Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

The Temporal and Spatial Distribution of Multiyear Drought Events in Yunnan During the Last half-Century

FAN Xiao-hong;SHEN Cai-ming;REN Bin-bin;LIANG Jia-chang;REN Zhi-guo;Key Laboratory of Plateau Lake Ecology and Global Change,Yunnan Provincial Key Laboratory of Plateau Geography Process and Environmental Changes,College of Tourism and Geographical Science,Yunnan Normal University;Software College,Beijing University of Aeronautics and Astronautics;  
It is important to study the climate trends and patterns of Yunnan in the recent halfcentury for understanding and predicting regional response to global climate warming. Using1960-2012 daily precipitation rainfall data from 29 meteorological stations in Yunnan,we conduct standardized precipitation index(SPI)analysis to reveal change trend of SPI in Yunnan,detect multiyear drought events,and elucidate their evolutions of spatial patterns and possible causes.Analysis results showed that SPI values in Yunnan exhibit an obvious interdecadal oscillations and Yunnan has experienced three multiyear drought events in 1988-1990,2004-2007,and2009-2012.The evolutions of three events are different.1988-1990 and 2009-2012 drought events started from southern Yunnan and central part of eastern Yunnan as their drought center respectively,and then developed to extreme droughts covering most of Yunnan;the spatial modes of 2004-2007 drought event exhibited as dotted patterns.Three multiyear drought events may be related to sustained development of the atmospheric circulation anomalies and associated with some ocean-atmosphere coupling.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved