Change Characteristics and C limate Return Periods Calculation ofHeavy Precipitation in the Northeast Side ofQ inghai-TibetPlateau

J4 ›› 2009, Vol. 27 ›› Issue (4): 314-319.

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Change Characteristics and C limate Return Periods Calculation ofHeavy Precipitation in the Northeast Side ofQ inghai-TibetPlateau

HUANG 　Chao^1,2,3, LIU Chi-Guo^2,4, DENG Zhen-Yong³

(1. Institute ofAridMeteorology, CMA, Lanzhou730020, China;2. LinxiaMeteorologicalBureau ofGansu Province, Linxia731100, China;3. Gansu ProvincialMeteorologicalBureau, Lanzhou730020, China;4. Lanzhou CentralMeteorologicalObservaroty, Lanzhou730020, China)

Received:2009-09-14 Revised:2009-10-15 Online:2010-12-30 Published:2009-12-30

青藏高原东北侧强降水变化特征及其气候重现期计算

黄　涛^{１，２，３}，刘治国^２，４，邓振镛^３

(1.中国气象局兰州干旱气象研究所,甘肃　兰州　730020; 2.甘肃临夏回族自治州气象局,甘肃　临夏　731100;3.甘肃省气象局,甘肃　兰州　730020; 4.兰州中心气象台,甘肃　兰州　730020)

作者简介:黄涛（１９８１－），男，河北邯郸人，助工，主要从事生态与环境气象研究．Ｅ－ｍａｉｌ：ｈｕｎｔｅｒｉａ＠１６３．ｃｏｍ
基金资助:
国家自然基金“中国西部地区秋季降水机制研究”（４０６７５０６６）资助

Abstract

Abstract:

The heavy precipitationwas analyzed based on the data from 1943 to 2008 in 6 representativemeteorological stations in Linxiawhich is located in the northeast side ofQinghai-TibetPlateau. At first, the spatial and temporaldistribution ofheavy precipitation in this region was analyzed, and then, the return periods ofheavy precipitationwas assessed by Pearson-III dis ributionmethod. Results show that the days ofheavy precipitation increased conspicuously since the 1980s. The return periodwas calculated abouta heavy precipitation event in this region occurred on August20, 2008, and the result accorded with the artificial-assessment.

Key words: northeastern side ofQinghai-TibetPlateau, climate change, heavy precipitation, return perio

摘要：

选取青藏高原东北侧临夏回族自治州的6个代表气象站点自建站以来的强降水(日降水量≥25. 0 mm)资料,对该地区强降水的时空分布及气候变化特征进行了分析;利用Pearson-III概率分布方法对强降水异常气候重现期进行了计算。结果显示,自20世纪80年代以来,该区域强降水日数呈显著增多趋势;对2008年8月20日一次强降水过程进行的重现期计算显示,与人工估算结果相符。

关键词: 青藏高原东北侧, 气候变化, 强降水, 重现期

CLC Number:

: P468. 0⁺24

HUANG 　Chao, LIU Chi-Guo, DENG Zhen-Yong. Change Characteristics and C limate Return Periods Calculation ofHeavy Precipitation in the Northeast Side ofQ inghai-TibetPlateau[J]. J4, 2009, 27(4): 314-319.

黄　涛, 刘治国, 邓振镛. 青藏高原东北侧强降水变化特征及其气候重现期计算[J]. J4, 2009, 27(4): 314-319.

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Change Characteristics and C limate Return Periods Calculation ofHeavy Precipitation in the Northeast Side ofQ inghai-TibetPlateau

青藏高原东北侧强降水变化特征及其气候重现期计算

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