Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-12071-2017 |
Typical meteorological conditions associated with extreme nitrogen dioxide (NO2) pollution events over Scandinavia | |
Thomas, Manu Anna; Devasthale, Abhay | |
2017-10-12 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:19 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden |
英文摘要 | Characterizing typical meteorological conditions associated with extreme pollution events helps to better understand the role of local meteorology in governing the transport and distribution of pollutants in the atmosphere. The knowledge of their co-variability could further help to evaluate and constrain chemistry transport models. Hence, in this study, we investigate the statistical linkages between extreme nitrogen dioxide (NO2) pollution events and meteorology over Scandinavia using observational and reanalysis data. It is observed that the south-westerly winds dominated during extreme events, accounting for 50-65% of the total events depending on the season, while the second largest annual occurrence was from south-easterly winds, accounting for 17% of total events. The specific humidity anomalies showed an influx of warmer and moisture-laden air masses over Scandinavia in the free troposphere. Two distinct modes in the persistency of circulation patterns are observed. The first mode lasts for 1-2 days, dominated by south-easterly winds that prevailed during 78% of total extreme events in that mode, while the second mode lasted for 3-5 days, dominated by south-westerly winds that prevailed during 86% of the events. The combined analysis of circulation patterns, their persistency, and associated changes in humidity and clouds suggests that NO2 extreme events over Scandinavia occur mainly due to long-range transport from the southern latitudes. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000412824300001 |
WOS关键词 | RETRIEVAL ALGORITHM ; COLUMN RETRIEVAL ; CARBON-MONOXIDE ; TRANSPORT ; EMISSIONS ; OZONE ; IMPACT ; STATES |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/30431 |
专题 | 地球科学 |
作者单位 | Swedish Meteorol & Hydrol Inst, Res & Dev Dept, Folkborgsvagen 17, S-60176 Norrkoping, Sweden |
推荐引用方式 GB/T 7714 | Thomas, Manu Anna,Devasthale, Abhay. Typical meteorological conditions associated with extreme nitrogen dioxide (NO2) pollution events over Scandinavia[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(19). |
APA | Thomas, Manu Anna,&Devasthale, Abhay.(2017).Typical meteorological conditions associated with extreme nitrogen dioxide (NO2) pollution events over Scandinavia.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(19). |
MLA | Thomas, Manu Anna,et al."Typical meteorological conditions associated with extreme nitrogen dioxide (NO2) pollution events over Scandinavia".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.19(2017). |
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