Changing structure of the precipitation process during 1960–2005 in Xinjiang, China

Qiang Zhang*, Jianfeng Li, Vijay P. Singh, Chong-Yu Xu, Yungang Bai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Using daily precipitation data spanning 1960–2005 from 51 meteorological stations in Xinjiang province, China, spatial and temporal changes in consecutive maximum wet days in the year, summer, and winter were investigated. Fifteen precipitation extreme indices, which reflect the attributes of consecutive maximum wet days, were defined, and the modified Mann–Kendall test was applied to detect the tendencies, and changes in the indices were evaluated through linear regression with the F test. Results showed that: (1) two consecutive wet days occurred most frequently in the year and summer, and the fractional contributions and precipitation intensities decreased as the duration increased; in winter, one wet day had the maximum possibility, fractional contributions decreased and intensities increased as the duration increased. (2) The possibility of consecutive wet days which had short durations reduced, while those of long durations increased; annual fractional contributions of short durations decreased, while those of long durations increased; summer and winter fractional contribution of all durations decreased first and then increased; the intensities of all durations increased. (3) The wet tendency was identified in Xinjiang; the wet trend in Southern Xinjiang was more significant than Northern Xinjiang in summer, while in winter the wet tendency in Northern Xinjiang was more pronounced.
Original languageEnglish
Pages (from-to)229–244
Number of pages16
JournalTheoretical and Applied Climatology
Volume110
Issue number1-2
Early online date20 Mar 2012
DOIs
Publication statusPublished - Oct 2012

User-Defined Keywords

  • Precipitation Amount
  • Extreme Precipitation
  • Precipitation Intensity
  • Tianshan Mountain
  • Precipitation Station

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