摘要
文中阐述了用热带降雨测量卫星 (TRMM )微波成像仪 (TMI)监测地面洪涝灾害的能力 ,并利用动态聚类、土壤湿度指数、极化亮温差指数、极化亮温比指数等 4种基于TMI亮温资料的方法遥感了 1998年夏季中国江淮流域的洪涝灾害。通过与机载雷达图像、星载雷达图像以及基于地面日降雨量资料的Z 指数方法确定的地面洪涝情况的对比 ,结果表明用TMI亮温资料监测地面洪涝灾害是可行的 。
The ability of TRMM/TMI for flooding and soil wetness detection has been demonstrated in this study. On the basis of TMI measurements, four methods, the classification method, the soil wetness index (SWI) method, the polarization difference index (PDI) method, and the polarization ratio index (PRI) method, were brought out to monitor flooding and study soil wetness in the Yangtze River and the Huaihe River basins during the summer 1998. Compared the images provided by L band Synthetic Aperture Radar (L SAR) and Radar Satellite (Radarsat) with the figures derived from daily rainfall data based on the Z index method, the flooding and soil wetness detection by TMI was proved to be feasible.
出处
《气象学报》
CAS
CSCD
北大核心
2002年第2期243-249,共7页
Acta Meteorologica Sinica
基金
国家自然科学基金项目 (4 97940 3 0 )
中国气象局和吉林省人民政府人工影响天气联合开放实验室科学基金
国家重点科技攻关项目 (2 0 0 1BA610A 0 6 0 5 )
