Observation of nocturnal low-level wind shear and particulate matter in urban Beijing using a Doppler wind lidar
A field experiment of nocturnal mountain wind and corresponding particulate matter (PM) evolution under weak synoptic forcing at five sites within urban Beijing was conducted using a moving Doppler wind lidar and a fixed tower. Clear wind shear and zero-horizontal-wind zones at 40–320 m above the gr...
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KeAi Communications Co., Ltd.
2017-11-01
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Series: | Atmospheric and Oceanic Science Letters |
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Online Access: | http://dx.doi.org/10.1080/16742834.2017.1368349 |
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doaj-f86869a0ce8c4466b3c78c55fa591fe72021-04-02T12:32:58ZengKeAi Communications Co., Ltd.Atmospheric and Oceanic Science Letters1674-28342376-61232017-11-0110641141710.1080/16742834.2017.13683491368349Observation of nocturnal low-level wind shear and particulate matter in urban Beijing using a Doppler wind lidarYong Chen0Jun-Ling An1Jian Lin2Ye-Le Sun3Xi-Quan Wang4Zi-Fa Wang5Jing Duan6Chinese Academy of SciencesChinese Academy of SciencesChinese Academy of SciencesChinese Academy of SciencesChinese Academy of SciencesChinese Academy of SciencesChinese Academy of Meteorological SciencesA field experiment of nocturnal mountain wind and corresponding particulate matter (PM) evolution under weak synoptic forcing at five sites within urban Beijing was conducted using a moving Doppler wind lidar and a fixed tower. Clear wind shear and zero-horizontal-wind zones at 40–320 m above the ground with a delay of 1.5 h were found at two sites between 20 km from north to south urban Beijing. The wind speed and height of the low-level jet at the north urban Beijing site were greater than those at the east urban Beijing site. The average horizontal distribution of low-level PM at 240 m was similar to the ground-level PM at night. The PM2.5 (aerodynamic diameter ≤2.5 μm) accumulation center showed no abrupt changes with a shift in wind direction until the northerly wind jet arrived.http://dx.doi.org/10.1080/16742834.2017.1368349Mountain-plain windwind shearwind lidar |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yong Chen Jun-Ling An Jian Lin Ye-Le Sun Xi-Quan Wang Zi-Fa Wang Jing Duan |
spellingShingle |
Yong Chen Jun-Ling An Jian Lin Ye-Le Sun Xi-Quan Wang Zi-Fa Wang Jing Duan Observation of nocturnal low-level wind shear and particulate matter in urban Beijing using a Doppler wind lidar Atmospheric and Oceanic Science Letters Mountain-plain wind wind shear wind lidar |
author_facet |
Yong Chen Jun-Ling An Jian Lin Ye-Le Sun Xi-Quan Wang Zi-Fa Wang Jing Duan |
author_sort |
Yong Chen |
title |
Observation of nocturnal low-level wind shear and particulate matter in urban Beijing using a Doppler wind lidar |
title_short |
Observation of nocturnal low-level wind shear and particulate matter in urban Beijing using a Doppler wind lidar |
title_full |
Observation of nocturnal low-level wind shear and particulate matter in urban Beijing using a Doppler wind lidar |
title_fullStr |
Observation of nocturnal low-level wind shear and particulate matter in urban Beijing using a Doppler wind lidar |
title_full_unstemmed |
Observation of nocturnal low-level wind shear and particulate matter in urban Beijing using a Doppler wind lidar |
title_sort |
observation of nocturnal low-level wind shear and particulate matter in urban beijing using a doppler wind lidar |
publisher |
KeAi Communications Co., Ltd. |
series |
Atmospheric and Oceanic Science Letters |
issn |
1674-2834 2376-6123 |
publishDate |
2017-11-01 |
description |
A field experiment of nocturnal mountain wind and corresponding particulate matter (PM) evolution under weak synoptic forcing at five sites within urban Beijing was conducted using a moving Doppler wind lidar and a fixed tower. Clear wind shear and zero-horizontal-wind zones at 40–320 m above the ground with a delay of 1.5 h were found at two sites between 20 km from north to south urban Beijing. The wind speed and height of the low-level jet at the north urban Beijing site were greater than those at the east urban Beijing site. The average horizontal distribution of low-level PM at 240 m was similar to the ground-level PM at night. The PM2.5 (aerodynamic diameter ≤2.5 μm) accumulation center showed no abrupt changes with a shift in wind direction until the northerly wind jet arrived. |
topic |
Mountain-plain wind wind shear wind lidar |
url |
http://dx.doi.org/10.1080/16742834.2017.1368349 |
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