{"id":"https://openalex.org/W3133211966","doi":"https://doi.org/10.1109/igarss39084.2020.9324061","title":"Estimating Global Evapotranspiration Using Smap Surface and Root-Zone Moisture Content","display_name":"Estimating Global Evapotranspiration Using Smap Surface and Root-Zone Moisture Content","publication_year":2020,"publication_date":"2020-09-26","ids":{"openalex":"https://openalex.org/W3133211966","doi":"https://doi.org/10.1109/igarss39084.2020.9324061","mag":"3133211966"},"language":"en","primary_location":{"id":"doi:10.1109/igarss39084.2020.9324061","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss39084.2020.9324061","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-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/A5100638617","display_name":"Youngwook Kim","orcid":"https://orcid.org/0000-0003-0697-2575"},"institutions":[{"id":"https://openalex.org/I6750721","display_name":"University of Montana","ror":"https://ror.org/0078xmk34","country_code":"US","type":"education","lineage":["https://openalex.org/I6750721"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Youngwook Kim","raw_affiliation_strings":["Numerical Terradynamic Simulation Group, College of Forestry & Conservation, University of Montana, Missoula, MT, USA"],"affiliations":[{"raw_affiliation_string":"Numerical Terradynamic Simulation Group, College of Forestry & Conservation, University of Montana, Missoula, MT, USA","institution_ids":["https://openalex.org/I6750721"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5051268436","display_name":"Hotaek Park","orcid":"https://orcid.org/0000-0002-8042-2902"},"institutions":[{"id":"https://openalex.org/I1315852903","display_name":"Japan Agency for Marine-Earth Science and Technology","ror":"https://ror.org/059qg2m13","country_code":"JP","type":"facility","lineage":["https://openalex.org/I1315852903"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hotaek Park","raw_affiliation_strings":["JAMSTEC, Yokohama, Japan"],"affiliations":[{"raw_affiliation_string":"JAMSTEC, Yokohama, Japan","institution_ids":["https://openalex.org/I1315852903"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5012801147","display_name":"John S. Kimball","orcid":"https://orcid.org/0000-0002-5493-5878"},"institutions":[{"id":"https://openalex.org/I6750721","display_name":"University of Montana","ror":"https://ror.org/0078xmk34","country_code":"US","type":"education","lineage":["https://openalex.org/I6750721"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"John S. Kimball","raw_affiliation_strings":["Numerical Terradynamic Simulation Group, College of Forestry & Conservation, University of Montana, Missoula, MT, USA"],"affiliations":[{"raw_affiliation_string":"Numerical Terradynamic Simulation Group, College of Forestry & Conservation, University of Montana, Missoula, MT, USA","institution_ids":["https://openalex.org/I6750721"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5008146196","display_name":"Andreas Colliander","orcid":"https://orcid.org/0000-0003-4093-8119"},"institutions":[{"id":"https://openalex.org/I1334627681","display_name":"Jet Propulsion Laboratory","ror":"https://ror.org/027k65916","country_code":"US","type":"facility","lineage":["https://openalex.org/I122411786","https://openalex.org/I1334627681","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Andreas Colliander","raw_affiliation_strings":["Jet Propulsion Laboratory, California Institute of Technology, NASA, Pasadena, CA, USA"],"affiliations":[{"raw_affiliation_string":"Jet Propulsion Laboratory, California Institute of Technology, NASA, Pasadena, CA, USA","institution_ids":["https://openalex.org/I1334627681"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5011718069","display_name":"Jesse V. Johnson","orcid":"https://orcid.org/0000-0002-7387-6500"},"institutions":[{"id":"https://openalex.org/I6750721","display_name":"University of Montana","ror":"https://ror.org/0078xmk34","country_code":"US","type":"education","lineage":["https://openalex.org/I6750721"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jesse Johnson","raw_affiliation_strings":["University of Montana, Missoula, MT, USA"],"affiliations":[{"raw_affiliation_string":"University of Montana, Missoula, MT, USA","institution_ids":["https://openalex.org/I6750721"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5100638617"],"corresponding_institution_ids":["https://openalex.org/I6750721"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.16375644,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"4707","last_page":"4710"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10266","display_name":"Plant Water Relations and Carbon Dynamics","score":0.9997000098228455,"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/T10266","display_name":"Plant Water Relations and Carbon Dynamics","score":0.9997000098228455,"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/T11312","display_name":"Soil Moisture and Remote Sensing","score":0.9993000030517578,"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/T10330","display_name":"Hydrology and Watershed Management Studies","score":0.9954000115394592,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"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":0.8125426173210144},{"id":"https://openalex.org/keywords/evapotranspiration","display_name":"Evapotranspiration","score":0.8086659908294678},{"id":"https://openalex.org/keywords/water-content","display_name":"Water content","score":0.7450838685035706},{"id":"https://openalex.org/keywords/transpiration","display_name":"Transpiration","score":0.7049186825752258},{"id":"https://openalex.org/keywords/vegetation","display_name":"Vegetation (pathology)","score":0.6938605904579163},{"id":"https://openalex.org/keywords/precipitation","display_name":"Precipitation","score":0.5965309143066406},{"id":"https://openalex.org/keywords/water-cycle","display_name":"Water cycle","score":0.5234106183052063},{"id":"https://openalex.org/keywords/atmospheric-sciences","display_name":"Atmospheric sciences","score":0.5147145390510559},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.4926913380622864},{"id":"https://openalex.org/keywords/phenology","display_name":"Phenology","score":0.4265294373035431},{"id":"https://openalex.org/keywords/climatology","display_name":"Climatology","score":0.35146474838256836},{"id":"https://openalex.org/keywords/hydrology","display_name":"Hydrology (agriculture)","score":0.32100898027420044},{"id":"https://openalex.org/keywords/photosynthesis","display_name":"Photosynthesis","score":0.1566218137741089},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.14959600567817688},{"id":"https://openalex.org/keywords/agronomy","display_name":"Agronomy","score":0.13986298441886902},{"id":"https://openalex.org/keywords/ecology","display_name":"Ecology","score":0.11571785807609558},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.10586810111999512},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.09470593929290771}],"concepts":[{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.8125426173210144},{"id":"https://openalex.org/C176783924","wikidata":"https://www.wikidata.org/wiki/Q828158","display_name":"Evapotranspiration","level":2,"score":0.8086659908294678},{"id":"https://openalex.org/C24939127","wikidata":"https://www.wikidata.org/wiki/Q373499","display_name":"Water content","level":2,"score":0.7450838685035706},{"id":"https://openalex.org/C157517311","wikidata":"https://www.wikidata.org/wiki/Q167980","display_name":"Transpiration","level":3,"score":0.7049186825752258},{"id":"https://openalex.org/C2776133958","wikidata":"https://www.wikidata.org/wiki/Q7918366","display_name":"Vegetation (pathology)","level":2,"score":0.6938605904579163},{"id":"https://openalex.org/C107054158","wikidata":"https://www.wikidata.org/wiki/Q25257","display_name":"Precipitation","level":2,"score":0.5965309143066406},{"id":"https://openalex.org/C133830359","wikidata":"https://www.wikidata.org/wiki/Q81041","display_name":"Water cycle","level":2,"score":0.5234106183052063},{"id":"https://openalex.org/C91586092","wikidata":"https://www.wikidata.org/wiki/Q757520","display_name":"Atmospheric sciences","level":1,"score":0.5147145390510559},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.4926913380622864},{"id":"https://openalex.org/C51417038","wikidata":"https://www.wikidata.org/wiki/Q272737","display_name":"Phenology","level":2,"score":0.4265294373035431},{"id":"https://openalex.org/C49204034","wikidata":"https://www.wikidata.org/wiki/Q52139","display_name":"Climatology","level":1,"score":0.35146474838256836},{"id":"https://openalex.org/C76886044","wikidata":"https://www.wikidata.org/wiki/Q2883300","display_name":"Hydrology (agriculture)","level":2,"score":0.32100898027420044},{"id":"https://openalex.org/C183688256","wikidata":"https://www.wikidata.org/wiki/Q11982","display_name":"Photosynthesis","level":2,"score":0.1566218137741089},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.14959600567817688},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.13986298441886902},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.11571785807609558},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.10586810111999512},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.09470593929290771},{"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/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"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/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/igarss39084.2020.9324061","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss39084.2020.9324061","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/6","score":0.5,"display_name":"Clean water and sanitation"}],"awards":[{"id":"https://openalex.org/G8762431790","display_name":null,"funder_award_id":"80NSSC17K0115,80NSSC18K0980,80NSSC19M0114","funder_id":"https://openalex.org/F4320306101","funder_display_name":"National Aeronautics and Space Administration"}],"funders":[{"id":"https://openalex.org/F4320306101","display_name":"National Aeronautics and Space Administration","ror":"https://ror.org/027ka1x80"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W1975768883","https://openalex.org/W1980320347","https://openalex.org/W2019493625","https://openalex.org/W2061003790","https://openalex.org/W2074303671","https://openalex.org/W2112084935","https://openalex.org/W2119132330","https://openalex.org/W2121745948","https://openalex.org/W2135685863","https://openalex.org/W2144378718","https://openalex.org/W2151303612","https://openalex.org/W2159625559","https://openalex.org/W2257122937","https://openalex.org/W2297128263","https://openalex.org/W2477729891","https://openalex.org/W2897297707","https://openalex.org/W2948942878"],"related_works":["https://openalex.org/W2060812994","https://openalex.org/W2365197650","https://openalex.org/W2373524250","https://openalex.org/W2102874016","https://openalex.org/W2062370993","https://openalex.org/W4210242842","https://openalex.org/W2020799038","https://openalex.org/W2586359268","https://openalex.org/W2000196400","https://openalex.org/W1979723077"],"abstract_inverted_index":{"Evapotranspiration":[0],"(ET)":[1],"is":[2],"a":[3,29,44,81,160],"key":[4],"link":[5],"between":[6,124],"the":[7,60,71,99,151],"global":[8,48,77,87,125],"carbon,":[9],"water":[10,57],"and":[11,20,36,118,168],"energy":[12],"cycles.":[13],"ET":[14,23,49,78,88,95,100,126],"generally":[15],"occurs":[16],"from":[17,70],"soil,":[18],"vegetation":[19,41,116,166],"intercepted":[21],"precipitation.":[22],"components":[24],"are":[25],"commonly":[26],"estimated":[27],"using":[28,80,92],"combination":[30],"of":[31,115,154],"variables,":[32],"including":[33],"meteorology,":[34],"vegetation,":[35],"soil":[37,51,67,156],"moisture":[38,68,157],"conditions.":[39],"Although":[40],"transpiration":[42],"has":[43],"major":[45],"effect":[46],"on":[47],"variations,":[50],"evaporation":[52],"can":[53],"also":[54],"contribute":[55],"significant":[56],"loss":[58],"to":[59,75,110,147],"atmosphere.":[61],"This":[62],"study":[63],"utilizes":[64],"satellite":[65,113],"derived":[66],"data":[69],"NASA":[72],"SMAP":[73],"mission":[74],"produce":[76],"estimates":[79,101],"modified":[82],"Penman":[83],"Monteith":[84],"algorithm.":[85],"The":[86,122,139],"results":[89,142],"were":[90,102],"assessed":[91],"other":[93,111],"available":[94],"benchmarks.":[96],"In":[97],"addition,":[98],"evaluated":[103],"for":[104],"monitoring":[105],"spring":[106,140],"onset":[107,141],"in":[108,136,164],"relation":[109],"complementary":[112],"observations":[114],"phenology":[117],"landscape":[119,144],"freeze/thaw":[120],"metrics.":[121],"comparisons":[123],"products":[127],"showed":[128,143],"similar":[129],"latitudinal":[130],"variation,":[131],"but":[132],"with":[133],"larger":[134],"differences":[135],"tropical":[137],"rainforests.":[138],"thawing":[145],"related":[146],"rising":[148],"temperature":[149],"facilitating":[150],"new":[152],"release":[153],"plant-available":[155],"that":[158],"accompanies":[159],"dramatic":[161],"seasonal":[162],"rise":[163],"both":[165],"photosynthesis":[167],"ET.":[169]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}