نتایج جستجو برای: quantitative measurement of meteorological drought

تعداد نتایج: 21206933  

2009
Ramesh Chand S S Raju

The deficiency and uneven distribution of rainfall during the 2009 monsoon has brought several issues to the fore: rising water demand from various sectors, regional effects of a drought and the failure of the India Meteorological Department to provide credible forecasts at the disaggregate level. A multi-pronged strategy to permanently deal with monsoon deficiency requires exploring newer drou...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم انسانی 1391

the present study sought to investigate the impact of using mind-mapping technique instruction on female elementary efl learners reading comprehension; it also investigated their attitudes towards using mind-mapping technique as a tool to improve their reading comprehension. this study followed a quasi-experimental design with two intact groups as experimental, and control groups. the participa...

2016
Hao Guo Xingming Zhang Fang Lian Yuan Gao Degen Lin

Agriculture is a sector easily affected by meteorological conditions. Crop yield reduction, even regional conflicts, may occur during a drought. It is extremely important to improve the state of our knowledge on agricultural drought risk. This study has proposed a new method (vulnerability surfaces) for assessing vulnerability quantitatively and continuously by including the environmental varia...

Journal: :Biochemical and biophysical research communications 2014
Hui Fang Xia Liu Greg Thorn Jun Duan Lining Tian

Histone acetylation is one of the vital reversible modifications of chromatin structure that regulates gene expression in eukaryotes. Histone acetyltransferases (HATs) and histone deacetylases (HDACs) maintain the homeostasis of histone acetylation. Studies in Arabidopsis have revealed that HATs are involved in plant responses to various stresses including light, temperature, salt and ABA. Drou...

2015
Emily Black Elena Tarnavsky Ross Maidment Helen Greatrex Agrotosh Mookerjee Tristan Quaife Jennifer Price

Lack of access to insurance exacerbates the impact of climate variability on smallholder famers in Africa. Unlike traditional insurance, which compensates proven agricultural losses, weather index insurance (WII) pays out in the event that a weather index is breached. In principle, WII could be provided to farmers throughout Africa. There are two data-related hurdles to this. First, most farmer...

Journal: :Journal of Water Resource and Protection 2023

Meteorological droughts occur when there is deficiency in rainfall; i.e. rainfall availability below some acclaimed normal values. Hence, the greater challenge to be able obtain suitable methods for assessing drought occurrence, its onset or initiation and termination. Thus, an attempt was made this paper evaluate performance of Standardised Precipitation Index (SPI) Anomaly (SPAI) characterise...

Journal: :جغرافیا و مخاطرات محیطی 0
محمود خسروی اکبر زهرایی حسین حیدری سارا بنی نعیمه

introduction drought is a climatic hazard that occurs in the vast areas throughout the world. it causes physical suffering, economic losses, and environmental instability. drought is a slowly developing very which is phenomenon, and it is very difficult to determine when a dry spell becomes a drought or when a severe drought becomes an exceptional drought. it is usually starting with less drama...

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