不同海区大气条件对船载微波辐射计反演结果的影响

• 作 者: 李秀镇 李博 王力群 谭俊龄
• 机 构: 中国卫星海上测控部,江苏江阴,214431;青岛市城阳区气象局,山东青岛,266100
• 出 处: 海洋湖沼通报
• 发表日期: 2017年2期
• 关键词: microwave radiometer ocean weather condition retrieval error

基于探空资料,对不同纬度海区船裁微波辐射计的反演误差进行了分析.结果表明:(1)观测期间南半球热带地区与赤道地区对流层平均高度为17.5km左右,高于北半球中纬度地区(16km).(2)相比于采用单神经网络,依据北半球中纬度地区、南半球热带地区、赤道地区三类区域划分不同神经网络进行反演的结果取得一定优化效果,具体表现在南半球热带地区高空温度、低空相对湿度和赤道地区低空温度、相对湿度的反演误差的减小.(3)相关分析表明,微波辐射计对温度的反演效果优于相对湿度,北半球中纬度地区相对湿度的反演优于南半球热带地区与赤道地区.“,”Based on radiosonde data,the retrieval error of microwave radiometer over the ocean at different latitudes was analyzed.We found that (1) the troposphere in tropical region of the southern hemisphere and near the equator was higher than that in the middle latitude region of the northern hemisphere;and (2) compared with single neural network,the retrieval errors were reduced by using different neural networks to three regions,the southern hemisphere,northern hemisphere and the equator.The correlation analysis indicated that the error of temperature was smaller than that of relative humidity.The retrieved relative humidity in the middle latitude region of the northern hemisphere was better than those in other two oceanic regions.