附加影响因子对红外遥感资料反演大气温湿廓线的辅助作用

蒋德明1,董超华2,曹思沁3

附加影响因子对红外遥感资料反演大气温湿廓线的辅助作用

蒋德明1,董超华2,曹思沁3

湖南省气象科学研究所,湖南长沙 410007;2. 国家卫星气象中心,北京 100081;3. 湖南省气象局,湖南长沙 410007

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摘要:
利用AIRS(Atmospheric Infrared Sounder)实际观测资料和采用特征向量反演方法，研究了非红外遥感因子对红外遥感大气温湿廓线反演的辅助作用。这些因子包括：微波探测通道、纬度、地形、表面高度、表面温度、表面气压等。试验结果表明，微波通道可以明显改善对流层中低层(800 hPa以下)温度和湿度的反演结果，对800 hPa以上没有明显的作用。划分纬度带有助于提高反演精度。在较平坦的地区温度反演的均方根误差远远小于地形起伏较大的地区。而水汽反演误差对地形变化不敏感。增加附加影响因子对改善对流层中低层温度反演精度有十分明显的作用，对中低层湿度反演精度有一定的改善。
- 卫星遥感 /
- 统计反演方法 /
- 红外 /
- 高光谱分辨率 /
- 大气廓线

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