| ZHONG Jian,FEI Jianfang,HUANG Sixun,DU Huadong,ZHANG Liang. 2012. An improved QuikSCAT wind retrieval algorithm and eye locating for typhoon. Acta Oceanologica Sinica, (1):41－50 |
| An improved QuikSCAT wind retrieval algorithm and eye locating for typhoon |
| An improved QuikSCAT wind retrieval algorithm and eye locating for typhoon |
| Received:April 21, 2010 Revised:August 10, 2011 |
| DOI：10.1007/s13131-012-0174-3 |
| Key words:scatterometer radiative transfer model typhoon wind field locating the eye of typhoon |
| 中文关键词: scatterometer radiative transfer model typhoon wind field locating the eye of typhoon |
| 基金项目:The National Natural Science Foundation of China under contract Nos 41005029, 41105012 and 41105063; the National Public Benefit (Meteorology) Research Foundation of China under contract No. GYHY201106004. |
| Author Name | Affiliation | E-mail | | ZHONG Jian | Institute of Meteorology, University of Science and Technology of People's Liberation Army, Nanjing 211101, China | zhongjianjian2008@163.com | | FEI Jianfang | Institute of Meteorology, University of Science and Technology of People's Liberation Army, Nanjing 211101, China | | | HUANG Sixun | Institute of Meteorology, University of Science and Technology of People's Liberation Army, Nanjing 211101, China | | | DU Huadong | Institute of Meteorology, University of Science and Technology of People's Liberation Army, Nanjing 211101, China | | | ZHANG Liang | Institute of Meteorology, University of Science and Technology of People's Liberation Army, Nanjing 211101, China | |
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| Abstract: |
| This paper proposes a rain considered geophysical model function (GMF), to be noted as GMF plus Rain. GMF plus Rain is based on the basic raidative transfer model with attenuation and scattering effects of rain on radar signal considered. Combined with the NSCAT2 GMF and the rain correction model, the GMF plus Rain model is used to retrieve the ocean wind vectors from the collocated QuikSCAT and SSM/I rain rate data for typhoon Melor. The resulting wind speed estimates of typhoon Melor show improved agreement with the wind fields derived from the best track analysis of Japan Meteorological Agency (JMA). The results imply that compared with the GMF model, the GMF plus Rain model can improve the precision of wind retrieval under the rain condition. Then, a new general algorithm of locating the eye of typhoon through the normalized radar cross section (NRCS) is proposed. The implementation of this algorithm in the ten QuikSCAT observations of typhoon Melor suggests that this algorithm is effective. |
| 中文摘要: |
| This paper proposes a rain considered geophysical model function (GMF), to be noted as GMF plus Rain. GMF plus Rain is based on the basic raidative transfer model with attenuation and scattering effects of rain on radar signal considered. Combined with the NSCAT2 GMF and the rain correction model, the GMF plus Rain model is used to retrieve the ocean wind vectors from the collocated QuikSCAT and SSM/I rain rate data for typhoon Melor. The resulting wind speed estimates of typhoon Melor show improved agreement with the wind fields derived from the best track analysis of Japan Meteorological Agency (JMA). The results imply that compared with the GMF model, the GMF plus Rain model can improve the precision of wind retrieval under the rain condition. Then, a new general algorithm of locating the eye of typhoon through the normalized radar cross section (NRCS) is proposed. The implementation of this algorithm in the ten QuikSCAT observations of typhoon Melor suggests that this algorithm is effective. |
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