Shifting of Meteorological to Hydrological Drought Risk at Regional Scale

被引:14
作者
Sarwar, Awais Naeem [1 ]
Waseem, Muhammad [1 ]
Azam, Muhammad [2 ]
Abbas, Adnan [3 ]
Ahmad, Ijaz [1 ]
Lee, Jae Eun [4 ]
ul Haq, Faraz [1 ]
机构
[1] Univ Engn & Technol, Ctr Excellence Water Resources Engn, GT Rd, Lahore 54890, Pakistan
[2] PMAS Arid Agr Univ, Fac Agr Engn & Technol, Rawalpindi 46000, Pakistan
[3] Nanjing Univ Informat Sci & Technol, Land Sci Res Ctr, Nanjing 210044, Peoples R China
[4] Chungbuk Natl Univ, Natl Crisison Inst, Cheongju 28644, South Korea
来源
APPLIED SCIENCES-BASEL | 2022年 / 12卷 / 11期
基金
新加坡国家研究基金会;
关键词
drought SDI; SPI; linkage; propagation; CLIMATE-CHANGE; RIVER-BASIN; STREAMFLOW; PRECIPITATION; PROPAGATION; VARIABILITY; PAKISTAN; IMPACTS; LINK;
D O I
10.3390/app12115560
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The drought along with climate variation has become a serious issue for human society and the ecosystem in the arid region like the Soan basin (the main source of water resources for the capital of Pakistan and the Pothohar arid region). The increasing concerns about drought in the study area have brought about the necessity of spatiotemporal analysis and assessment of the linkage between different drought types for an early warning system. Hence, the streamflow drought index (SDI) and standard precipitation index (SPI) were used for the analysis of the spatiotemporal variations in hydrological and meteorological drought, respectively. Furthermore, statistical approaches, including regression analysis, trend analysis using Mann Kendall, and moving average, have been used for investigation of the linkage between these drought types, the significance of the variations, and lag time identification, respectively. The overall analysis indicated an increase in the frequency of both hydrological and meteorological droughts during the last three decades. Moreover, a strong linkage between hydrological and meteorological droughts was found; and this relationship varied on the spatiotemporal scale. Significant variations between hydrological and meteorological droughts also resulted during the past three (3) decades. These discrepancies would be because of different onset and termination times and specific anthropogenic activities in the selected basin for the minimization of hydrological drought. Conclusively, the present study contributes to comprehending the linkage between hydrological and meteorological droughts and, thus, could have a practical use for local water resource management practices at the basin scale.
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页数:14
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