谢慧玲, 朱克云, 张杰, 范广洲, 范艺, 欧映瑜. 地基微波辐射计资料质量定量分析[J]. 云南大学学报(自然科学版), 2018, 40(1): 94-103. doi: 10.7540/j.ynu.20170383
引用本文: 谢慧玲, 朱克云, 张杰, 范广洲, 范艺, 欧映瑜. 地基微波辐射计资料质量定量分析[J]. 云南大学学报(自然科学版), 2018, 40(1): 94-103. doi: 10.7540/j.ynu.20170383
XIE Hui-ling, ZHU Ke-yun, ZHANG Jie, FAN Guang-zhou, FAN Yi, OU Ying-yu. A quantitatively analyze the quality of ground-base microwave radiometer[J]. Journal of Yunnan University: Natural Sciences Edition, 2018, 40(1): 94-103. DOI: 10.7540/j.ynu.20170383
Citation: XIE Hui-ling, ZHU Ke-yun, ZHANG Jie, FAN Guang-zhou, FAN Yi, OU Ying-yu. A quantitatively analyze the quality of ground-base microwave radiometer[J]. Journal of Yunnan University: Natural Sciences Edition, 2018, 40(1): 94-103. DOI: 10.7540/j.ynu.20170383

地基微波辐射计资料质量定量分析

A quantitatively analyze the quality of ground-base microwave radiometer

  • 摘要: 为了评估新型气象遥测设备微波辐射计对气球探空的气象业务可替代性和民航机场气象服务中对局地中小尺度系统监测预警的适用性,利用2015年6—12月在昆明试验的北京爱尔达电子公司的HTG-4型微波辐射计温湿数据,以同址气球探空作为基准,经时空同步方法处理数据后,采用分时次和分天气类型的方法并结合航空气象服务的需求,进行辐射计资料质量的定量分析,并对添加云雷达信息前后的辐射计数据进行了质量改善分析.结果表明:①辐射计低层探测温湿数据优于高层,温度数据优于湿度数据.②温度数据与气球探空相关性好,相关系数可达0.998,整体平均偏差为0.8℃.③汛期14:00低层探测误差较大,20:00探测效果优于08:00.在易成云的高度上辐射计遥感测值会受影响.④温度、相对湿度、水汽密度的相关系数在4种天气类型下均大于0.812,误差均较小,廓线一致性好,但对逆温层的识别效果较差.因探测原理的差异,辐射计的局部湿度特性敏感性不如气球探空.⑤加入云信息后,相对湿度数据相关系数从0.899提高至0.929,温度数据相关系数从0.996提高至0.997,辐射计温湿数据高层改善更明显.若在气象业务中使用加入云信息后的辐射计温湿数据,除了能有效地补充气球探空时空分辨率的限制外,还能显著提高温湿数据精度,为民航机场气象服务增加一种解决途径.

     

    Abstract: Aiming to evaluate the feasibility of microwave radiometer,a new meteorological equipment,substituting for balloon sounding in meteorological service,this paper has used data from the HTG-4 microwave radiometer at June to December 2015 in Kunming,the same site balloons data as the benchmark,to quantitatively analyze the quality of microwave radiometer after data processing by the spatiotemporal synchronization method.The results show that,firstly,the accuracy of low level temperature and humidity radiometer data is superior to that of the high level data,the accuracy of the temperature data superior to that of humidity data.Secondly,the correlation between radiometer temperature data and balloon can reach 0.998,which is excellent.The average deviation is 0.8℃.Thirdly,at 14:00 in the flood season,the detection error of the lower layer is larger,and the detection effect at 20:00 is better than that at 08:00.At cloud formation height,radiometer remote sensing values will be affected.The correlation coefficient of temperature,relative humidity,and water vapor is greater than 0.812 in four types of weather.The error is small,and the profile is consistent,but the recognition effect of inversion layer is weak.What's more,the correlation coefficient of relative humidity data with adding the cloud information can increase from 0.899 to 0.929;the correlation coefficient of temperature data can slightly increase from 0.996 to 0.997,and the high level temperature and humidity data can be obviously better obtained after adding the cloud information.The temperature and humidity data of radiometer after adding cloud information can improve the accuracy of meteorological service in future and effectively supplement balloon sounding spatiotemporal and resolution limitation.

     

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