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风廓线雷达与L波段探空雷达测风资料的对比

  

  1. 1.山东省气象科学研究所,山东 济南 250031;
    2.山东省气象局,山东 济南 250031
  • 出版日期:2016-12-30 发布日期:2016-12-30
  • 作者简介:曲巧娜(1984- ),女,硕士,工程师,主要从事天气及模式检验工作. E-mail:quqiaona77@163.com
  • 基金资助:

    公益性行业(气象)科研专项(GYHY201106006)及山东省气象局青年科研基金项目“风廓线雷达资料可用性分析”(2014SDQN03)共同资助

Comparison of Horizontal Wind Between Wind Profile Radar and L Band Sounding Radar

  1. 1. Shandong Provincial Meteorological Science Institute, Ji’nan 250031, China;
    2. Shandong Provincial Meteorological Bureau, Ji’nan 250031, China
  • Online:2016-12-30 Published:2016-12-30

摘要:

为了探讨风廓线雷达资料的可用性,对2013年9月—2015年10月青岛站和济南站的风廓线雷达与L波段探空雷达测风数据进行相关、误差及有效样本比率分析。结果表明:(1)济南站和青岛站绝大多数高度层00:00和12:00风廓线雷达与L波段探空雷达的水平风速显著正相关,通过α=0.05及以上信度检验;(2)济南站00:00和12:00,晴天1.5 km以上及雨天0.64 km以上大多高度层风廓线雷达的水平风速比L波段探空雷达偏小约2 m·s-1,且当风廓线雷达与L波段探空雷达水平风向差≤20°时,有效样本比率基本在70%以上,资料质量很高;(3)青岛站00:00和12:00,6.48 km以下大多高度层风廓线雷达探测的水平风速比L波段探空雷达偏小2~4 m·s-1,水平风速资料可用,但当2部雷达风向差≤20°时,有效样本比率仅为20%,海陆风及2种仪器的布设距离是水平风向差异的主要原因。

关键词: 风廓线雷达, L波段探空雷达, 误差分析, 有效样本比率

Abstract:

In order to explore the data availability of wind profile radar, the correlation, error and effective sample ratio of horizontal wind speed and direction between wind profile radar and L band sounding radar Ji’nan and Qingdao stations of Shandong Province from September 2013 to October 2015 were analyzed. The results are as follows: (1) The positive correlations of horizontal wind speed at most altitudes between wind profile radar and L band sounding radar Qingdao and Ji’nan stations at 00:00 UTC and 12:00 UTC from September 2013 to October 2015 were highly significant at the 0.05 and above significance level. (2) The horizontal wind speeds of wind profile radar at most heights above 1.5 km on sunny weather and 0.64 km on rainy weather were about 2 m·s-1 less than that of L band souding radar at 00:00 UTC and 12:00 UTC from September 2013 to October 2015 Ji’nan station, and when the differences of horizontal wind direction between wind profile radar and L band sounding radar were less than or equal to 20°, the effective sample ratios were above 70%, which indicated that the data quality of wind profile radar Ji’nan station was very well.  (3) The horizonal wind speeds of wind profile radar were 2-4 m·s-1 smaller than that of L band souding radar at most altitudes below 6.48 km Qingdao station at 00:00 UTC and 12:00 UTC from September 2013 to October 2015, the data of wind profile radar were useful. However when the differences of horizontal wind direction between wind profile radar and L band sounding radar were less than or equal to 20°, the effective sample ratios were only 20% due to the sea-land breeze and the longer distance between wind profile radar and L band sounding radar Qingdao, the availability of wind direction from wind profile radar was worse.

Key words: wind profile radar, L band sounding radar, error analysis, effective sample ratio

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