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《科学通报(英文版)》 2003-03
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Annual precipitation fields secular variation over global land areas for 1948—2000

SHI Neng & CHEN Luweng Department of Atmospheric Sciences, Nanjing Institute of Meteorology, Nanjing 210044, China  
The secular variation over the global land an-nual precipitation (GLAP) fields for 1948—2000 is investi-gated. Evidence suggests that the GLAP abruptly reduced around 1978 and experienced a decrease of 0.54 mm/a, on average. Fuzzy clustering is used to group the annual pre-cipitation over commonly-used 36 latitudes belts into six belts for examining its secular variation. The results show that, except northern high-latitudes (60°—90°N) where it is slightly increased, the precipitation is decreased, especially in 35°N—35°S, and the diminution is the maximum of 0.98 mm/a at tropics. Moreover, identification of 1948—2000 flood/drought years on a global basis is made, showing no-ticeable interdecadal variations. During the years of warm (cold) events the precipitation decreases (increases) by 15.4 mm (14.4 mm) per year, on average. It can be assumed that global warming and frequent ENSO occurrences from the end of the 1970s maybe serve as the root cause of the dimi-nution.
【CateGory Index】: P468
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【Co-references】
Chinese Journal Full-text Database 2 Hits
1 Gao Xuejie, Zhao Zongci and Ding Yihui, National Climate Center, Beijing 100081 Huang Ronghui Institute of Atmospheric Science, Chinese Academy of Sciences, Beijing 100080 Filippo Giorgi The Abdus Salam International Center for Theoretical Physics, Tries;Climate Change due to Greenhouse Effects in China as Simulated by a Regional Climate Model[J];大气科学进展(英文版);2001-06
2 SHI Peng, RUI Xiao-fang(Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China);Comparison and improvement of spatial rainfall interpolation methods[J];Journal of Hehai University (Natural Sciences );2005-04
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