主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2016, Vol. 32 ›› Issue (2): 59-65.doi: 10.11927/j.issn.1673-503X.2016.02.008

• 论文 • 上一篇    下一篇

AMSR-E数据参数化法反演液态云水路径研究

王颖1, 李国春2, 高阳华3, 杜钦3, 赵梓淇4   

  1. 1. 重庆市江津现代农业气象试验站, 重庆 402260;
    2. 沈阳农业大学, 辽宁 沈阳 110161;
    3. 重庆市气象科学研究所, 重庆 401147;
    4. 中国气象局沈阳大气环境研究所, 辽宁 沈阳 110166
  • 收稿日期:2014-08-20 修回日期:2015-07-08 出版日期:2016-04-30 发布日期:2016-04-30
  • 通讯作者: 李国春,E-mail:54739616@qq.com。 E-mail:54739616@qq.com
  • 作者简介:王颖,女,1985年生,工程师,主要从事气象遥感研究,E-mail:wangying851214@163.com。
  • 基金资助:
    重庆市气象局青年基金项目(QNJJ-201510)资助。

Polarization-difference parameterization in estimating liquid water path based on AMSR-E data

WANG Ying1, LI Guo-chun2, GAO Yang-hua3, DU Qin3, ZHAO Zi-qi4   

  1. 1. Jiangjin Modern Agrometeorological Experiment Station, Chongqing 402260, China;
    2. Shenyang Agricultural University, Shenyang 110161, China;
    3. Chongqing Institute of Meteorological Sciences, Chongqing 401147, China;
    4. Institute of Atmospheric Environment, China Meteorological Administration, Shenyang 110166, China
  • Received:2014-08-20 Revised:2015-07-08 Online:2016-04-30 Published:2016-04-30

摘要: 液态云水路径是气象学和云雾物理的一个重要参数,其定量测量对气候变化及灾害性天气的监测和预报均具有十分重要的作用。本文利用AUQA卫星携带的微波成像仪AMSR-E和中分辨率成像光谱仪MODIS确定微波极化通道亮温与大气含水量ω的关系,并改进双极化参数法。结果表明:利用AMSR-E的89.0 GHz和36.5 GHz微波极化通道亮温数据可直接反演液态云水路径,并可依据MODIS反演的大气含水量ω将反演分辨率估算至1 km。反演结果与MODIS云图路径吻合,与NCEP 1°×1°的6 h液态云水路径垂直积分总含量资料进行对比,表明反演结果误差小于0.04 kg·m-2

关键词: 液态云水路径, 微波遥感, AMSR-E, MODIS

Abstract: Cloud liquid water (vertically-integrated cloud liquid water) is a key parameter in meteorology and cloud physics, and its quantitative measurement is important to climate change, numerical weather prediction (NWP), and severe weather monitoring.Using a combination of the space-borne microwave radiometer AMSR-E and the Moderate Resolution Imaging MODIS with AUQA, relationship between microwave polarization channel bright ness temperature and atmospheric moisture ω was established, and the polarization-difference parameterization (PDP) was improved.The results indicate that cloud liquid water path can be directly retrieved by the Advanced Microwave Scanning Radiometer for earth observing plan (EOS) (AMSR-E) polarization-difference signals at 36.5 GHz and 89 GHz, and the resolution could reach 1 km according to retrieved ω of MODIS.Retrieval of cloud liquid water path from AMSR-E and the presented cloud image by MODIS conforms completely.Compared with the retrieved products from the NCEP 1°×1° 6 h vertically-integrated cloud liquid water data, the error is less than 0.04 kg·m-2.

Key words: Cloud liquid water path, Microwave remote sensing, AMSR-E (Advanced Microwave Scanning Radiometer for earth observing plan), MODIS(Moderate-Resolution Imaging Spectroradiometer)

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