{"id":"https://openalex.org/W4402259493","doi":"https://doi.org/10.1109/igarss53475.2024.10640723","title":"GAP Filling of SMAP Soil Moisture Products Using Different Approaches","display_name":"GAP Filling of SMAP Soil Moisture Products Using Different Approaches","publication_year":2024,"publication_date":"2024-07-07","ids":{"openalex":"https://openalex.org/W4402259493","doi":"https://doi.org/10.1109/igarss53475.2024.10640723"},"language":"en","primary_location":{"id":"doi:10.1109/igarss53475.2024.10640723","is_oa":false,"landing_page_url":"http://dx.doi.org/10.1109/igarss53475.2024.10640723","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"},"type":"conference-paper","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/A5114833554","display_name":"Chunlin Zhang","orcid":"https://orcid.org/0000-0003-2022-7598"},"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/I4210137199","display_name":"Aerospace Information Research Institute","ror":"https://ror.org/0419fj215","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210137199"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chunlin Zhang","raw_affiliation_strings":["Chinese Academy of Sciences,Aerospace Information Research Institute,Beijing,China,100101"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chinese Academy of Sciences,Aerospace Information Research Institute,Beijing,China,100101","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210137199"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060263237","display_name":"Jiangyuan Zeng","orcid":"https://orcid.org/0000-0002-5039-6774"},"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/I4210137199","display_name":"Aerospace Information Research Institute","ror":"https://ror.org/0419fj215","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210137199"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jiangyuan Zeng","raw_affiliation_strings":["Chinese Academy of Sciences,Aerospace Information Research Institute,Beijing,China,100101"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chinese Academy of Sciences,Aerospace Information Research Institute,Beijing,China,100101","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210137199"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109400962","display_name":"Kun\u2010Shan Chen","orcid":"https://orcid.org/0000-0001-7698-9861"},"institutions":[{"id":"https://openalex.org/I881766915","display_name":"Nanjing University","ror":"https://ror.org/01rxvg760","country_code":"CN","type":"education","lineage":["https://openalex.org/I881766915"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Kun-Shan Chen","raw_affiliation_strings":["Nanjing University,Institute of Space Earth Science,Suzhou,China,215163"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Nanjing University,Institute of Space Earth Science,Suzhou,China,215163","institution_ids":["https://openalex.org/I881766915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010449046","display_name":"Hongliang Ma","orcid":"https://orcid.org/0000-0002-8260-8030"},"institutions":[{"id":"https://openalex.org/I198415970","display_name":"Universit\u00e9 d'Avignon et des Pays de Vaucluse","ror":"https://ror.org/00mfpxb84","country_code":"FR","type":"education","lineage":["https://openalex.org/I198415970"]},{"id":"https://openalex.org/I4210088668","display_name":"Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement","ror":"https://ror.org/003vg9w96","country_code":"FR","type":"government","lineage":["https://openalex.org/I4210088668"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Hongliang Ma","raw_affiliation_strings":["INRAE, Avignon Universite, UMR 1114 EMMAH, UMT CAPTE,Avignon,France,F-84000"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"INRAE, Avignon Universite, UMR 1114 EMMAH, UMT CAPTE,Avignon,France,F-84000","institution_ids":["https://openalex.org/I198415970","https://openalex.org/I4210088668"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5049695253","display_name":"Pengfei Shi","orcid":"https://orcid.org/0000-0002-4467-7641"},"institutions":[{"id":"https://openalex.org/I4210158179","display_name":"Yellow River Institute of Hydraulic Research","ror":"https://ror.org/0506q7a98","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210155611","https://openalex.org/I4210158179"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Pengfei Shi","raw_affiliation_strings":["Yellow River Engineering Consulting Co., Ltd.,Zhengzhou,China,450003"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Yellow River Engineering Consulting Co., Ltd.,Zhengzhou,China,450003","institution_ids":["https://openalex.org/I4210158179"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111316048","display_name":"Panshan Wang","orcid":"https://orcid.org/0009-0006-3765-3082"},"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/I4210137199","display_name":"Aerospace Information Research Institute","ror":"https://ror.org/0419fj215","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210137199"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Panshan Wang","raw_affiliation_strings":["Chinese Academy of Sciences,Aerospace Information Research Institute,Beijing,China,100101"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chinese Academy of Sciences,Aerospace Information Research Institute,Beijing,China,100101","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210137199"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102425920","display_name":"Haiyun Bi","orcid":null},"institutions":[{"id":"https://openalex.org/I90149893","display_name":"China Earthquake Administration","ror":"https://ror.org/045sza929","country_code":"CN","type":"facility","lineage":["https://openalex.org/I90149893"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Haiyun Bi","raw_affiliation_strings":["China Earthquake Administration,Institute of Geology,Beijing,China,100029"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"China Earthquake Administration,Institute of Geology,Beijing,China,100029","institution_ids":["https://openalex.org/I90149893"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084258789","display_name":"Quan Chen","orcid":"https://orcid.org/0000-0001-5174-8762"},"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/I4210137199","display_name":"Aerospace Information Research Institute","ror":"https://ror.org/0419fj215","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210137199"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Quan Chen","raw_affiliation_strings":["Chinese Academy of Sciences,Aerospace Information Research Institute,Beijing,China,100101"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chinese Academy of Sciences,Aerospace Information Research Institute,Beijing,China,100101","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210137199"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5072576421","display_name":"Husi Letu","orcid":"https://orcid.org/0000-0002-7336-8872"},"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/I4210137199","display_name":"Aerospace Information Research Institute","ror":"https://ror.org/0419fj215","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210137199"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Husi Letu","raw_affiliation_strings":["Chinese Academy of Sciences,Aerospace Information Research Institute,Beijing,China,100101"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chinese Academy of Sciences,Aerospace Information Research Institute,Beijing,China,100101","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210137199"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":7,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"5052","last_page":"5055"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11312","display_name":"Soil Moisture and Remote Sensing","score":0.980400025844574,"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/T11312","display_name":"Soil Moisture and Remote Sensing","score":0.980400025844574,"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/environmental-science","display_name":"Environmental science","score":0.6093176007270813},{"id":"https://openalex.org/keywords/moisture","display_name":"Moisture","score":0.5976018905639648},{"id":"https://openalex.org/keywords/water-content","display_name":"Water content","score":0.5574237108230591},{"id":"https://openalex.org/keywords/soil-science","display_name":"Soil science","score":0.4127444326877594},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.3600727617740631},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.33788126707077026},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.23443660140037537},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.19816219806671143},{"id":"https://openalex.org/keywords/geotechnical-engineering","display_name":"Geotechnical engineering","score":0.12875869870185852},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.08674952387809753}],"concepts":[{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.6093176007270813},{"id":"https://openalex.org/C176864760","wikidata":"https://www.wikidata.org/wiki/Q217651","display_name":"Moisture","level":2,"score":0.5976018905639648},{"id":"https://openalex.org/C24939127","wikidata":"https://www.wikidata.org/wiki/Q373499","display_name":"Water content","level":2,"score":0.5574237108230591},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","level":1,"score":0.4127444326877594},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.3600727617740631},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.33788126707077026},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.23443660140037537},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.19816219806671143},{"id":"https://openalex.org/C187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","level":1,"score":0.12875869870185852},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.08674952387809753}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/igarss53475.2024.10640723","is_oa":false,"landing_page_url":"http://dx.doi.org/10.1109/igarss53475.2024.10640723","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"},{"id":"pmh:oai:HAL:hal-05028981v1","is_oa":false,"landing_page_url":"https://hal.inrae.fr/hal-05028981","pdf_url":null,"source":{"id":"https://openalex.org/S4306402512","display_name":"HAL (Le Centre pour la Communication Scientifique Directe)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1294671590","host_organization_name":"Centre National de la Recherche Scientifique","host_organization_lineage":["https://openalex.org/I1294671590"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium, Jul 2024, Athens, France. pp.5052-5055, &#x27E8;10.1109/IGARSS53475.2024.10640723&#x27E9;","raw_type":"info:eu-repo/semantics/conferenceObject"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Zero hunger","id":"https://metadata.un.org/sdg/2","score":0.6899999976158142}],"awards":[],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320335892","display_name":"Youth Innovation Promotion Association","ror":null}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":11,"referenced_works":["https://openalex.org/W2013049148","https://openalex.org/W2055056592","https://openalex.org/W2966684393","https://openalex.org/W3135330503","https://openalex.org/W3140583571","https://openalex.org/W3200802708","https://openalex.org/W3204090411","https://openalex.org/W4287731781","https://openalex.org/W4309337051","https://openalex.org/W4313574232","https://openalex.org/W4381734056"],"related_works":["https://openalex.org/W1885452192","https://openalex.org/W2108512031","https://openalex.org/W2063755384","https://openalex.org/W2048409327","https://openalex.org/W2153306223","https://openalex.org/W2997015357","https://openalex.org/W2390117385","https://openalex.org/W2123825282","https://openalex.org/W1977273908","https://openalex.org/W2079990215"],"abstract_inverted_index":{"Satellite":[0],"soil":[1,25,34,71,203],"moisture":[2,26,35,72],"products":[3,43,73],"have":[4],"great":[5],"potential":[6],"for":[7,44],"many":[8],"applications,":[9],"such":[10,45],"as":[11],"drought":[12],"monitoring":[13],"and":[14,23,28,51,60,77,126,154],"landslide":[15],"warning.":[16],"However,":[17],"these":[18,42],"applications":[19],"often":[20,37],"require":[21],"accurate":[22],"continuous":[24],"records,":[27],"the":[29,39,65,69,82,100,108,115,122,143,146,159,168,174,177,185,189,197,200,206,209],"missing":[30,66],"values":[31,67],"in":[32,68,74,129,158,167,184],"satellite":[33],"datasets":[36,102],"hamper":[38],"usefulness":[40],"of":[41,93,103,110,179,199,208],"applications.":[46],"This":[47],"study":[48],"firstly":[49],"proposed":[50,210],"compared":[52,120],"three":[53],"approaches,":[54],"i.e.,":[55],"linear":[56,58,152,155],"regression,":[57],"rescaling,":[59],"random":[61,104,147,180],"forest":[62,105,148,181],"to":[63,88,106],"fill":[64],"SMAP":[70,112,117,124,191,202],"both":[75],"temporal":[76],"spatial":[78],"dimensions,":[79],"based":[80],"on":[81],"seamless":[83],"ERA5":[84,144],"data":[85,96,118,125,192],"from":[86,132],"2016":[87],"2019.":[89],"Then,":[90],"a":[91],"total":[92],"twelve":[94],"auxiliary":[95,175],"were":[97,119],"incorporated":[98],"into":[99],"training":[101,160],"improve":[107],"accuracy":[109,198],"gap-filled":[111,116,190],"data.":[113],"Finally,":[114],"with":[121],"original":[123,201],"validated":[127],"by":[128,172],"situ":[130],"measurements":[131],"1071":[133],"sites":[134],"worldwide.":[135],"The":[136],"results":[137],"indicate:":[138],"1)":[139],"when":[140],"using":[141],"only":[142],"datasets,":[145],"performs":[149],"better":[150],"than":[151],"regression":[153],"rescaling":[156],"methods":[157],"phase,":[161],"but":[162],"its":[163],"skill":[164],"degrades":[165],"noticeably":[166],"validation":[169,186],"phase;":[170,187],"2)":[171],"adding":[173],"data,":[176],"performance":[178],"improves":[182],"significantly":[183],"3)":[188],"maintain":[193],"or":[194],"even":[195],"exceed":[196],"moisture,":[204],"demonstrating":[205],"effectiveness":[207],"gap-filling":[211],"method.":[212]},"counts_by_year":[{"year":2025,"cited_by_count":1}],"updated_date":"2026-07-22T07:51:19.307946","created_date":"2025-10-10T00:00:00"}
