Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD029848 |
Surface Meteorological Conditions and Boundary Layer Height Variations During an Air Pollution Episode in Nanjing, China | |
Yin, J.1; Gao, C. Y.2; Hong, J.3; Gao, Z.1,4; Li, Y.1; Li, X.1; Fan, S.1; Zhu, B.1 | |
2019-03-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:6页码:3350-3364 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA; South Korea |
英文摘要 | The evolution of planetary boundary layer (PBL) was investigated using observations from a laser ceilometer, an eddy covariance system, and an automatic meteorological station in the north of Nanjing city during an air pollution episode in 2016-2017 winter. Based on 7-day observation under clean to polluted day, we recorded the temporal variations of backscatter signals observed by the ceilometer, and then intercompared the planetary boundary layer height (PBLH) retrieved from individual methods. The results show that backscatter signal gradient, standard deviation, and wavelet transform analysis methods generated similar PBLH values and PBL diurnal variation patterns. Moreover, the PBL structure varied diurnally, with distinct patterns corresponding to clean and polluted days. Based on these measurements, the relationships between PBLH, weather conditions, and contaminants were analyzed. Results show that on clean days, strong surface turbulence exchange makes the PBL fully developed and makes the PBLH increase sharply after sunrise, with a maximum of 1,483m; on polluted days, stable synoptic conditions and the weaker wind speeds facilitated the accumulation of air pollutants, leading to smaller net surface radiation and weaker turbulence. Consequently, these conditions during polluted days led to lower PBLH values, which were typically less than 900m. |
英文关键词 | planetary boundary layer height ceilometer retrieval algorithms air pollution Nanjing |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000464653500030 |
WOS关键词 | ENTRAINMENT ZONE THICKNESS ; EDDY-COVARIANCE ; RADIOSONDE MEASUREMENTS ; LIDAR MEASUREMENTS ; AEROSOL POLLUTION ; SOLAR-RADIATION ; MIXING-HEIGHT ; GROWTH-RATES ; IMPACT ; URBAN |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/181730 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Sch Atmospher Phys, Climate & Weather Disasters Collaborat Innovat Ct, Key Lab Aerosol Cloud Precipitat,China Meteorol A, Nanjing, Jiangsu, Peoples R China; 2.Columbia Univ, Dept Earth & Environm Sci, New York, NY USA; 3.Yonsei Univ, Dept Atmospher Sci, Seoul, South Korea; 4.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Yin, J.,Gao, C. Y.,Hong, J.,et al. Surface Meteorological Conditions and Boundary Layer Height Variations During an Air Pollution Episode in Nanjing, China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(6):3350-3364. |
APA | Yin, J..,Gao, C. Y..,Hong, J..,Gao, Z..,Li, Y..,...&Zhu, B..(2019).Surface Meteorological Conditions and Boundary Layer Height Variations During an Air Pollution Episode in Nanjing, China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(6),3350-3364. |
MLA | Yin, J.,et al."Surface Meteorological Conditions and Boundary Layer Height Variations During an Air Pollution Episode in Nanjing, China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.6(2019):3350-3364. |
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