Trends in extreme daily precipitation indices in India

International Journal of Climatology - Tập 24 Số 4 - Trang 457-466 - 2004
Shouraseni Sen Roy1, Robert C. Balling1
1Department of Geography, Arizona State University, Tempe, AZ, USA

Tóm tắt

AbstractWe assembled daily precipitation records, initially for 3838 stations, throughout India and ultimately identified 129 stations with reasonably complete records over the period 1910 to 2000. From these daily records, we generated annual time series of seven different indices of extreme precipitation events, including total precipitation, largest 1, 5, and 30 day totals, and the number of daily events above the amount that marks the 90th, 95th, and 97.5th percentiles of all precipitation at each station. Of the 903 different time series (seven variables for 129 stations), 114 had a significant upward trend and 61 had a significant downward trend; overall, 61% of the time series showed an upward trend. The standard regression coefficients showing the strength and sign of the trend were highly correlated across the network. They generally showed increasing values in a contiguous region extending from the northwestern Himalayas in Kashmir through most of the Deccan Plateau in the south and decreasing values in the eastern part of the Gangetic Plain and parts of Uttaranchal. Our results are in general agreement with the prediction from numerical models for an increase in extreme precipitation events in India given the ongoing build‐up of greenhouse gases. Copyright © 2004 Royal Meteorological Society

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Tài liệu tham khảo

Alpert P, 2002, The paradoxical increase of Mediterranean extreme daily rainfall in spite of decrease in total values, Geophysical Research Letters, 29, 10.1029/2001GL0, 10.1029/2001GL013554

10.1002/joc.3370150804

10.1016/S0169-8095(00)00096-X

10.1002/joc.613

10.1002/joc.660

10.2307/1931034

10.1002/hyp.1061

10.1002/qj.49712757316

10.1175/1520-0477(2000)081<0417:OVATIE>2.3.CO;2

10.1023/A:1023630924100

10.1002/joc.923

10.1175/1520-0477(2001)082<0219:HPAHSI>2.3.CO;2

10.1002/1097-0088(20001115)20:13<1533::AID-JOC586>3.0.CO;2-J

Houghton JT, 2001, Climate Change 2001: The Scientific Basis

10.1256/qj.02.97

10.1029/1999RG900002

10.1023/A:1005436904097

10.1038/377217a0

10.1175/1520-0442(2000)013<3760:CITEIA>2.0.CO;2

10.1023/A:1023694115864

10.1002/joc.610

10.1175/1520-0477(1997)078<1069:APICOW>2.0.CO;2

10.1029/2001GL013808

10.1175/1520-0477(2000)081<0427:TIEWAC>2.3.CO;2

10.1002/(SICI)1097-0088(20000330)20:4<347::AID-JOC475>3.0.CO;2-C

10.1002/(SICI)1097-0088(199809)18:11<1169::AID-JOC309>3.0.CO;2-U

10.1007/BF00867053

10.1002/joc.694

Sinha Ray KC, 2003, Climate change in India as evidenced from instrumental records, Bulletin of the World Meteorological Organization, 52, 53

Soman MK, 1988, Decreasing trend in the rainfall of Kerala, Current Science, 57, 5

10.1175/1520-0477(1997)078<2771:TDOENO>2.0.CO;2

10.1029/2002JD002928

10.1029/2001GL013048

10.1175/1520-0442(2001)014<1765:SCITFO>2.0.CO;2

10.1175/1520-0442(2001)014<1923:SATCOH>2.0.CO;2

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International Journal of Climatology

Tập 24 Số 4

457-466

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