{"id":"https://openalex.org/W2901730720","doi":"https://doi.org/10.1109/igarss.2018.8518129","title":"Microwave and Optical Data Fusion for Global Mapping of Soil Moisture at High Resolution","display_name":"Microwave and Optical Data Fusion for Global Mapping of Soil Moisture at High Resolution","publication_year":2018,"publication_date":"2018-07-01","ids":{"openalex":"https://openalex.org/W2901730720","doi":"https://doi.org/10.1109/igarss.2018.8518129","mag":"2901730720"},"language":"en","primary_location":{"id":"doi:10.1109/igarss.2018.8518129","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2018.8518129","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://hdl.handle.net/2117/129967","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5084761400","display_name":"Gerard Portal","orcid":"https://orcid.org/0000-0003-0797-6711"},"institutions":[{"id":"https://openalex.org/I9617848","display_name":"Universitat Polit\u00e8cnica de Catalunya","ror":"https://ror.org/03mb6wj31","country_code":"ES","type":"education","lineage":["https://openalex.org/I9617848"]},{"id":"https://openalex.org/I4210092024","display_name":"Institut d'Estudis Espacials de Catalunya","ror":"https://ror.org/00k6njn28","country_code":"ES","type":"facility","lineage":["https://openalex.org/I4210092024","https://openalex.org/I4387153040"]}],"countries":["ES"],"is_corresponding":true,"raw_author_name":"G. Portal","raw_affiliation_strings":["Institut d'Estudis Espacials de Catalunya IEEC/UPC, Barcelona, Spain"],"affiliations":[{"raw_affiliation_string":"Institut d'Estudis Espacials de Catalunya IEEC/UPC, Barcelona, Spain","institution_ids":["https://openalex.org/I9617848","https://openalex.org/I4210092024"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108669896","display_name":"M. Vall-Llosscra","orcid":null},"institutions":[{"id":"https://openalex.org/I4210092024","display_name":"Institut d'Estudis Espacials de Catalunya","ror":"https://ror.org/00k6njn28","country_code":"ES","type":"facility","lineage":["https://openalex.org/I4210092024","https://openalex.org/I4387153040"]},{"id":"https://openalex.org/I9617848","display_name":"Universitat Polit\u00e8cnica de Catalunya","ror":"https://ror.org/03mb6wj31","country_code":"ES","type":"education","lineage":["https://openalex.org/I9617848"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"M. Vall-Llosscra","raw_affiliation_strings":["Institut d'Estudis Espacials de Catalunya IEEC/UPC, Barcelona, Spain"],"affiliations":[{"raw_affiliation_string":"Institut d'Estudis Espacials de Catalunya IEEC/UPC, Barcelona, Spain","institution_ids":["https://openalex.org/I9617848","https://openalex.org/I4210092024"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5032528806","display_name":"Mar\u00eda Piles","orcid":"https://orcid.org/0000-0002-1169-3098"},"institutions":[{"id":"https://openalex.org/I16097986","display_name":"Universitat de Val\u00e8ncia","ror":"https://ror.org/043nxc105","country_code":"ES","type":"education","lineage":["https://openalex.org/I16097986"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"M. Piles","raw_affiliation_strings":["Image Processing Laboratory, Universitat de Val\u00e8ncia (UV), Val\u00e8ncia, Spain"],"affiliations":[{"raw_affiliation_string":"Image Processing Laboratory, Universitat de Val\u00e8ncia (UV), Val\u00e8ncia, Spain","institution_ids":["https://openalex.org/I16097986"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5073492252","display_name":"Adriano Camps","orcid":"https://orcid.org/0000-0002-9514-4992"},"institutions":[{"id":"https://openalex.org/I9617848","display_name":"Universitat Polit\u00e8cnica de Catalunya","ror":"https://ror.org/03mb6wj31","country_code":"ES","type":"education","lineage":["https://openalex.org/I9617848"]},{"id":"https://openalex.org/I4210092024","display_name":"Institut d'Estudis Espacials de Catalunya","ror":"https://ror.org/00k6njn28","country_code":"ES","type":"facility","lineage":["https://openalex.org/I4210092024","https://openalex.org/I4387153040"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"A. Camps","raw_affiliation_strings":["Institut d'Estudis Espacials de Catalunya IEEC/UPC, Barcelona, Spain"],"affiliations":[{"raw_affiliation_string":"Institut d'Estudis Espacials de Catalunya IEEC/UPC, Barcelona, Spain","institution_ids":["https://openalex.org/I9617848","https://openalex.org/I4210092024"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5007222499","display_name":"David Chaparro","orcid":"https://orcid.org/0000-0002-5545-6182"},"institutions":[{"id":"https://openalex.org/I4210092024","display_name":"Institut d'Estudis Espacials de Catalunya","ror":"https://ror.org/00k6njn28","country_code":"ES","type":"facility","lineage":["https://openalex.org/I4210092024","https://openalex.org/I4387153040"]},{"id":"https://openalex.org/I9617848","display_name":"Universitat Polit\u00e8cnica de Catalunya","ror":"https://ror.org/03mb6wj31","country_code":"ES","type":"education","lineage":["https://openalex.org/I9617848"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"D. Chaparro","raw_affiliation_strings":["Institut d'Estudis Espacials de Catalunya IEEC/UPC, Barcelona, Spain"],"affiliations":[{"raw_affiliation_string":"Institut d'Estudis Espacials de Catalunya IEEC/UPC, Barcelona, Spain","institution_ids":["https://openalex.org/I9617848","https://openalex.org/I4210092024"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5070225580","display_name":"M\u00edriam Pablos","orcid":"https://orcid.org/0000-0003-2694-7107"},"institutions":[{"id":"https://openalex.org/I184999862","display_name":"Universidad de Salamanca","ror":"https://ror.org/02f40zc51","country_code":"ES","type":"education","lineage":["https://openalex.org/I184999862"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"M. Pablos","raw_affiliation_strings":["Instituto Hispano-Luso de Investigatable Agrarias (CIALE), University of Salamanca (USAL), Villamayor, Spain"],"affiliations":[{"raw_affiliation_string":"Instituto Hispano-Luso de Investigatable Agrarias (CIALE), University of Salamanca (USAL), Villamayor, Spain","institution_ids":["https://openalex.org/I184999862"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108280526","display_name":"Luciana Rossato","orcid":null},"institutions":[{"id":"https://openalex.org/I9617848","display_name":"Universitat Polit\u00e8cnica de Catalunya","ror":"https://ror.org/03mb6wj31","country_code":"ES","type":"education","lineage":["https://openalex.org/I9617848"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"L. Rossato","raw_affiliation_strings":["Univcrsitat Polit\u00e8cnica de Catalunya, Barcelona, Spain"],"affiliations":[{"raw_affiliation_string":"Univcrsitat Polit\u00e8cnica de Catalunya, Barcelona, Spain","institution_ids":["https://openalex.org/I9617848"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5075121714","display_name":"K. Aabouch","orcid":null},"institutions":[{"id":"https://openalex.org/I9617848","display_name":"Universitat Polit\u00e8cnica de Catalunya","ror":"https://ror.org/03mb6wj31","country_code":"ES","type":"education","lineage":["https://openalex.org/I9617848"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"K. Aabouch","raw_affiliation_strings":["Univcrsitat Polit\u00e8cnica de Catalunya, Barcelona, Spain"],"affiliations":[{"raw_affiliation_string":"Univcrsitat Polit\u00e8cnica de Catalunya, Barcelona, Spain","institution_ids":["https://openalex.org/I9617848"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":8,"corresponding_author_ids":["https://openalex.org/A5084761400"],"corresponding_institution_ids":["https://openalex.org/I4210092024","https://openalex.org/I9617848"],"apc_list":null,"apc_paid":null,"fwci":0.4018,"has_fulltext":false,"cited_by_count":7,"citation_normalized_percentile":{"value":0.63346905,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":97},"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11312","display_name":"Soil Moisture and Remote Sensing","score":1.0,"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":1.0,"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/T11234","display_name":"Precipitation Measurement and Analysis","score":0.9979000091552734,"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/T10644","display_name":"Cryospheric studies and observations","score":0.9968000054359436,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/downscaling","display_name":"Downscaling","score":0.8093451261520386},{"id":"https://openalex.org/keywords/water-content","display_name":"Water content","score":0.6838701367378235},{"id":"https://openalex.org/keywords/brightness-temperature","display_name":"Brightness temperature","score":0.677370011806488},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.6682735681533813},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.6400784254074097},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.6262435913085938},{"id":"https://openalex.org/keywords/vegetation","display_name":"Vegetation (pathology)","score":0.5586724281311035},{"id":"https://openalex.org/keywords/image-resolution","display_name":"Image resolution","score":0.5509008765220642},{"id":"https://openalex.org/keywords/scale","display_name":"Scale (ratio)","score":0.50880366563797},{"id":"https://openalex.org/keywords/mean-squared-error","display_name":"Mean squared error","score":0.4541388154029846},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.3940126299858093},{"id":"https://openalex.org/keywords/precipitation","display_name":"Precipitation","score":0.3397219479084015},{"id":"https://openalex.org/keywords/microwave","display_name":"Microwave","score":0.3090943992137909},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.2548346519470215},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.17909392714500427},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.14375397562980652},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.12926483154296875},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.10020127892494202}],"concepts":[{"id":"https://openalex.org/C41156917","wikidata":"https://www.wikidata.org/wiki/Q682831","display_name":"Downscaling","level":3,"score":0.8093451261520386},{"id":"https://openalex.org/C24939127","wikidata":"https://www.wikidata.org/wiki/Q373499","display_name":"Water content","level":2,"score":0.6838701367378235},{"id":"https://openalex.org/C53802167","wikidata":"https://www.wikidata.org/wiki/Q4538627","display_name":"Brightness temperature","level":3,"score":0.677370011806488},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.6682735681533813},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.6400784254074097},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.6262435913085938},{"id":"https://openalex.org/C2776133958","wikidata":"https://www.wikidata.org/wiki/Q7918366","display_name":"Vegetation (pathology)","level":2,"score":0.5586724281311035},{"id":"https://openalex.org/C205372480","wikidata":"https://www.wikidata.org/wiki/Q210521","display_name":"Image resolution","level":2,"score":0.5509008765220642},{"id":"https://openalex.org/C2778755073","wikidata":"https://www.wikidata.org/wiki/Q10858537","display_name":"Scale (ratio)","level":2,"score":0.50880366563797},{"id":"https://openalex.org/C139945424","wikidata":"https://www.wikidata.org/wiki/Q1940696","display_name":"Mean squared error","level":2,"score":0.4541388154029846},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.3940126299858093},{"id":"https://openalex.org/C107054158","wikidata":"https://www.wikidata.org/wiki/Q25257","display_name":"Precipitation","level":2,"score":0.3397219479084015},{"id":"https://openalex.org/C44838205","wikidata":"https://www.wikidata.org/wiki/Q127995","display_name":"Microwave","level":2,"score":0.3090943992137909},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.2548346519470215},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.17909392714500427},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.14375397562980652},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.12926483154296875},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.10020127892494202},{"id":"https://openalex.org/C187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","level":1,"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/C58640448","wikidata":"https://www.wikidata.org/wiki/Q42515","display_name":"Cartography","level":1,"score":0.0},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.0},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.0},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","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}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/igarss.2018.8518129","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2018.8518129","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"},{"id":"pmh:oai:upcommons.upc.edu:2117/129967","is_oa":true,"landing_page_url":"http://hdl.handle.net/2117/129967","pdf_url":null,"source":{"id":"https://openalex.org/S4210207057","display_name":"QRU Quaderns de Recerca en Urbanisme","issn_l":"2014-9689","issn":["2014-9689","2385-6777"],"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310322448","host_organization_name":"Q71272178","host_organization_lineage":["https://openalex.org/P4310322448"],"host_organization_lineage_names":["Q71272178"],"type":"journal"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/conferenceObject"}],"best_oa_location":{"id":"pmh:oai:upcommons.upc.edu:2117/129967","is_oa":true,"landing_page_url":"http://hdl.handle.net/2117/129967","pdf_url":null,"source":{"id":"https://openalex.org/S4210207057","display_name":"QRU Quaderns de Recerca en Urbanisme","issn_l":"2014-9689","issn":["2014-9689","2385-6777"],"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310322448","host_organization_name":"Q71272178","host_organization_lineage":["https://openalex.org/P4310322448"],"host_organization_lineage_names":["Q71272178"],"type":"journal"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/conferenceObject"},"sustainable_development_goals":[{"display_name":"Life below water","id":"https://metadata.un.org/sdg/14","score":0.8299999833106995}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W385663865","https://openalex.org/W1997907895","https://openalex.org/W2003578656","https://openalex.org/W2072567364","https://openalex.org/W2100401723","https://openalex.org/W2102998469","https://openalex.org/W2107437432","https://openalex.org/W2116779222","https://openalex.org/W2140510442","https://openalex.org/W2167731682","https://openalex.org/W2169390633","https://openalex.org/W2773769938"],"related_works":["https://openalex.org/W2394436593","https://openalex.org/W3013458534","https://openalex.org/W3010558748","https://openalex.org/W2526815458","https://openalex.org/W4220911053","https://openalex.org/W2380042710","https://openalex.org/W4377833746","https://openalex.org/W4387102043","https://openalex.org/W769766909","https://openalex.org/W2349440800"],"abstract_inverted_index":{"After":[0],"more":[1],"than":[2],"8":[3],"years":[4],"in":[5,17,33,89,93,154,170],"orbit":[6],"the":[7,47,59,81,132,147,155,158,162],"Soil":[8],"Moisture":[9],"and":[10,20,31,75,91,107,112,174],"Ocean":[11],"Salinity":[12],"(SMOS)":[13],"satellite":[14],"is":[15,152],"still":[16],"good":[18,168],"health":[19],"several":[21],"algorithms":[22],"for":[23,66,136],"improving":[24],"its":[25,67],"spatial":[26,105],"resolution":[27],"have":[28],"been":[29,44,143],"proposed":[30,96],"validated":[32],"a":[34,56,77,129],"variety":[35],"of":[36,40,58,80,131,172],"catchments.":[37],"However,":[38],"none":[39],"them":[41],"has":[42,142],"yet":[43],"applied":[45],"at":[46],"global":[48,68],"scale.":[49],"In":[50],"this":[51],"article":[52],"we":[53],"present:":[54],"i)":[55],"review":[57],"latest":[60],"SMOS-BEC":[61],"downscaling":[62],"algorithm,":[63,133],"which":[64,134],"allows":[65,135],"application":[69],"using":[70],"an":[71],"adaptive":[72],"moving":[73],"window":[74],"ii)":[76],"thorough":[78],"validation":[79],"resulting":[82],"maps":[83],"over":[84],"two":[85],"in-situ":[86,178],"networks:":[87],"REMEDHUS":[88],"Spain":[90],"OzNet":[92],"Australia.":[94],"The":[95],"algorithm":[97,156],"combines":[98],"SMOS":[99],"brightness":[100],"temperatures":[101],"(at":[102,117],"~40":[103],"km":[104],"resolution),":[106],"MODIS-derived":[108],"Land":[109,149],"Surface":[110,150],"Temperature":[111,151],"Normalized":[113],"Differenced":[114],"Vegetation":[115],"Index":[116],"1":[118],"km),":[119],"into":[120],"1km":[121],"soil":[122,179],"moisture":[123],"maps.":[124],"This":[125],"paper":[126],"also":[127],"presents":[128],"variant":[130],"cloud-free":[137],"retrievals.":[138],"A":[139],"statistical":[140],"comparison":[141],"carried":[144],"out":[145],"when":[146],"MODIS":[148],"replaced":[153],"by":[157,161],"one":[159],"provided":[160],"ERA5":[163],"reanalysis.":[164],"Fine-scale":[165],"estimates":[166],"show":[167],"agreement":[169],"terms":[171],"correlation":[173],"root-mean-squared":[175],"error":[176],"with":[177],"moisture.":[180]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":3},{"year":2020,"cited_by_count":2},{"year":2018,"cited_by_count":1}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2018-11-29T00:00:00"}