{"id":"https://openalex.org/W3108036401","doi":"https://doi.org/10.3390/rs12233939","title":"Investigating the Impacts of the COVID-19 Lockdown on Trace Gases Using Ground-Based MAX-DOAS Observations in Nanjing, China","display_name":"Investigating the Impacts of the COVID-19 Lockdown on Trace Gases Using Ground-Based MAX-DOAS Observations in Nanjing, China","publication_year":2020,"publication_date":"2020-12-01","ids":{"openalex":"https://openalex.org/W3108036401","doi":"https://doi.org/10.3390/rs12233939","mag":"3108036401"},"language":"en","primary_location":{"id":"doi:10.3390/rs12233939","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs12233939","pdf_url":"https://www.mdpi.com/2072-4292/12/23/3939/pdf?version=1607181963","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2072-4292/12/23/3939/pdf?version=1607181963","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5019593272","display_name":"Zeeshan Javed","orcid":"https://orcid.org/0000-0003-0684-1970"},"institutions":[{"id":"https://openalex.org/I200845125","display_name":"Nanjing University of Information Science and Technology","ror":"https://ror.org/02y0rxk19","country_code":"CN","type":"education","lineage":["https://openalex.org/I200845125"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zeeshan Javed","raw_affiliation_strings":["Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China"],"affiliations":[{"raw_affiliation_string":"Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China","institution_ids":["https://openalex.org/I200845125"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100449572","display_name":"Yuhang Wang","orcid":"https://orcid.org/0009-0006-4590-6166"},"institutions":[{"id":"https://openalex.org/I130701444","display_name":"Georgia Institute of Technology","ror":"https://ror.org/01zkghx44","country_code":"US","type":"education","lineage":["https://openalex.org/I130701444"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Yuhang Wang","raw_affiliation_strings":["School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA"],"affiliations":[{"raw_affiliation_string":"School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA","institution_ids":["https://openalex.org/I130701444"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010139910","display_name":"Mingjie Xie","orcid":"https://orcid.org/0000-0002-2717-7557"},"institutions":[{"id":"https://openalex.org/I200845125","display_name":"Nanjing University of Information Science and Technology","ror":"https://ror.org/02y0rxk19","country_code":"CN","type":"education","lineage":["https://openalex.org/I200845125"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Mingjie Xie","raw_affiliation_strings":["Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China"],"affiliations":[{"raw_affiliation_string":"Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China","institution_ids":["https://openalex.org/I200845125"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5006552323","display_name":"Aimon Tanvir","orcid":"https://orcid.org/0009-0007-5855-3133"},"institutions":[{"id":"https://openalex.org/I24943067","display_name":"Fudan University","ror":"https://ror.org/013q1eq08","country_code":"CN","type":"education","lineage":["https://openalex.org/I24943067"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Aimon Tanvir","raw_affiliation_strings":["Department of Environmental Science &amp; Engineering, Fudan University, Shanghai 200433, China"],"affiliations":[{"raw_affiliation_string":"Department of Environmental Science &amp; Engineering, Fudan University, Shanghai 200433, China","institution_ids":["https://openalex.org/I24943067"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5080039662","display_name":"Abdul Rehman","orcid":"https://orcid.org/0000-0001-7809-5124"},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Abdul Rehman","raw_affiliation_strings":["CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China"],"affiliations":[{"raw_affiliation_string":"CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China","institution_ids":["https://openalex.org/I126520041"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5041081583","display_name":"Xiangguang Ji","orcid":null},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]},{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210134251","display_name":"Anhui Institute of Optics and Fine Mechanics","ror":"https://ror.org/03bzbv419","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I2802624667","https://openalex.org/I4210134251"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiangguang Ji","raw_affiliation_strings":["Key Lab of Environmental Optics &amp; Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China","School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, China"],"affiliations":[{"raw_affiliation_string":"Key Lab of Environmental Optics &amp; Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China","institution_ids":["https://openalex.org/I4210134251","https://openalex.org/I19820366"]},{"raw_affiliation_string":"School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, China","institution_ids":["https://openalex.org/I126520041"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5040345688","display_name":"Chengzhi Xing","orcid":"https://orcid.org/0000-0002-0265-2358"},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210134251","display_name":"Anhui Institute of Optics and Fine Mechanics","ror":"https://ror.org/03bzbv419","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I2802624667","https://openalex.org/I4210134251"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chengzhi Xing","raw_affiliation_strings":["Key Lab of Environmental Optics &amp; Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China"],"affiliations":[{"raw_affiliation_string":"Key Lab of Environmental Optics &amp; Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China","institution_ids":["https://openalex.org/I4210134251","https://openalex.org/I19820366"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084161394","display_name":"Awais Shakoor","orcid":"https://orcid.org/0000-0001-9273-4500"},"institutions":[{"id":"https://openalex.org/I15766328","display_name":"Universitat de Lleida","ror":"https://ror.org/050c3cw24","country_code":"ES","type":"education","lineage":["https://openalex.org/I15766328"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Awais Shakoor","raw_affiliation_strings":["Department of Environment and Soil Sciences, University of Lleida, Avinguda Alcalde Rovira Roure 191, 25198 Lleida, Spain"],"affiliations":[{"raw_affiliation_string":"Department of Environment and Soil Sciences, University of Lleida, Avinguda Alcalde Rovira Roure 191, 25198 Lleida, Spain","institution_ids":["https://openalex.org/I15766328"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100384302","display_name":"Cheng Liu","orcid":"https://orcid.org/0000-0002-3759-9219"},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]},{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210119653","display_name":"Institute of Urban Environment","ror":"https://ror.org/025gq5q04","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210119653"]},{"id":"https://openalex.org/I4210134251","display_name":"Anhui Institute of Optics and Fine Mechanics","ror":"https://ror.org/03bzbv419","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I2802624667","https://openalex.org/I4210134251"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Cheng Liu","raw_affiliation_strings":["Anhui Province Key Laboratory of Polar Environment and Global Change, University of Science and Technology of China, Hefei 230026, China","Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China","Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China","Key Lab of Environmental Optics &amp; Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China"],"affiliations":[{"raw_affiliation_string":"Anhui Province Key Laboratory of Polar Environment and Global Change, University of Science and Technology of China, Hefei 230026, China","institution_ids":["https://openalex.org/I126520041"]},{"raw_affiliation_string":"Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China","institution_ids":["https://openalex.org/I4210119653","https://openalex.org/I19820366"]},{"raw_affiliation_string":"Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China","institution_ids":["https://openalex.org/I126520041"]},{"raw_affiliation_string":"Key Lab of Environmental Optics &amp; Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China","institution_ids":["https://openalex.org/I4210134251","https://openalex.org/I19820366"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":9,"corresponding_author_ids":["https://openalex.org/A5100449572"],"corresponding_institution_ids":["https://openalex.org/I130701444"],"apc_list":{"value":2500,"currency":"CHF","value_usd":2707},"apc_paid":{"value":2500,"currency":"CHF","value_usd":2707},"fwci":1.5414,"has_fulltext":true,"cited_by_count":19,"citation_normalized_percentile":{"value":0.83980325,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":98},"biblio":{"volume":"12","issue":"23","first_page":"3939","last_page":"3939"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12916","display_name":"COVID-19 impact on air quality","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12916","display_name":"COVID-19 impact on air quality","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10190","display_name":"Air Quality and Health Impacts","score":0.9987999796867371,"subfield":{"id":"https://openalex.org/subfields/2307","display_name":"Health, Toxicology and Mutagenesis"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12120","display_name":"Air Quality Monitoring and Forecasting","score":0.9976000189781189,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/trace-gas","display_name":"Trace gas","score":0.8460870981216431},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.7215912938117981},{"id":"https://openalex.org/keywords/nitrogen-dioxide","display_name":"Nitrogen dioxide","score":0.626251220703125},{"id":"https://openalex.org/keywords/air-quality-index","display_name":"Air quality index","score":0.6173037886619568},{"id":"https://openalex.org/keywords/air-pollutants","display_name":"Air pollutants","score":0.5971147418022156},{"id":"https://openalex.org/keywords/ozone","display_name":"Ozone","score":0.5775781869888306},{"id":"https://openalex.org/keywords/coronavirus-disease-2019","display_name":"Coronavirus disease 2019 (COVID-19)","score":0.48609209060668945},{"id":"https://openalex.org/keywords/air-pollution","display_name":"Air pollution","score":0.48494675755500793},{"id":"https://openalex.org/keywords/sulfur-dioxide","display_name":"Sulfur dioxide","score":0.46131017804145813},{"id":"https://openalex.org/keywords/pollutant","display_name":"Pollutant","score":0.44172734022140503},{"id":"https://openalex.org/keywords/formaldehyde","display_name":"Formaldehyde","score":0.43047207593917847},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.42233315110206604},{"id":"https://openalex.org/keywords/atmospheric-sciences","display_name":"Atmospheric sciences","score":0.40286439657211304},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.1442900002002716},{"id":"https://openalex.org/keywords/chemistry","display_name":"Chemistry","score":0.11623302102088928},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.10264554619789124}],"concepts":[{"id":"https://openalex.org/C130047971","wikidata":"https://www.wikidata.org/wiki/Q289382","display_name":"Trace gas","level":2,"score":0.8460870981216431},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.7215912938117981},{"id":"https://openalex.org/C2780723490","wikidata":"https://www.wikidata.org/wiki/Q207895","display_name":"Nitrogen dioxide","level":2,"score":0.626251220703125},{"id":"https://openalex.org/C126314574","wikidata":"https://www.wikidata.org/wiki/Q2364111","display_name":"Air quality index","level":2,"score":0.6173037886619568},{"id":"https://openalex.org/C2987853052","wikidata":"https://www.wikidata.org/wiki/Q131123","display_name":"Air pollutants","level":3,"score":0.5971147418022156},{"id":"https://openalex.org/C508106653","wikidata":"https://www.wikidata.org/wiki/Q36933","display_name":"Ozone","level":2,"score":0.5775781869888306},{"id":"https://openalex.org/C3008058167","wikidata":"https://www.wikidata.org/wiki/Q84263196","display_name":"Coronavirus disease 2019 (COVID-19)","level":4,"score":0.48609209060668945},{"id":"https://openalex.org/C559116025","wikidata":"https://www.wikidata.org/wiki/Q131123","display_name":"Air pollution","level":2,"score":0.48494675755500793},{"id":"https://openalex.org/C2780447027","wikidata":"https://www.wikidata.org/wiki/Q5282","display_name":"Sulfur dioxide","level":2,"score":0.46131017804145813},{"id":"https://openalex.org/C82685317","wikidata":"https://www.wikidata.org/wiki/Q19829510","display_name":"Pollutant","level":2,"score":0.44172734022140503},{"id":"https://openalex.org/C2775930285","wikidata":"https://www.wikidata.org/wiki/Q161210","display_name":"Formaldehyde","level":2,"score":0.43047207593917847},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.42233315110206604},{"id":"https://openalex.org/C91586092","wikidata":"https://www.wikidata.org/wiki/Q757520","display_name":"Atmospheric sciences","level":1,"score":0.40286439657211304},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.1442900002002716},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.11623302102088928},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.10264554619789124},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C179104552","wikidata":"https://www.wikidata.org/wiki/Q11165","display_name":"Inorganic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C524204448","wikidata":"https://www.wikidata.org/wiki/Q788926","display_name":"Infectious disease (medical specialty)","level":3,"score":0.0},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.0},{"id":"https://openalex.org/C2779134260","wikidata":"https://www.wikidata.org/wiki/Q12136","display_name":"Disease","level":2,"score":0.0}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.3390/rs12233939","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs12233939","pdf_url":"https://www.mdpi.com/2072-4292/12/23/3939/pdf?version=1607181963","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},{"id":"pmh:oai:dnet:raudl_______::cf5779be588e2eba46f9d27a04fb6a3d","is_oa":true,"landing_page_url":"http://hdl.handle.net/10459.1/70100","pdf_url":null,"source":{"id":"https://openalex.org/S4306402641","display_name":"LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Cient\u00edficas)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4383465926","host_organization_name":"LA Referencia","host_organization_lineage":["https://openalex.org/I4383465926"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:doaj.org/article:f94735bc491d446d982db62b61914d01","is_oa":true,"landing_page_url":"https://doaj.org/article/f94735bc491d446d982db62b61914d01","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Remote Sensing, Vol 12, Iss 23, p 3939 (2020)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2072-4292/12/23/3939/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/rs12233939","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Remote Sensing; Volume 12; Issue 23; Pages: 3939","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/rs12233939","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs12233939","pdf_url":"https://www.mdpi.com/2072-4292/12/23/3939/pdf?version=1607181963","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Good health and well-being","score":0.7200000286102295,"id":"https://metadata.un.org/sdg/3"}],"awards":[{"id":"https://openalex.org/G2087396116","display_name":null,"funder_award_id":"China","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G2090740980","display_name":null,"funder_award_id":"4170155","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G2533058635","display_name":null,"funder_award_id":"41701551","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G3317480652","display_name":null,"funder_award_id":"Science","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4878241122","display_name":null,"funder_award_id":"(NSFC, 41701551, 41605117, 41771291)","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5994120800","display_name":null,"funder_award_id":"Natural","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6847669252","display_name":null,"funder_award_id":"NSFC, 41701551, 41605117, 41771291","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G757172692","display_name":null,"funder_award_id":"41605117","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7940796049","display_name":null,"funder_award_id":"41771291","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G848032724","display_name":null,"funder_award_id":"Science","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"}],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"},{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320332181","display_name":"National Oceanic and Atmospheric Administration","ror":"https://ror.org/02z5nhe81"},{"id":"https://openalex.org/F4320337720","display_name":"National Centers for Environmental Information","ror":"https://ror.org/04r0wrp59"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3108036401.pdf","grobid_xml":"https://content.openalex.org/works/W3108036401.grobid-xml"},"referenced_works_count":43,"referenced_works":["https://openalex.org/W790468901","https://openalex.org/W799185526","https://openalex.org/W1885686156","https://openalex.org/W1965121024","https://openalex.org/W1986190691","https://openalex.org/W1992006743","https://openalex.org/W2003587931","https://openalex.org/W2032465471","https://openalex.org/W2040387404","https://openalex.org/W2057305337","https://openalex.org/W2109103034","https://openalex.org/W2135397123","https://openalex.org/W2145857138","https://openalex.org/W2150319985","https://openalex.org/W2156530953","https://openalex.org/W2164474809","https://openalex.org/W2166148764","https://openalex.org/W2186583709","https://openalex.org/W2289259437","https://openalex.org/W2330678854","https://openalex.org/W2409430606","https://openalex.org/W2494491134","https://openalex.org/W2512215358","https://openalex.org/W2600245048","https://openalex.org/W2791847934","https://openalex.org/W2801831834","https://openalex.org/W2914017751","https://openalex.org/W2917387033","https://openalex.org/W2953752926","https://openalex.org/W2954369306","https://openalex.org/W2968122772","https://openalex.org/W3015781063","https://openalex.org/W3016121467","https://openalex.org/W3016605542","https://openalex.org/W3018697538","https://openalex.org/W3019057975","https://openalex.org/W3020476281","https://openalex.org/W3021727730","https://openalex.org/W3022606748","https://openalex.org/W3022684765","https://openalex.org/W3023188389","https://openalex.org/W3027709318","https://openalex.org/W6775769633"],"related_works":["https://openalex.org/W2407143315","https://openalex.org/W293384396","https://openalex.org/W2149845415","https://openalex.org/W1543350042","https://openalex.org/W1966402381","https://openalex.org/W4401485509","https://openalex.org/W4300849454","https://openalex.org/W1977082177","https://openalex.org/W3024353146","https://openalex.org/W4399338999"],"abstract_inverted_index":{"The":[0,37,78,140,178,291],"spread":[1],"of":[2,27,34,72,84,97,148,169,199,268,278,289,294],"the":[3,11,25,28,31,53,68,82,101,146,159,167,186,226,241,247,266,276,279],"COVID-19":[4],"pandemic":[5],"and":[6,62,75,130,163,189,208],"consequent":[7],"lockdowns":[8],"all":[9],"over":[10],"world":[12],"have":[13],"had":[14],"various":[15],"impacts":[16],"on":[17,30],"atmospheric":[18],"quality.":[19],"This":[20],"study":[21,179],"aimed":[22],"to":[23,51,91,108,117,126,136,240,296],"investigate":[24],"impact":[26],"lockdown":[29,103,113,122,132,160,190,273,280],"air":[32,156,193,227],"quality":[33,157,194],"Nanjing,":[35],"China.":[36],"off-axis":[38],"measurements":[39],"from":[40,87],"state-of-the-art":[41],"remote-sensing":[42],"Multi-Axis":[43],"Differential":[44],"Optical":[45],"Absorption":[46],"Spectroscope":[47],"(MAX-DOAS)":[48],"were":[49,151],"used":[50],"observe":[52],"trace":[54,201],"gases,":[55,202],"i.e.,":[56,100,203,275],"Formaldehyde":[57],"(HCHO),":[58],"Nitrogen":[59],"Dioxide":[60,64],"(NO2),":[61],"Sulfur":[63],"(SO2),":[65],"along":[66,153],"with":[67,154,165,195,216,265],"in-situ":[69],"time":[70],"series":[71],"NO2,":[73],"SO2":[74,209],"Ozone":[76],"(O3).":[77],"total":[79],"dataset":[80],"covers":[81],"span":[83],"five":[85],"months,":[86],"1":[88],"December":[89,106],"2019,":[90,107],"10":[92,137],"May":[93,138],"2020,":[94,116,125,135],"which":[95,171,237],"comprises":[96],"four":[98],"phases,":[99],"pre":[102],"phase":[104],"(1":[105,133],"23":[109],"January":[110,115],"2020),":[111,120,129],"Phase-1":[112],"(24":[114],"26":[118],"February":[119,124],"Phase-2":[121,234,262],"(27":[123],"31":[127],"March":[128],"post":[131],"April":[134],"2020).":[139],"observed":[141,260,292],"results":[142,215,223],"clearly":[143],"showed":[144,172,298],"that":[145,181,225,299],"concentrations":[147],"selected":[149,200],"pollutants":[150,228],"lower":[152],"improved":[155,192],"during":[158,176,185,233,261,285],"periods":[161],"(Phase-1":[162],"Phase-2)":[164],"only":[166],"exception":[168],"O3,":[170],"an":[173],"increasing":[174],"trend":[175],"lockdown.":[177],"concluded":[180],"limited":[182,308],"anthropogenic":[183],"activities":[184],"spring":[187],"festival":[188],"phases":[191],"a":[196,255,269,286],"significant":[197,256],"reduction":[198,230,258],"NO2":[204,297],"59%,":[205],"HCHO":[206,295],"38%,":[207],"33%.":[210],"We":[211],"also":[212],"compared":[213],"our":[214],"2019":[217,232],"data":[218],"for":[219],"available":[220],"gases.":[221],"Our":[222],"imply":[224],"concentration":[229],"in":[231,251,263,272,282],"was":[235,238,259],"insignificant,":[236],"due":[239],"business":[242],"as":[243],"usual":[244],"conditions":[245,274],"after":[246],"Spring":[248],"Festival":[249],"(Phase-1)":[250],"2019.":[252],"In":[253],"contrast,":[254],"contamination":[257],"2020":[264],"enforcement":[267],"Level-II":[270],"response":[271],"easing":[277],"situation":[281],"some":[283],"sectors":[284],"specific":[287],"interval":[288],"time.":[290],"ratio":[293],"tropospheric":[300],"ozone":[301],"production":[302],"involved":[303],"Volatile":[304],"Organic":[305],"Compounds":[306],"(VOC)":[307],"scenarios.":[309]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":5},{"year":2021,"cited_by_count":6}],"updated_date":"2026-04-10T15:06:20.359241","created_date":"2020-12-07T00:00:00"}
