{"id":"https://openalex.org/W3194202255","doi":"https://doi.org/10.1109/tgrs.2021.3102059","title":"Retrieving the Vertical Distribution of PM<sub>2.5</sub> Mass Concentration From Lidar Via a Random Forest Model","display_name":"Retrieving the Vertical Distribution of PM<sub>2.5</sub> Mass Concentration From Lidar Via a Random Forest Model","publication_year":2021,"publication_date":"2021-08-13","ids":{"openalex":"https://openalex.org/W3194202255","doi":"https://doi.org/10.1109/tgrs.2021.3102059","mag":"3194202255"},"language":"en","primary_location":{"id":"doi:10.1109/tgrs.2021.3102059","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tgrs.2021.3102059","pdf_url":null,"source":{"id":"https://openalex.org/S111326731","display_name":"IEEE Transactions on Geoscience and Remote Sensing","issn_l":"0196-2892","issn":["0196-2892","1558-0644"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Geoscience and Remote Sensing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5016781161","display_name":"Yang Zhu","orcid":null},"institutions":[{"id":"https://openalex.org/I43922553","display_name":"Wuhan University of Science and Technology","ror":"https://ror.org/00e4hrk88","country_code":"CN","type":"education","lineage":["https://openalex.org/I43922553"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yang Zhu","raw_affiliation_strings":["School of Computer Science and Technology, Wuhan University of Science and Technology, Wuhan, China","School of Computer Science and Technology,Wuhan University of Science and Technology,Wuhan 430065,China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, Wuhan University of Science and Technology, Wuhan, China","institution_ids":["https://openalex.org/I43922553"]},{"raw_affiliation_string":"School of Computer Science and Technology,Wuhan University of Science and Technology,Wuhan 430065,China","institution_ids":["https://openalex.org/I43922553"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101705869","display_name":"Yingying Ma","orcid":"https://orcid.org/0000-0002-8699-0652"},"institutions":[{"id":"https://openalex.org/I37461747","display_name":"Wuhan University","ror":"https://ror.org/033vjfk17","country_code":"CN","type":"education","lineage":["https://openalex.org/I37461747"]},{"id":"https://openalex.org/I4210118728","display_name":"State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing","ror":"https://ror.org/02bpap860","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210118728"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yingying Ma","raw_affiliation_strings":["State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China","State Key Laboratory of Information Engineering in Surveying  Mapping and Remote Sensing  Wuhan University  Wuhan 430072  China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China","institution_ids":["https://openalex.org/I4210118728","https://openalex.org/I37461747"]},{"raw_affiliation_string":"State Key Laboratory of Information Engineering in Surveying  Mapping and Remote Sensing  Wuhan University  Wuhan 430072  China","institution_ids":["https://openalex.org/I4210118728","https://openalex.org/I37461747"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101550692","display_name":"Boming Liu","orcid":"https://orcid.org/0000-0002-3443-2261"},"institutions":[{"id":"https://openalex.org/I37461747","display_name":"Wuhan University","ror":"https://ror.org/033vjfk17","country_code":"CN","type":"education","lineage":["https://openalex.org/I37461747"]},{"id":"https://openalex.org/I4210118728","display_name":"State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing","ror":"https://ror.org/02bpap860","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210118728"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Boming Liu","raw_affiliation_strings":["State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China","[State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430072, China (e-mail: liuboming@whu.edu.cn)]"],"raw_orcid":"https://orcid.org/0000-0002-3443-2261","affiliations":[{"raw_affiliation_string":"State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China","institution_ids":["https://openalex.org/I4210118728","https://openalex.org/I37461747"]},{"raw_affiliation_string":"[State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430072, China (e-mail: liuboming@whu.edu.cn)]","institution_ids":["https://openalex.org/I4210118728","https://openalex.org/I37461747"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100696102","display_name":"Xin Xu","orcid":"https://orcid.org/0000-0003-0748-3669"},"institutions":[{"id":"https://openalex.org/I43922553","display_name":"Wuhan University of Science and Technology","ror":"https://ror.org/00e4hrk88","country_code":"CN","type":"education","lineage":["https://openalex.org/I43922553"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xin Xu","raw_affiliation_strings":["School of Computer Science and Technology, Wuhan University of Science and Technology, Wuhan, China","[School of Computer Science and Technology, Wuhan University of Science and Technology, Wuhan 430065, China (e-mail: xuxin@wust.edu.cn).]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, Wuhan University of Science and Technology, Wuhan, China","institution_ids":["https://openalex.org/I43922553"]},{"raw_affiliation_string":"[School of Computer Science and Technology, Wuhan University of Science and Technology, Wuhan 430065, China (e-mail: xuxin@wust.edu.cn).]","institution_ids":["https://openalex.org/I43922553"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5046308125","display_name":"Shikuan Jin","orcid":"https://orcid.org/0000-0002-0938-4202"},"institutions":[{"id":"https://openalex.org/I37461747","display_name":"Wuhan University","ror":"https://ror.org/033vjfk17","country_code":"CN","type":"education","lineage":["https://openalex.org/I37461747"]},{"id":"https://openalex.org/I4210118728","display_name":"State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing","ror":"https://ror.org/02bpap860","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210118728"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shikuan Jin","raw_affiliation_strings":["State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China","State Key Laboratory of Information Engineering in Surveying  Mapping and Remote Sensing  Wuhan University  Wuhan 430072  China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China","institution_ids":["https://openalex.org/I4210118728","https://openalex.org/I37461747"]},{"raw_affiliation_string":"State Key Laboratory of Information Engineering in Surveying  Mapping and Remote Sensing  Wuhan University  Wuhan 430072  China","institution_ids":["https://openalex.org/I4210118728","https://openalex.org/I37461747"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100650782","display_name":"Wei Gong","orcid":"https://orcid.org/0000-0002-2276-8024"},"institutions":[{"id":"https://openalex.org/I37461747","display_name":"Wuhan University","ror":"https://ror.org/033vjfk17","country_code":"CN","type":"education","lineage":["https://openalex.org/I37461747"]},{"id":"https://openalex.org/I4210118728","display_name":"State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing","ror":"https://ror.org/02bpap860","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210118728"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Wei Gong","raw_affiliation_strings":["State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China","State Key Laboratory of Information Engineering in Surveying  Mapping and Remote Sensing  Wuhan University  Wuhan 430072  China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China","institution_ids":["https://openalex.org/I4210118728","https://openalex.org/I37461747"]},{"raw_affiliation_string":"State Key Laboratory of Information Engineering in Surveying  Mapping and Remote Sensing  Wuhan University  Wuhan 430072  China","institution_ids":["https://openalex.org/I4210118728","https://openalex.org/I37461747"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.4671,"has_fulltext":false,"cited_by_count":15,"citation_normalized_percentile":{"value":0.81069685,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":"60","issue":null,"first_page":"1","last_page":"9"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10347","display_name":"Atmospheric aerosols and clouds","score":0.9998000264167786,"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/T10347","display_name":"Atmospheric aerosols and clouds","score":0.9998000264167786,"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/T10075","display_name":"Atmospheric chemistry and aerosols","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12120","display_name":"Air Quality Monitoring and Forecasting","score":0.9995999932289124,"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/lidar","display_name":"Lidar","score":0.7555080652236938},{"id":"https://openalex.org/keywords/distribution","display_name":"Distribution (mathematics)","score":0.45360857248306274},{"id":"https://openalex.org/keywords/linear-regression","display_name":"Linear regression","score":0.4252476394176483},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.41796061396598816},{"id":"https://openalex.org/keywords/sampling","display_name":"Sampling (signal processing)","score":0.4136025309562683},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.41228634119033813},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.36433881521224976},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.35081180930137634},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.33524268865585327},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3225666284561157},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.2672114968299866},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.15042081475257874},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.13259422779083252},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.08704715967178345}],"concepts":[{"id":"https://openalex.org/C51399673","wikidata":"https://www.wikidata.org/wiki/Q504027","display_name":"Lidar","level":2,"score":0.7555080652236938},{"id":"https://openalex.org/C110121322","wikidata":"https://www.wikidata.org/wiki/Q865811","display_name":"Distribution (mathematics)","level":2,"score":0.45360857248306274},{"id":"https://openalex.org/C48921125","wikidata":"https://www.wikidata.org/wiki/Q10861030","display_name":"Linear regression","level":2,"score":0.4252476394176483},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.41796061396598816},{"id":"https://openalex.org/C140779682","wikidata":"https://www.wikidata.org/wiki/Q210868","display_name":"Sampling (signal processing)","level":3,"score":0.4136025309562683},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.41228634119033813},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.36433881521224976},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.35081180930137634},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.33524268865585327},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3225666284561157},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.2672114968299866},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.15042081475257874},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.13259422779083252},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.08704715967178345},{"id":"https://openalex.org/C94915269","wikidata":"https://www.wikidata.org/wiki/Q1834857","display_name":"Detector","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tgrs.2021.3102059","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tgrs.2021.3102059","pdf_url":null,"source":{"id":"https://openalex.org/S111326731","display_name":"IEEE Transactions on Geoscience and Remote Sensing","issn_l":"0196-2892","issn":["0196-2892","1558-0644"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Geoscience and Remote Sensing","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G2481576787","display_name":null,"funder_award_id":"2020M682485","funder_id":"https://openalex.org/F4320321543","funder_display_name":"China Postdoctoral Science Foundation"},{"id":"https://openalex.org/G999773786","display_name":null,"funder_award_id":"42001291","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320321543","display_name":"China Postdoctoral Science Foundation","ror":"https://ror.org/0426zh255"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":51,"referenced_works":["https://openalex.org/W1887798800","https://openalex.org/W1967285184","https://openalex.org/W1980891198","https://openalex.org/W2014401819","https://openalex.org/W2036757139","https://openalex.org/W2042679028","https://openalex.org/W2046182010","https://openalex.org/W2066245043","https://openalex.org/W2073364815","https://openalex.org/W2087199341","https://openalex.org/W2104471998","https://openalex.org/W2125790985","https://openalex.org/W2127215108","https://openalex.org/W2172326024","https://openalex.org/W2189499426","https://openalex.org/W2194097676","https://openalex.org/W2297827415","https://openalex.org/W2316657201","https://openalex.org/W2334651408","https://openalex.org/W2356896233","https://openalex.org/W2365771274","https://openalex.org/W2509599246","https://openalex.org/W2560103205","https://openalex.org/W2604939430","https://openalex.org/W2612321463","https://openalex.org/W2626326445","https://openalex.org/W2725704704","https://openalex.org/W2753214643","https://openalex.org/W2757806018","https://openalex.org/W2759291154","https://openalex.org/W2793541587","https://openalex.org/W2807861482","https://openalex.org/W2842632718","https://openalex.org/W2900333869","https://openalex.org/W2903922503","https://openalex.org/W2915059500","https://openalex.org/W2968894603","https://openalex.org/W2987060060","https://openalex.org/W2989981902","https://openalex.org/W2990205665","https://openalex.org/W2995179471","https://openalex.org/W3008599913","https://openalex.org/W3008949811","https://openalex.org/W3012826589","https://openalex.org/W3047932907","https://openalex.org/W3083046904","https://openalex.org/W3098891304","https://openalex.org/W3110642941","https://openalex.org/W3121736343","https://openalex.org/W3170039856","https://openalex.org/W6771658506"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W2351984678","https://openalex.org/W2487834875","https://openalex.org/W1964041166","https://openalex.org/W2140032575","https://openalex.org/W2094658701","https://openalex.org/W2137933418","https://openalex.org/W2044978252","https://openalex.org/W2001896714","https://openalex.org/W2064376096"],"abstract_inverted_index":{"The":[0,72,139,191,273,335],"vertical":[1,52,69,93,346],"distribution":[2,53],"of":[3,31,43,50,54,64,95,106,172,280,296,311,325],"fine":[4],"particles":[5],"with":[6,68,322],"a":[7,323],"diameter":[8],"<inline-formula":[9,153,213,281,327],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[10,20,57,88,98,132,154,167,179,214,230,248,258,264,282,300,314,328,344],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">":[11,155,215,283,329],"<tex-math":[12,156,216,284,330],"notation=\"LaTeX\">$":[13],"&lt;":[14],"2.5~\\mu":[15],"\\text{m}$":[16],"</tex-math></inline-formula>":[17,158,219,286,333],"(PM":[18],"<sub":[19,56,87,97,131,166,178,229,247,263,299,313,343],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">2.5</sub>":[21,58,89,99,133,168,180,231,249,265,301,315,345],")":[22],"plays":[23],"an":[24],"important":[25],"role":[26],"in":[27,35],"understanding":[28],"the":[29,39,48,51,62,77,82,92,104,129,145,173,183,187,197,226,234,244,278,293,297,308],"transport":[30],"air":[32,45],"pollution":[33,271],"and":[34,41,120,163,175,196,203,211,236,287,348],"making":[36],"decisions":[37],"regarding":[38],"prevention":[40],"control":[42],"regional":[44,349],"pollution.":[46],"However,":[47],"studies":[49],"PM":[55,86,96,130,165,177,228,246,262,298,312,342],"were":[59,101,125,141,209,289],"limited":[60],"by":[61],"lack":[63],"monitoring":[65],"data":[66,108],"obtained":[67,337],"sampling":[70],"strategies.":[71],"lidar":[73,107,137],"system":[74],"can":[75],"obtain":[76],"aerosol":[78],"profile,":[79],"which":[80],"provides":[81],"possibility":[83],"to":[84,112,127],"measure":[85],"profile.":[90],"Here,":[91],"distributions":[94],"concentrations":[100],"investigated":[102],"on":[103,144],"basis":[105],"from":[109,136],"January":[110],"2014":[111],"October":[113],"2015.":[114],"Linear":[115],"regression,":[116,119],"improved":[117,237],"linear":[118,235,238],"random":[121],"forest":[122],"(RF)":[123],"models":[124,140,239],"used":[126],"retrieve":[128],"concentration":[134,310],"profile":[135],"data.":[138],"built":[142],"based":[143],"relationship":[146],"among":[147],"extinction":[148],"coefficient":[149,193],"(EC),":[150],"temperature":[151],"(":[152],"notation=\"LaTeX\">$T$":[157,285],"),":[159],"relative":[160],"humidity":[161],"(RH),":[162],"surface":[164],"mass":[169,309],"concentration.":[170],"Comparison":[171],"estimated":[174,227],"observed":[176,245],"showed":[181],"that":[182,225,277,307],"RF":[184],"model":[185],"exhibited":[186],"best":[188],"inversion":[189],"effect.":[190],"correlation":[192],"reached":[194],"0.75,":[195],"root":[198,204],"mean":[199,205],"absolute":[200],"error":[201,207],"(RMAE)":[202],"square":[206],"(RMSE)":[208],"3.94":[210],"21.1":[212],"notation=\"LaTeX\">$\\mu":[217,331],"\\text{g}/\\text{m}^{3}$":[218,332],",":[220,260],"respectively.":[221],"Error":[222],"analysis":[223],"indicated":[224,306],"retrieved":[232],"using":[233],"(ILMs)":[240],"was":[241,252,266,303,316],"smaller":[242],"than":[243,254],"when":[250],"EC":[251],"less":[253],"0.7":[255],"km":[256],"<sup":[257],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">\u22121</sup>":[259],"whereas":[261],"evidently":[267],"overestimated":[268],"during":[269],"winter":[270],"days.":[272],"reason":[274],"might":[275],"be":[276],"effects":[279],"RH":[288],"inaccurately":[290],"considered.":[291],"Finally,":[292],"seasonal":[294],"variation":[295],"profiles":[302],"investigated.":[304],"Results":[305],"relatively":[317],"large":[318],"within":[319],"0.5\u20131.5":[320],"km,":[321],"maximum":[324],"60":[326],".":[334],"findings":[336],"here":[338],"provide":[339],"guidance":[340],"for":[341],"observation":[347],"pollutant":[350],"transport.":[351]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":5},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":3}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
