Relevant bibliographies by topics / Latitudo

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Latitudo'

Author: Grafiati
Published: 10 March 2023

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Journal articles on the topic "Latitudo"

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YUAN, YAN-MEI, and XIAO-FENG XUE. "Two new species of eriophyid mites (Acari: Eriophyidae) from Malaysia." Zootaxa 4613, no. 1 (June 4, 2019): 152–60. http://dx.doi.org/10.11646/zootaxa.4613.1.8.

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Two new species of the family Eriophyidae (Acari: Eriophyoidea) from Mount Trusmadi, Malaysia, are described and illustrated. They are Neodicrothrix grandcaputus sp. nov. on Stachyurus himalaicus (Stachyuraceae) and Latitudo asiaticis sp. nov. on Psychotria asiatica (Rubiaceae). Both of the two new species are vagrant on the lower leaf surface. No damage to the host was observed. In addition to the description, a key to species of Neodicrothrix is provided.
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Vleck, Carol M., and Jessamyn A. Van Hook. "Absence of Daily Rhythms of Prolactin and Corticosterone in Adélie Penguins Under Continuous Daylight." Condor 104, no. 3 (August 1, 2002): 667–71. http://dx.doi.org/10.1093/condor/104.3.667.

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Abstract Plasma prolactin and corticosterone levels were measured in free-living Adélie Penguins (Pygoscelis adeliae) at Torgersen Island, Antarctica (64°S latitude), at 4-hr intervals throughout the day during early January 1997 and examined for evidence of a 24-hr rhythm. At this season and latitude, natural daylight is continuous. No significant change in the plasma level of either corticosterone or prolactin was found across the day in this population. In contrast, hormone levels in birds at lower latitudes typically fluctuate between night and day. Our data would not have revealed circadian rhythms within individuals even if they exist, because each bird was only sampled once. The lack of hormone rhythms in the population, however, suggests that changes in light intensity at this latitude in the Antarctic summer are not sufficient to entrain, or perhaps even to maintain, circadian rhythms of individuals. Ausencia de Ciclos Diarios de Prolactina y Corticosterona en Pygoscelis adeliae bajo Luz Solar Continua Resumen. A principios de enero de 1997 en la Isla Torgersen, Antártica (latitud 64°S), se midieron cada 4 horas los niveles de prolactina y corticosterona en el plasma de Pygoscelis adeliae en busca de evidencia de un ciclo hormonal de 24 horas. Durante esta estación del año y a esta latitud, la luz solar es continua. No se encontraron cambios significativos en los niveles de prolactina ni de corticosterona en el plasma a través del día en esta población. En contraste, los niveles hormonales en aves en menores latitudes fluctúan típicamente entre el día y la noche. Aún si existiesen, nuestros datos no habrían revelado la existencia de ritmos circadianos para cada individuo, dado que cada animal fue muestreado una sola vez. Sin embargo, la ausencia de ciclos hormonales a nivel poblacional, sin embargo, indica que los cambios de luz a esta latitud en el verano antártico no son suficientes para sincronizar, o quizás ni siquiera para mantener, ritmos circadianos en los individuos.
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Ortenberg, Veronica. "An Unknown Late Anglo-Saxon Text About old St Peter's in Rome." Antiquaries Journal 70, no. 1 (March 1990): 115–17. http://dx.doi.org/10.1017/s0003581500070347.

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Ms Royal 2. B.V. in the British Library, London, is a tenth-century Psalter from Winchester, possibly from Nunnaminster. On the last folios of this MS (189-190) were added in the late tenth century, miscellaneous computistical entries, which include the years ofChrist, the ages of the world, the ages and generations, the numbering and reckoning of years and the number of years from the Creation to the foundation of Rome. Two texts, the ‘De longitudine mundi’ (fol. 189) and ‘Longitudo, latitudo et altitudo templi et tabernaculum (sic)’ (fols. 189randv) precede, and another, ‘De area Noe’ (fol. 189v) follows a short text entitled ‘De aedificatio (sic) ecclesie sancti Petri apostoli’ at folio 189v.With the exception of this last, all these texts are also found in a ninth-century MS, British Library, Cotton Vespasian B.VI (fols. 106-70). To the best of my knowledge, the ‘De aedificatio[ne]’ does not exist in any other manuscript, and there is no known source for it. The present note aims solely at bringing this text to light and providing an edition of it; an examination of its implications for English history and architecture will be provided elsewhere.
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Ni, Qinbiao, Xiaoming Zhai, Guihua Wang, and David P. Marshall. "Random Movement of Mesoscale Eddies in the Global Ocean." Journal of Physical Oceanography 50, no. 8 (August 1, 2020): 2341–57. http://dx.doi.org/10.1175/jpo-d-19-0192.1.

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AbstractIn this study we track and analyze eddy movement in the global ocean using 20 years of altimeter data and show that, in addition to the well-known westward propagation and slight polarity-based meridional deflections, mesoscale eddies also move randomly in all directions at all latitudes as a result of eddy–eddy interaction. The speed of this random eddy movement decreases with latitude and equals the baroclinic Rossby wave speed at about 25° of latitude. The tracked eddies are on average isotropic at mid- and high latitudes, but become noticeably more elongated in the zonal direction at low latitudes. Our analyses suggest a critical latitude of approximately 25° that separates the global ocean into a low-latitude anisotropic wavelike regime and a high-latitude isotropic turbulence regime. One important consequence of random eddy movement is that it results in lateral diffusion of eddy energy. The associated eddy energy diffusivity, estimated using two different methods, is found to be a function of latitude. The zonal-mean eddy energy diffusivity varies from over 1500 m2 s−1 at low latitudes to around 500 m2 s−1 at high latitudes, but significantly larger values are found in the eddy energy hotspots at all latitudes, in excess of 5000 m2 s−1. Results from this study have important implications for recently developed energetically consistent mesoscale eddy parameterization schemes which require solving the eddy energy budget.
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Li, Xiaoyong, Houpu Li, Guohui Liu, Shaofeng Bian, and Chenchen Jiao. "Simplified Expansions of Common Latitudes with Geodetic Latitude and Geocentric Latitude as Variables." Applied Sciences 12, no. 15 (August 3, 2022): 7818. http://dx.doi.org/10.3390/app12157818.

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Using the symbolic calculation program Mathematica and based on the power series expansions of the common latitude with geodetic latitude as a variable, power series expansions of the common latitude with geocentric latitude as the variable are derived. The coefficients of the two groups of formulas are based on the ellipsoid eccentricity e and the ellipsoid third flattening n, which make the expansions more uniform. Taking the CGCS2000 as an example, numerical analysis is applied to verify the accuracy and reliability of the derived power series expansions. By analyzing and calculating the truncation error of the common latitude based on ellipsoidal eccentricity e and the third flattening n expansion to different orders, we obtain simplified, practical formulas for the common latitude that satisfy the requirement of geodesic accuracy. Moreover, we show that the practical formula derived has higher calculation efficiency and easier dissemination, enriches the theory of map projection, and provides a basis for better display of remote sensing images.
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Gao, PengXin, KeJun Li, and QiXiu Li. "Latitude migration of solar activity at high latitudes." Chinese Science Bulletin 53, no. 1 (January 2008): 8–11. http://dx.doi.org/10.1007/s11434-007-0422-7.

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Upadhyaya, H. D., K. N. Reddy, Sube Singh, C. L. L. Gowda, Mohd Irshad Ahmed, and Senthil Ramachandran. "Latitudinal patterns of diversity in the world collection of pearl millet landraces at the ICRISAT genebank." Plant Genetic Resources 12, no. 1 (August 21, 2013): 91–102. http://dx.doi.org/10.1017/s1479262113000348.

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The genebank at ICRISAT, Patancheru, India conserves a total of 19,063 pearl millet landraces from latitudes ranging from 33.00° in the Southern Hemisphere (SH) to 34.37° in the Northern Hemisphere (NH). In the present study, the NH was found to be the major region for growing pearl millet landraces (80.5%). More landraces were found at lower latitudes ( < 20°) in both hemispheres than at higher latitudes. The latitude range of 10°–15° in the NH and 15°–20° in the SH were found to be important source regions for the prevalence of pearl millet, with 39.6% and 13.1% in the world collection of landraces, respectively. Landraces from lower-latitude regions on either side of the equator varied widely for all traits. Landraces from the 5°–10°N latitude region flowered late and grew tall in the rainy and post-rainy seasons and produced more tillers. Landraces from the 10°–15°N latitude region produced few tillers and had long and thick panicles with larger seeds. Long-bristled bird-resistant landraces were considerable at latitudes of 10°–15°S and 20°–25°S. The minimum temperature at the collection sites was found to be one of the important factors for determining the patterns of the prevalence of pearl millet across the latitudes. Late-maturing, tall and high-tillering landraces from lower-latitude regions were better sources for fodder production. Early-maturing landraces producing long and thick panicles with large seeds from mid-latitude regions (15°–20°) in both hemispheres were useful for developing high-yielding cultivars. Using the latitudinal patterns of diversity in pearl millet landraces, missions may be launched to explore high-diversity, under-collected and threatened areas for the collection of materials of interest at latitudes of 15°–20°.
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Chen, Yiding, Libo Liu, Huijun Le, Hui Zhang, and Ruilong Zhang. "Responding trends of ionospheric F2-layer to weaker geomagnetic activities." Journal of Space Weather and Space Climate 12 (2022): 6. http://dx.doi.org/10.1051/swsc/2022005.

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Geomagnetic activities frequently occur in varying degrees. Strong geomagnetic activities, which have been widely investigated, occur occasionally; they can cause distinguishable and significant disturbances in the ionosphere. Weaker geomagnetic activities frequently appear, whereas their effects are generally difficult to be distinguished from complex ionospheric variations. Weaker geomagnetic activities play important roles in ionospheric day-to-day variability thus should deserve further attention. In this study, long-term (longer than one solar cycle) measurements of the F2-layer critical frequency (foF2) were collected to statistically investigate ionospheric responses to weaker geomagnetic activities (Ap < 60). The responding trends of low- to high-latitude foF2 to increasing geomagnetic activity are presented for the first time; they are statistically evident. Both increasing and decreasing trends can occur, depending on latitudes and seasons. The trend gradually transits from high-latitude decreasing trends to equatorial increasing trends with decreasing latitude, and this transition is seasonally dependent. As a result, the trend has a seasonal difference at mid-latitudes. The responding trend is generally more distinct at higher latitudes and in the equatorial region than at mid-latitudes, and the responding intensity is largest at higher latitudes. Although theoretically, geomagnetic activities can disturb the ionosphere through multiple mechanisms, the morphology of the trend suggests that the frequent weaker geomagnetic activities modulate the high- to low-latitude ionosphere mainly through disturbing high-latitude thermospheric composition and further altering the thermospheric background circulation.
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Myllys, M., N. Partamies, and L. Juusola. "Latitude dependence of long-term geomagnetic activity and its solar wind drivers." Annales Geophysicae 33, no. 5 (May 28, 2015): 573–81. http://dx.doi.org/10.5194/angeo-33-573-2015.

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Abstract. To validate the usage of global indices in studies of geomagnetic activity, we have examined the latitude dependence of geomagnetic variations in Fennoscandia and Svalbard from 1994 to 2010. Daily standard deviation (SD) values of the horizontal magnetic field have been used as a measure of the ground magnetic disturbance level. We found that the timing of the geomagnetic minimum depends on the latitude region: corresponding to the minimum of sunspot cycle 22 (in 1996), the geomagnetic minimum occurred between the geomagnetic latitudes 57–61° in 1996 and at the latitudes 64–67° in 1997, which are the average auroral oval latitudes. During sunspot cycle 23, all latitude regions experienced the minimum in 2009, a year after the sunspot minimum. These timing differences are due to the latitude dependence of the 10 s daily SD on the different solar wind drivers. In the latitude region of 64–67°, the impact of the high-speed solar wind streams (HSSs) on the geomagnetic activity is the most pronounced compared to the other latitude groups, while in the latitude region of 57–61°, the importance of the coronal mass ejections (CMEs) dominates. The geomagnetic activity maxima during ascending solar cycle phases are typically caused by CME activity and occur especially in the oval and sub-auroral regions. The strongest geomagnetic activity occurs during the descending solar cycle phases due to a mixture of CME and HSS activity. Closer to the solar minimum, less severe geomagnetic activity is driven by HSSs and mainly visible in the poleward part of the auroral region. According to our study, however, the timing of the geomagnetic activity minima (and maxima) in different latitude bands is different, due to the relative importance of different solar wind drivers at different latitudes.
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Sanchez-Marroquin, A., O. Arnalds, K. J. Baustian-Dorsi, J. Browse, P. Dagsson-Waldhauserova, A. D. Harrison, E. C. Maters, et al. "Iceland is an episodic source of atmospheric ice-nucleating particles relevant for mixed-phase clouds." Science Advances 6, no. 26 (June 2020): eaba8137. http://dx.doi.org/10.1126/sciadv.aba8137.

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Ice-nucleating particles (INPs) have the potential to remove much of the liquid water in climatically important mid- to high-latitude shallow supercooled clouds, markedly reducing their albedo. The INP sources at these latitudes are very poorly defined, but it is known that there are substantial dust sources across the high latitudes, such as Iceland. Here, we show that Icelandic dust emissions are sporadically an important source of INPs at mid to high latitudes by combining ice-nucleating active site density measurements of aircraft-collected Icelandic dust samples with a global aerosol model. Because Iceland is only one of many high-latitude dust sources, we anticipate that the combined effect of all these sources may strongly contribute to the INP population in the mid- and high-latitude northern hemisphere. This is important because these emissions are directly relevant for the cloud-phase climate feedback and because high-latitude dust emissions are expected to increase in a warmer climate.
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Dissertations / Theses on the topic "Latitudo"

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Nannini, Andrea. "La metafisica di Giovanni da Ripa. Le distinctiones 2, 3 e 8 del Commento Sentenziario: edizione del testo e studio dottrinale." Doctoral thesis, Universita degli studi di Salerno, 2014. http://hdl.handle.net/10556/1447.

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2012 - 2013
The aim of this Doctoral work is double: (a) to offer the complete edition of three important distinctiones – the second, the third and the eighth – coming from the Sentence Commentary of the Franciscan John of Ripa, who lectured in Paris in the period 1354-1358. These three distinctiones constitute a homogeneous group of questions dealing with the metaphysical issues of the existence and nature of God (immensitas) in its distinction from the nature of created beings (infinitas/finitas), together with the original mechanism called replicatio unitatis divinae which regulates the generation of all created beings [Distinctio 2], the analogy between God and creatures, with the lucid restriction – consciously elaborated after Duns Scotus – of the univocity in the sole created domain [Distinctio 3], and the formal distinction between all the perfectiones originally contained in the divine essence, which do not introduce any form of multiplicity in the Unity of the supersimplex (immensa) divine essence [Distinctio 8]; (b) to offer an elaborated study of the themes present in these distinctiones, not only regarding to Ripa’s thought, but also through the analysis of related philosophical perspectives (Hugolinus of Orvieto, Pierre Ceffons, John of Mirecourt, Francis de Mayronis, Francis of Appignano, Gregory of Rimini and William of Ockham). This duplex intent is reflected in the two volumes which compose this thesis, which aims to discover the thought of a long-time underestimated philosopher. [edited by author]
XII n.s.
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León, Federico. "Adjustment of Peruvian family violence to the psychobiogeographic theory of mental health." Pontificia Universidad Católica del Perú, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/101513.

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The psychobiogeographic theory, considering the extent of exposure to ultraviolet radiation, predicts a latitudinal variation of mental health. An analysis of questionnaire responses from 12,604 women in the Peru 2000 Demographic and Family Health Survey was undertaken to test the hypothesis that physical and psychological violence exerted by husbands and parents against women increases with distance from the Equator. The observed effects of latitude were consistent with the theory in the Pacific desert, Sierra steppe, Puna, and Yunga sites, but not in the Amazon eco-region, which could be due to an excess of vitamin D produced north of 5º 50’ S. The theory’s hypotheses concerning urbanization and the Humboldt Current were supported, but the one on altitude was not
Considerando el grado de exposición a radiación ultravioleta, la teoría psicobíogeográfica predice una variación latitudinal de la salud mental. Respuestas de 12 604 mujeres en la Encuesta Demográfica y de Salud Familiar Perú 2000 fueron analizadas para determinarsi la violencia física y psicológica ejercida por esposos y padres aumenta con la distancia al ecuador. Los efectos de la latitud fueron consistentes con la teoría en el desierto del Pacífico, la estepa serrana, la puna, y la eco-región Yunga, no así en la Amazonía, tal vez por la producción excesiva de vitamina D al norte de 5º 50’ S. No se halló efectos de la altura, pero los de la urbanización y la corriente de Humboldt fueron los predichos.
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Дядечко, Алла Миколаївна, Алла Николаевна Дядечко, Alla Mykolaivna Diadechko, and A. S. Ponomarenko. "Google latitude." Thesis, Видавництво СумДУ, 2010. http://essuir.sumdu.edu.ua/handle/123456789/18297.

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Oliver, Kevin Ian Colmcille. "Elements of the thermohaline circulation : high latitude buoyancy forcing and low latitude mixing." Thesis, University of East Anglia, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396699.

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León, Federico R. "The latitudinal tilts of wealth and education in Peru: Testing them, explaining them, and reflecting on them." Economía, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/117649.

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Comparisons between countries around the globe reported since 1999 reveal that nations’ wealth consistently increases with distance from the Equator. Is Peru’s territory exempt from this trend? This study used GPS coordinates, questionnaire data, climate files, and census information from the 2000 Peru Demographic and Health Survey, Climate Wizard, and G-Econ data sets toreconcile the contradictory national evidence and understand the role of certain geophysical and social variables. Household assets increase from north to south in the Brack ecological regionswith latitudinal orientation which were studied (Desert, Puna, Yunga, Amazon), especially in rural settings, and as does women’s education, except in the Amazon. Neither temperature nor fourteen other geophysical and social variables account for such effects, though women’s domestic power explains them in the Yunga ecoregion. The findings can be understood through two theoretical perspectives: one, according to the evolutionary theses of Lynn, Rushton, and Kanazawa, suggests the genetic fixation of differential intellectual levels caused by an ancestral adaptation of Peruvian to various conditions of climate and altitude. The other, combining what is known about ultraviolet radiation, vitamin D, and production of sexual hormones with Zajon’sconfluence theory, is defined by fertility rate and the consequent intellectual home environment for the child. Both predict the increment of IQ and educational PISA scores from north to south Peru, but one points toward education and the other to family planning as human development strategies.
Resultados de comparaciones reportadas entre países alrededor del globo desde 1999 indican quela riqueza de las naciones crece consistentemente con la distancia a la línea ecuatorial. ¿Está el territorio peruano exento de esta tendencia? Para reconciliar la contradictoria evidencia nacional y entender el rol de ciertos factores geofísicos y sociales, este estudio utilizó coordenadas GPS, datos de cuestionarios, archivos de clima, e información censal existentes en varias bases de datos(Encuesta Demográfica y de Salud Perú 2000, Climate Wizard, G-Econ). Los activos del hogar crecen de norte a sur en las regiones ecológicas de Brack de orientación latitudinal estudiadas (desierto, puna, yunga, Amazonía), especialmente en ámbitos rurales, y la educación de la mujer lo hace en las tres primeras. Ni la temperatura ni otras 14 variables geofísicas y sociales dan cuenta de los efectos, aunque el poder doméstico de la mujer los explica en la ecoregión Yunga. Los resultados pueden entenderse en dos perspectivas teóricas. Una, acorde con las tesis evolucionistas de Lynn, Rushton y Kanazawa, sugiere la fijación genética de niveles intelectuales diferenciales producidos por una adaptación ancestral de los peruanos a distintas condicionesde clima y altura. La otra, combinando lo que se conoce sobre radiación ultravioleta, vitamina D, y producción de hormonas sexuales con la teoría de la confluencia de Zajonc, se define por la tasa de fertilidad y consecuente ambiente intelectual hogareño para el niño. Ambas predicen el incremento del cociente intelectual y los puntajes educativos PISA del norte al sur peruanos, pero de una se desprende la educación y de la otra la planificación familiar como estrategias promotoras de desarrollo humano.
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Jiao, Yu. "High Latitude Ionospheric Scintillation Characterization." Miami University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=miami1376909513.

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Fernandez, Marina de Oliveira. "Estrutura latitudinal e temporal de assembleias de cnidários bentônicos em placas de recrutamento em dois portos da costa brasileira." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/41/41133/tde-01052013-160255/.

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Diferentes escalas espaciais, nas quais diferentes fatores variam, podem ser importantes em estudos da biodiversidade. Estrutura e dinâmica de comunidades marinhas epifaunais variam com a latitude, mas como essa variação muda ao longo do tempo é pouco estudada. Investigamos como a estrutura de assembleias de cnidários bentônicos em portos varia temporalmente em uma latitude tropical e uma subtropical e devido a fatores locais. No Brasil, estudamos recrutamento ao longo de quatro trimestres em duas áreas portuárias (Pecém a 3°32′S e Ilhabela a 23°46′S), e ao longo de dois anos em Ilhabela. Verificamos que (1) a riqueza de espécies segue o gradiente latitudinal, com assembleias de cnidários bentônicos mais ricas no Pecém, o local mais tropical; (2) a composição das assembleias varia muito ao longo do tempo, mas é mais constante na latitude tropical e parece ser uma consequência de maior variação sazonal da temperatura na latitude subtropical; (3) as abundâncias dos membros das assembleias de Ilhabela não são sazonalmente definidas; (4) cada local possui diferentes táxons que são mais importantes na estrutura da assembleia; (5) as assembleias em Ilhabela estão estruturadas conforme o microhabitat, interações bióticas e tempo de submersão. Este estudo destaca a importância da perspectiva temporal no entendimento da dinâmica de comunidades, contribui com o entendimento da importância da escala na determinação de padrões em comunidades marinhas e de como impactos humanos no ambiente dificultam a interpretação e previsão de padrões em comunidades
A variety of spatial scales, in which different factors vary, can be important in studies of biodiversity. Structure and dynamics of marine epifaunal communities are known to vary latitudinally, but how that variation changes over time is relatively unstudied. Here we investigate how the structure of fouling assemblages of cnidarians in harbors varies temporally at a tropical and a subtropical latitude and due to local factors. In Brazil, we studied recruitment during four 3 month periods in two harbors (tropical Pecém at 3°32′S and subtropical Ilhabela at 23°46′S) and over two years at Ilhabela. We found that (1) species richness follows a latitudinal gradient with more speciose benthic cnidarian assemblages at tropical Pecém; (2) composition of the assemblages varies widely over time, while being more constant at the tropical latitude and seems to be a consequence of greater seasonal variation in temperature at the subtropical latitude; (3) abundance of members of the assemblages at Ilhabela are not seasonally defined; (4) each site has different taxa that are more important in assemblage structure; (5) assemblages at Ilhabela are structured by microhabitat, biotic interactions and time of submersion. This study highlights the importance of a temporal perspective in understanding community dynamics, contributes to the understanding of the importance of scale in determining patterns of marine communities and how human impacts difficult interpretation and prediction of community patterns
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Lutman, Emma Rachel. "Investigations into high latitude stratospheric chemistry." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338213.

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Wood, R. G. "Rossby waves in mid-latitude oceans." Thesis, University of Essex, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379474.

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Goodman, Jason (Jason Curtis) 1973. "Interannual middle-latitude atmosphere-ocean interactions." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/16779.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2001.
Includes bibliographical references (p. 144-151).
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
This thesis discusses the interaction of atmosphere and ocean in midlatitudes on interannual and decadal timescales. We investigate the extent to which mutuallycoupled atmosphere-ocean feedback can explain the observed coupled variability on these timescales, and look for preferred modes of atmospheric response to forcing by sea-surface temperature anomalies. First, we formulate and study a very simple analytical model of the mutual interaction of the middle-latitude atmosphere and ocean. The model is found to support coupled modes in which oceanic baroclinic Rossby waves of decadal period grow through positive coupled feedback between the thermal forcing of the atmosphere induced by associated SST anomalies and the resulting windstress forcing of the ocean. Growth only occurs if the atmospheric response to thermal forcing is equivalent barotropic, with a particular phase relationship with the underlying SST anomalies. The dependence of the growth rate and structure of the modes on the nature of the assumed physics of air-sea interaction is explored, and their possible relation to observed phenomena discussed. We then construct a numerical model with the same physics; this enables us to consider the effects of nontrivial boundary conditions and background flows within the model. We find that the finite fetch of a closed ocean basin reduces growth rate and can lead to decay. However, the coupled mode described above remains the least-damped, and is thus the pattern most easily energized by stochastic forcing. Using a non-uniform atmospheric background flow focuses perturbation energy into particular areas, so that the coupled mode's expression in the atmosphere becomes fixed in space, rather than propagating. This improves the mode's resemblance to observed patterns of variability, such as the North Atlantic Oscillation, which are generally stationary patterns which fluctuate in intensity. The atmospheric component of the coupled mode exists in a balance between Rossby-wave propagation and vorticity advection. This is the same balance as the "neutral vectors" described by Marshall and Molteni (1993). Neutral vectors are the right singular vectors of the linearized atmospheric model's tendency matrix that have the smallest eigenvalues; they are also the patterns that exhibit the largest response to forcing perturbations in the linear model. We explain how the coupled mode arises as the ocean excites atmospheric neutral vectors. Neutral vectors act as pattern-specific amplifiers of ocean SST anomalies. We then proceed to study the neutral vectors of a quasigeostrophic model with realistic mean flow. We find a striking similarity between these patterns and the dominant patterns of variability observed in both the full nonlinear model and in the real world. We provide a mathematical explanation for this connection. Investigation of the "optimal forcing patterns" - the left singular vectors - proves to be less fruitful. The neutral modes have equivalent barotropic vertical structure, but their optimal forcing patterns are baroclinic and seem to be associated with low level heating. But the horizontal patterns of the forcing patterns are not robust, and are sensitive to the form of the inner product used in the SVD analysis. Additionally, applying "optimal" forcing patterns as perturbations to the full nonlinear model does not generate the response suggested by the linear model.
by Jason Goodman.
Ph.D.
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Books on the topic "Latitudo"

1

Richard, Texier, ed. Richard Texier: Latitude atlantique = Atlantic latitude. Quimper: Editions Palantines, 2001.

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Latitude austral. Vigo [Spain]: Galaxia, 1991.

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Figueiredo, Maria do Pilar. Latitude zero. Lisboa: Escritor, 1999.

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Stauder, Monique. Latitude zero. Amsterdam: Schilt Publishing, 2010.

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Latitude zero. London: Orion, 1997.

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Alegre, Francisco Costa. Latitude 63. S. Tomé: UNEAS, 2006.

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Latitude zero. New York, New York: Viking, an imprint of Penguin Group (USA), 2014.

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Latitude 63. S. Tomé: UNEAS, 2006.

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Vincent, Warwick F., and J. Cynan Ellis-Evans, eds. High Latitude Limnology. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2603-5.

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Rajczak, Kristen. Latitude and longitude. New York, NY: Gareth Stevens Publishing, 2015.

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Book chapters on the topic "Latitudo"

1

Gottschild, Brenda Dixon. "Latitude I." In The Black Dancing Body, 2–11. New York: Palgrave Macmillan US, 2003. http://dx.doi.org/10.1007/978-1-137-03900-2_1.

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Gottschild, Brenda Dixon. "Latitude III." In The Black Dancing Body, 222–25. New York: Palgrave Macmillan US, 2003. http://dx.doi.org/10.1007/978-1-137-03900-2_11.

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Gottschild, Brenda Dixon. "Latitude II." In The Black Dancing Body, 102–7. New York: Palgrave Macmillan US, 2003. http://dx.doi.org/10.1007/978-1-137-03900-2_6.

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Upchurch Sweeney, C. Renn, J. Rick Turner, J. Rick Turner, Chad Barrett, Ana Victoria Soto, William Whang, Carolyn Korbel, et al. "Decision Latitude." In Encyclopedia of Behavioral Medicine, 544. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-1005-9_101897.

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Furnham, Adrian. "Decisional latitude." In People Management in Turbulent Times, 52–54. London: Palgrave Macmillan UK, 2009. http://dx.doi.org/10.1057/9780230239616_13.

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Hawes, Ian. "Filamentous green algae in freshwater streams on Signy Island, Antarctica." In High Latitude Limnology, 1–18. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2603-5_1.

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Green, William J., Thomas J. Gardner, Timothy G. Ferdelman, Michael P. Angle, Lawrence C. Varner, and Philip Nixon. "Geochemical processes in the Lake Fryxell Basin (Victoria Land, Antarctica)." In High Latitude Limnology, 129–48. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2603-5_10.

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Ellis-Evans, J. C., and E. C. G. Lemon. "Some aspects of iron cycling in maritime antarctic lakes." In High Latitude Limnology, 149–64. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2603-5_11.

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Alexander, V., S. C. Whalen, and K. M. Klingensmith. "Nitrogen cycling in Arctic lakes and ponds." In High Latitude Limnology, 165–72. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2603-5_12.

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Priscu, John C. "Photon dependence of inorganic nitrogen transport by phytoplankton in perennially ice-covered antarctic lakes." In High Latitude Limnology, 173–82. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2603-5_13.

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Conference papers on the topic "Latitudo"

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Parviainen, Pekka. "Finnish observers-network." In Light and Color in the Open Air. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/lcoa.1990.thc2.

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Geographic latitude of Finland (between 60° and 70°N) provides a good oppoturnity to observe visually a number of geophysical and atmospherical phenomena. F.ex. aurora is frequent in northern latitudes, during summer months noctilucent clouds (NLC) in southern latitudes. Winter and spring months usually show some good halodisplays.
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Ho, Tu Dac, and Kay Fjørtoft. "Communications Challenges in the Arctic: Oil and Gas Operations Perspective." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61211.

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Challenges when operating offshore systems in the Arctic were addressed and analyzed from general data communications systems to distress communications systems. Two methodologies were developed with tools for estimating: a) Rainfall rate in the worst case as well as the degradation due to the highest rainfall rate to link budget of typical satellite links; b) Performance of any service at a given geographical area or location. The evaluations were for diversified inputs such as geographical locations were ranging from further south to high North; the most typical satellite communications systems in the region; and an abundant list of services dedicated to offshore Oil and Gas industry, the paper has provided a wide range list of results and recommendations when analyzing services performances from low to high latitudes and west to east longitudes. An important conclusion was that voice-relevant services were not working fine for both Inmarsat and VSAT from the latitude of 73.5 degree North regardless of the bandwidth of the satellite when assuming the deadline for these voice packets was one second. These services can be partially of fully satisfied by Inmarsat or VSAT depends on the bandwidth provided if working below that latitude. For file transfer services, it is possible to guarantee a certain satisfactory ratio at high latitude provided a compensation for bandwidth. The paper1 also provides other numerical results in regarding of link compensation that can be used for new satellite link purpose.
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Khalid, Zubair, and Rodney A. Kennedy. "On the placement of latitudes in iso-latitude optimal-dimensionality sampling schemes on the sphere." In 2014 8th International Conference on Signal Processing and Communication Systems (ICSPCS). IEEE, 2014. http://dx.doi.org/10.1109/icspcs.2014.7021060.

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Jaroslawski, Janusz. "Measurements of surface ozone at Belsk, Poland." In High Latitude Optics, edited by Thormod Henriksen. SPIE, 1993. http://dx.doi.org/10.1117/12.163484.

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Boime, Robert D., and Stephen G. Warren. "Mapping Antarctic ozone from visible-channel data." In High Latitude Optics, edited by Thormod Henriksen. SPIE, 1993. http://dx.doi.org/10.1117/12.163473.

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Erukhimova, T. L., and V. Y. Trakhtengerts. "Ozone variations in the stratosphere due to gravity waves in stratified shear flows." In High Latitude Optics, edited by Thormod Henriksen. SPIE, 1993. http://dx.doi.org/10.1117/12.163468.

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Jaross, Glen, and Arlin J. Krueger. "Ice radiance method for backscatter UV instrument monitoring." In High Latitude Optics, edited by Thormod Henriksen. SPIE, 1993. http://dx.doi.org/10.1117/12.163469.

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Ellingson, Robert G. "Atmospheric radiation measurement (ARM) program: project description and preliminary results." In High Latitude Optics, edited by Knut H. Stamnes. SPIE, 1993. http://dx.doi.org/10.1117/12.163501.

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Komhyr, Walter D. "USA Dobson spectrophotometer total ozone measurements program: 1962-1992." In High Latitude Optics, edited by Thormod Henriksen. SPIE, 1993. http://dx.doi.org/10.1117/12.163466.

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Kasatkina, Elena E. E., Oleg I. Shumilov, Oleg M. Raspopov, Kjell Henriksen, Stanislav Fisher, and James R. Slusser. "Comparison of stratospheric ozone variations in the Arctic and Antarctic during solar proton events." In High Latitude Optics, edited by Thormod Henriksen. SPIE, 1993. http://dx.doi.org/10.1117/12.163467.

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Reports on the topic "Latitudo"

1

Vickrey, James F. High-Latitude Ionospheric Irregularities. Fort Belvoir, VA: Defense Technical Information Center, July 1986. http://dx.doi.org/10.21236/ada172474.

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Douglas, Thomas, Merritt Turetsky, and Charles Koven. Increased rainfall stimulates permafrost thaw across a variety of Interior Alaskan boreal ecosystems. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/41050.

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Earth’s high latitudes are projected to experience warmer and wetter summers in the future but ramifications for soil thermal processes and permafrost thaw are poorly understood. Here we present 2750 end of summer thaw depths representing a range of vegetation characteristics in Interior Alaska measured over a 5-year period. This included the top and third wettest summers in the 91-year record and three summers with precipitation close to mean historical values. Increased rainfall led to deeper thaw across all sites with an increase of 0.7 ± 0.1 cm of thaw per cm of additional rain. Disturbed and wetland sites were the most vulnerable to rain-induced thaw with ~1 cm of surface thaw per additional 1 cm of rain. Permafrost in tussock tundra, mixed forest, and conifer forest was less sensitive to rain-induced thaw. A simple energy budget model yields seasonal thaw values smaller than the linear regression of our measurements but provides a first-order estimate of the role of rain-driven sensible heat fluxes in high-latitude terrestrial permafrost. This study demonstrates substantial permafrost thaw from the projected increasing summer precipitation across most of the Arctic region.
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Reinisch, Bodo W., Klaus Bibl, Claude G. Dozois, Robert R. gamache, and David F. Kitrosser. High Latitude Ionospheric Radio Studies. Fort Belvoir, VA: Defense Technical Information Center, January 1988. http://dx.doi.org/10.21236/ada192270.

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Heelis, R. A. Electrodynamics of the High Latitude Ionosphere. Fort Belvoir, VA: Defense Technical Information Center, November 1988. http://dx.doi.org/10.21236/ada206819.

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Reinisch, Bodo W., Jurgen Buchau, Edward J. Weber, Claude G. Dozois, and Klaus Bibl. High Latitude F-Region Drift Studies. Fort Belvoir, VA: Defense Technical Information Center, December 1986. http://dx.doi.org/10.21236/ada184466.

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Scali, James L. The Mid-Latitude Trough. A Review. Fort Belvoir, VA: Defense Technical Information Center, April 1992. http://dx.doi.org/10.21236/ada258606.

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Wu, Qian. Low Latitude Aeronomy Study in Africa. Fort Belvoir, VA: Defense Technical Information Center, February 2016. http://dx.doi.org/10.21236/ad1004769.

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Heelis, R. A. Electrodynamics of the High Latitude Ionosphere. Fort Belvoir, VA: Defense Technical Information Center, February 1990. http://dx.doi.org/10.21236/ada223229.

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Robinson, Matthew. The Horse Latitudes. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.2368.

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Heelis, R. A. Global Convection Patterns in the High Latitude. Fort Belvoir, VA: Defense Technical Information Center, February 1987. http://dx.doi.org/10.21236/ada185794.

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