大气与环境光学学报 ›› 2015, Vol. 10 ›› Issue (3): 260-268.

• 光学遥感 • 上一篇    下一篇

利用新型经验函数模拟云底亮温及误差分析

张婷1, 刘磊1, 高太长1, 吴磊2   

  1. (解放军理工大学气象海洋学院,江苏 南京 211101)
  • 收稿日期:2014-07-28 修回日期:2014-09-21 出版日期:2015-05-28 发布日期:2015-05-18
  • 通讯作者: 张婷,(1990-),女,陕西渭南人,硕士研究生,主要从事地面气象自动化观测技术研究。 E-mail:2009gtc@gmail.com
  • 作者简介:张婷,(1990-),女,陕西渭南人,硕士研究生,主要从事地面气象自动化观测技术研究。
  • 基金资助:

    国家自然科学基金青年基金(41205125)资助

Simulation of Cloud-Base Brightness Temperature and  Error Analysis by Using a New Empirical Function

ZHANG Ting1, LIU Lei1, GAO Taichang1, WU Lei2   

  1. (1 College of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing 211101, China; 
    2 College of Basic Education for Commanding Officers, PLA University of Science and Technology, Nanjing 211101, China)
  • Received:2014-07-28 Revised:2014-09-21 Published:2015-05-28 Online:2015-05-18

摘要:

Stephen在2008年提出了一种新型亮温经验函数,为反演云底高提供了一种无需计算大气中实时水汽含量的新方法。利用SBDART模式和Stephen亮温函数比较系统地研究了不同天顶角、水汽、云、气溶胶、能见度等气象要素条件下,云底红外亮温 随天顶角的变化情况,并对其进行误差分析。模拟结果显示,水汽、云、天顶角及能见度小于5 km时对 影响较大,不同气象要素条件下,Stephen亮温函数模拟的云底亮温与SBDART模拟结果相近,所以,采用Stephen亮温函数模拟云底亮温具有可行性。

关键词: 云, 云底亮温, 辐射传输模式, Stephen亮温函数

Abstract:

In 2008, Stephen put forward a new brightness temperature function and the expression is purely empirical. However, it does not require knowledge of the total amount of atmospheric water vapor in retrieval of cloud-base height. Systematical investigation of the changes of the cloud-based infrared brightness temperature as the zenith angle, water vapor, cloud, aerosol, visibility and other meteorological conditions is performed by using the SBDART model and Stephen brightness temperature function, and the error is analyzed. The results show that zenith angle, water vapor, cloud, aerosol and visibility less than 5 km have a very important influence on . Under different meteorological conditions, the simulation results of Stephen function are similar to SBDART model. Therefore, Stephen brightness temperature function can be used to simulate the cloud-base brightness temperature.

Key words: cloud, cloud-base brightness temperature, SBDART model, Stephen brightness temperature function

中图分类号: