{"id":"https://openalex.org/W4387056848","doi":"https://doi.org/10.3390/rs15194689","title":"Retrieval of Tropospheric NO2 Vertical Column Densities from Ground-Based MAX-DOAS Measurements in Lhasa, a City on the Tibetan Plateau","display_name":"Retrieval of Tropospheric NO2 Vertical Column Densities from Ground-Based MAX-DOAS Measurements in Lhasa, a City on the Tibetan Plateau","publication_year":2023,"publication_date":"2023-09-25","ids":{"openalex":"https://openalex.org/W4387056848","doi":"https://doi.org/10.3390/rs15194689"},"language":"en","primary_location":{"id":"doi:10.3390/rs15194689","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs15194689","pdf_url":"https://www.mdpi.com/2072-4292/15/19/4689/pdf?version=1695634125","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/2072-4292/15/19/4689/pdf?version=1695634125","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101099453","display_name":"Siyang Cheng","orcid":null},"institutions":[{"id":"https://openalex.org/I4210133131","display_name":"Chinese Academy of Meteorological Sciences","ror":"https://ror.org/034b53w38","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210133131"]},{"id":"https://openalex.org/I4210088164","display_name":"Changchun Institute of Optics, Fine Mechanics and Physics","ror":"https://ror.org/012rct222","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210088164"]},{"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"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Siyang Cheng","raw_affiliation_strings":["Shigatse National Climate Observatory, Shigatse 857000, China","State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China","State Key Laboratory of Severe Weather & Institute of Tibetan Plateau Meteorology, Chinese Academy of Meteorological Sciences, Beijing 100081, China"],"affiliations":[{"raw_affiliation_string":"Shigatse National Climate Observatory, Shigatse 857000, China","institution_ids":[]},{"raw_affiliation_string":"State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China","institution_ids":["https://openalex.org/I4210088164","https://openalex.org/I19820366"]},{"raw_affiliation_string":"State Key Laboratory of Severe Weather & Institute of Tibetan Plateau Meteorology, Chinese Academy of Meteorological Sciences, Beijing 100081, China","institution_ids":["https://openalex.org/I4210133131"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5092945527","display_name":"Guijuan Pu","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Guijuan Pu","raw_affiliation_strings":["Tibet Institute of Plateau Atmospheric and Environmental Sciences, Lhasa 850000, China"],"affiliations":[{"raw_affiliation_string":"Tibet Institute of Plateau Atmospheric and Environmental Sciences, Lhasa 850000, China","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101605228","display_name":"Jianzhong Ma","orcid":"https://orcid.org/0000-0002-9510-5432"},"institutions":[{"id":"https://openalex.org/I4210133131","display_name":"Chinese Academy of Meteorological Sciences","ror":"https://ror.org/034b53w38","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210133131"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Jianzhong Ma","raw_affiliation_strings":["State Key Laboratory of Severe Weather & Institute of Tibetan Plateau Meteorology, Chinese Academy of Meteorological Sciences, Beijing 100081, China"],"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Severe Weather & Institute of Tibetan Plateau Meteorology, Chinese Academy of Meteorological Sciences, Beijing 100081, China","institution_ids":["https://openalex.org/I4210133131"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101153866","display_name":"Hyunkee Hong","orcid":null},"institutions":[{"id":"https://openalex.org/I64946176","display_name":"National Institute of Environmental Research","ror":"https://ror.org/02xhmzq41","country_code":"KR","type":"government","lineage":["https://openalex.org/I64946176"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Hyunkee Hong","raw_affiliation_strings":["National Institute of Environmental Research, Incheon 22689, Republic of Korea"],"affiliations":[{"raw_affiliation_string":"National Institute of Environmental Research, Incheon 22689, Republic of Korea","institution_ids":["https://openalex.org/I64946176"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5026694185","display_name":"Jun Du","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Jun Du","raw_affiliation_strings":["Shigatse National Climate Observatory, Shigatse 857000, China","Tibet Institute of Plateau Atmospheric and Environmental Sciences, Lhasa 850000, China"],"affiliations":[{"raw_affiliation_string":"Shigatse National Climate Observatory, Shigatse 857000, China","institution_ids":[]},{"raw_affiliation_string":"Tibet Institute of Plateau Atmospheric and Environmental Sciences, Lhasa 850000, China","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5092945528","display_name":"Tseten Yudron","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Tseten Yudron","raw_affiliation_strings":["Tibet Institute of Plateau Atmospheric and Environmental Sciences, Lhasa 850000, China"],"affiliations":[{"raw_affiliation_string":"Tibet Institute of Plateau Atmospheric and Environmental Sciences, Lhasa 850000, China","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5057840118","display_name":"Thomas Wagner","orcid":"https://orcid.org/0000-0003-0468-0966"},"institutions":[{"id":"https://openalex.org/I4210113422","display_name":"Max Planck Institute for Chemistry","ror":"https://ror.org/02f5b7n18","country_code":"DE","type":"facility","lineage":["https://openalex.org/I149899117","https://openalex.org/I4210113422"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Thomas Wagner","raw_affiliation_strings":["Max Planck Institute for Chemistry, 55020 Mainz, Germany"],"affiliations":[{"raw_affiliation_string":"Max Planck Institute for Chemistry, 55020 Mainz, Germany","institution_ids":["https://openalex.org/I4210113422"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":7,"corresponding_author_ids":["https://openalex.org/A5101605228"],"corresponding_institution_ids":["https://openalex.org/I4210133131"],"apc_list":{"value":2500,"currency":"CHF","value_usd":2707},"apc_paid":{"value":2500,"currency":"CHF","value_usd":2707},"fwci":0.9918,"has_fulltext":true,"cited_by_count":8,"citation_normalized_percentile":{"value":0.72500879,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":97,"max":98},"biblio":{"volume":"15","issue":"19","first_page":"4689","last_page":"4689"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12120","display_name":"Air Quality Monitoring and Forecasting","score":0.9976999759674072,"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"}},"topics":[{"id":"https://openalex.org/T12120","display_name":"Air Quality Monitoring and Forecasting","score":0.9976999759674072,"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"}},{"id":"https://openalex.org/T10190","display_name":"Air Quality and Health Impacts","score":0.9973999857902527,"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/T12916","display_name":"COVID-19 impact on air quality","score":0.9966999888420105,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/troposphere","display_name":"Troposphere","score":0.8339128494262695},{"id":"https://openalex.org/keywords/atmospheric-sciences","display_name":"Atmospheric sciences","score":0.7446905970573425},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.6925188899040222},{"id":"https://openalex.org/keywords/differential-optical-absorption-spectroscopy","display_name":"Differential optical absorption spectroscopy","score":0.6877932548522949},{"id":"https://openalex.org/keywords/plateau","display_name":"Plateau (mathematics)","score":0.5865695476531982},{"id":"https://openalex.org/keywords/altitude","display_name":"Altitude (triangle)","score":0.5555979609489441},{"id":"https://openalex.org/keywords/nitrogen-dioxide","display_name":"Nitrogen dioxide","score":0.5197808146476746},{"id":"https://openalex.org/keywords/diurnal-temperature-variation","display_name":"Diurnal temperature variation","score":0.5092593431472778},{"id":"https://openalex.org/keywords/ozone-monitoring-instrument","display_name":"Ozone Monitoring Instrument","score":0.47492533922195435},{"id":"https://openalex.org/keywords/daytime","display_name":"Daytime","score":0.4722432792186737},{"id":"https://openalex.org/keywords/morning","display_name":"Morning","score":0.45256689190864563},{"id":"https://openalex.org/keywords/seasonality","display_name":"Seasonality","score":0.44989272952079773},{"id":"https://openalex.org/keywords/ground-level","display_name":"Ground level","score":0.42816030979156494},{"id":"https://openalex.org/keywords/wind-speed","display_name":"Wind speed","score":0.41707509756088257},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.3969634175300598},{"id":"https://openalex.org/keywords/climatology","display_name":"Climatology","score":0.3426254391670227},{"id":"https://openalex.org/keywords/absorption","display_name":"Absorption (acoustics)","score":0.19375833868980408},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.16255885362625122},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.10664108395576477},{"id":"https://openalex.org/keywords/ground-floor","display_name":"Ground floor","score":0.07601144909858704}],"concepts":[{"id":"https://openalex.org/C9075549","wikidata":"https://www.wikidata.org/wiki/Q40631","display_name":"Troposphere","level":2,"score":0.8339128494262695},{"id":"https://openalex.org/C91586092","wikidata":"https://www.wikidata.org/wiki/Q757520","display_name":"Atmospheric sciences","level":1,"score":0.7446905970573425},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.6925188899040222},{"id":"https://openalex.org/C194072897","wikidata":"https://www.wikidata.org/wiki/Q1224441","display_name":"Differential optical absorption spectroscopy","level":3,"score":0.6877932548522949},{"id":"https://openalex.org/C2780030769","wikidata":"https://www.wikidata.org/wiki/Q4968575","display_name":"Plateau (mathematics)","level":2,"score":0.5865695476531982},{"id":"https://openalex.org/C6350597","wikidata":"https://www.wikidata.org/wiki/Q339495","display_name":"Altitude (triangle)","level":2,"score":0.5555979609489441},{"id":"https://openalex.org/C2780723490","wikidata":"https://www.wikidata.org/wiki/Q207895","display_name":"Nitrogen dioxide","level":2,"score":0.5197808146476746},{"id":"https://openalex.org/C167678106","wikidata":"https://www.wikidata.org/wiki/Q5283759","display_name":"Diurnal temperature variation","level":2,"score":0.5092593431472778},{"id":"https://openalex.org/C2779118152","wikidata":"https://www.wikidata.org/wiki/Q1863449","display_name":"Ozone Monitoring Instrument","level":3,"score":0.47492533922195435},{"id":"https://openalex.org/C162725370","wikidata":"https://www.wikidata.org/wiki/Q52643","display_name":"Daytime","level":2,"score":0.4722432792186737},{"id":"https://openalex.org/C19720800","wikidata":"https://www.wikidata.org/wiki/Q7722","display_name":"Morning","level":2,"score":0.45256689190864563},{"id":"https://openalex.org/C125403950","wikidata":"https://www.wikidata.org/wiki/Q2111082","display_name":"Seasonality","level":2,"score":0.44989272952079773},{"id":"https://openalex.org/C3017984891","wikidata":"https://www.wikidata.org/wiki/Q5610943","display_name":"Ground level","level":3,"score":0.42816030979156494},{"id":"https://openalex.org/C161067210","wikidata":"https://www.wikidata.org/wiki/Q1464943","display_name":"Wind speed","level":2,"score":0.41707509756088257},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.3969634175300598},{"id":"https://openalex.org/C49204034","wikidata":"https://www.wikidata.org/wiki/Q52139","display_name":"Climatology","level":1,"score":0.3426254391670227},{"id":"https://openalex.org/C125287762","wikidata":"https://www.wikidata.org/wiki/Q1758948","display_name":"Absorption (acoustics)","level":2,"score":0.19375833868980408},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.16255885362625122},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.10664108395576477},{"id":"https://openalex.org/C2992074223","wikidata":"https://www.wikidata.org/wiki/Q831691","display_name":"Ground floor","level":2,"score":0.07601144909858704},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C170154142","wikidata":"https://www.wikidata.org/wiki/Q150737","display_name":"Architectural engineering","level":1,"score":0.0},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/rs15194689","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs15194689","pdf_url":"https://www.mdpi.com/2072-4292/15/19/4689/pdf?version=1695634125","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:doaj.org/article:44da576438db47ca849627af8232028b","is_oa":true,"landing_page_url":"https://doaj.org/article/44da576438db47ca849627af8232028b","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","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Remote Sensing, Vol 15, Iss 19, p 4689 (2023)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2072-4292/15/19/4689/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/rs15194689","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","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/rs15194689","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs15194689","pdf_url":"https://www.mdpi.com/2072-4292/15/19/4689/pdf?version=1695634125","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":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320306101","display_name":"National Aeronautics and Space Administration","ror":"https://ror.org/027ka1x80"},{"id":"https://openalex.org/F4320326584","display_name":"National Institute of Environmental Research","ror":"https://ror.org/02xhmzq41"}],"has_content":{"grobid_xml":false,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4387056848.pdf"},"referenced_works_count":40,"referenced_works":["https://openalex.org/W1992006743","https://openalex.org/W2027404493","https://openalex.org/W2032465471","https://openalex.org/W2062587020","https://openalex.org/W2072856420","https://openalex.org/W2082562995","https://openalex.org/W2109103034","https://openalex.org/W2109738210","https://openalex.org/W2110885569","https://openalex.org/W2133534295","https://openalex.org/W2135397123","https://openalex.org/W2301615472","https://openalex.org/W2319217430","https://openalex.org/W2417541264","https://openalex.org/W2517291409","https://openalex.org/W2756935395","https://openalex.org/W2868505999","https://openalex.org/W2888198871","https://openalex.org/W2908065128","https://openalex.org/W2910536555","https://openalex.org/W2917444991","https://openalex.org/W2955778325","https://openalex.org/W2963444860","https://openalex.org/W2969580756","https://openalex.org/W3002860750","https://openalex.org/W3033069661","https://openalex.org/W3121575235","https://openalex.org/W3129014038","https://openalex.org/W3137870016","https://openalex.org/W3166324638","https://openalex.org/W3182259500","https://openalex.org/W3182590831","https://openalex.org/W3210627245","https://openalex.org/W4205096484","https://openalex.org/W4210422017","https://openalex.org/W4280588209","https://openalex.org/W4313400073","https://openalex.org/W4323318156","https://openalex.org/W4327960906","https://openalex.org/W4361009207"],"related_works":["https://openalex.org/W2144175534","https://openalex.org/W4231505922","https://openalex.org/W2355904150","https://openalex.org/W2023829132","https://openalex.org/W2203680429","https://openalex.org/W2071646714","https://openalex.org/W1997961745","https://openalex.org/W2095655213","https://openalex.org/W2350613134","https://openalex.org/W4312807252"],"abstract_inverted_index":{"In":[0],"order":[1],"to":[2,62,141,161,250,334,348],"investigate":[3],"the":[4,15,19,28,41,66,84,95,105,111,119,142,150,153,174,181,190,194,205,213,220,238,246,264,273,276,281,290,301,306,309,316,336,350,356],"abundance":[5],"of":[6,31,86,121,145,197,226,242,256,275,338,352],"and":[7,17,27,136,176,200,263,292,347,362],"temporal":[8],"variation":[9,123,295],"in":[10,14,36,124,128,134,157,170,202,296,300,345],"nitrogen":[11],"dioxide":[12],"(NO2)":[13],"troposphere":[16],"validate":[18],"corresponding":[20],"satellite":[21,265,353],"products":[22,354],"during":[23,149,180,219,280],"a":[24,38,267,328],"normal":[25],"year":[26,303],"lockdown":[29,183,283],"period":[30],"coronavirus":[32],"disease":[33],"2019":[34],"(COVID-19)":[35],"Lhasa,":[37,203],"city":[39],"on":[40,110,212,269,341],"Tibetan":[42],"Plateau":[43],"(TP),":[44],"ground-based":[45,251,261,321],"remote-sensing":[46],"measurements":[47],"captured":[48],"by":[49,320],"applying":[50],"multi-axis":[51],"differential":[52,76],"optical":[53],"absorption":[54],"spectroscopy":[55],"(MAX-DOAS)":[56],"were":[57,81,102,209],"recorded":[58],"from":[59,83],"August":[60],"2021":[61],"March":[63],"2023":[64],"at":[65,90],"Lhasa":[67,129,158,346],"site":[68],"(91.14\u00b0E,":[69],"29.66\u00b0N;":[70],"3552.5":[71],"m":[72],"altitude).":[73],"The":[74,185,223,253,285],"NO2":[75,97,114,126,147,154,172,198,207,228,258,270,298,342],"slant":[77],"column":[78,99],"densities":[79,100],"(dSCDs)":[80],"retrieved":[82,112],"spectra":[85],"scattered":[87],"solar":[88],"light":[89],"different":[91],"elevation":[92],"angles.":[93],"Then,":[94],"tropospheric":[96,113,125,146,171,206,227,257,297],"vertical":[98],"(VCDs)":[101],"calculated":[103],"with":[104,237,272,358],"geometric":[106],"approximation":[107],"method.":[108],"Based":[109],"VCDs,":[115,173],"we":[116],"found":[117],"that":[118],"pattern":[120],"monthly":[122,143,254,277],"VCDs":[127,148,208,229,259,299],"presented":[130],"two":[131],"peaks,":[132],"one":[133,137],"winter":[135],"around":[138],"May.":[139],"According":[140],"means":[144],"COVID-19":[151,182,221,282,307],"lockdown,":[152,308],"background":[155,343],"level":[156],"was":[159,193,230],"estimated":[160],"be":[162],"0.53":[163],"\u00d7":[164,312,324],"1015":[165,313,325],"molecules\u00b7cm\u22122.":[166],"For":[167],"diurnal":[168,294],"variations":[169],"morning":[175],"evening":[177],"peaks":[178],"disappeared":[179],"period.":[184,284],"east\u2013west":[186],"direction":[187,215],"(i.e.,":[188],"along":[189],"river":[191],"valley)":[192],"main":[195],"path":[196],"transport":[199],"dispersion":[201],"but":[204],"little":[210],"dependent":[211],"wind":[214,217],"or":[216],"speed":[218],"lockdown.":[222],"correlation":[224],"coefficient":[225],"R":[231],"=":[232,235],"0.33":[233],"(R":[234],"0.43),":[236],"averaged":[239],"relative":[240,249],"deviation":[241],"\u221228%":[243],"(99%)":[244],"for":[245],"TROPOMI":[247],"(GEMS)":[248],"MAX-DOAS.":[252],"deviations":[255,279],"between":[260],"MAX-DOAS":[262,322],"showed":[266],"dependence":[268],"abundance,":[271],"maxima":[274],"positive":[278],"GEMS":[286,310],"could":[287],"not":[288],"capture":[289],"strong":[291],"systematic":[293],"\u201cnormal\u201d":[302],"well.":[304],"During":[305],"(&gt;2":[311],"molecules\u00b7cm\u22122)":[314],"overestimated":[315],"hourly":[317],"levels":[318,344],"measured":[319],"(&lt;1.6":[323],"molecules\u00b7cm\u22122).":[326],"As":[327],"whole,":[329],"these":[330],"results":[331],"are":[332],"beneficial":[333],"understanding":[335],"influences":[337],"anthropogenic":[339],"activities":[340],"learning":[349],"accuracy":[351],"over":[355],"TP,":[357],"its":[359],"high":[360],"altitude":[361],"complex":[363],"terrain.":[364]},"counts_by_year":[{"year":2025,"cited_by_count":4},{"year":2024,"cited_by_count":4}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2025-10-10T00:00:00"}
