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利用北疆地区2007/2008—2009/2010年度积雪季(12月至次年2月)的AMSR-E降轨19GHz与37GHz波段的水平极化亮温数据,结合北疆地区45个气象台站的实测雪深数据,建立了北疆地区基于AMSR-E亮度温度数据的雪深反演模型,并对模型的精度进行评价.结果显示:雪深在3～10cm时,模型反演的雪深值负向平均误差为-5.1cm,RMSE值为6.1cm;雪深在11～30cm时,模型反演雪深值的平均误差仅为2.6cm,RMSE、正向平均误差、绝对平均误差均较小;雪深大于30cm时,模型反演的各项误差较大.用合成方法反演北疆地区2006/2007—2010/2011年度5个积雪季的平均雪深分布和最大雪深分布,结果显示北疆地区积雪主要分布于北部阿尔泰山和南部天山一带,其中阿勒泰地区所占比重最大,中部的准噶尔盆地腹地、克拉玛依地区雪层较浅.
Based on the data of horizontal polarized brightness temperature at 19GHz and 37GHz in AMSR-E of the snow fall season from December 2007 to February of next year in the northern region of Xinjiang, in conjunction with 45 meteorological stations in northern Xinjiang , A snow depth inversion model based on AMSR-E brightness temperature data was established in northern Xinjiang and the accuracy of the model was evaluated.The results show that the snow depth The mean negative mean error is -5.1cm and the RMSE is 6.1cm. The mean error of model snow depth inversion is only 2.6cm when the snow depth is 11 ~ 30cm. RMSE, positive mean error and absolute mean error are both The error of model inversion is large when the snow depth is more than 30cm.The average snow depth distribution and the maximum snow depth distribution of the five snow cover periods in northern Xinjiang from 2006/2007 to 2010/2011 are retrieved by synthetic method, The results show that the snow cover in northern Xinjiang is mainly distributed in the northern Altai and southern Tianshan areas, of which the Aletai region has the largest proportion of snow cover, and the hinterland of the Junggar Basin in the central region and the shallow snow layer in the Karamay region.