Academic literature on the topic 'Climate change and natural hazards not elsewhere classified'
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Journal articles on the topic "Climate change and natural hazards not elsewhere classified"
1
Chaudhary, Muhammad T., and Awais Piracha. "Natural Disasters—Origins, Impacts, Management." Encyclopedia 1, no. 4 (October 30, 2021): 1101–31. http://dx.doi.org/10.3390/encyclopedia1040084.
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Natural hazards are processes that serve as triggers for natural disasters. Natural hazards can be classified into six categories. Geophysical or geological hazards relate to movement in solid earth. Their examples include earthquakes and volcanic activity. Hydrological hazards relate to the movement of water and include floods, landslides, and wave action. Meteorological hazards are storms, extreme temperatures, and fog. Climatological hazards are increasingly related to climate change and include droughts and wildfires. Biological hazards are caused by exposure to living organisms and/or their toxic substances. The COVID-19 virus is an example of a biological hazard. Extraterrestrial hazards are caused by asteroids, meteoroids, and comets as they pass near earth or strike earth. In addition to local damage, they can change earth inter planetary conditions that can affect the Earth’s magnetosphere, ionosphere, and thermosphere. This entry presents an overview of origins, impacts, and management of natural disasters. It describes processes that have potential to cause natural disasters. It outlines a brief history of impacts of natural hazards on the human built environment and the common techniques adopted for natural disaster preparedness. It also lays out challenges in dealing with disasters caused by natural hazards and points to new directions in warding off the adverse impact of such disasters.
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Hussain, Muhammad Awais, Shuai Zhang, Muhammad Muneer, Muhammad Aamir Moawwez, Muhammad Kamran, and Ejaz Ahmed. "Assessing and Mapping Spatial Variation Characteristics of Natural Hazards in Pakistan." Land 12, no. 1 (December 31, 2022): 140. http://dx.doi.org/10.3390/land12010140.
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One nation with the highest risk of climate catastrophes is Pakistan. Pakistan’s geographical nature makes it susceptible to natural hazards. Pakistan is facing regional differences in terms of climate change. The frequency and intensity of natural hazards due to climate change vary from place to place. There is an urgent need to recognize the spatial variations in natural hazards inside the country. To address such problems, it might be useful to map out the areas that need resources to increase resilience and accomplish adaptability. Therefore, the main goal of this research was to create a district-level map that illustrates the multi-hazard zones of various regions in Pakistan. In order to comprehend the geographical differences in climate change and natural hazards across Pakistan, this study examines the relevant literature and data currently available regarding the occurrence of natural hazards in the past. Firstly, a district-level comprehensive database of Pakistan’s five natural hazards (floods, droughts, earthquakes, heatwaves, and landslides) was created. Through consultation with specialists in related areas, hazard and weighting factors for a specific hazard were specified based on the structured district-level historical disaster database of Pakistan. After that, individual and multi-hazard ratings were computed for each district. Then, using estimated multi-hazard scores, the districts of Pakistan were classified into four zones. Finally, a map of Pakistan’s multi-hazard zones was created per district. The study results are essential and significant for policymakers to consider when making decisions on disaster management techniques, that is, when organizing disaster preparedness, mitigation, and prevention plans.
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Salzmann, N., C. Huggel, P. Calanca, A. Díaz, T. Jonas, C. Jurt, T. Konzelmann, et al. "Integrated assessment and adaptation to climate change impacts in the Peruvian Andes." Advances in Geosciences 22 (October 13, 2009): 35–39. http://dx.doi.org/10.5194/adgeo-22-35-2009.
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Abstract. The Andes as mountain regions worldwide, provide fundamental resources, not only for the local population. Due to the topographic characteristics, the potential for natural hazards is higher than elsewhere. In these areas, assessments of climate change impacts and the development of adequate adaptation strategies therefore become particular important. The data basis, however, is often scarce. Moreover, perceptions of changes and needs are often divergent between national and local levels, which make the implementation of adaptation measures a challenge. Taking the Peruvian Andes as an example, this paper aims at initiating a discussion about scientific baseline and integrative concepts needed to deal with the adverse effects of climate change in mountain regions.
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Nakatani, Ryota. "Fiscal Rules for Natural Disaster- and Climate Change-Prone Small States." Sustainability 13, no. 6 (March 12, 2021): 3135. http://dx.doi.org/10.3390/su13063135.
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How should small states formulate a countercyclical fiscal policy to achieve economic stability and fiscal sustainability when they are prone to natural disasters, climate change, commodity price changes, and uncertain donor grants? We study how natural disasters and climate change affect long-term debt dynamics, and we propose cutting-edge fiscal policy rules. We find the primacy of a recurrent expenditure rule based on non-resource and non-grant revenue, interdependently determined by government debt and budget balance targets with expected disaster shocks. This innovative fiscal rule is classified as a natural disaster-resilient fiscal rule, which comprises a plethora of new advantages compared to existing fiscal rules. This new type of fiscal rule can be called as the third-generation fiscal rule. It encompasses natural disasters and climate change, uses budget data only, avoids the need for escape clauses, and operates on a timely basis. Our rule-based fiscal policy framework is practically applicable for many developing countries facing an increasing frequency and impact of devastating natural hazards, and climatic change.
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Gibson, A. J., D. C. Verdon-Kidd, and G. R. Hancock. "Characterising the seasonal nature of meteorological drought onset and termination across Australia." Journal of Southern Hemisphere Earth Systems Science 72, no. 1 (February 8, 2022): 38–51. http://dx.doi.org/10.1071/es21009.
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Drought, and its associated impacts, represents one of the costliest natural hazards worldwide, highlighting the need for prediction and preparedness. While advancements have been made in monitoring current droughts, prediction of onset and termination have proven to be much more challenging. This is because drought is unlike any other natural hazard and cannot be characterised by a single weather event. There is also a high degree of spatial variability in this phenomenon across the vast expanse of the Australian continent. Therefore, by characterising regionally specific expressions of drought, we may improve drought predictability. In this study, we analyse the timing of onset and termination of meteorological droughts across Australia from 1900 to 2015, as well as their local and regional climate controls. We show that meteorological drought onset has a strong seasonal signature across Australia that varies spatially, whereas termination is less seasonally restricted. Using a Random Forest modelling approach with predictor variables representative of large-scale ocean-atmosphere phenomena and local climate, up to 75% of the variance in the Standardised Precipitation Index during both onset and termination could be explained. This study offers support to continued development in long-lead forecasting of local and large-scale ocean/atmosphere conditions to improve drought prediction in Australia and elsewhere.
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Llasat, M. C., M. Llasat-Botija, and L. López. "A press database on natural risks and its application in the study of floods in Northeastern Spain." Natural Hazards and Earth System Sciences 9, no. 6 (December 7, 2009): 2049–61. http://dx.doi.org/10.5194/nhess-9-2049-2009.
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Abstract. The aim of this work is to introduce a systematic press database on natural hazards and climate change in Catalonia (NE of Spain) and to analyze its potential application to social-impact studies. For this reason, a review of the concepts of risk, hazard, vulnerability and social perception is also included. This database has been built for the period 1982–2007 and contains all the news related with those issues published by the oldest still-active newspaper in Catalonia. Some parameters are registered for each article and for each event, including criteria that enable us to determine the importance accorded to it by the newspaper, and a compilation of information about it. This ACCESS data base allows each article to be classified on the basis of the seven defined topics and key words, as well as summary information about the format and structuring of the new itself, the social impact of the event and data about the magnitude or intensity of the event. The coverage given to this type of news has been assessed because of its influence on construction of the social perception of natural risk and climate change, and as a potential source of information about them. The treatment accorded by the press to different risks is also considered. More than 14 000 press articles have been classified. Results show that the largest number of news items for the period 1982–2007 relates to forest fires and droughts, followed by floods and heavy rainfalls, although floods are the major risk in the region of study. Two flood events recorded in 2002 have been analyzed in order to show an example of the role of the press information as indicator of risk perception.
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Van Bogaert, Rik, Sylvie Gauthier, Frédéric Raulier, Jean-Pierre Saucier, Dominique Boucher, André Robitaille, and Yves Bergeron. "Exploring forest productivity at an early age after fire: a case study at the northern limit of commercial forests in Quebec." Canadian Journal of Forest Research 45, no. 5 (May 2015): 579–93. http://dx.doi.org/10.1139/cjfr-2014-0273.
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Interest in northern forests is increasing worldwide for both timber production and climate change mitigation. Studies exploring forest productivity at an early age after fire and its determining factors are greatly needed. We studied forest productivity, defined as the combined quality of stocking and growth, of 116 10- to 30-year-old postfire sites. The sites were spread over a 90 000 km2 area north of the Quebec commercial forestry limit and were dominated by Picea mariana (Mill.) B.S.P. and Pinus banksiana Lamb. Seventy-two percent of our sites were classified as unproductive, mainly because of poor growth. Because growth was mostly determined by climatic factors, afforestation alone may not be sufficient to increase stand productivity in our study area. In addition, our results suggest that P. banksiana on dry sites may be less resilient to fire than previously thought, presumably because of poor site quality and climate. Overall, this is one of the first studies to explore productivity issues at an early age in natural northern forests, and the analysis scheme that defines forest productivity as the result of growth and stocking could provide a useful tool to identify similar issues elsewhere.
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Baharlouii, M., D. Mafi Gholami, and M. Abbasi. "INVESTIGATING MANGROVE FRAGMENTATION CHANGES USING LANDSCAPE METRICS." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W18 (October 18, 2019): 159–62. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w18-159-2019.
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Abstract. Generally, investigation of long-term mangroves fragmentation changes can be used as an important tool in assessing sensitivity and vulnerability of these ecosystems to the multiple environmental hazards. Therefore, the aim of this study was to reveal the trend of mangroves fragmentation changes in Khamir habitat using satellite imagery and Fragstats software during a 30-year period (1986–2016). To this end, Landsat images of 1986, 1998, and 2016 were used and after computing the normalized difference vegetation index (NDVI) to distinguish mangroves from surrounding water and land areas, images were further processed and classified into two types of land cover (i.e., mangrove and non-mangrove areas) using the maximum likelihood classification method. By determining the extent of mangroves in the Khamir habitat in the years of 1986, 1998 and 2017, the trend of fragmentation changes was quantified using CA, NP, PD and LPI landscape metrics. The results showed that the extent of mangroves in Khamir habitat (CA) decreased in the period post-1998 (1998–2016). The results also showed that, the NP and PD increased in the period of post-1998 and in contrast, the LPI decrease in this period. These results revealed the high degree of vulnerability of mangroves in Khamir habitat to the drought occurrence and are thus threatened by climate change. We hope that the results of this study stimulate further climate change adaptation planning efforts and help decision-makers prioritize and implement conservative measures in the mangrove ecosystems on the northern coasts of the PG and the GO and elsewhere.
9
Bhave, Ajay Gajanan, Ashok Mishra, and Narendra Singh Raghuwanshi. "A brief review of assessment approaches that support evaluation of climate change adaptation options in the water sector." Water Policy 16, no. 5 (April 8, 2014): 959–72. http://dx.doi.org/10.2166/wp.2014.097.
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Options for adapting to changing water resources' availability due to climate change have been routinely assessed for ability to alleviate expected impacts. Methods for evaluating effectiveness of adaptation options are usually based on, fundamentally different but complementary, hazards and vulnerability assessment based approaches. In this paper, we describe a framework to integrate these approaches for improved climate change adaptation policy making. We further review assessment approaches and corresponding criteria used for evaluation of planned adaptation options in the water sector. A synthesis of methods for evaluation reveals four main categories: (i) natural sciences based, (ii) social sciences based, (iii) overlapping and (iv) trans-disciplinary. Criteria from reviewed studies are classified using a scale vis-à-vis theme based classification, and unified into a criteria set covering important adaptation requirements while allowing case-specific modification. We find that important criteria, such as temporal scope of adaptation and implementability, have not been explicitly considered in scientific literature. The type of adaptation has an important bearing on evaluation and should be effectively modelled to make an informed decision regarding performance. Moreover, we suggest that it is important to explicitly consider influence of future changes in non-climatic factors along with climatic changes for a more robust analysis.
10
Li, Xueqin, Lindsay C. Stringer, Sarah Chapman, and Martin Dallimer. "How urbanisation alters the intensity of the urban heat island in a tropical African city." PLOS ONE 16, no. 7 (July 13, 2021): e0254371. http://dx.doi.org/10.1371/journal.pone.0254371.
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Due to the combined effects of urban growth and climate change, rapid urbanisation is particularly challenging in African cities. Areas that will house a large proportion of the urban population in the future coincide with where natural hazards are expected to occur, and where hazard risk management institutions, knowledge, and capacity are often lacking. One of the challenges posed by rapid urbanisation is the Urban Heat Island (UHI) effect, whereby urban areas are warmer than the surrounding rural areas. This study investigates urbanisation patterns and alterations in surface UHI (SUHI) intensity for the Kampala urban cluster, Uganda. Analyses show that between 1995 and 2017, Kampala underwent extensive changes to its urban built-up area. From the centre of the city to adjoining non-built up areas in all directions, the urban land cover increased from 12,133 ha in 1995 to 25,389 ha in 2016. The area of SUHI intensity in Kampala expanded significantly over the 15-year period of study, expanding from 22,910 ha in 2003 to 27,900 ha in 2016, while the annual daytime SUHI of 2.2°C in 2003 had decreased to 1.9°C by 2017. Although SUHI intensity decreased in some parts of the city, elsewhere it increased, suggesting that urbanisation does not always lead to a deterioration of environmental conditions. We postulate that urban development may therefore not necessarily create an undesirable impact on local climate if it is properly managed. Rapidly growing cities in Africa and elsewhere should ensure that the dynamics of their development are directed towards mitigating potentially harmful environmental impacts, such as UHI effect through careful planning that considers both bluespaces and greenspaces.