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气象:2020,46(6):745-752
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船载毫米波云雷达观测西太平洋云宏观特征对比分析
胡树贞,曹晓钟,陶法,张雪芬
(中国气象局气象探测中心,北京 100081; 南京信息工程大学,南京 210044)
Comparative Analysis of Cloud Macro Characteristics from Two Shipborned Millimeter Wave Cloud Radars in the West Pacific
HU Shuzhen,CAO Xiaozhong,TAO Fa,ZHANG Xuefen
(CMA Meteorological Observation Center, Beijing 100081; Nanjing University of Information Science and Technology, Nanjing 210044)
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投稿时间:2019-04-25    修订日期:2019-10-17
中文摘要: 2017年10月15日至11月15日,利用“科学”号海洋科学综合考察船安装的两种型号云雷达(HT101、HMBKPS)开展西太平洋云观测试验研究。试验期间定时释放探空仪,利用探空仪的出云及入云高度,开展云雷达云高准确性分析;同船安装一台可见光&热红外双波段天空成像仪获取天顶图像,分析云雷达数据获取率。试验结果表明:两部云雷达云高数据一致性较好,探测云底高度相关系数为0.997,云顶高度相关系数为0.988;云雷达探测云高准确性高,与基于探空识别的云底高度平均偏差分别为130 m(HT101)、72 m(HMBKPS),云顶高度平均偏差分别为310 m(HT101)、190 m(HMBKPS);受海洋性气候及船体摇摆影响,两部云雷达云数据获取率分别为57.8%(HT101)、68.7%(HMBKPS),漏测主要为卷云和淡积云。
Abstract:From 15 October to 15 November 2017, two types of millimeter wave cloud radar (MMCR)(HT101, HMBKPS) installed on the “Science” marine science research ship were used for cloud observation in the West Pacific. Sounding balloons were released periodically during the observation; the accuracy of MMCR was analyzed according to the height of sounding out of cloud and into cloud. A visible light and thermal infrared dual band sky imager was also installed on the ship to obtain 24 h zenith image and MMCR data acquisition rate was analyzed by these images. The test results show that the data of two radars were highly consistent, the cloud base height correlation coefficient was 0.997, and cloud top height correlation coefficient was 0.988. The accuracy of cloud height observation by two types of MMCR was high; the average deviations of cloud base height between sounding and MMCR were 130 m (HT101) and 72 m (HMBKPS); the average deviations of cloud top height between sounding and MMCR were 310 m (HT101) and 190 m (HMBKPS), respectively. Affected by maritime climate and ship swaying, the cloud data acquisition rates of the two MMCR were 57.8% (HT101) and 68.7% (HMBKPS), respectively, and the missed clouds were mainly cirrus and cumulus clouds.
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基金项目:国家自然科学基金重点项目(61531019)和国家重点研发计划(2017YFC1501700)共同资助
引用文本:
胡树贞,曹晓钟,陶法,张雪芬,2020.船载毫米波云雷达观测西太平洋云宏观特征对比分析[J].气象,46(6):745-752.
HU Shuzhen,CAO Xiaozhong,TAO Fa,ZHANG Xuefen,2020.Comparative Analysis of Cloud Macro Characteristics from Two Shipborned Millimeter Wave Cloud Radars in the West Pacific[J].Meteor Mon,46(6):745-752.