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遥感技术与应用  2014, Vol. 29 Issue (4): 547-556    DOI: doi:10.11873/j.issn.1004-0323.2014.4.0547
模型与反演     
北京一地基微波辐射计的观测数据一致性分析和订正实验
李青1,2,胡方超1,2,楚艳丽3,王振会1,2,黄建松2,王云1,2,朱雅毓2
(1.南京信息工程大学气象灾害预报预警与评估协同创新中心中国气象局重点实验室,江苏 南京 210044;
2.南京信息工程大学大气物理学院,江苏 南京 210044;
3.中国气象局北京城市气象研究所,北京 100089)
A Consistency Analysis and Correction of the Brightness Temperature Data Observed with a Ground based Microwave Radiometer in Beijing
Li Qing1,2,Hu Fangchao1,2,Chu Yanli3,Wang Zhenhui1,2,Huang Jiansong2,Wang Yun1,2,Zhu Yayu2
(1.Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,CMA Key Laboratory of Aerosol\|Cloud\|Precipitation,Nanjing University of
Information Science & Technology,Nanjing 210044,China;
2.School of Atmospheric Physics,Nanjing University of Information Science &Technology,Nanjing 210044,China;
3.Institute of Urban Meteorological Research,CMA,Beijing 100089,China)
 全文: PDF(2763 KB)  
摘要:

基于辐射传输理论,以地基微波辐射计亮温数据质量控制研究为目的,以北京一台多通道微波辐射计为例,对其2010和2011年每天8:00和20:00(BT)的“晴空”观测亮温数据进行了分析,并利用独立来源的大气层结资料通过辐射传输方程进行亮温模拟计算,检验了亮温数据的“晴空”观测和数值模拟结果之间的一致性,发现了因“定标”和“搬迁”引起的数据不连续和不一致问题,考虑到“定标”使观测和数值模拟结果之间的一致性优于定标之前而“搬迁”改变的是地基微波辐射计的工作环境,通过对观测数据进行分段拟合订正,改善了观测数据的连续性和一致性。该研究对基于辐射传输理论的观测数据质量控制和提高观测资料的可利用性有参考价值。

关键词: 数据质量控制微波辐射计辐射传输方程线性订正    
Abstract:

In this paper,taking a multi\|channel microwave radiometer in Beijing for example,we analyzed the continuity of the “clear sky” brightness temperature data observed at eight and twenty o’clock (BT) during the 24 months in both 2010 and 2011 with the purpose of the brightness temperature data quality controlling.Using the atmospheric profile data from independent sources such as NCEP,we calculated the brightness temperatures through the radiative transfer equation and tested the consistency between the observed brightness temperatures and the simulated results in “clear sky” condition.This study has been found that the problem of discontinuous and inconsistency in observations is due to “Liquid Nitrogen Calibration” and “moving” which happened successively to the radiometer.And correcting for these influences based on piecewise fitting has been realized,and the continuity and consistency of the observed brightness temperature data has been improved.The result shows that quality control on the brightness temperature observations is necessary before further applications.

Key words: Data quality control    Microwave radiometer    Radiative transfer equation    Linear correction
收稿日期: 2013-08-23 出版日期: 2014-09-19
:  P 413  
基金资助:

国家自然科学基金项目(41005005)、城市气象科学研究基金(IUMKY&UMRF201101)、江苏省研究生创新项目(CXLX12-0499)。

通讯作者: 胡方超(1973-),男,江苏睢宁人,副教授,主要从事大气探测与遥感方面的研究。Email:hufuncho@sohu.com。    
作者简介: 李青(1987-),女,山东菏泽人,硕士研究生,主要从事大气遥感科学与技术方面的研究。Email:stunanjo@gamil.com。
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引用本文:

李青,胡方超,楚艳丽,王振会,黄建松,王云,朱雅毓. 北京一地基微波辐射计的观测数据一致性分析和订正实验[J]. 遥感技术与应用, 2014, 29(4): 547-556.

Li Qing,Hu Fangchao,Chu Yanli,Wang Zhenhui,Huang Jiansong,Wang Yun,Zhu Yayu. A Consistency Analysis and Correction of the Brightness Temperature Data Observed with a Ground based Microwave Radiometer in Beijing. Remote Sensing Technology and Application, 2014, 29(4): 547-556.

链接本文:

http://www.rsta.ac.cn/CN/doi:10.11873/j.issn.1004-0323.2014.4.0547        http://www.rsta.ac.cn/CN/Y2014/V29/I4/547

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