Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-1185-2018 |
Ozone trends over the United States at different times of day | |
Yan, Yingying1; Lin, Jintai1; He, Cenlin2 | |
2018-01-30 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:2页码:1185-1202 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | In the United States, the decline of summertime daytime peak ozone in the last 20 years has been clearly connected to reductions in anthropogenic emissions. However, questions remain about how and through what mechanisms ozone at other times of day have changed over recent decades. Here we analyze the interannual variability and trends of ozone at different hours of day, using observations from about 1000 US sites during 1990-2014. We find a clear diurnal cycle both in the magnitude of ozone trends and in the relative importance of climate variability versus anthropogenic emissions to ozone changes. Interannual climate variability has mainly been associated with the detrended fluctuation in the US annual daytime ozone over 1990-2014, with a much smaller effect on the nighttime ozone. Reductions in anthropogenic emissions of nitrogen oxides have led to substantial growth in the US annual average nighttime ozone due to reduced ozone titration, while the summertime daytime ozone has declined. Environmental policymaking might consider further improvements to reduce ozone levels at night and other non-peak hours. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423723500003 |
WOS关键词 | ATLANTIC MULTIDECADAL OSCILLATION ; COMPARATIVE RISK-ASSESSMENT ; SURFACE OZONE ; TROPOSPHERIC OZONE ; AIR-QUALITY ; SUMMERTIME OZONE ; GLOBAL BURDEN ; NORTH-AMERICA ; SYSTEMATIC ANALYSIS ; ASIAN EMISSIONS |
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/30423 |
专题 | 地球科学 |
作者单位 | 1.Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Lab Climate & Ocean Atmosphere Studies, Beijing 100871, Peoples R China; 2.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Dept Atmospher & Ocean Sci, Los Angeles, CA USA |
推荐引用方式 GB/T 7714 | Yan, Yingying,Lin, Jintai,He, Cenlin. Ozone trends over the United States at different times of day[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(2):1185-1202. |
APA | Yan, Yingying,Lin, Jintai,&He, Cenlin.(2018).Ozone trends over the United States at different times of day.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(2),1185-1202. |
MLA | Yan, Yingying,et al."Ozone trends over the United States at different times of day".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.2(2018):1185-1202. |
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