Spatio-temporal variations in NO2 and SO2 over Shanghai and Chongming Eco-Island measured by Ozone Monitoring Instrument (OMI) during 2008–2017
Spatio-temporal variations in NO2 and SO2 over Shanghai and Chongming Eco-Island measured by Ozone Monitoring Instrument (OMI) during 2008–2017
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臭氧监测仪（OMI）2008—2017年上海和崇明生态岛NO2和SO2时空变化
DOI：
10.1016/j.jclepro.2020.120563
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发表时间：
2020-06
影响因子：
11.1
通讯作者：
Bin Zhou
中科院分区：
文献类型：
--
作者：
Ruibin Xue;Shanshan Wang;Danran Li;Zhong Zou;Ka Lok Chan;Pieter Valks;Alfonso Saiz-Lopez;Bin Zhou
高分辨率卫星地图有助于确定污染热点。利用OMI（Ozone Monitoring Instrument）的NO2和SO2观测数据，对上海及周边地区进行了空间分辨率为0.01° × 0.01°的平均和网格化处理。利用污染图研究了2008 - 2017年NO2和SO2的时空变化。上海对流层NO2和SO2柱的平均值分别为1.40 × 1016 molec·cm-2和1.21 × 1016 molec·cm-2。随着政府对改善空气质量的努力，近10年来，上海市NO2和SO2的浓度都有明显下降，分别下降了1.24%和1.56%。NO2和SO2时间序列也表现出明显的季节特征，冬季污染水平较高，夏季较低。受船舶和工业排放的影响，NO2和SO2的污染热点主要集中在上海市的北方地区，而南部和东部地区的污染水平较低。近10年来，上海市大部分地区NO2和SO2浓度呈下降趋势，但北方地区下降幅度最大（NO2浓度为1.4 × 1015 molec·cm-2·year-1，SO2浓度为3.0 × 1015 molec·cm-2·year-1）。与中国多分辨率排放清单（MEIC）的对比表明，NO2和SO2排放量下降的驱动因素主要是电力部门的减排和脱硫，以及工业部门的减排。我们还使用气溶胶光学厚度（AOD）的测量中分辨率成像光谱仪（MODIS）的气相污染物和二次气溶胶的形成之间的关系进行了研究。与SO2相比，NO2在上海市中心对二次气溶胶形成的贡献增大。虽然崇明生态岛近年来发展迅速，但SO2和NO2浓度均明显下降。这主要与严格的排放控制政策和完善的城市规划有关，表明在政策引导下，生态发展是可以实现的。
High resolution satellite maps are useful for the identification of pollution hotspots. In this work, nitrogen dioxide (NO2) and sulfur dioxide (SO2) observations from the Ozone Monitoring Instrument (OMI) have been averaged and gridded for Shanghai and surrounding areas with a spatial resolution of 0.01° × 0.01°. The pollution maps have been used to investigate the spatio-temporal variations in NO2and SO2from 2008 to 2017. The averaged tropospheric NO2and planetary boundary layer (PBL) SO2columns in Shanghai are on average 1.40 × 1016molec·cm−2and 1.21 × 1016molec·cm−2, respectively. As the government has put a lot of effort to improve the air quality, both the NO2and SO2columns reveal a significant decline in Shanghai during the past decade, with a reduction of ∼24% and ∼56%, respectively, which is also confirmed by the good agreement between satellite observations and ground-based in-situ measurements. The NO2and SO2time series also show distinct seasonal characteristics with higher pollution level during winter and lower in the summer. Due to the impact of ship and industrial emissions, the hotspots of NO2and SO2are concentrated in the northern part of Shanghai, while the pollution level is lower in the southern and eastern regions. Decreasing trends in NO2and SO2are found for most areas of Shanghai during the past decade, though the strongest decrease in the northern part of the city (1.4 × 1015molec·cm−2·year−1for NO2and 3.0 × 1015molec·cm−2·year−1for SO2). Comparisons with the China Multi-Resolution Emissions Inventory (MEIC) indicate that the driving factors for the decline of NO2and SO2are mainly denitration and desulfurization in the power sector, and the reduction of emissions in the industry sector. We also use aerosol optical depth (AOD) measurements from MODerate-resolution Imaging Spectroradiometer (MODIS) to investigate the relationship between gas phase pollutants and formation of secondary aerosol. Compared to SO2, the contribution of NO2to secondary aerosol formation increased in the central part of Shanghai. Although Chongming Eco-Island has developed rapidly in recent years, both the SO2and NO2levels decreased significantly. This is mainly related to the strict emission control policy and improved urban planning, and indicates that ecological development is achievable under the guidance of policies.
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DOI：
10.5194/acp-2018-1163-supplement
发表时间：
2018-12
期刊：
--
影响因子：
--
作者：
Junlan Feng;Yan Zhang;Shanshan Li;Jingbo Mao;A. Patton;Yuyan Zhou;Weichun Ma;Cong Liu;H. Ka
通讯作者：
Junlan Feng;Yan Zhang;Shanshan Li;Jingbo Mao;A. Patton;Yuyan Zhou;Weichun Ma;Cong Liu;H. Ka
影响因子：
4.6
作者：
de Foy B;Lu Z;Streets DG
通讯作者：
Streets DG
近十年中国SO2格局时空变化及驱动机制
影响因子：
6.3
作者：
Wang Ting;Wang Pucai;Theys Nicolas;Tong Dan;Hendrick Francois;Zhang Qiang;Van Roozendael Michel
通讯作者：
Van Roozendael Michel
影响因子：
5
作者：
Wang, Xinfeng;Wang, Wenxing;Wang, Zhe
通讯作者：
Wang, Zhe
DOI：
10.1073/pnas.1900125116
发表时间：
2019-04-30
影响因子：
11.1
作者：
An, Zhisheng;Huang, Ru-Jin;Ji, Yuemeng
通讯作者：
Ji, Yuemeng