نتایج جستجو برای: climatic variations

تعداد نتایج: 216876  

2003
PHILIP W. MOTE EDWARD A. PARSON ALAN F. HAMLET WILLIAM S. KEETON DENNIS LETTENMAIER NATHAN MANTUA EDWARD L. MILES DAVID W. PETERSON DAVID L. PETERSON RICHARD SLAUGHTER AMY K. SNOVER

The impacts of year-to-year and decade-to-decade climatic variations on some of the Pacific Northwest’s key natural resources can be quantified to estimate sensitivity to regional climatic changes expected as part of anthropogenic global climatic change. Warmer, drier years, often associated with El Niño events and/or the warm phase of the Pacific Decadal Oscillation, tend to be associated with...

Dingrong Wu Enli Wang Huib Hengsdijk Qiang Yu,

Summer maize (Zea mays L.) is one of the dominant crops in the North China Plain (NCP). Its growth is greatly influenced by the spatial-temporal variation of climatic variables, especially solar radiation, temperature and rainfall. The WOFOST (version 7.1) model was applied to evaluate the impact of climatic variability on summer maize yields using historical meteorological data from 1961 to 20...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2016
Christopher I Roos Andrew C Scott Claire M Belcher William G Chaloner Jonathan Aylen Rebecca Bliege Bird Michael R Coughlan Bart R Johnson Fay H Johnston Julia McMorrow Toddi Steelman

Living with fire is a challenge for human communities because they are influenced by socio-economic, political, ecological and climatic processes at various spatial and temporal scales. Over the course of 2 days, the authors discussed how communities could live with fire challenges at local, national and transnational scales. Exploiting our diverse, international and interdisciplinary expertise...

2015
Antarpreet Jutla Haidar Aldaach Hannah Billian Ali Akanda Anwar Huq Rita Colwell Guy J-P. Schumann

INTRODUCTION Cholera, an infectious diarrheal disease, has been shown to be associated with large scale hydroclimatic processes. The sudden and sporadic occurrence of epidemic cholera is linked with high mortality rates, in part, due to uncertainty in timing and location of outbreaks. Improved understanding of the relationship between pathogenic abundance and climatic processes allows predictio...

Journal: :Science 1976
J D Hays J Imbrie N J Shackleton

1) Three indices of global climate have been monitored in the record of the past 450,000 years in Southern Hemisphere ocean-floor sediments. 2) Over the frequency range 10(-4) to 10(-5) cycle per year, climatic variance of these records is concentrated in three discrete spectral peaks at periods of 23,000, 42,000, and approximately 100,000 years. These peaks correspond to the dominant periods o...

2011
E. V. Bezrukova N. V. Kulagina

Pollen and AMSC analyses of bottom sediments from the upper nine meters of the Lake Kotokel’ section were carried out. The regional climate and landscape dynamics during the Late Glacial and Holocene has been reconstructed with an average time resolution of ~120 years. It is shown that the climatic conditions in the Kotokel’ basin during Termination I (~15.5–11 ka) were characterized by short d...

Journal: :Tree physiology 2013
Tamir Klein Giovanni Di Matteo Eyal Rotenberg Shabtai Cohen Dan Yakir

The rate of migration and in situ genetic variation in forest trees may not be sufficient to compete with the current rapid rate of climate change. Ecophysiological adjustments of key traits, however, could complement these processes and allow sustained survival and growth across a wide range of climatic conditions. This was tested in Pinus halepensis Miller by examining seven physiological and...

ژورنال: طب جنوب 2019
Karampour , Mostafa, Shamsipour , Ali Akbar, Yarahmadi , Daruish, Zarei Cheghabalaki , Zahra,

Background Cutaneous Leishmaniasis (CL) is an important infection with a high incidence rate. The spatiotemporal dynamics of this disease is mainly determined by three main components of parasite, reservoir and vector. Climatic factors can significantly affect its incidence through their impact on these components. Materials and Methods: The present study aimed to assess the effects of climat...

N Hemadi N Zohrabi, R Moghadasi

In this study a research, there was conducted on the change regarding the climatic parameters oftemperature and rainfall along with their sequential quantitative changes in the province Khouzestan.Then the economic effect on water use and the net income of wheat, was assessed by applyingRicardian method. The results of the statistical analysis using Mann-Kendall test proved the existenceof the ...

2016
Yunyun Li Jianxia Chang Yimin Wang Wenting Jin Aijun Guo Hongyan Li

Previous studies that quantified variations in runoff have mainly focused on the combined impacts of climate and human activities or climate and land cover change. Few have separated land cover change from human activities, which is critical for effective management of water resources. This study aims to investigate the impact of changing environmental conditions on runoff using the Soil and Wa...

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