Arid
DOI10.1007/s11069-018-3247-6
Relationship of drought frequency and severity with range of annual temperature variation
Amrit, Kumar1; Pandey, Rajendra P.2; Mishra, Surendra K.1; Daradur, Mihail3
通讯作者Amrit, Kumar
来源期刊NATURAL HAZARDS
ISSN0921-030X
EISSN1573-0840
出版年2018
卷号92期号:2页码:1199-1210
英文摘要

The frequency and severity of occurrence of meteorological droughts in different climatic regions depend on regional climatic factors. This study has made an effort to explore the relationship of range of annual temperature variation at a given place with the frequency of occurrence of drought and the maximum magnitude of seasonal rainfall deficit (i.e., severity). The seasonal rainfall refers to sum of monsoon season (rainy season) rainfall in India. The monthly precipitation data of 113 years (1901-2013) for 256 stations in different parts of India have been used to estimate the return period of meteorological drought at different stations. The daily normal values of observed maximum and minimum temperatures from 40 years of records have been utilized to estimate range of temperature variation (theta (R)) during the year at each stations. In various parts of India, the theta (R) ranges from 10 A degrees C in humid regions to 40 A degrees C in arid regions. The various climatic regions have been experiencing maximum deficiency of annual rainfall ranging from 30% (humid) to 90% (arid). The results reveal that places exhibiting theta (R) values between 40 to 30 A degrees C face more frequent droughts with average frequency of once in 3 to once in 6 years. The occurrence of extreme and severe drought events is more frequent in the regions with higher values of theta (R) compare to that in lesser values of theta (R). The regions with theta (R) values between 30 to 25 A degrees C mostly face severe and moderate events having the average drought return period of 6-9 years, and the occurrence of extreme droughts in these regions is rare. Furthermore, regions with theta (R) < 20 A degrees C face moderate droughts only with an average return period of 14 years. This study divulges that the average return period and magnitude of deficiency of drought events have notable relationship with the range of temperature variation during the year at a given place.


英文关键词Drought frequency Drought severity Annual temperature variation Percent normal
类型Article
语种英语
国家India ; Moldova
收录类别SCI-E
WOS记录号WOS:000432329700030
WOS关键词LOESS PLATEAU ; CHINA ; INDEXES ; EVENTS
WOS类目Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS研究方向Geology ; Meteorology & Atmospheric Sciences ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/211761
作者单位1.Indian Inst Technol Roorkee, Dept Water Resources Dev & Management, Roorkee 247667, Uttar Pradesh, India;
2.Natl Inst Hydrol, Roorkee 247667, Uttar Pradesh, India;
3.Res & Project Ctr Ecologist, Kishinev, Moldova
推荐引用方式
GB/T 7714
Amrit, Kumar,Pandey, Rajendra P.,Mishra, Surendra K.,et al. Relationship of drought frequency and severity with range of annual temperature variation[J],2018,92(2):1199-1210.
APA Amrit, Kumar,Pandey, Rajendra P.,Mishra, Surendra K.,&Daradur, Mihail.(2018).Relationship of drought frequency and severity with range of annual temperature variation.NATURAL HAZARDS,92(2),1199-1210.
MLA Amrit, Kumar,et al."Relationship of drought frequency and severity with range of annual temperature variation".NATURAL HAZARDS 92.2(2018):1199-1210.
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