3) mengembangkan, mendiseminasikan dan memfasilitasi petani untuk menerapkan teknik budidaya tanaman yang adaptif terhadap situasi kekeringan di samping membangun dan merehabilitasi jaringan irigasi serta mengembangkan teknik pemanenan curah hujan.
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Wardana, Dimas Agung Satya, Betti Yuniasih e Herry Wirianata. "Perbandingan Indeks Vegetasi NDVI dan SAVI di Kebun Kelapa Sawit pada Kondisi El Nino dan La Nina". AGROISTA : Jurnal Agroteknologi 7, n. 2 (2 febbraio 2024): 118–25. http://dx.doi.org/10.55180/agi.v7i2.584.
Testo completoAbstract (sommario):
The extreme weather condition El Nino can cause Indonesia to experience a prolonged dry season, while La Nina causes a prolonged rainy season. These conditions affect the availability of water in oil palm plantations and affect the physiological processes of oil palm. This research aims to compare the NDVI index and SAVI index using Landsat 8 satellite imagery in the oil palm plantations of PT. Wanapotensi Guna during El Nino and La Nina. Landsat 8 satellite imagery recorded in August 2019 describes El Nino conditions and recorded in August 2020 describes La Niña conditions in the study area were downloaded from the USGS website. The NDVI and SAVI indices were analyzed using ArcGIS 10.5 software. The research results show the value of the NDVI index and SAVI index in the oil palm plantation area of PT. Wanapotesi Guna has a value that is not much different in El Nino and La Nina conditions. The NDVI index value in El Nino conditions has a range of 0.07-0.46 and in La Nina conditions has a range of 0.13-0.44. Likewise, the SAVI index value in El Nino conditions has a range of 0.11-0.70 and in La Nina conditions has a range of 0.20-0.69. So it can be concluded that the NDVI index and SAVI index obtained from Landsat 8 satellite imagery cannot describe significant differences in index values in oil palm plantation areas due to differences in the extreme weather conditions of El Nino and La Nina.
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Coope, Marian G. R., Gabriel Miro e Carlos Ruiz Silva. "Nino y grande". Modern Language Review 85, n. 2 (aprile 1990): 479. http://dx.doi.org/10.2307/3731892.
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Künzli, Nino. "Nino Künzli Comments". American Journal of Public Health 110, n. 3 (marzo 2020): 295–96. http://dx.doi.org/10.2105/ajph.2019.305537.
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ASAKURA, Tadashi. "El Nino event." Journal of Geography (Chigaku Zasshi) 93, n. 7 (1985): 534–39. http://dx.doi.org/10.5026/jgeography.93.7_534.
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Perryman, David A., e R. Monastersky. "El Nino Preparedness". Science News 152, n. 2 (12 luglio 1997): 19. http://dx.doi.org/10.2307/3981021.
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Smith, Neil. "El Nino capitalism". Progress in Human Geography 22, n. 2 (aprile 1998): 159–63. http://dx.doi.org/10.1191/030913298676627326.
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Krauss, Camila. "Felix, el nino". Callaloo 26, n. 4 (2003): 1114. http://dx.doi.org/10.1353/cal.2003.0144.
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ASNANI, G. C. "El Nino of 1997-1998 and Indian Monsoon". MAUSAM 52, n. 1 (29 dicembre 2021): 57–66. http://dx.doi.org/10.54302/mausam.v52i1.1677.
Testo completoAbstract (sommario):
El-Nino of 1997-1998 was accompanied by severe global weather anomalies, which generated widespread interest at all levels in the world. As a result, United Nations General Assembly passed a resolution (52 / 200) urging International co-operation to reduce the adverse impact of El-Nino on human society and Environment. The El-Nino (Warm Phase) commenced around April – May 1997, reached peak intensity around December 1997 and ended around May 1998. La-Nina (Cold Phase) started around this time, reached its peak in January 1999, weakened around June - July 1999 and has continued in its weak phase at the time of writing, August 1999.
Development and decay of the El-Nino are illustrated through SST,SOI and sea-water temperature below the sea-surface. Features during peak period of El-Nino are illustrated through SST, sea-level pressure, surface wind, OLR, and Walker Circulation. There is clear evidence of west-to-east propagation of OLR anomaly, 850 hPa zonal wind anomaly and sea-level pressure anomaly. SST anomaly pattern did not give strong evidence of this type of zonal progression.
El-Nino is global in nature.
El-Nino / La-Nina years during the 120-year period 1871-1990 are tabulated along with All India Summer Monsoon Rainfall (AISMR) anomalies. There is evidence of El-Nino years tending to become years of deficit rainfall and La-Nina years being years of excess rainfall over India. El-Nino / La-Nina events, which can be predicted 6-12 months in advance, can be used and are being used as part of the prediction formulae, in the issue of official monsoon rainfall forecast by India Meteorological Department. Based on El-Nino considerations alone, it has been feared, in some quarters, that 1997 might become a year of extreme deficit summer monsoon rainfall. However, the
actual rainfall over India during June – September 1997 was 2 % above normal. India Meteorological Department had predicted "normal" rainfall (+-10% of the rainfall).
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Rahayu, Safitri Dwi, Heryoso Setiyono e Elis Indrayanti. "Hubungan Kecepatan Angin dengan Luasan Upwelling Intensitas Kuat di Perairan Selatan Jawa pada Kejadian La Nina, El Nino dan Normal". Indonesian Journal of Oceanography 5, n. 1 (16 febbraio 2023): 07–17. http://dx.doi.org/10.14710/ijoce.v5i1.15634.
Testo completoAbstract (sommario):
Fenomena upwelling yang terjadi di Perairan Selatan Jawa selain dipengaruhi oleh angin muson juga sangat dipengaruhi oleh ENSO (El Nino Southern Oscillation) dan IOD (Indian Dipole Mode). Penelitian ini mengkaji lebih jauh tentang hubungan kecepatan angin dan luasan upwelling intensitas kuat di Perairan Selatan Jawa selama kejadian La Nina tahun 2010, Normal Tahun 2013 dan El Nino tahun 2015. Data yang digunakan meliputi data suhu permukaan laut (SPL) dan klorofil-a dari citra MODIS, data angin dari ASCAT. Peta variasi upwelling serta nilai luasannya diperoleh dari pengolahan ArcGIS dan nilai rata-rata kecepatan angin bulanan diolah dengan IDL. Daerah upwelling intensitas kuat yang terluas pada kejadian La Nina terjadi di bulan Agustus sebesar 1.952 km² dengan kecepatan angin rata-rata bulanan sebesar 6,96 m/s. Sedangkan pada kejadian Normal dan El Nino terjadi di bulan September sebesar 14.432 km² dan 29.120 km² dengan kecepatan angin rata-rata bulanannya sebesar 6,55 m/s dan sebesar 6,15 m/s. Hasil korelasi kecepatan angin dengan luasan upwelling menunjukkan korelasi yang cukup tinggi pada kondisi La Nina dan Normal dengan nilai korelasi sebesar 0,58 dan 0,54. Kecepatan angin tidak terlalu mempengaruhi luasan upwelling pada kondisi El Nino dengan nilai korelasi yang sangat rendah sebesar 0,06.Kata kunci: Luas upwelling, Angin Muson, Perairan Selatan Jawa, La Nina, El Nino Upwelling in the Southern Java waters is directly controlled by monsoon winds and is also strongly influenced by ENSO (El Nino Southern Oscillation) and IOD (Indian Dipole Mode). This study examines the relationship between wind speed and the area of strong intensity upwelling in the waters of Southern Java during the 2010 La Nina, 2013 Normal, and 2015 El Nino events. The data used are Sea Surface Temperature (SST) and chlorophyll-a from Aqua Modis level 3, and wind data from ASCAT. The area of strong intensity upwelling is obtained from ArcGIS processing and the average monthly wind speed is processed using IDL. The widest area of strong intensity upwelling during the La Nina event occurred in August at 1,952 km² with a monthly average wind speed of 6.96 m/s. Whereas Normal and El Nino events occurred in September at 14,432 km² and 29,120 km² with monthly average wind speeds of 6.55 m/s and 6.15 m/s. The correlation of wind speed and upwelling area showed a fairly high correlation in La Nina and Normal conditions with a correlation value of 0.58 and 0.54. Wind speed does not significantly affect the upwelling area during El Nino conditions with a very low correlation value of 0.06.Keywords: Upwelling area, Monsoon Wind, the Southern Java Waters, La Nina, El Nino
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Burl Henry. "The definitive cause of La Nina and El Nino events". World Journal of Advanced Research and Reviews 17, n. 1 (30 gennaio 2023): 908–11. http://dx.doi.org/10.30574/wjarr.2023.17.1.0124.
Testo completoAbstract (sommario):
Rather than being strictly random events, it has been proven that all La Ninas and El Ninos are caused by the increase or decrease of reflective SO2 aerosols in Earth’s atmosphere, from both volcanic eruptions and industrial activity. Although volcanic eruptions are random events, an eruption usually signifies a forthcoming La Nina/El Nino cycle, and thus can have some predictive value.
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Wattimena, Marlin C., e Simon Tubalawony. "Variasi Parameter Oseanografi di Utara Laut Arafura pada Tahun Super La Nina 2010 dan El Nino 2015". Journal of Coastal and Deep Sea 1, n. 1 (15 giugno 2023): 42–50. http://dx.doi.org/10.30598/jcds.v1i1.11325.
Testo completoAbstract (sommario):
Tujuan penelitian ini adalah mengetahui variasi parameter oseanografi di Utara Laut Arafura selama kejadian ekstrim super La Nina 2010 dan El Nino 2015. Data yang digunakan bersumber dari multi-dataset model CMEMS Copernicus, yang telah divalidasi dengan data observasi satelit. Hasil penelitian menunjukkan suhu permukaan dan tinggi muka laut ditemukan lebih rendah selama kejadian super El Nino 2015. Sebaliknya, salinitas permukaan dan ketebalan lapisan tercampur mengalami peningkatan selama kejadian La Nina 2010. Arus lapisan dalam yang mengarah ke timur menyebar sepanjang slope pada periode Monsun Tenggara mengalami penguatan selama kejadian El Nino.
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Riza, Muhammad Himmatur, e Nihayatul Minani. "THE EFFECT OF EL NINO AND LA NINA ON THE INTENSITY OF DETERMINING QIBLA DIRECTION". Al-Hilal: Journal of Islamic Astronomy 3, n. 1 (19 maggio 2021): 55–74. http://dx.doi.org/10.21580/al-hilal.2021.3.1.7663.
Testo completoAbstract (sommario):
On the basis of the annual pseudo motion of the Sun, there is a division of the seasons. In terms of seasons, there are several natural phenomena that can affect the seasons on earth, especially the natural phenomena of El Nino and La Nina. In Indonesia, El Nino can result in a longer dry season and La Nina can cause a longer rainy season. Thus, any research related to the influence of El Nino and La Nina is very important to do to determine whether these two natural phenomena affect the intensity of determining the direction of the Qibla. This research is included in the Library Research using qualitative research methods with a descriptive format. Data collection techniques used are documentation or literature and non-participant observation. Meanwhile, to analyze the data, the authors processed the field data obtained from the Class I Semarang Climatology Office to obtain the average climatological elements during the year of El Nino and La Nina, then the results were implemented in determining the direction of the Qibla. This study resulted in the finding that La Nina was sufficient to influence the implementation of determining the direction of the Qibla because at the time of La Nina the rain continued to occur throughout the year.
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KHOLE, MEDHA. "Variability of sea surface temperature over Indian Ocean during El-Nino and La-Nina years". MAUSAM 54, n. 4 (19 gennaio 2022): 829–36. http://dx.doi.org/10.54302/mausam.v54i4.1582.
Testo completoAbstract (sommario):
Many recent studies have brought out the importance of Indian Ocean in global climate variability. In the present study, the variability of composite Sea Surface Temperatures (SSTs) over Indian Ocean (10º S - 20º N, 50º E - 100º E) for El-Nino and La-Nina years is analysed. The data period is 1961-97. It is observed that, the composite SSTs over Indian Ocean for El-Nino (La-Nina) years show cooling (warming) during winter season and warming (cooling) during post-monsoon season.
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Sidauruk, Magdalena, Herlina Juni Risma Saragih, Sugeng Tri Utomo, Pujo Widodo e Kusuma Kusuma. "Rainfall Variability in East Kalimantan from Impact of El Nino and La Nina for Effort Disaster Prevention to Support National Security". International Journal of Progressive Sciences and Technologies 38, n. 2 (30 maggio 2023): 431. http://dx.doi.org/10.52155/ijpsat.v38.2.5341.
Testo completoAbstract (sommario):
Rainfall has an important influence on human life. One of the global influences that have an impact on rainfall conditions in Indonesia is the El Nino and La Nina phenomena which can result in disasters. Efforts to reduce disaster risk require good disaster management to protect the entire nation from all threats, especially non-military threats in the disaster aspect in East Kalimantan. One effort is to recognize East Kalimantan's rainfall variability in La Nina and El Nino conditions. This study uses rainfall data for 1991 – 2020 at three locations at the Sepinggan Meteorological Station, Balikpapan, Samarinda and Kalimarau Berau, East Kalimantan. El Nino conditions in East Kalimantan show the influence of rainfall during the dry season, rainfall is less than normal conditions. Reduced rainfall from normal conditions can result in drought. La Nina conditions in East Kalimantan show the influence of the dry season, there is an increase in rainfall compared to normal conditions. Increased rainfall from normal conditions can cause flooding. La Nina and El Nino conditions affect rainfall in East Kalimantan which can have an impact on disasters. This condition must be anticipated in order to reduce the risk of an impending disaster. Anticipation efforts can guarantee the safety and welfare of citizens, communities, La Nina and El Nino conditions affect rainfall in East Kalimantan which can have an impact on disasters. This condition must be anticipated in order to reduce the risk of an impending disaster. Anticipation efforts can guarantee the safety and welfare of citizens, communities, La Nina and El Nino conditions affect rainfall in East Kalimantan which can have an impact on disasters. This condition must be anticipated in order to reduce the risk of an impending disaster. Anticipation efforts can guarantee the safety and welfare of citizens.
33
Rothwell, Andrew, Max Jacob e Anne S. Kimball. "Lettres a Nino Frank". Modern Language Review 86, n. 2 (aprile 1991): 474. http://dx.doi.org/10.2307/3730611.
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Green, Maria, Max Jacob e Anne S. Kimball. "Lettres à Nino Frank". World Literature Today 64, n. 2 (1990): 277. http://dx.doi.org/10.2307/40146418.
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Monastersky, Richard. "Spying on El Nino". Science News 152, n. 17 (25 ottobre 1997): 268. http://dx.doi.org/10.2307/3980938.
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36
Uppenbrink, J. "CLIMATOLOGY: Predicting El Nino". Science 291, n. 5508 (23 febbraio 2001): 1451a—1451. http://dx.doi.org/10.1126/science.291.5508.1451a.
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Philander, S. "Who is el nino?" Eos, Transactions American Geophysical Union 79, n. 13 (1998): 170. http://dx.doi.org/10.1029/98eo00125.
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Guidobaldi, Nicoletta. "Nino Pirrotta (1908–98)". Early Music XXVI, n. 3 (agosto 1998): 531–32. http://dx.doi.org/10.1093/earlyj/xxvi.3.531.
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Payen, Pascal. "Nino Luraghi (ed.), The". Anabases, n. 7 (1 marzo 2008): 292–94. http://dx.doi.org/10.4000/anabases.2570.
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Fedorov, A. V. "Is El Nino Changing?" Science 288, n. 5473 (16 giugno 2000): 1997–2002. http://dx.doi.org/10.1126/science.288.5473.1997.
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Rejeki, Hasti Amrih, B. Betsi e Yogi Muhammad Andariwan. "VARIATIONS OF INDONESIAN TRHOUGHFLOW TRANSPORT IN MALUKU AND HALMAHERA SEA RELATED TO THE OCCURRENCE OF EL NINO SOUTHERN OSCILLATION". Jurnal Kelautan: Indonesian Journal of Marine Science and Technology 14, n. 3 (3 febbraio 2022): 243–53. http://dx.doi.org/10.21107/jk.v14i3.12083.
Testo completoAbstract (sommario):
ABSTRACTMaluku and Halmahera Sea are the entry paths for the Indonesian Throughflow (ITF). This study examined the variation of their current speed, current direction, and transport during the ENSO phases on La Nina in 2010-2011 and El Nino in 2015-2016. The data used were the Marine Copernicus reanalysis data of u and v components of current velocity at 155 m and 266 m of depth. The data were processed by using GrADS to see the direction and speed of the current as well as by calculating the ITF transport. During La Nina, both at 155 m and 266 m of depths were found the eddy patterns. When El Nino occurred, the direction of currents in Maluku Sea was different from La Nina conditions, while the direction of currents in Halmahera Sea had no differences. Current velocity in both oceans at each depth was lower during El Nino than La Nina. The condition of ITF transport in the Maluku Sea during La Nina was dominated by southward movement with a smaller value than during El Nino which generally moved northward meanwhile in the Halmahera Sea had the opposite condition.Keywords: current speed, current direction, ENSO, ITF, transport
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Pasha, Wanda Avia, Amron Amron e Widodo Setiyo Pranowo. "Pengaruh Enso (El Nino Southern Oscillation) Terhadap Suhu Dan Salinitas di Perairan Utara Aceh". Jurnal Hidropilar 8, n. 2 (9 dicembre 2022): 61–72. http://dx.doi.org/10.37875/hidropilar.v8i2.247.
Testo completoAbstract (sommario):
Suhu dan salinitas merupakan faktor oseanografi yang berperan dalam proses fisika maupun biologi diperairan. Massa air dapat diketahui dengan menganalisis distribusi suhu dan salinitas. Variabilitas iklim di Indonesia salah satunya di pengaruhi oleh ENSO. Tujuan dari penelitian ini untuk mengetahui kondisi umum perairan utara Aceh, mengetahui variabilitas suhu dan salinitas saat fenomena ENSO terjadi dan korelasi antara suhu dan salinitas terhadap SOI. Data yang digunakan adalah suhu dan salinitas pada tahun 2011, 2012 dan 2015 dari website HYCOM. Metode yang digunakan adalah asimilasi hasil model dengan menggunakan software Ocean Data View 4 untuk variabilitas spasial dan Microsoft Excel untuk variabilitas temporal. Hasil penelitian menunjukkan bahwa kondisi umum di perairan utara Aceh saat fenomena ENSO tidak mengalami perubahan suhu dan salinitas yang signifikan. Variabilitas suhu laut pada kondisi La Nina lebih tinggi daripada kondisi El Nino sedangkan variabilitas salinitas yang terjadi pada kondisi El Nino lebih tinggi daripada La Nina. Hasil korelasi menunjukkan saat kondisi La Nina terhadap SOI tidak mempengaruhi variabilitas suhu, namun saat kondisi El Nino SOI dapat mempengaruhi suhu dengan tingkat hubungan kuat dan saat La Nina cenderung lemah. Saat kondisi La Nina dan El Nino terhadap SOI tidak mempengaruhi variabilitas salinitas.
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Atmadipoera, Agus S., Agitha Saverti Jasmine, Mulia Purba e Anastasia R. T. D. Kuswardani. "UPWELLING CHARACTERISTICS IN THE SOUTHERN JAVA WATERS DURING STRONG LA NINA 2010 AND SUPER EL NINO 2015". Jurnal Ilmu dan Teknologi Kelautan Tropis 12, n. 1 (27 aprile 2020): 257–76. http://dx.doi.org/10.29244/jitkt.v12i1.28977.
Testo completoAbstract (sommario):
Seasonal coastal upwelling in the Southern Java waters is considered to be modulated by interannual ocean-atmosphere variability of El Nino Southern Oscillation (ENSO). This study aims to investigate a contrast in seasonal upwelling characteristics during the La Nina 2010 and El Nino 2015 events, by using multi-datasets from INDESO model output and satellite-derived datasets. Distinct characteristics of seasonal upwelling was clearly seen. In La Nina, surface ocean-atmosphere variables were much lower than that observed in El Nino, except for precipitation rate, sea surface temperature, and sea surface height. In La Nina, warmer (27-28°C) and a very freshwater (<33.80psu) were predominant in the upper 45m depth, concealing upwelling cooler water at subsurface. In contrast, in the El Nino, a drastic upwelled subsurface water of isotherms of 25-26°C and isohalines of 34.24-34.44psu were outcropped at the sea surface. Temperature-based upwelling index is -2°C and +4°C, demonstrating the ENSO has strongly modulated the upwelling intensity. A strong eastward South Java Coastal Current (SJCC) was found only in La Nina event. Persistent westward Indonesian Throughflow south of 9.5°S were visible both in different ENSO events. Estimate of Ekman transport derived from model meridional current was intervened strongly by the presence of the SJCC and the ITF.
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Supriatin, Lilik S., e Martono Martono. "Impacts of Climate Change (El Nino, La Nina, and Sea Level) on the Coastal Area of Cilacap Regency". Forum Geografi 30, n. 2 (13 dicembre 2016): 106. http://dx.doi.org/10.23917/forgeo.v30i2.2449.
Testo completoAbstract (sommario):
This research was conducted to determine the impact of El Nino and La Nina on rainfall as well as the impact of El Nino, La Nina, and sea level on coastal flooding in Cilacap Regency. The methods used in this study were statistical analysis and simulation. The results of this study were El Nino caused diminished rainfall in Cilacap regency between 295 to 1665 mm. Meanwhile, La Nina caused surplus rainfall between 189 - 691 mm/year in compared with annual climatological rainfall. When ENSO phenomenon (El Nino) occurred, it caused sea level anomaly to fall, including in 1994, 1997, and 2002 of -11.63 cm, -11.5 cm, and -4.95 cm, respectively. Meanwhile, in La Nina years in 1999 and 2000, the sea level anomaly enhanced by 2.55 cm and 5.03 cm, respectively. The result of sea level projection by employing simulation model in this study was compared with the simulation results of the IPCC that obtained a correlation coefficient r of 0.99. Based on the simulation results, the 8 (eight) sub-districts in Cilacap Regency located in the coastal area potentially endure flood due to the impacts of global warming and La Nina with a diverse predicted year of occurrence depending on the altitude of each sub-district.
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Ahmad, Khalil, Asifa Zafar e Ayaz. "The Impacts of El Nino and La Nina on the Global Weather Condition and Possible Remedial Measures". Global Social Sciences Review VII, n. I (30 marzo 2022): 316–22. http://dx.doi.org/10.31703/gssr.2022(vii-i).30.
Testo completoAbstract (sommario):
This research aims to investigate the socio-economic and political"impacts of El Nino and La Nina on" global weather conditions. The analogies El Nino - La Nina means "Little baby boy and Little baby girl" are the two different hot and cold climate patterns that developed in the Pacific Ocean due to the warm "Trade Wind", adversely affecting the global weather conditions.The trade winds are permanently flowing from the high-pressure area to low pressure belt between the latitudes of 30° and 40° N and S, bringing more rainfall and causing floods. This phenomenon of "El Nino and La Nina" has the worst impacts on global climate and weather conditions. This mixed high variations in the temperature, and up welling resulting the swear hurricanes in the Pacific Ocean, frequent tornado's in the Atlantic Ocean, destructive tropical cyclones and tsunamis in the Indo-Pacific and the hot surface of the oceanswater are the major indicators of increased global change in the weather conditions.
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Kain, Maria Marselina, Abdul Wahid e Apolonaris S. Geru. "ANALISIS PENGARUH EL NINO TERHADAP HUJAN DI NTT". Jurnal Fisika : Fisika Sains dan Aplikasinya 3, n. 2 (20 dicembre 2018): 155–62. http://dx.doi.org/10.35508/fisa.v3i2.621.
Testo completoAbstract (sommario):
Abstrak
Telah dilakukan penelitian tentang pengaruh El Nino Terhadap Hujan di NTT yang terdiri dari 23 Zona Musim dan dianalisis berdasarkan data Curah Hujan tujuh tahun terakhir kejadian El Nino terhadap data Normal selama 30 tahun. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh El Nino terhadap Awal Musim Hujan, Periode Musim Hujan, Panjang Musim Hujan, Curah Hujan Musim Hujan dan Sifat Hujan. Metode yang digunakan dalam penelitian ini adalah metode komparatif atau perbandingan dan Analisis Curah Hujan tahun El Nino pada tujuh kali kejadian terhadap Normal Hujan selama 30 tahun. Hasil yang diperoleh dari penelitian ini adalah pada tahun terjadi El Nino, sebagian besar ZOM di NTT dengan Awal Musim Hujan lebih mundur dari Normal, Periode Musim Hujan lebih pendek dari Normal serta Curah Hujan berkurang dari Normal dan Sifat Hujan menjadi di Bawah Normal. Pengaruh kejadian El Nino terhadap Awal Musim Hujan yang lebih mundur dari Normalnya, Periode Musim Hujan yang lebih pendek dari Normalnya dan Sifat Hujan yang di Bawah Normal dari 23 Zona di NTT pada tahun-tahun kejadian El Nino bervariasi dan ZOM yang dipengaruhi kejadian El Nino tidak tetap.
Kata kunci : El Nino, Awal Musim Hujan, Periode Musim Hujan, Sifat Hujan.
Abstract
[Analysis Of The Influence Of El Nino On Rain In NTT] Studies have been conducted about the influence of El Nino on Rain the province which consists of 23 Zones the Season and analyzed based on Rain data for the last seven years the incidence of El Nino against Normal data for 30 years. The purpose of this studyis to determine the effect of El Nino to the Beginning of the Rainy Season, Long Rainy Season, Precipitation of the Rainy Season and the Nature of the Rain. The method used in this research is the comparative method or comparison and Analysis of precipitation is the year of El Nino on the seven times genesis against the Normal Rain for 30 years. The results obtained from this research is that in the event of El Nino, most of the ZOM in NTT with the Beginning of the Rainy Season is more bacward than Normal, the Period of the Rainy Season is horter than Normal and precipitation is reduced from the Normal and the Nature of Rain to be Below Normal.this is because in the event of El Nino, monsoons coming from the Southest bring the water vapor that a lot of most of the turn toward the coast of Peru. The influence of El Nino to the Beginning of the Rainy Season which is backwards from Normal, the Period of the Rainy Season is shorter than Normal and the Nature of the Rainfall Below Normal from the 23 Zones in the province in the years of El Nino are varied and ZOM that influence the incidence of El Nino is not fixed.
Keywords: El Nino, the Beginning of the Rainy Season, the Period of the Rainy Season, the Nature of the Rain
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Kain, Maria Marselina, Abdul Wahid e Apolonaris S. Geru. "ANALISIS PENGARUH EL NINO TERHADAP HUJAN DI NTT". Jurnal Fisika : Fisika Sains dan Aplikasinya 3, n. 3 (20 dicembre 2018): 155–62. http://dx.doi.org/10.35508/fisa.v3i3.621.
Testo completoAbstract (sommario):
Abstrak
Telah dilakukan penelitian tentang pengaruh El Nino Terhadap Hujan di NTT yang terdiri dari 23 Zona Musim dan dianalisis berdasarkan data Curah Hujan tujuh tahun terakhir kejadian El Nino terhadap data Normal selama 30 tahun. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh El Nino terhadap Awal Musim Hujan, Periode Musim Hujan, Panjang Musim Hujan, Curah Hujan Musim Hujan dan Sifat Hujan. Metode yang digunakan dalam penelitian ini adalah metode komparatif atau perbandingan dan Analisis Curah Hujan tahun El Nino pada tujuh kali kejadian terhadap Normal Hujan selama 30 tahun. Hasil yang diperoleh dari penelitian ini adalah pada tahun terjadi El Nino, sebagian besar ZOM di NTT dengan Awal Musim Hujan lebih mundur dari Normal, Periode Musim Hujan lebih pendek dari Normal serta Curah Hujan berkurang dari Normal dan Sifat Hujan menjadi di Bawah Normal. Pengaruh kejadian El Nino terhadap Awal Musim Hujan yang lebih mundur dari Normalnya, Periode Musim Hujan yang lebih pendek dari Normalnya dan Sifat Hujan yang di Bawah Normal dari 23 Zona di NTT pada tahun-tahun kejadian El Nino bervariasi dan ZOM yang dipengaruhi kejadian El Nino tidak tetap.
Kata kunci : El Nino, Awal Musim Hujan, Periode Musim Hujan, Sifat Hujan.
Abstract
[Analysis Of The Influence Of El Nino On Rain In NTT] Studies have been conducted about the influence of El Nino on Rain the province which consists of 23 Zones the Season and analyzed based on Rain data for the last seven years the incidence of El Nino against Normal data for 30 years. The purpose of this studyis to determine the effect of El Nino to the Beginning of the Rainy Season, Long Rainy Season, Precipitation of the Rainy Season and the Nature of the Rain. The method used in this research is the comparative method or comparison and Analysis of precipitation is the year of El Nino on the seven times genesis against the Normal Rain for 30 years. The results obtained from this research is that in the event of El Nino, most of the ZOM in NTT with the Beginning of the Rainy Season is more bacward than Normal, the Period of the Rainy Season is horter than Normal and precipitation is reduced from the Normal and the Nature of Rain to be Below Normal.this is because in the event of El Nino, monsoons coming from the Southest bring the water vapor that a lot of most of the turn toward the coast of Peru. The influence of El Nino to the Beginning of the Rainy Season which is backwards from Normal, the Period of the Rainy Season is shorter than Normal and the Nature of the Rainfall Below Normal from the 23 Zones in the province in the years of El Nino are varied and ZOM that influence the incidence of El Nino is not fixed.
Keywords: El Nino, the Beginning of the Rainy Season, the Period of the Rainy Season, the Nature of the Rain
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Malau, Leo Rio Ependi, Khoiru Rizqy Rambe, Nur Arifatul Ulya e Arly Getha Purba. "Dampak perubahan iklim terhadap produksi tanaman pangan di indonesia". Jurnal Penelitian Pertanian Terapan 23, n. 1 (30 marzo 2023): 34–46. http://dx.doi.org/10.25181/jppt.v23i1.2418.
Testo completoAbstract (sommario):
Perubahan iklim menjadi salah satu tantangan serius yang dihadapi oleh Indonesia dalam pemenuhan kebutuhan pangan. Salah satu fenomena perubahan iklim yang berpengaruh terhadap sektor pertanian khususnya tanaman pangan adalah El Nino Southern Oscillation (ENSO) yang terdiri dari El Nino dan La Nina. ENSO menyebabkan variabilitas curah hujan sehingga berdampak buruk bagi produksi tanaman pangan seperti padi, jagung dan kedelai. Penelitian ini bertujuan untuk (1) mengidentifikasi provinsi terdampak ENSO di Indonesia dan (2) menganalisis dampak ENSO dan determinan lainnya terhadap produksi tanaman pangan (padi, jagung, kedelai) di provinsi yang terdampak. Penelitian ini menggunakan panel data sekunder tahun 2010-2017 dari 16 provinsi terdampak ENSO. Korelasi Pearson dan regresi panel statis digunakan untuk menjawab tujuan penelitian. Fenomena ENSO diproksi melalui curah hujan. Hasil penelitian menunjukkan sebagian besar provinsi di Indonesia terdampak ENSO, yang terlihat dari korelasi negatif dan signifikan antara Oceanic Nino Index (ONI) dan curah hujan. Regresi panel statis menunjukkan ENSO berpengaruh signifikan terhadap produksi padi dan kedelai melalui indikator curah hujan. El Nino yang disertai penurunan curah hujan signifikan berdampak lebih besar terhadap produksi padi dan kedelai, sedangkan La Nina yang disertai peningkatan curah hujan signifikan memiliki dampak lebih besar terhadap produksi kedelai. Secara umum, El Nino memiliki pengaruh yang lebih besar terhadap produksi tanaman pangan.
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Marthinus, Liberatus, Avrionesti Avrionesti, Yosafat Donni Haryanto e Latifah Nurul Qomariyatuzzamzami. "Analysis of Upwelling Parameters when the El Nino Southern Oscillation (ENSO) Occurred in the Halmahera Sea". Tropical Marine Environmental Sciences 2, n. 2 (1 maggio 2024): 36–41. http://dx.doi.org/10.31258/tromes.2.2.36-41.
Testo completoAbstract (sommario):
Upwelling events that occur in the Halmahera Sea are influenced by the El Nino Southern Oscillation (ENSO). Upwelling can cause sea surface temperatures to be lower than normal, affecting the potential of fishery resources in the region. The purpose of this study was to determine the conditions of sea surface temperature, chlorophyll-a content, salinity, and upwelling conditions when viewed from the parameters of chlorophyll-α content and sea surface temperature when El Nino was strong, El Nino was weak, La Nina was strong, and La Nina weak and in normal conditions in the Halmahera Sea region. The data used in this study include the Oceanic Nino Index, sea surface temperature, salinity, and chlorophyll-α content during the 2010–2019 period. A quantitative descriptive research type is used by filtering ENSO data to determine when ENSO occurred, then visualizing the data in each parameter and analyzing it. The results of this study show that upwelling is known to occur in the northern to western parts of the Halmahera Sea. When the El Nino phase is vital, the upwelling parameter changes, the sea surface temperature decreases to 27.1⁰C, the chlorophyll-α content increases to 0.70 mg/m3 compared to the normal phase, and the upwelling intensity changes
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Kasim, Kamaluddin, Agustinus Anung Widodo e Andhika Prima Prasetyo. "PENGARUH EPISODE LA NINA DAN EL NINO TERHADAP PRODUKSI BEBERAPA PELAGIS KECIL YANG DIDARATKAN DI PANTAI UTARA JAWA". Jurnal Penelitian Perikanan Indonesia 17, n. 4 (30 gennaio 2017): 257. http://dx.doi.org/10.15578/jppi.17.4.2011.257-264.
Testo completoAbstract (sommario):
Sumberdaya ikan pelagis di Laut Jawa telah dimanfaatkan secara intensif sejak dekade tahun 1980-an danmerupakan kegiatan perikanan utama di Indonesia. Beberapa famili ikan pelagis dominan yang tertangkap diantaranya dari famili Clupeidae, Carangidae dan Scombridae. Penelitian bertujuan untuk mengetahui pengaruh periode La Nina dan El Nino terhadap produksi beberapa jenis ikan yang dominan tertangkap di Pantai Utara Jawa. Penelitian dilakukan selama bulan April sampai dengan September 2010 dengan mengumpulkan data pendaratan ikan melalui enumerator di beberapa lokasi pendaratan ikan yakni PPN Pekalongan; PPI Bajomulyo II dan Bajomulyo I – Juwana; serta PPIRembang. Data SouthernOscilation Indiex (SOI) diperoleh dari situs resmi BadanMetereologi pemerintah Australia. Hasil penelitian menunjukkan bahwa puncak produksi ikan layang, banyar dan tongkol yang didaratkan di Pantai Utara Jawa relatif lebih panjang pada periode La Nina dibandingkan pada periode El Nino. Rata-rata produksi ikan selar berbeda nyata (P<0,05) antara periode El Nino dan Periode La Nina sedangkan jenis layang, banyar dan tongkol tidak berbeda nyata (P>0,05). Pelagic fish resources in the Northern Coast of Java has been exploited since early 1980’s as themost intensive fishery in Indonesia. Several families of pelagic fish that commonly exploited in Java Sea are Clupeidae, Carangidae, and Scombridae. The study was conducted from March to September 2010 by compiling fish landing data from field enumerators in the several fish landing locations such as PPN Pekalongan, PPI bajomulyo I and Bajomulyo II at Juwana, and PPI Rembang. The Current work aims to determine the production of small pelagic fishery affected by El Nino or La Nina evidence. Southern Oscillation Index (SOI) parameter was used as an indicator of climate change parameter. The results show that the peak of season production of russel’s scad (Decapterus russelli), indianmackerel (Rastrelliger kanagurta), and frigate mackerel (Auxis thazard) weremore longer during the periode of La Nina than those of the periode of El Nino. Average production values of yellowstrip trevally (Selaroides leptolepis) were significantly different during La Nina periodes compared to El Nino periodes (P<0,05) while russel’s scad, indian mackerel, and frigate mackerel did not show significantly different.