Analysis of Horizontal Wind Field Regional Difference within Boundary Layer in Chengdu West Mountainous Area and Plain Transition Area Based on Wind Profile Radar
The wind profile radar data observed from the western mountainous and eastern plain areas of Chengdu from 1 Jan to 31 Dec 2022 are used to analyse the regional differences in the vertical structure and daily variation trend of the boundary layer wind field. The results indicate that: (1) There are r...
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Editorial Office of Meteorological Science and Technology
2024-10-01
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| Series: | Qixiang keji |
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| Online Access: | http://www.qxkj.net.cn/qxkjen/article/abstract/20240512 |
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| author | CAO Yang ZHAO Xiaoli SU Debin CHENG Xiang |
| author_facet | CAO Yang ZHAO Xiaoli SU Debin CHENG Xiang |
| author_sort | CAO Yang |
| collection | DOAJ |
| description | The wind profile radar data observed from the western mountainous and eastern plain areas of Chengdu from 1 Jan to 31 Dec 2022 are used to analyse the regional differences in the vertical structure and daily variation trend of the boundary layer wind field. The results indicate that: (1) There are regional differences in the prevailing wind direction of the lower boundary layer in Chengdu, with north-north-east winds prevailing in the western mountains area and northeast winds prevailing in the eastern plains, and without seasonal difference. While there is no regional difference in the prevailing wind direction between the east and west regions in the middle and upper boundary layer, both occur alternately with northeast and southwest winds that are consistent with the direction of the western mountain range. (2) The variation trend of the average wind speed profile in the boundary layer between the eastern and western areas of Chengdu is consistent, and the horizontal wind speed in the eastern plain area of the same detection height layer is greater than that in the western mountains area. (3) The local mountain-valley breeze is significant in the lower boundary layer of the western mountains area; the valley breeze with southeast winds prevails during the day; and the mountain breeze with northwest winds prevails at night. (4) There are no regional differences in the diurnal variation characteristics of horizontal wind speed at the same detection height layer, and it is a “single peak and single valley” type, with a peak during the day and a valley at night. (5) The differences in the wind field characteristics of the lower boundary layer between the east and west regions of Chengdu are mainly caused by the local complex terrain of the western mountains area. |
| format | Article |
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| institution | OA Journals |
| issn | 1671-6345 |
| language | zho |
| publishDate | 2024-10-01 |
| publisher | Editorial Office of Meteorological Science and Technology |
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| series | Qixiang keji |
| spelling | doaj-art-af8b287cf38d46228985c1b8f0ec8f592025-08-20T02:18:59ZzhoEditorial Office of Meteorological Science and TechnologyQixiang keji1671-63452024-10-0152574375210.19517/j.1671-6345.20230339Analysis of Horizontal Wind Field Regional Difference within Boundary Layer in Chengdu West Mountainous Area and Plain Transition Area Based on Wind Profile RadarCAO Yang0ZHAO Xiaoli1SU Debin2CHENG Xiang31 Sichuan Meteorological Disasters Prevention Technology Center, Sichuan Provincial Ecological Meteorology and Satellite Remote Sensing Center, Chengdu 610072; 2 Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province, Chengdu 610072, Email: 279827828@qq.comSichuan Meteorological Disasters Prevention Technology Center, Sichuan Provincial Ecological Meteorology and Satellite Remote Sensing Center, Chengdu 6100723 Chengdu University of Information Technology, Chengdu 610225; 4 Key Laboratory of〖JZ〗 Atmospheric Sounding, China Meteorological Administration, Chengdu 610225Sichuan Meteorological Disasters Prevention Technology Center, Sichuan Provincial Ecological Meteorology and Satellite Remote Sensing Center, Chengdu 610072The wind profile radar data observed from the western mountainous and eastern plain areas of Chengdu from 1 Jan to 31 Dec 2022 are used to analyse the regional differences in the vertical structure and daily variation trend of the boundary layer wind field. The results indicate that: (1) There are regional differences in the prevailing wind direction of the lower boundary layer in Chengdu, with north-north-east winds prevailing in the western mountains area and northeast winds prevailing in the eastern plains, and without seasonal difference. While there is no regional difference in the prevailing wind direction between the east and west regions in the middle and upper boundary layer, both occur alternately with northeast and southwest winds that are consistent with the direction of the western mountain range. (2) The variation trend of the average wind speed profile in the boundary layer between the eastern and western areas of Chengdu is consistent, and the horizontal wind speed in the eastern plain area of the same detection height layer is greater than that in the western mountains area. (3) The local mountain-valley breeze is significant in the lower boundary layer of the western mountains area; the valley breeze with southeast winds prevails during the day; and the mountain breeze with northwest winds prevails at night. (4) There are no regional differences in the diurnal variation characteristics of horizontal wind speed at the same detection height layer, and it is a “single peak and single valley” type, with a peak during the day and a valley at night. (5) The differences in the wind field characteristics of the lower boundary layer between the east and west regions of Chengdu are mainly caused by the local complex terrain of the western mountains area.http://www.qxkj.net.cn/qxkjen/article/abstract/20240512boundary layerwind field characteristicwind profile radar (wprd)regional difference |
| spellingShingle | CAO Yang ZHAO Xiaoli SU Debin CHENG Xiang Analysis of Horizontal Wind Field Regional Difference within Boundary Layer in Chengdu West Mountainous Area and Plain Transition Area Based on Wind Profile Radar Qixiang keji boundary layer wind field characteristic wind profile radar (wprd) regional difference |
| title | Analysis of Horizontal Wind Field Regional Difference within Boundary Layer in Chengdu West Mountainous Area and Plain Transition Area Based on Wind Profile Radar |
| title_full | Analysis of Horizontal Wind Field Regional Difference within Boundary Layer in Chengdu West Mountainous Area and Plain Transition Area Based on Wind Profile Radar |
| title_fullStr | Analysis of Horizontal Wind Field Regional Difference within Boundary Layer in Chengdu West Mountainous Area and Plain Transition Area Based on Wind Profile Radar |
| title_full_unstemmed | Analysis of Horizontal Wind Field Regional Difference within Boundary Layer in Chengdu West Mountainous Area and Plain Transition Area Based on Wind Profile Radar |
| title_short | Analysis of Horizontal Wind Field Regional Difference within Boundary Layer in Chengdu West Mountainous Area and Plain Transition Area Based on Wind Profile Radar |
| title_sort | analysis of horizontal wind field regional difference within boundary layer in chengdu west mountainous area and plain transition area based on wind profile radar |
| topic | boundary layer wind field characteristic wind profile radar (wprd) regional difference |
| url | http://www.qxkj.net.cn/qxkjen/article/abstract/20240512 |
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