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      氣候變化研究進(jìn)展 ?? 2007, Vol. 03 ?? Issue (01): 36-040.

      ? 研究短論 ? 上一篇    下一篇

      青海南部冬季積雪和雪災(zāi)變化的特征

      時(shí)興合 李生辰 李棟梁 唐紅玉 馬占良 蘇忠誠   

      1. 青海省氣象臺 青海省氣象局氣候中心
      • 收稿日期:2006-03-13 修回日期:2006-12-31 出版日期:2007-01-30 發(fā)布日期:2007-01-30
      • 通訊作者: 時(shí)興合

      Changes in Snow Covers and Snow Disasters in Winter in the South of Qinghai Province

        

      • Received:2006-03-13 Revised:2006-12-31 Online:2007-01-30 Published:2007-01-30

      摘要: 利用1961-2005年青海南部牧區(qū)氣象臺站觀測的氣溫、降水、積雪資料,用氣候診斷方法分析了該地區(qū)積雪等氣候要素的年代際演變特征以及雪災(zāi)變化的成因。結(jié)果表明:20世紀(jì)60-90年代冬季青海南部牧區(qū)中雪和大雪出現(xiàn)的站次以及雪災(zāi)出現(xiàn)的站次有逐步增多的趨勢,降雪量和地表平均積雪量每10 a分別增加1. 253 mm和8.246 cm,單站積雪量在海拔4100 m左右的高度上增加比較明顯,其變化是由氣候的年代際波動(dòng)引起的。

      關(guān)鍵詞: 積雪, 雪災(zāi), 氣候變化, 青海南部

      Abstract: Based on the data of air temperature, rainfall, and snow cover observed by meteorological stations in the pasturing area in the south of Qinghai Province from 1961 to 2005 and using the climate diagnosis method, the evolutional characteristics of climate elements and the cause of change of snow disasters are analyzed. The results indicate that the station-times for occurrences of moderate snow, heavy snow and snow disasters showed a gradually increasing tendency in the pasturing area in the south of Qinghai from the 1960s to 1990s, and the snowfall and mean surface snow cover climatologically increased by 1.253 mm/10a and 8.246 cm/10a, respectively. The snow cover of single-stations about 4100 m altitudes increased significantly. And such a change is closely related to the decadal oscillations of climate.

      Key words: snow cover, snow disasters, climate change, the south of Qinghai Province

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