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The variation and regional differences of precipitation in the Longitudinal Range-Gorge the Region

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Chinese Science Bulletin

Abstract

This paper examines the regional differences of precipitation in the Longitudinal Range-Gorge Region (LRGR) based on the daily rainfall records during 1960 to 2001 observed at 36 meteorological stations. The regional differences of precipitation in different spatial and temporal scale are analyzed, under the effecting of the special “corridor-barrier” function in LRGR. The results indicate that very close linkages exist between the regional differences and the “corridor-barrier” function: in most areas of the northern LRGR (>26°N), the general features of intra-annual precipitation pattern (IPP) exhibit “multi-peak pattern” with “peach blossom flood period” (PBFP). When latitude is close to 26°N, the PBFP disappears gradually and IPP patterns change from “multi-peak pattern” to “single-peak pattern”. From 24°N to 25°N, the “single-peak pattern” appears again; in the southern LRGR, the pattern shows quasi “double-peak pattern” with the characteristic of so-called “autumn rain period”, and the larger the longitude is, the more significant the pattern will be. In dry season, the annual variations of precipitation vary similarly because the controlling of atmospheric circulation is relatively single in the LRGR and the influence of the “barrier” function is not significant on precipitation annual variation, but in wet season, the spatial distribution of precipitation annual variations becomes more complicated.

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Authors and Affiliations

  1. Asia International Rivers Center, Yunnan University, Kunming, 650091, China

    He DaMing & Li Shaojuan

  2. Xishuangbanna Tropical Botanic Garden, Chinese Academy of Sciences, Kunming, 650223, China

    Zhang YiPing

Authors
  1. He DaMing
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  2. Li Shaojuan
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  3. Zhang YiPing
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Corresponding author

Correspondence to He DaMing.

Additional information

Supported by the National Key Project for Basic Research of China (973 Project) (Grant No. 2003CB415105)

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He, D., Li, S. & Zhang, Y. The variation and regional differences of precipitation in the Longitudinal Range-Gorge the Region. Chin. Sci. Bull. 52 (Suppl 2), 59–73 (2007). https://doi.org/10.1007/s11434-007-7007-3

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  • DOI: https://doi.org/10.1007/s11434-007-7007-3

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