中國地區近10年地表反照率變化趨勢
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氣象行業專項GYHY200906020、國家重點基礎研究計劃973項目(200607CB403707)資助


Trend of Surface Albedo Changes in China in Last Decade
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    摘要:

    利用EOSMODIS衛星的地表反照率數據(MCD43C3的L3等級)和一元線性回歸法分析了2000年3月至2009年2月中國區域地表反照率的分布特征及年際、季節變化趨勢。結果表明:中國區域地表反照率分布西高東低,隨海拔和緯度分布;中國大部分地區近10年的年平均地表反照率有增長趨勢,東南部的增長范圍最廣,高海拔和高緯度地區以增長為主;河套地區以及松遼平原的地表反照率減小最快。四季變化中,冬季有明顯變化趨勢的范圍最廣;中國地區東南部四季都有明顯的增長趨勢(00005/年~0001/年),河套地區除冬季外都有明顯的減小趨勢;秋冬兩季,青藏高原有明顯變化趨勢的范圍最廣,高原西部腹地有減小趨勢,四周山脈冰川有增長趨勢。

    Abstract:

    EOSMODIS satellite data on surface albedo (MCD43C3 on Level3) are used to analyze the regional distribution of surface albedo features in China, as well as the interannual and quarterly trends from March 2000 to February 2009. The results show that the regional surface albedo in China was high in the west and low in the east, and varied with altitude and latitude; for nearly 10 years in most areas of China, the annual mean surface albedo had an increase trend, with the southeastern China being most extensive and highaltitude and high latitude regions being growthoriented; in the Hetao region and Songliao Plain, the surface albedo decreased most quickly. As for seasonal change, there was the most extensive area with variation trends in winter. There were sharply increase trends (00005 to 0001 per year) in the southeastern China in four seasons, and significantly decreasing trends in Hetao, except in winter. In autumn and winter, there was the extensive area with significant variation trends in the Tibetan Plateau, decreasing in the western hinterland of the plateau and increasing around the mountain glaciers.

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王藝,朱彬,劉煜,李維亮.中國地區近10年地表反照率變化趨勢[J].氣象科技,2011,39(2):147~155

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  • 收稿日期:2010-01-15
  • 定稿日期:2010-04-08
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