DOI: 10.1007/s00382-013-1987-2
Scopus记录号: 2-s2.0-84906086397
论文题名: The day-to-day monitoring of the 2011 severe drought in China
作者: Lu E. ; Cai W. ; Jiang Z. ; Zhang Q. ; Zhang C. ; Higgins R.W. ; Halpert M.S.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 43, 期: 2017-01-02 起始页码: 1
结束页码: 9
语种: 英语
英文关键词: At daily scale
; Day-to-day monitoring
; Drought monitoring
; Short timescale
; The WAP index
英文摘要: Dry/wet condition has a large interannual variability. Decision-makers need to know the onset, duration, and intensity of drought, and require droughts be monitored at a daily to weekly scale. However, previous tools cannot monitor drought well at this short timescale. The Palmer Drought Severity Index has been found dissatisfactory in monitoring because of its complexity and numerous limitations. The Standardized Precipitation Index (SPI) always asks for a timescale, and precipitation is averaged over the period of the scale. Because of this, the SPI cannot be used for short scales, e.g., several days, and what it tells is the overall drought situation of the period. The weighted average of precipitation (WAP) developed by Lu (Geophys Res Lett 36:L12707, 2009) overcomes the deficiency of the SPI; it does not require a timescale, and can provide the drought (and flood) extent of each day. Therefore, the WAP can monitor drought at scales from daily to weekly, monthly, and any longer scale, and is really "flexible and versatile for all timescales". In this study, the standardized WAP (SWAP) is used to monitor the 2011 drought over China. Drought swept the country during the year from north to south and from east to west. In spring, a once-in-a-fifty-year drought occurred over the Yangtze River basin and the southern region, causing serious shortage of drinking water for people and livestock, as well as tremendous losses in agriculture and the shipping industry. Results show that the SWAP, with its monthly mean plots, can well reproduce the seasonal shift of the 2011 drought across the country. The animation of daily plots demonstrates that the SWAP would have been able to monitor the day-to-day variation of the spring drought around the Yangtze River basin. It can provide the details of the drought, such as when the drought emerged over the region, how long it maintained there (though drought area may move back and forth with extension and contraction of the area), and when the drought relieved over the basin. © 2013 Springer-Verlag Berlin Heidelberg. 资助项目: NOAA, National Natural Science Foundation of China
; NSFC, National Natural Science Foundation of China
; NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54591
Appears in Collections: 过去全球变化的重建
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作者单位: Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China; NOAA Climate Prediction Center, College Park, MD, United States; National Climate Center, Beijing, China
Recommended Citation:
Lu E.,Cai W.,Jiang Z.,et al. The day-to-day monitoring of the 2011 severe drought in China[J]. Climate Dynamics,2014-01-01,43(2017-01-02)