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

气象与环境学报 ›› 2017, Vol. 33 ›› Issue (6): 89-95.doi: 10.3969/j.issn.1673-503X.2017.06.012

• 简报 • 上一篇    下一篇

RPG-HATPRO微波辐射计反演的温度和湿度数据适用性分析

李建强1,2, 李新生2, 董文晓2, 吕菁菁1   

  1. 1. 山西省气象信息中心, 山西 太原 030006;
    2. 山西省气象台, 山西 太原 030006
  • 收稿日期:2017-02-13 修回日期:2017-05-01 出版日期:2017-12-30 发布日期:2017-12-30
  • 作者简介:李建强,男,1983年生,工程师,主要从事系统运维和数据分析研究,E-mail:lijianqiang031@163.com。
  • 基金资助:
    中国气象局预报员专项（CMAYBY2016-011）和山西省气象局课题（SXKYBT201510036）共同资助。

Applicability analysis of air temperature and humidity data retrieved from a RPG-HATPRO microwave radiometer

LI Jian-qiang1,2, LI Xin-sheng2, DONG Wen-xiao2, LÜ Jing-jing1   

  1. 1. Shanxi Meteorological Information Center, Taiyuan 030006, China;
    2. Shanxi Meteorological Observatory, Taiyuan 030006, China
  • Received:2017-02-13 Revised:2017-05-01 Online:2017-12-30 Published:2017-12-30

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摘要： 以太原地区常规探空观测资料为参考，选取2015年2月13日至2016年6月21日地面、925 hPa、850 hPa、700 hPa、500 hPa、400 hPa、300 hPa的00时次和12时次温度与露点温度的配对数据，采用统计学方法对比分析同址德国RPG-HATPRO型微波辐射计反演的温度和湿度数据。结果表明：不同等压层微波辐射计反演的温度与探空观测的温度数据存在一定的偏差，微波辐射计反演的温度数据相对探空观测的温度数据系统性偏小。微波辐射计反演的和探空观测的温度数据同步性较强，二者相关系数为0.89以上，二者露点温度数据的相关系数为0.60以上。综合分析可知，降水对微波辐射计反演的温度和湿度数据影响均较大。为了验证不同等压层微波辐射计反演温度数据的偏差准确性，在对比分析的基础上建立微波辐射反演温度的订正模型，采用滑动均值订正法和配对样本T检验验证法对微波辐射计反演的温度进行订正，订正偏差为0.5℃以内。

关键词: 微波辐射计, 滑动均值法, 配对T检验法, 订正

Abstract: The data of air temperature and humidity retrieved from a German RPG-HATPRO microwave radiometer were statistically analyzed in comparison with the routine sounding data at the same observational site in Taiyuan for air temperature and dew point temperature at surface,925 hPa,850 hPa,700 hPa,500 hPa,400 hPa, and 300 hPa at 00:00 and 12:00 from February 13,2015 to June 21,2016.The results show that certain deviation exists between the temperature retrieved using the microwave radiometer and that observed by sounding at different isobaric levels.The temperature data from microwave radiometer are systematically smaller than the sounding temperature.The correlation coefficient value between the two kinds of temperature data is larger than 0.89,which means a high synchronism in the temperature data,and the correlation coefficient in dew point temperature is larger than 0.60.Precipitation has a great influence on the temperature and humidity data retrieved from the microwave radiometer.A correction model for the temperature data measured from the microwave radiometer is established to verify the accuracy of the temperature data at different isobaric levels.The temperature data are corrected using a moving average method and a T-test method for paired samples,and the bias correction is smaller than 0.5℃.

Key words: Microware radiometer, Moving average method, Paired T-test method, Correction

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