Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031725 |
Clustering Surface Ozone Diurnal Cycles to Understand the Impact of Circulation Patterns in Houston, TX | |
Bernier, Claudia1; Wang, Yuxuan1; Estes, Mark2; Lei, Ruixue1,3; Jia, Beixi4; Wang, Sing-Chun1; Sun, Jiajia1 | |
2019-12-04 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | The diurnal cycle of surface ozone is directly influenced by the chemistry and meteorological processes which affect a region. This study uniquely employs a clustering methodology to examine the complete diurnal pattern of surface ozone for the Houston-Galveston-Brazoria region and links the identified patterns to meteorological regimes for June, July, and August of 3 years (2011, 2014, and 2015). Four features were implemented into the clustering algorithm: ozone rate of decrease at night, daily minimum before sunrise, rate of increase after sunrise, and an average of afternoon ozone. Four clusters were chosen, ranging from a mostly flat diurnal pattern with low mixing ratios (20 ppbv) throughout the day (Cluster 1), to a more variable diurnal cycle with very high mixing ratios (>70 ppbv) in the afternoon (Cluster 4). The clusters are found to associate with distinctive circulation patterns and well-known regional meteorological processes, such as the low-level jet and Bermuda High. The uneven distribution of the clusters between the years helps elucidate ozone interannual variability due to meteorology: Cluster 4 had 0 days assigned from 2014 due to the greater influence of circulation patterns bringing clean air from the Gulf of Mexico. We show that the clustering method better characterizes ozone variability than the simplistic method of dividing peak ozone into quantiles. With the clustering analysis, we demonstrate that the ozone diurnal pattern holds more value than just peak ozone hours of the day in providing a clearer understanding of ozone variability and associated meteorological processes. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000500402700001 |
WOS关键词 | EASTERN UNITED-STATES ; LOW-LEVEL JETS ; VARIABILITY ; CLIMATOLOGY ; DROUGHT ; WINDS |
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/225835 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Houston, Dept Earth & Atmospher Sci, Houston, TX USA; 2.Texas Commiss Environm Qual, Austin, TX USA; 3.Penn State Univ, Dept Meteorol & Atmospher Sci, University Pk, PA 16802 USA; 4.China Meteorol Adm, CMA Publ Meteorol Serv Ctr, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Bernier, Claudia,Wang, Yuxuan,Estes, Mark,et al. Clustering Surface Ozone Diurnal Cycles to Understand the Impact of Circulation Patterns in Houston, TX[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019. |
APA | Bernier, Claudia.,Wang, Yuxuan.,Estes, Mark.,Lei, Ruixue.,Jia, Beixi.,...&Sun, Jiajia.(2019).Clustering Surface Ozone Diurnal Cycles to Understand the Impact of Circulation Patterns in Houston, TX.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES. |
MLA | Bernier, Claudia,et al."Clustering Surface Ozone Diurnal Cycles to Understand the Impact of Circulation Patterns in Houston, TX".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2019). |
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