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- 2018
北极一年海冰表面积雪深度遥感反演与时序分析
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Abstract:
北极海冰表面的积雪深度是重要的地球物理变量，是研究物质与能量平衡、计算海冰厚度的重要参数。为减小不同被动微波传感器观测数据的系统误差，对国防气象卫星计划（Defense Meteorological Satellite Program，DMSP）F17-SSMIS与F13-SSM/I重叠期亮度温度数据进行交叉定标，建立4个频段48个月尺度定标模型，并与传统年尺度定标模型进行比较和优选，在此基础上估算并分析2003-2014年北极一年海冰表面积雪深度变化。结果表明：19H、19V、22V、37V频段1~5月的月尺度模型决定系数高于传统年尺度拟合模型；2003-2014年，北极一年海冰表面积雪深度总体呈现下降趋势，同时积雪深度存在明显的周期性变化，每年7月积雪深度最小，9月最大；东西伯利亚海、拉普捷夫海和巴伦支海海冰表面积雪深度呈现减少的趋势
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