PMID- 31708978 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201101 IS - 1680-8584 (Print) IS - 2071-1409 (Electronic) IS - 1680-8584 (Linking) VI - 18 IP - 9 DP - 2019 Nov TI - Regional characteristics of NO(2) column densities from Pandora observations during the MAPS-Seoul campaign. PG - 2207-2219 LID - 10.4209/aaqr.2017.09.0341 [doi] AB - Vertical column density (VCD) of nitrogen dioxide (NO2) was measured using Pandora spectrometers at six sites on the Korean Peninsula during the Megacity Air Pollution Studies-Seoul (MAPS-Seoul) campaign from May to June 2015. To estimate the tropospheric NO(2) VCD, the stratospheric NO(2) VCD from the Ozone Monitoring Instrument (OMI) was subtracted from the total NO(2) VCD from Pandora. European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis wind data was used to analyze variations in tropospheric NO(2) VCD caused by wind patterns at each site. The Yonsei/SEO site was found to have the largest tropospheric NO(2) VCD (1.49 DU on average) from a statistical analysis of hourly tropospheric NO(2) VCD measurements. At rural sites, remarkably low NO(2) VCDs were observed. However, a wind field analysis showed that trans-boundary transport and emissions from domestic sources lead to an increase in tropospheric NO(2) VCD at NIER/BYI and KMA/AMY, respectively. At urban sites, high NO(2) VCD values were observed under conditions of low wind speed, which were influenced by local urban emissions. Tropospheric NO(2) VCD at HUFS/Yongin increases under conditions of significant transport from urban area of Seoul according to a correlation analysis that considers the transport time lag. Significant diurnal variations were found at urban sites during the MAPS-Seoul campaign, but not at rural sites, indicating that it is associated with diurnal patterns of NO(2) emissions from dense traffic. FAU - Chong, Heesung AU - Chong H AD - Department of Atmospheric Sciences, Yonsei University, Seoul, South Korea. FAU - Lee, Hana AU - Lee H AD - Department of Atmospheric Sciences, Yonsei University, Seoul, South Korea. FAU - Koo, Ja-Ho AU - Koo JH AD - Department of Atmospheric Sciences, Yonsei University, Seoul, South Korea. FAU - Kim, Jhoon AU - Kim J AD - Department of Atmospheric Sciences, Yonsei University, Seoul, South Korea. AD - Harvard - Smithsonian Center for Astrophysics, Cambridge, Massachusetts, USA. FAU - Jeong, Ukkyo AU - Jeong U AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. FAU - Kim, Woogyung AU - Kim W AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. FAU - Kim, Sang-Woo AU - Kim SW AD - School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea. FAU - Herman, Jay R AU - Herman JR AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. FAU - Abuhassan, Nader K AU - Abuhassan NK AD - NASA Goddard Space Flight Center, Greenbelt, Maryland, USA. FAU - Ahn, Junyoung AU - Ahn J AD - National Institute of Environmental Research,Incheon,South Korea. FAU - Park, Jeong-Hoo AU - Park JH AD - National Institute of Environmental Research,Incheon,South Korea. FAU - Kim, Sang-Kyun AU - Kim SK AD - National Institute of Environmental Research,Incheon,South Korea. FAU - Moon, Kyung-Jung AU - Moon KJ AD - National Institute of Environmental Research,Incheon,South Korea. FAU - Choi, Won-Jun AU - Choi WJ AD - National Institute of Environmental Research,Incheon,South Korea. FAU - Park, Sang Seo AU - Park SS AD - School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea. LA - eng GR - Goddard Space Flight Center NASA/United States PT - Journal Article PL - China (Republic : 1949- ) TA - Aerosol Air Qual Res JT - Aerosol and air quality research JID - 101585748 PMC - PMC6839696 MID - NIHMS1501892 OTO - NOTNLM OT - MAPS-Seoul OT - NO2 OT - Pandora EDAT- 2019/11/12 06:00 MHDA- 2019/11/12 06:01 PMCR- 2020/11/01 CRDT- 2019/11/12 06:00 PHST- 2019/11/12 06:00 [entrez] PHST- 2019/11/12 06:00 [pubmed] PHST- 2019/11/12 06:01 [medline] PHST- 2020/11/01 00:00 [pmc-release] AID - 10.4209/aaqr.2017.09.0341 [doi] PST - ppublish SO - Aerosol Air Qual Res. 2019 Nov;18(9):2207-2219. doi: 10.4209/aaqr.2017.09.0341.