Arid
DOI10.1016/j.jhydrol.2021.126174
Discrepancy precipitation index for monitoring meteorological drought
Tayfur, Gokmen
通讯作者Tayfur, G (corresponding author), Izmir Inst Technol, Dept Civil Engn, TR-35430 Izmir, Turkey.
来源期刊JOURNAL OF HYDROLOGY
ISSN0022-1694
EISSN1879-2707
出版年2021
卷号597
英文摘要Widely employed precipitation drought indices, one way or another, impose probability distribution functions to the data when performing the drought analysis. This may be a plausible approach when the data do not have strong discrepancy which can impede the distribution. The precipitation data in semi-arid and especially in arid regions do have a strong discrepancy due to the sporadic rainfall occurring in such regions. Therefore, in the analysis of the drought for such regions, imposing any probability distribution function to the data could be futile. This study hence developed a new drought index called the Discrepancy Precipitation Index (DPI) for assessing and monitoring the meteorological drought. The method does not impose any probability distribution on the precipitation data. The method is based on the discrepancy of the data with respect to the mean value. The drought classifications are proposed based on the D-score values. Its drought classification ranges are straightforward as those of the Standard Precipitation Index (SPI). The method is applied to assess the meteorological drought at several stations located at different climatic regions such as the arid climate (Mauritania), semi-arid climate (Afghanistan) and the Mediterranean climate (Turkey). The results reveal that the DPI is more representative drought assessment tool for the arid climate regions. At semi-arid climate regions, the DPI can be an alternative drought index to the widely employed (the log-SPI and/or the gamma-SPI) indices. For the Mediterranean climate regions, the DPI can be used together with the other indices. The Discrepancy Measure (DM) is introduced to assess the strength of the discrepancy of the precipitation data series. As the DM of a precipitation series increases, the DPI captures more historical droughts.
英文关键词Drought Discrepancy precipitation index D-score Discrepancy measure Arid climate Semi-arid region Mediterranean climate Log-SPI Gamma-SPI
类型Article
语种英语
收录类别SCI-E
WOS记录号WOS:000652835600056
WOS关键词SEVERITY ; BASIN
WOS类目Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向Engineering ; Geology ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/350894
作者单位[Tayfur, Gokmen] Izmir Inst Technol, Dept Civil Engn, TR-35430 Izmir, Turkey
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Tayfur, Gokmen. Discrepancy precipitation index for monitoring meteorological drought[J],2021,597.
APA Tayfur, Gokmen.(2021).Discrepancy precipitation index for monitoring meteorological drought.JOURNAL OF HYDROLOGY,597.
MLA Tayfur, Gokmen."Discrepancy precipitation index for monitoring meteorological drought".JOURNAL OF HYDROLOGY 597(2021).
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