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      氣候變化研究進(jìn)展 ?? 2011, Vol. 7 ?? Issue (2): 116-122.

      ? 氣候系統變化 ? 上一篇    下一篇

      2011—2050年長(cháng)江流域氣候變化預估問(wèn)題的探討

      曾小凡1,周建中1,翟建青2,蘇布達2,熊明3   

      1. 1. 華中科技大學(xué)水電與數字化工程學(xué)院
        2. 中國氣象局國家氣候中心
        3. 長(cháng)江水利委員會(huì )水文局
      • 收稿日期:2010-09-28 修回日期:2010-11-16 出版日期:2011-03-30 發(fā)布日期:2011-04-07
      • 通訊作者: 曾小凡 E-mail:zengxiaofan2009@gmail.com
      • 基金資助:
        973項目;自然科學(xué)基金

      Research on Climate Projection for the Period 2011-2050 in the Yangtze River Basin

      • Received:2010-09-28 Revised:2010-11-16 Online:2011-03-30 Published:2011-04-07
      • Contact: Xiaofan Zeng E-mail:zengxiaofan2009@gmail.com

      摘要: 利用長(cháng)江流域1961—2008年觀(guān)測氣象資料,對IPCC 第四次評估報告中12個(gè)全球氣候模式及所有模式集合平均進(jìn)行比較驗證,結果表明:MIUB_ECHO_G模式對該地區降水模擬能力較強,NCAR_CCSM3模式對溫度模擬效果較好。進(jìn)一步利用MIUB_ECHO_G模式和NCAR_CCSM3模式結果在SRES-A2、-A1B、-B1 3種排放情景下的降水和溫度數據,分析2011—2050年3種排放情景下長(cháng)江流域降水和溫度變化特征。結果表明,2011—2050年長(cháng)江流域降水變化趨勢不明顯,溫度呈增加趨勢,增幅在2℃內。

      關(guān)鍵詞: 氣候模式比較, 氣候預估, 排放情景, 長(cháng)江流域, comparison of GCMs, climate projection, emission scenarios, Yangtze River basin

      Abstract: Simulation abilities of different global climate models (GCMs) are different for a specific region. To select the applicable GCMs to project climate change in the Yangtze River basin, observed climate data from 1961 to 2008 were used to compare the 12 GCMs from IPCC-AR4. The results show that MIUB_ECHO_G model had better simulation ability for precipitation than the rest GCMs, and NCAR_CCSM3 model had better simulation ability for temperature. Based on the projected data by the two models, future annual and seasonal precipitation and temperature anomalies for 2011-2050, relative to the reference period of 1971-2000, under the SRES-A2, -A1B, and -B1 scenarios, were analyzed. Projected precipitation does not show obvious changing trends under the three different scenarios and projected temperature shows continuous increasing trends with an increasing range within 2 ℃.

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