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      氣候變化研究進(jìn)展 ?? 2007, Vol. 03 ?? Issue (01): 26-030.

      ? 研究短論 ? 上一篇    下一篇

      1956-2005年中國暖冬和冬季溫度變化

      王凌 張強(qiáng) 陳峪 龔道溢   

      1. 國家氣候中心氣候影響評(píng)估室 北京師范大學(xué)資源學(xué)院
      • 收稿日期:2006-06-26 修回日期:2006-07-28 出版日期:2007-01-30 發(fā)布日期:2007-01-30
      • 通訊作者: 王凌

      Changes of Warmer Winter and Winter Temperature over China in the Past 50 Years

        

      • Received:2006-06-26 Revised:2006-07-28 Online:2007-01-30 Published:2007-01-30

      摘要: 利用全國565個(gè)臺(tái)站1956-2005年冬季平均溫度資料,將多年溫度變化劃分為偏暖、偏冷和正常三類等概率氣候事件,由此給出了一個(gè)新的暖冬指數(shù)和暖冬的定義。結(jié)果表明:暖冬指數(shù)與中國冬季溫度的變暖趨勢相一致,并表現(xiàn)出顯著的年代際變化特征,其變率分別為10%/10 a和0.4℃/10 a。近50 a暖冬事件共計(jì)發(fā)生13次,其中近85%的暖冬發(fā)生在1986年以后。受年際尺度變化的影響,2004/2005年和2005/2006年暖冬主要發(fā)生在青藏高原和華南南部,而東北、內(nèi)蒙古及中部大部分地區(qū)為冷冬或正常。

      關(guān)鍵詞: 暖冬指數(shù), 冬季溫度, 年代際變化

      Abstract: A reasonable warmer winter index (IWWI) in the framework of the three equiprobability categories (i.e. warmer, normal and colder categories) is proposed based on the winter temperature data observed at 565 stations in China during 1956-2005, where the IWWI is defined as the ratio of the station number of warmer category over the total number of stations. The results suggest that the trend of IWWI was consistent with that of the winter temperature on decadal time scale, and their rates of change were 10%/10a and 0.4℃/10a, respectively. It is found that only 13 warmer winter events in total were detected by IWWI over the past 50 years, and 85% of them occurred after 1986.

      Key words: warmer winter index, winter temperature, interdecadal variation

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