台风"杜鹃"的 AMSU卫星微波探测资料分析

魏应植; 许健民; 周学鸣

台风"杜鹃"的 AMSU卫星微波探测资料分析

1.
厦门市气象局, 福建, 厦门, 361012;南京信息工程大学, 江苏, 南京, 210044
2.
国家卫星气象中心, 北京, 100081
3.
厦门市气象局, 福建, 厦门, 361012

基金项目: 厦门市科技局3502Z20034017计划资助

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出版历程
- 收稿日期: 2004-08-30
- 修回日期: 2004-11-18

APPLICATION OF NOAA-AMSU MICROWAVE SOUNDINGS TO TYPHOON DUJUAN

1.
Xiamen Meteorological Bureau, Xiamen 361012;Nanjing University of Information Science and Technology, Nanjing 210044, China
2.
National Satellite Meteorological Center, Beijing 100081, China
3.
Xiamen Meteorological Bureau, Xiamen 361012

摘要

摘要: 由于微波具有穿透云的能力, AMSU卫星探测资料得到了越来越广泛的应用。利用AMSU多个通道的资料, 对2003年台风"杜鹃"过程进行了分析。通过比较AMSU-B(89GHz和150GHz)与GOES-9的台风结构图像可以发现微波具有较强的垂直探测能力;在AMSU-B的5个通道中, 通道2(Ch2)亮温值的大小能够最好地反映热带气旋螺旋雨带冰晶层的深厚程度, 从而判定螺旋雨带的强度;Ch2的亮温分布与雷达的强降水回波有较好的对应关系;利用AMSU-A温度反演资料能够清晰地揭示热带气旋的暖心结构、地面风速和中心气压与250hPa温度距平的关系, 以及强降水的落区等。结果表明:AMSU资料作为一种新的卫星微波探测资料, 在热带气旋的结构、螺旋雨带的强度及其降水强度的分析预报中具有一定的应用价值。
- 台风"杜鹃" /
- 微波探测资料 /
- 应用分析
Abstract: Microwave sensings from the AMSU aboard NOAA satellites, penetrating through a thick extent of cloud cover, find an increasingly wider range of applications. Based on AMSU multi-channel soundings, analysis is made of Typhoon Dujuan of 2003, and from this study microwave sounding is found to have stronger ability of vertical sensing by comparing images of the structure of the storm from AMSU-B (89 and 150 GHz) and GOES-9 data. Of the five channels of AMSU-B, CH2-related brightness temperatures are well indicative of the thickness of ice crystals in the spiral rainband of the tropical storm, with which the strength of the rainband is judged. Ch-2 brightness temperatures’ distribution corresponds better to echoes from an intense rainfall zone. The retrieval of temperatures from AMSU-A soundings is able to clearly reveal the warm-core structure of the cyclone, surface wind speed and sea-level central pressure in relation to the 250-hPa temperature anomaly and a surface area of strong precipitation. As a result, as a new kind of satellite soundings, AMSU microwave data are of some utility in analyzing and forecasting the structure of tropical cyclones, and intensity of a spiral rainband and rainfall.
- Typhoon "Dujuan" /
- microwave soundings /
- application

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参考文献(10)

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