Seasonal and interannual variations of upper tropospheric water vapor band brightness temperature over the global monsoon regions
Seasonal and interannual variations of upper tropospheric water vapor band brightness temperature over the global monsoon regions
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DOI：
10.1007/s00376-998-0005-9
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发表时间：
1998-07
影响因子：
5.8
通讯作者：
Q. Wei-hong;Zhu Fen;Xie An;Ye Qian
中科院分区：
文献类型：
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作者：
Q. Wei-hong;Zhu Fen;Xie An;Ye Qian
摘要利用美国国家海洋和大气管理局（NOAA）极地卫星高分辨率红外辐射测深仪（HIRS） 12频道1979 ~ 1995年的对流层上层水汽（UTWV）波段亮度温度（BT）数据，分析了全球季风区的季节和年际变化。结果表明：(1)UTWV波段BT随季节变化显著的区域主要有南亚、南美、北美西部沿海热带地区和非洲低纬度地区；（ii） UTWV波段BT清晰地揭示了季风发生时低纬度地区的水汽时空特征和大气环流结构；(3)季风区UTWV波段BT的年际变化与赤道东太平洋海温异常有显著的相关性。
The upper-troposphere water vapor (UTWV) band brightness temperature (BT) dataset derived from the High resolution Infrared Radiation Sounder (HIRS) channel 12 of the National Oceanic and Atmospheric Administration (NOAA) polar satellites from 1979 to 1995 is used to analyze the seasonal and interannual variations for the global monsoon regions. Results show that (i) there are three major regions where the UTWV band BT varies significantly with season, ie, South Asia, the western coastal South-North America tropical region and the low-latitude African region;(ii) UTWV band BT clearly reveals the water vapor temporal/spatial features as well as the atmospheric circulation structure over the low-latitude during the monsoon onset; and (iii) there is a remarkable relationship between the interannual variation of the UTWV band BT over the monsoon regions and the sea surface temperature anomaly in the eastern equatorial Pacific.