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基于探空风资料的大气边界层不同高度风速变化研究
孟丹1, 陈正洪1, 陈城2, 孙朋杰1, 阳威1
(1.湖北省气象服务中心;2.湖北省信息技术与保障中心)
Research on Wind Changes at Different Height in the Atmospheric Boundary Layer Based on Sounding Wind Data
mengdan1, chenzhenghong1, chencheng2, sunpengjie1, yangwei1
(1.Hubei Meteorological Service Center;2.Hubei Information Technology and Security Center)
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投稿时间:2018-05-16    修订日期:2019-10-31
中文摘要: 利用我国1981-2014年资料齐全的93个高空气象观测站(距离雷达300 m、600 m、900 m高度)的探空风资料,按照气象地理区划,借助GIS分析了边界层内不同高度风速及其趋势的时空变化,得到以下结论:1)300-900 m,东北和华北地区累年平均风速较大,西南和西北地区累年平均风速较小。2)边界层内各高度同一地区平均风速的月变化趋势基本一致,但各地区季节风速变化不同,同一地区月平均风速的年较差随高度上而增大。3)300 m各地区年平均风速均显著减小;600 m和900 m,华北、西北、华中地区年平均风速呈增加趋势,东北地区年平均风速呈减小趋势,但均未通过显著性检验。4)各高度年平均风速空间分布均为东北地区较大,尤其大兴安岭和东北平原地带;从沿海到内陆,由东至西风速逐渐减小。5)300 m,全国年平均风速以减小趋势为主;600 m,全国大部分地区年平均风速呈增加趋势,尤其是中部、西北和华东沿海地区;900 m高度,全国年平均风速变化趋势呈现由边界向内部的包围态势,中心地区呈增加趋势,边界地区均呈减小趋势,但是通过显著性检验的地区不多。
中文关键词: 探空风  边界层  平均风速  显著性  变化趋势
Abstract:Based on the data of air sounding winds from 93 high-altitude meteorological stations (300m, 600m, and 900m above the radar) with complete data from 1981 to 2014 in China, the spatial and temporal variations of wind speed and its trends at different altitudes in the boundary layer were analyzed using GIS. The following conclusions were obtained: 1) At the height of 300-900 m, the average wind speed over the years in northeast and north China was relatively large, while the mean annual wind speed in southwestern and northwestern China was relatively small. 2) The monthly variation trend of average wind speed in the same level at various heights in the boundary layer was basically the same, but the seasonal wind speed variations in different regions were different. The annual range of monthly average wind speed in the same region, increases with altitude. 3) The annual average wind speed at an altitude of 300m decreases significantly. At 600m and 900m, the average annual wind speed in North China, Northwest China and Central China showed an upward trend while the average annual wind speed in Northeast China showed a decreasing trend, but none of them passed the significance test. 4) The spatial distribution of average annual wind speed at all altitudes is relatively large in northeast China, especially in the Greater Khingan Mountains and the northeast plains. The wind speed from east to west gradually decreases from the coast to the inland. 5) At 300m, the annual average wind speed in the country shows mainly a decreasing trend. At 600m, annual average wind speed in most parts of the country shows an increasing trend, especially in central China, northwest China and eastern coastal areas. At 900m, the change in annual average wind speed nationwide shows a trend of encircling from the boundary to the interior, with the central area showing an increasing trend and the border areas showing a downward trend. However, there are few areas that pass the significance test.
文章编号:201805160223     中图分类号:    文献标志码:
基金项目:中国气象局气候变化专项“我国中低空风能资源变化规律研究”(CCSF201510)
引用文本:
孟丹,陈正洪,陈城,孙朋杰,阳威,0.[en_title][J].Meteor Mon,():-.
mengdan,chenzhenghong,chencheng,sunpengjie,yangwei,0.Research on Wind Changes at Different Height in the Atmospheric Boundary Layer Based on Sounding Wind Data[J].Meteor Mon,():-.