Trends of Planetary Boundary Layer Height Over Urban Cities of China From 1980–2018
Boundary layer height (BLH) is an important parameter in climatology and air pollution research, especially in urban city. We calculated the BLH with a bulk Richardson number (Ri) method over urban cities of China during 1980–2018 using European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-...
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2021-09-01
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Online Access: | https://www.frontiersin.org/articles/10.3389/fenvs.2021.744255/full |
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doaj-210a91ff40384fa8bf24b312059623d62021-09-16T04:56:23ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2021-09-01910.3389/fenvs.2021.744255744255Trends of Planetary Boundary Layer Height Over Urban Cities of China From 1980–2018Yanfeng Huo0Yanfeng Huo1Yanfeng Huo2Yonghong Wang3Yonghong Wang4Pauli Paasonen5Quan Liu6Guiqian Tang7Yuanyuan Ma8Tuukka Petaja9Veli-Matti Kerminen10Markku Kulmala11Anhui Institute of Meteorological Sciences, Key Laboratory for Atmospheric Sciences & Remote Sensing of Anhui Province, Hefei, ChinaShouxian National Climate Observatory, Shouxian, ChinaHuaihe River Basin Typical Farmland Ecological Meteorological Field Science Experiment Base of China Meteorological Administration, Shouxian, ChinaResearch Center for Eco-Environmental Sciences, Chinese Academy of Science, Beijing, ChinaInstitute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, FinlandInstitute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, FinlandBeijing Weather Modification Office, Beijing Meteorological Bureau, Beijing, ChinaInstitute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, ChinaResearch Center for Eco-Environmental Sciences, Chinese Academy of Science, Beijing, ChinaResearch Center for Eco-Environmental Sciences, Chinese Academy of Science, Beijing, ChinaResearch Center for Eco-Environmental Sciences, Chinese Academy of Science, Beijing, ChinaBoundary layer height (BLH) is an important parameter in climatology and air pollution research, especially in urban city. We calculated the BLH with a bulk Richardson number (Ri) method over urban cities of China during 1980–2018 using European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-interim data after carefully validation with sounding data obtained from two meteorology stations in eastern China during 2010–2018. The values of BLH between these two types of data have correlation coefficients in the range of 0.65–0.87, which indicates that it is reasonable to analyze long-term trends of the BLH from ERA data sets. Using ERA-interim calculated BLH, we found that there is an increasing trend in the daytime BLH in most cities of eastern China, particularly during the spring season. A correlation analysis between the BLH and temperature, wind speed, relative humidity and visibility revealed that the variability in meteorological parameters, as well as in aerosol concentrations over highly polluted eastern China, play important roles in the development of the BLH.https://www.frontiersin.org/articles/10.3389/fenvs.2021.744255/fullboundary layer heightaerosolvisibilitytrendmeteorology parameter |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yanfeng Huo Yanfeng Huo Yanfeng Huo Yonghong Wang Yonghong Wang Pauli Paasonen Quan Liu Guiqian Tang Yuanyuan Ma Tuukka Petaja Veli-Matti Kerminen Markku Kulmala |
spellingShingle |
Yanfeng Huo Yanfeng Huo Yanfeng Huo Yonghong Wang Yonghong Wang Pauli Paasonen Quan Liu Guiqian Tang Yuanyuan Ma Tuukka Petaja Veli-Matti Kerminen Markku Kulmala Trends of Planetary Boundary Layer Height Over Urban Cities of China From 1980–2018 Frontiers in Environmental Science boundary layer height aerosol visibility trend meteorology parameter |
author_facet |
Yanfeng Huo Yanfeng Huo Yanfeng Huo Yonghong Wang Yonghong Wang Pauli Paasonen Quan Liu Guiqian Tang Yuanyuan Ma Tuukka Petaja Veli-Matti Kerminen Markku Kulmala |
author_sort |
Yanfeng Huo |
title |
Trends of Planetary Boundary Layer Height Over Urban Cities of China From 1980–2018 |
title_short |
Trends of Planetary Boundary Layer Height Over Urban Cities of China From 1980–2018 |
title_full |
Trends of Planetary Boundary Layer Height Over Urban Cities of China From 1980–2018 |
title_fullStr |
Trends of Planetary Boundary Layer Height Over Urban Cities of China From 1980–2018 |
title_full_unstemmed |
Trends of Planetary Boundary Layer Height Over Urban Cities of China From 1980–2018 |
title_sort |
trends of planetary boundary layer height over urban cities of china from 1980–2018 |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Environmental Science |
issn |
2296-665X |
publishDate |
2021-09-01 |
description |
Boundary layer height (BLH) is an important parameter in climatology and air pollution research, especially in urban city. We calculated the BLH with a bulk Richardson number (Ri) method over urban cities of China during 1980–2018 using European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-interim data after carefully validation with sounding data obtained from two meteorology stations in eastern China during 2010–2018. The values of BLH between these two types of data have correlation coefficients in the range of 0.65–0.87, which indicates that it is reasonable to analyze long-term trends of the BLH from ERA data sets. Using ERA-interim calculated BLH, we found that there is an increasing trend in the daytime BLH in most cities of eastern China, particularly during the spring season. A correlation analysis between the BLH and temperature, wind speed, relative humidity and visibility revealed that the variability in meteorological parameters, as well as in aerosol concentrations over highly polluted eastern China, play important roles in the development of the BLH. |
topic |
boundary layer height aerosol visibility trend meteorology parameter |
url |
https://www.frontiersin.org/articles/10.3389/fenvs.2021.744255/full |
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