{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,13]],"date-time":"2026-03-13T19:44:10Z","timestamp":1773431050182,"version":"3.50.1"},"reference-count":48,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2019,7,24]],"date-time":"2019-07-24T00:00:00Z","timestamp":1563926400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004663","name":"Ministry of Science and Technology, Taiwan","doi-asserted-by":"publisher","award":["MOST 107-2111-M-00l-001-MY2"],"award-info":[{"award-number":["MOST 107-2111-M-00l-001-MY2"]}],"id":[{"id":"10.13039\/501100004663","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Intense economic and industrial development in China has been accompanied by severe local air pollution, as well as in other downwind countries in East Asia. This study analyzes satellite observational data of sulfur dioxide (SO2), nitrogen dioxide (NO2), and aerosol optical depth (AOD) to explore the spatial distribution, long-term temporal variation, and correlation to meteorological conditions over this region over the period 2005\u20132015. SO2 and NO2 data are retrieved from the ozone monitoring instrument (OMI) onboard the National Aeronautics and Space Administration (NASA) Aura satellite, while AOD data are from the moderate-resolution imaging spectroradiometer (MODIS) onboard the NASA Aqua satellite. Spatial distributions of SO2, NO2, and AOD show the highest levels in the North China Plain (NCP), with hotspots also in Southeastern China (SC) and the Sichuan Basin (SB). Biomass burning also contributes to a high level of AOD in Southeast Asia in spring and in Equatorial Asia in fall. Considering the correlation of pollutant levels to meteorological conditions, monitoring data show that higher temperature and higher relative humidity (RH) favor the conversion of SO2 and NO2 to sulfate and nitrate aerosol, respectively. The impact of stronger lower tropospheric stability facilitates the accumulation of SO2 and NO2 in NCP and SC. Transport of SO2 and NO2 from intense source regions to relatively clean regions is highly influential over East Asia; such transport from the NCP leads to a considerable increase of pollutants in SC, SB, Taiwan Island (TW), and Taiwan Strait (TWS), particularly in winter. Aerosols generated by biomass burning in Southeast Asia and anthropogenic aerosol in SC are transported to TW and TWS and lead to the increase of AOD, with the highest levels of AOD in SC, TW, and TWS occurring in spring. Precipitation results in the removal of pollutants, especially in highly polluted regions, the effect of which is most significant in winter and spring.<\/jats:p>","DOI":"10.3390\/rs11151738","type":"journal-article","created":{"date-parts":[[2019,7,24]],"date-time":"2019-07-24T10:48:19Z","timestamp":1563965299000},"page":"1738","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":51,"title":["Satellite-Derived Correlation of SO2, NO2, and Aerosol Optical Depth with Meteorological Conditions over East Asia from 2005 to 2015"],"prefix":"10.3390","volume":"11","author":[{"given":"Chin-An","family":"Lin","sequence":"first","affiliation":[{"name":"Research Center for Environmental Changes, Academia Sinica, Taipei 11529, Taiwan"},{"name":"Department of Atmospheric and Environmental Sciences, University at Albany, State University of New York, Albany, NY 12222, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7997-8578","authenticated-orcid":false,"given":"Yi-Chun","family":"Chen","sequence":"additional","affiliation":[{"name":"Research Center for Environmental Changes, Academia Sinica, Taipei 11529, Taiwan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1725-4405","authenticated-orcid":false,"given":"Chian-Yi","family":"Liu","sequence":"additional","affiliation":[{"name":"Center for Space and Remote Sensing Research, National Central University, Chungli 32001, Taiwan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9292-0933","authenticated-orcid":false,"given":"Wei-Ting","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Atmospheric Sciences, National Taiwan University, Taipei 10617, Taiwan"}]},{"given":"John H.","family":"Seinfeld","sequence":"additional","affiliation":[{"name":"Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA"}]},{"given":"Charles C.-K.","family":"Chou","sequence":"additional","affiliation":[{"name":"Research Center for Environmental Changes, Academia Sinica, Taipei 11529, Taiwan"}]}],"member":"1968","published-online":{"date-parts":[[2019,7,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"9839","DOI":"10.5194\/acp-11-9839-2011","article-title":"Sulfur dioxide and primary carbonaceous aerosol emissions in China and India, 1996\u20132010","volume":"11","author":"Lu","year":"2011","journal-title":"Atmos. Chem. Phys. Discuss."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"363","DOI":"10.1016\/S1352-2310(99)00167-3","article-title":"Present and future emissions of air pollutants in China","volume":"34","author":"Streets","year":"2000","journal-title":"Atmos. Environ."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"13299","DOI":"10.5194\/acp-15-13299-2015","article-title":"High-resolution inventory of technologies, activities, and emissions of coal-fired power plants in China from 1990 to 2010","volume":"15","author":"Liu","year":"2015","journal-title":"Atmos. Chem. Phys. Discuss."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.atmosenv.2015.12.056","article-title":"Atmospheric emission inventory of hazardous air pollutants from China\u2019s cement plants: Temporal trends, spatial variation characteristics and scenario projections","volume":"128","author":"Hua","year":"2016","journal-title":"Atmos. Environ."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Azimi, M., Feng, F., and Yang, Y. (2018). Air Pollution Inequality and Its Sources in SO2 and NOX Emissions among Chinese Provinces from 2006 to 2015. Sustainability, 10.","DOI":"10.3390\/su10020367"},{"key":"ref_6","unstructured":"Seinfeld, J.H., and Pandis, S.N. (2016). Atmospheric Chemistry and Physics: From Air Pollution to Climate Change, John Wiley Sons. [3rd ed.]."},{"key":"ref_7","unstructured":"USEPA (2012). Our Nation\u2019s Air Status and Trends Through 2010."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"7508","DOI":"10.1016\/j.atmosenv.2008.05.049","article-title":"Implications of the chemical transformation of Asian outflow aerosols for the long-range transport of inorganic nitrogen species","volume":"42","author":"Chou","year":"2008","journal-title":"Atmos. Environ."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"403","DOI":"10.1016\/j.atmosenv.2012.06.049","article-title":"Impact of different transport mechanisms of Asian dust and anthropogenic pollutants to Taiwan","volume":"60","author":"Lin","year":"2012","journal-title":"Atmos. Environ."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"23","DOI":"10.1016\/j.atmosenv.2015.03.005","article-title":"Long-range transport of air pollutants originating in China: A possible major cause of multi-day high-PM10 episodes during cold season in Seoul, Korea","volume":"109","author":"Oh","year":"2015","journal-title":"Atmos. Environ."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Naja, M., and Akimoto, H. (2004). Contribution of regional pollution and long-range transport to the Asia-Pacific region: Analysis of long-term ozonesonde data over Japan. J. Geophys. Res. Space Phys., 109.","DOI":"10.1029\/2004JD004687"},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Lin, M., Fiore, A.M., Horowitz, L.W., Cooper, O.R., Naik, V., Holloway, J., Johnson, B.J., Middlebrook, A.M., Oltmans, S.J., and Pollack, I.B. (2012). Transport of Asian ozone pollution into surface air over the western United States in spring, J. Geophys. Res. 117, D00V07.","DOI":"10.1029\/2011JD016961"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1736","DOI":"10.1073\/pnas.1312860111","article-title":"China\u2019s international trade and air pollution in the United States","volume":"111","author":"Lin","year":"2014","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1029\/2007JD009349","article-title":"A satellite-based assessment of transpacific transport of pollution aerosol","volume":"113","author":"Yu","year":"2008","journal-title":"J. Geophys. Res."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"2999","DOI":"10.5194\/acp-8-2999-2008","article-title":"Analysis of aircraft and satellite measurements from the Intercontinental Chemical Transport Experiment (INTEX-B) to quantify long-range transport of East Asian sulfur to Canada","volume":"8","author":"Martin","year":"2008","journal-title":"Atmos. Chem. Phys. Discuss."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"4605","DOI":"10.5194\/acp-16-4605-2016","article-title":"Aura OMI observations of regional SO2 and NO2 pollution changes from 2005 to 2015","volume":"16","author":"Krotkov","year":"2016","journal-title":"Atmos. Chem. Phys. Discuss."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"13993","DOI":"10.1021\/es4039648","article-title":"Ozone Monitoring Instrument Observations of Interannual Increases in SO2 Emissions from Indian Coal-Fired Power Plants during 2005\u20132012","volume":"47","author":"Lu","year":"2013","journal-title":"Environ. Sci. Technol."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"4145","DOI":"10.5194\/acp-13-4145-2013","article-title":"Long-term changes of tropospheric NO2 over megacities derived from multiple satellite instruments","volume":"13","author":"Hilboll","year":"2013","journal-title":"Atmos. Chem. Phys. Discuss."},{"key":"ref_19","first-page":"26555","article-title":"Aura OMI observations of regional SO2 and NO2 pollution changes from 2005 to 2014","volume":"15","author":"Krotkov","year":"2015","journal-title":"Atmos. Chem. Phys. Discuss."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"130","DOI":"10.1016\/j.atmosenv.2015.03.055","article-title":"US NO2 trends (2005\u20132013): EPA Air Quality System (AQS) data versus improved observations from the Ozone Monitoring Instrument (OMI)","volume":"110","author":"Lamsal","year":"2015","journal-title":"Atmos. Environ."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"151","DOI":"10.1016\/j.atmosenv.2016.11.067","article-title":"Spatial and temporal evaluation of long term trend (2005\u20132014) of OMI retrieved NO2 and SO2 concentrations in Henan Province, China","volume":"154","author":"Zhang","year":"2017","journal-title":"Atmos. Environ."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"12197","DOI":"10.5194\/acp-12-12197-2012","article-title":"Trends in OMI NO2 observations over the United States: Effects of emission control technology and the economic recession","volume":"12","author":"Russell","year":"2012","journal-title":"Atmos. Chem. Phys. Discuss."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1775","DOI":"10.5194\/acp-17-1775-2017","article-title":"Cleaning up the air: Effectiveness of air quality policy for SO2 and NOx emissions in China","volume":"17","author":"Mijling","year":"2017","journal-title":"Atmos. Chem. Phys. Discuss."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"453","DOI":"10.1016\/j.atmosenv.2013.05.012","article-title":"Impact of national NOx and SO2 control policies on particulate matter pollution in China","volume":"77","author":"Zhao","year":"2013","journal-title":"Atmos. Environ."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"301","DOI":"10.1002\/ijch.199400034","article-title":"The Conversion of SO2 to Sulfate in the Atmosphere","volume":"34","author":"Eatough","year":"1994","journal-title":"Isr. J. Chem."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"675","DOI":"10.1016\/S0045-6535(02)00391-0","article-title":"Atmospheric conversion of sulfur dioxide to particulate sulfate and nitrogen dioxide to particulate nitrate and gaseous nitric acid in an urban area","volume":"49","author":"Khoder","year":"2002","journal-title":"Chemosphere"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"1633","DOI":"10.1016\/j.chemosphere.2005.02.003","article-title":"Impacts of some meteorological parameters on SO2 and TSP concentrations in Erzurum, Turkey","volume":"59","author":"Nuhoglu","year":"2005","journal-title":"Chemosphere"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"3596","DOI":"10.1016\/j.atmosenv.2009.03.049","article-title":"The sensitivity of OMI-derived nitrogen dioxide to boundary layer temperature inversions","volume":"43","author":"Wallace","year":"2009","journal-title":"Atmos. Environ."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"139","DOI":"10.5562\/cca1966","article-title":"Monthly and Seasonal Variations of NO2, SO2 and Black-smoke Located Within the Sport District in Urban Area, City of Split, Croatia","volume":"85","author":"Buljac","year":"2012","journal-title":"Croat. Chem. Acta"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"1093","DOI":"10.1109\/TGRS.2006.872333","article-title":"The ozone monitoring instrument","volume":"44","author":"Malkki","year":"2006","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"6314","DOI":"10.1002\/2013GL058134","article-title":"A fast and sensitive new satellite SO2 retrieval algorithm based on principal component analysis: Application to the ozone monitoring instrument","volume":"40","author":"Li","year":"2013","journal-title":"Geophys. Res. Lett."},{"key":"ref_32","unstructured":"KNMI (2015, August 05). Background Information about the Row Anomaly in OMI. Available online: https:\/\/projects.knmi.nl\/omi\/research\/product\/rowanomaly-background.php."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1905","DOI":"10.5194\/amt-4-1905-2011","article-title":"An improved tropospheric NO2 column retrieval algorithm for the Ozone Monitoring Instrument","volume":"4","author":"Boersma","year":"2011","journal-title":"Atmos. Meas. Tech."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"2989","DOI":"10.5194\/amt-6-2989-2013","article-title":"The Collection 6 MODIS aerosol products over land and ocean","volume":"6","author":"Mattoo","year":"2013","journal-title":"Atmos. Meas. Tech."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"1634","DOI":"10.1016\/j.atmosenv.2006.10.044","article-title":"Seasonal and monthly variations of columnar aerosol optical properties over east Asia determined from multi-year MODIS, LIDAR, and AERONET Sun\/sky radiometer measurements","volume":"41","author":"Kim","year":"2007","journal-title":"Atmos. Environ."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1029\/2012JD017915","article-title":"Satellite observation of regional haze pollution over the North China Plain","volume":"117","author":"Tao","year":"2012","journal-title":"J. Geophys. Res. Space Phys."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"947","DOI":"10.1175\/JAS3385.1","article-title":"The MODIS Aerosol Algorithm, Products, and Validation","volume":"62","author":"Remer","year":"2005","journal-title":"J. Atmos. Sci."},{"key":"ref_38","doi-asserted-by":"crossref","unstructured":"Gebremichael, G., and Hossain, F. (2010). The TRMM Multi-Satellite Precipitation Analysis (TMPA). Satellite Rainfall Applications for Surface Hydrology, Springer.","DOI":"10.1007\/978-90-481-2915-7"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1965","DOI":"10.1175\/1520-0450(2001)040<1965:TSOTTR>2.0.CO;2","article-title":"The Status of the Tropical Rainfall Measuring Mission (TRMM) after Two Years in Orbit","volume":"39","author":"Kummerow","year":"2000","journal-title":"J. Appl. Meteorol."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"553","DOI":"10.1002\/qj.828","article-title":"The ERA-Interim reanalysis: Configuration and performance of the data assimilation system","volume":"137","author":"Dee","year":"2011","journal-title":"Q. J. R. Meteorol. Soc."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"252","DOI":"10.1016\/j.atmosenv.2015.03.048","article-title":"Heavy aerosol loading over the Bohai Bay as revealed by ground and satellite remote sensing","volume":"124","author":"Zhang","year":"2016","journal-title":"Atmos. Environ."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"19245","DOI":"10.1029\/96JD03003","article-title":"Chemical and size effects of hygroscopic aerosols on light scattering coefficients","volume":"101","author":"Tang","year":"1996","journal-title":"J. Geophys. Res. Space Phys."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"1162","DOI":"10.1016\/j.asr.2010.06.025","article-title":"Monitoring spatio-temporal variations in aerosols and aerosol-cloud interactions over Pakistan using MODIS data","volume":"46","author":"Alam","year":"2010","journal-title":"Adv. Space Res."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"1000","DOI":"10.1016\/j.scitotenv.2016.11.025","article-title":"A review of biomass burning: Emissions and impacts on air quality, health and climate in China","volume":"579","author":"Chen","year":"2017","journal-title":"Sci. Total Environ."},{"key":"ref_45","first-page":"230","article-title":"SO2 Emission Control and Finding a Way Out to Produce Sulphuric Acid from Industrial SO2 Emission","volume":"6","author":"Roy","year":"2015","journal-title":"J. Chem. Eng. Process Technol."},{"key":"ref_46","first-page":"3","article-title":"STL: A seasonal-trend decomposition procedure based on loess","volume":"6","author":"Cleveland","year":"1990","journal-title":"J. Off. Stat."},{"key":"ref_47","first-page":"169","article-title":"[New Capabilities and Methods of the X-12-ARIMA Seasonal-Adjustment Program]: Reply","volume":"16","author":"Findley","year":"1998","journal-title":"J. Bus. Econ. Stat."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1029\/2010GL042594","article-title":"Recent large reduction in sulfur dioxide emissions from Chinese power plants observed by the Ozone Monitoring Instrument","volume":"37","author":"Li","year":"2010","journal-title":"Geophys. Res. Lett."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/11\/15\/1738\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T13:08:55Z","timestamp":1760188135000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/11\/15\/1738"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,7,24]]},"references-count":48,"journal-issue":{"issue":"15","published-online":{"date-parts":[[2019,8]]}},"alternative-id":["rs11151738"],"URL":"https:\/\/doi.org\/10.3390\/rs11151738","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,7,24]]}}}