TY  - JOUR
TI  - Analysis of the tropospheric column nitrogen dioxide over China based on satellite observations during 2008–2017
AB  - This study presents an analysis of the atmospheric column nitrogen dioxide ($NO_2$) over China during 2008–2017.Measurements of $NO_2$ columns obtained from the Ozone Monitoring Instrument (OMI) are used to investigatethe temporal and spatial dynamics of $NO_2$. Temporal and spatial distributions of $NO_2$obtained from OMI overChina from 2008 to 2017 are presented, and annual changes and trends in the seasonal cycle are shown. Theannual mean $NO_2$ columns are found to decrease 13% from 2008 to 2017. $NO_2$ shows significant cyclical seasonal characteristics over China, with maximum values in winter and minimum in summer. In addition, thespatial distribution is unbalanced, the Beijing-Tianjin-Hebei (Jing-Jin-Ji) region, the Yangtze River Delta regionand the Pearl River Delta region are found to be highly polluted areas, the NO2 columns in these regions havebeen declining by 17.6%, 24.5% and 16.7% during 2008–2017 respectively. Yearly variations in the $NO_2$ columns over the four major economic plates are prominent, and there is a maximum in the eastern region and aminimum in the western region during the past decade, these four regions show a downward trend in recentyears. Three areas and six groups are important pollution regions, and the $NO_2$ columns over these regions alsoshow decrease trend.
AU  - WANG, Litao
AU  - Zhou, Yi
AU  - LIU, Wenliang
AU  - WANG, Shixin
AU  - ZHU, Jinfeng
AU  - HOU, Yanfang
DO  - 10.1016/j.apr.2018.11.003
PY  - 2019
JO  - Atmospheric Pollution Research
VL  - 10
IS  - 2
SN  - 1309-1042
SP  - 651
EP  - 655
DB  - TRDizin
UR  - http://search/yayin/detay/382592
ER  -