نتایج جستجو برای: quantitative measurement of meteorological drought
تعداد نتایج: 21206933 فیلتر نتایج به سال:
From winter 2009 to spring 2010, due to decreasing precipitation and high temperature, Southwest China experienced the worst meteorological drought in 60 years. The drought has impacted large areas of Guizhou, Yunnan, Guangxi and Sichuan provinces. In this paper, climate data (precipitation and temperature) and SPOT VGT Normalized Difference Vegetation Index (NDVI) data were combined with land ...
In recent years due to increase of drought frequency, lakes water levels, in arid and semi-arid regions of the Iran, have dropped significantly. Therefore, in addition to ecosystem degradations, drought challenges socio-economic sectors as well. The purpose of this study was to evaluate the water level fluctuations of Parishan Lake during the wet and dry periods, and the impact of drought indic...
A practical approach was developed in the study for drought monitoring in Guangdong province of China on the basis of vegetation supply water index (VSWI) and precipitation distance index (PDI). A comprehensive index for assessment of agro-drought severity (SADI) was then established from the normalized VSWI and PDI. Using MODIS satellite images and precipitation data from ground-observed meteo...
abstract in order to study the effects of quantitative and qualitative traits on cooking characteristics and protein percentage of 15 red bean genotypes, a randomized complete block design was conducted with three replications in normal irrigation and drought stress. these traits were measured in farm and nutrition laboratory employing international standard of ciat. analyses of variance showed...
introduction quantitative susceptibility mapping (qsm) is a new contrast mechanism in magnetic resonance imaging (mri). the images produced by the qsm enable researchers and clinicians to easily localize specific structures of the brain, such as deep brain nuclei. these nuclei are targets in many clinical applications and therefore their easy localization is a must. in this study, we aimed to i...
Weather and climate events and agronomic enterprise are coupled via crop phenology and yield, which is temperature and precipitation dependent. Additional coupling between weather and climate and agronomic enterprise occurs through agricultural practices such as tillage, irrigation, erosion, livestock management, and forage. Thus, the relationship between precipitation, temperature, and yield i...
abstract precipitation is an important variable which is used in definition of drought. based on precipitation amounts, some indices are devised for drought monitoring including, the standardized precipitation index (spi) and the standard index of annual precipitation (siap). each of these drought indices are classified into some classes so that each class descripts a given severity of drought....
Drought assessment is crucial for effective water resources management in a river basin. frequency has increased worldwide recent years due to global warming. In this paper, an attempt made assess the meteorological drought Punpun basin, India using two globally accepted indices namely, Standardized Precipitation Index (SPI) and Evapotranspiration (SPEI). The SPI SPEI at 1-, 3-, 6-, 9-, 12-mont...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید