Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-20-1483-2020 |
Effect of changing NOx lifetime on the seasonality and long-term trends of satellite-observed tropospheric NO2 columns over China | |
Shah, Viral1; Jacob, Daniel J.1,2; Li, Ke1; Silvern, Rachel F.2; Zhai, Shixian1; Liu, Mengyao3; Lin, Jintai3; Zhang, Qiang4 | |
2020-02-07 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
![]() |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2020 |
卷号 | 20期号:3页码:1483-1495 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | Satellite observations of tropospheric NO2 columns are extensively used to infer trends in anthropogenic emissions of nitrogen oxides (NOx equivalent to NO+NO2), but this may be complicated by trends in NOx lifetime. Here we use 2004-2018 observations from the Ozone Monitoring Instrument (OMI) satellite-based instrument (QA4ECV and POMINO v2 retrievals) to examine the seasonality and trends of tropospheric NO2 columns over central-eastern China, and we interpret the results with the GEOS-Chem chemical transport model. The observations show a factor of 3 increase in NO2 columns from summer to winter, which we explain in GEOS-Chem as reflecting a longer NOx lifetime in winter than in summer (21 h versus 5.9 h in 2017). The 2005-2018 summer trends of OMI NO2 closely follow the trends in the Multi-resolution Emission Inventory for China (MEIC), with a rise over the 2005-2011 period and a 25 % decrease since. We find in GEOS-Chem no significant trend of the NOx lifetime in summer, supporting the emission trend reported by the MEIC. The winter trend of OMI NO2 is steeper than in summer over the entire period, which we attribute to a decrease in NOx lifetime at lower NOx emissions. Half of the NOx sink in winter is from N2O5 hydrolysis, which counterintuitively becomes more efficient as NOx emissions decrease due to less titration of ozone at night. The formation of organic nitrates also becomes an increasing sink of NOx as NOx emissions decrease but emissions of volatile organic compounds (VOCs) do not. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000513068100001 |
WOS关键词 | NITROUS-ACID HONO ; HETEROGENEOUS N2O5 UPTAKE ; ANTHROPOGENIC EMISSIONS ; OMI OBSERVATIONS ; POWER-PLANTS ; OZONE ; DIOXIDE ; POLLUTION ; SPACE ; RESOLUTION |
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/278604 |
专题 | 地球科学 |
作者单位 | 1.Harvard Univ, Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA; 2.Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA; 3.Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Lab Climate & Ocean Atmosphere Studies, Beijing, Peoples R China; 4.Tsinghua Univ, Dept Earth Syst Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Shah, Viral,Jacob, Daniel J.,Li, Ke,et al. Effect of changing NOx lifetime on the seasonality and long-term trends of satellite-observed tropospheric NO2 columns over China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(3):1483-1495. |
APA | Shah, Viral.,Jacob, Daniel J..,Li, Ke.,Silvern, Rachel F..,Zhai, Shixian.,...&Zhang, Qiang.(2020).Effect of changing NOx lifetime on the seasonality and long-term trends of satellite-observed tropospheric NO2 columns over China.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(3),1483-1495. |
MLA | Shah, Viral,et al."Effect of changing NOx lifetime on the seasonality and long-term trends of satellite-observed tropospheric NO2 columns over China".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.3(2020):1483-1495. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论