نتایج جستجو برای: شاخص spei

تعداد نتایج: 75015  

Journal: :Dendrochronologia 2022

European lowland beech stands are under pressure by current climate change and increased drought spells. Climate sensitivity of trees is most commonly studied examining tree-ring width records wood density-based time series, yet the potential latter underexplored for hardwoods (Fagus sylvatica L.) in particular. Here, we investigate how variability radial growth, Maximum Latewood Density (MXD) ...

Journal: :Journal of Hydrology 2021

This paper investigates the impacts of climate change on groundwater droughts making use regional projections and standardized indices: Standardized Precipitation Index (SPI), Evapotranspiration (SPEI) Groundwater (SGI). The method adopted, using historical precipitation temperature data water levels collected in monitoring wells, first possible correlations between meteorological indices at ea...

ژورنال: مرتع 2021

Drought as a complex ecosystem crisis can affect vegetation density and health. Iran with an arid and semi-arid climate is exposed to this phenomenon. Therefore, it is necessary to evaluate the effect of drought on vegetation. The purpose of this study is to evaluate the effect of meteorological drought on vegetation dynamics in Iran. In this regard, using MATLAB software, SPEI index with time ...

Journal: :Journal of Water and Climate Change 2022

Abstract The Haihe River basin is the main grain production base and highland of economic strategic development in China. Based on daily meteorological data during 1960–2020, characteristics drought evolution were analyzed by standardized precipitation evapotranspiration index (SPEI). Pearson correlation method cross-wavelet analysis used to explore between SPEI climate factors (global warming,...

2012
Rosario Morales-Espinosa Gloria Soberón-Chávez Gabriela Delgado-Sapién Luisa Sandner-Miranda José L. Méndez Gerardo González-Valencia Alejandro Cravioto

Various genomic islands, PAPI-1, PAPI-2, PAGI-1, PAGI-2, PAGI-3, and PAGI-4, and the element pKLC102 have been characterized in different P. aeruginosa strains from diverse habitats and geographical locations. Chromosomal DNA macroarray of 100 P. aeruginosa strains isolated from 85 unrelated patients hospitalized in an intensive care unit was created to assess the occurrence of these genomic is...

Journal: :Meteorology and Atmospheric Physics 2022

Abstract One of the negative consequences climate change is also increase in severity, frequency and length droughts appearing Europe. The effects meteorological drought are often substantial, not only for natural environment but humans. Hence, main purpose this research was to determine trends severity occurrence Europe during period 1951–2015 using standardized precipitation index evapotransp...

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