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刘凡,杨莲梅.伊犁河谷初冬降水条件下风廓线雷达评估分析[J].沙漠与绿洲气象,2019,13(5):34~40
伊犁河谷初冬降水条件下风廓线雷达评估分析
Evaluation and Analysis of Wind Profiler Radar in Early Winter Precipitation Conditions in YiLi Valley
投稿时间:2019-06-04  修订日期:2019-07-05
DOI:10.12057/j.issn.1002-0799.2019.05.005
中文关键词:  风廓线雷达  数据获取率  探空资料  评估分析
英文关键词:wind profile radar  data availability  radiosonde data  evaluation analysis
基金项目:中亚大气科学研究基金(CAAS201916);中央级公益性科研院所基本科研业务费(IDM201920);国家重点研发计划(2018YFC1507102)共同资助。
作者单位E-mail
刘凡 中国气象局乌鲁木齐沙漠气象研究所 liufan320621@outlook.com 
杨莲梅 中国气象局乌鲁木齐沙漠气象研究所 yanglm@idm.com 
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中文摘要:
      对布设在伊犁河谷地区的风廓线雷达所抓取的2018年10月至12月的2次降雨过程及9次降雪过程,本文重点针对降雪过程评估其数据获取率并与探空资料进行对比分析。结果显示:超过80%数据获取率的高度,降雨时为3000m,降雪时达到预设2000m。降雪时风廓线风向、风速探测精度总体上较无降水时高,且降雪量级大小与风廓线的探测高度呈正相关,降雪量级大小对风向的探测精度有明显影响,对风速的探测精度无明显影响。比较不同高度数据,降雪时低层探测精度较好、高层探测精度较差;无降水时低层探测精度差、高层探测精度高。
英文摘要:
      On October 20, 2018 solstice November 8, 2018, 2 rainfall processes and 9 snowfall processes captured by wind profile radar deployed in yili valley area, this paper mainly evaluates the data availability rate of snowfall process and conducts comparative analysis with the radiosonde data. The results show that: When rainfall the height of the data availability exceeds 80% is 3000m, and 2000m when snowfall. When the snowfall occurs, the wind profile radar wind direction and wind speed detection precision are higher than those without precipitation, and the snowfall magnitude is positively correlated with the height of wind profile detection. The snowfall magnitude has a significant impact on the wind direction detection precision, and the wind speed detection precision is not Significant impact. Comparing different height data, the low-level detection precision is better when snowfall and the high-level detection precision is poor; when no precipitation, the low-level detection precision is poor, and the high-level detection precision is high.
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