{"id":"https://openalex.org/W2083311459","doi":"https://doi.org/10.1109/igarss.2011.6049669","title":"The NASA Soil Moisture Active Passive (SMAP) mission formulation","display_name":"The NASA Soil Moisture Active Passive (SMAP) mission formulation","publication_year":2011,"publication_date":"2011-07-01","ids":{"openalex":"https://openalex.org/W2083311459","doi":"https://doi.org/10.1109/igarss.2011.6049669","mag":"2083311459"},"language":"en","primary_location":{"id":"doi:10.1109/igarss.2011.6049669","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2011.6049669","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 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/A5085491613","display_name":"Dara Entekhabi","orcid":"https://orcid.org/0000-0002-8362-4761"},"institutions":[{"id":"https://openalex.org/I63966007","display_name":"Massachusetts Institute of Technology","ror":"https://ror.org/042nb2s44","country_code":"US","type":"education","lineage":["https://openalex.org/I63966007"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Dara Entekhabi","raw_affiliation_strings":["Massachusetts Institute of Technology, Cambridge, MA, USA","Massachusetts Institute of Technology, Cambridge,02139, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Massachusetts Institute of Technology, Cambridge, MA, USA","institution_ids":["https://openalex.org/I63966007"]},{"raw_affiliation_string":"Massachusetts Institute of Technology, Cambridge,02139, USA","institution_ids":["https://openalex.org/I63966007"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108353611","display_name":"E. G. Njoku","orcid":"https://orcid.org/0009-0007-8460-9823"},"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":"Eni Njoku","raw_affiliation_strings":["Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA","Jet Propulsion Laboratory, California Institute of Technology, Pasadena, 91109, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA","institution_ids":["https://openalex.org/I1334627681"]},{"raw_affiliation_string":"Jet Propulsion Laboratory, California Institute of Technology, Pasadena, 91109, USA","institution_ids":["https://openalex.org/I1334627681"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5015820551","display_name":"Peggy O\u2019Neill","orcid":"https://orcid.org/0000-0002-2596-8670"},"institutions":[{"id":"https://openalex.org/I1306266525","display_name":"Goddard Space Flight Center","ror":"https://ror.org/0171mag52","country_code":"US","type":"facility","lineage":["https://openalex.org/I1306266525","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Peggy O'Neill","raw_affiliation_strings":["NASA Goddasd Space Flight Center, Greenbelt, MD, USA","NASA Goddard Spaceflight Center, Greenbelt, MD, 20771, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NASA Goddasd Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]},{"raw_affiliation_string":"NASA Goddard Spaceflight Center, Greenbelt, MD, 20771, USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5024583612","display_name":"Kent Kellogg","orcid":null},"institutions":[{"id":"https://openalex.org/I1306266525","display_name":"Goddard Space Flight Center","ror":"https://ror.org/0171mag52","country_code":"US","type":"facility","lineage":["https://openalex.org/I1306266525","https://openalex.org/I4210124779"]},{"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":"Kent Kellogg","raw_affiliation_strings":["Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA","NASA Goddard Spaceflight Center, Greenbelt, MD, 20771, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA","institution_ids":["https://openalex.org/I1334627681"]},{"raw_affiliation_string":"NASA Goddard Spaceflight Center, Greenbelt, MD, 20771, USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5079732054","display_name":"Jared Entin","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Jared Entin","raw_affiliation_strings":["Washington DC, DC, USA","NASA Headquarters , Washington , DC , 20546 , USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Washington DC, DC, USA","institution_ids":[]},{"raw_affiliation_string":"NASA Headquarters , Washington , DC , 20546 , USA","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.0879,"has_fulltext":false,"cited_by_count":18,"citation_normalized_percentile":{"value":0.79311828,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"2302","last_page":"2305"},"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/T11609","display_name":"Geophysical Methods and Applications","score":0.9929999709129333,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11234","display_name":"Precipitation Measurement and Analysis","score":0.9866999983787537,"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/radiometer","display_name":"Radiometer","score":0.7573655843734741},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.6553506851196289},{"id":"https://openalex.org/keywords/radar","display_name":"Radar","score":0.6539599895477295},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.6362028121948242},{"id":"https://openalex.org/keywords/water-content","display_name":"Water content","score":0.6110547184944153},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.5209025740623474},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.4893743395805359},{"id":"https://openalex.org/keywords/l-band","display_name":"L band","score":0.4555146098136902},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.32123059034347534},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.1860254406929016},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.1444968581199646},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.14029988646507263},{"id":"https://openalex.org/keywords/aerospace-engineering","display_name":"Aerospace engineering","score":0.12917393445968628}],"concepts":[{"id":"https://openalex.org/C120189094","wikidata":"https://www.wikidata.org/wiki/Q850281","display_name":"Radiometer","level":2,"score":0.7573655843734741},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.6553506851196289},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.6539599895477295},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.6362028121948242},{"id":"https://openalex.org/C24939127","wikidata":"https://www.wikidata.org/wiki/Q373499","display_name":"Water content","level":2,"score":0.6110547184944153},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.5209025740623474},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.4893743395805359},{"id":"https://openalex.org/C133969743","wikidata":"https://www.wikidata.org/wiki/Q2362353","display_name":"L band","level":2,"score":0.4555146098136902},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.32123059034347534},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.1860254406929016},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.1444968581199646},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.14029988646507263},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.12917393445968628},{"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/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/igarss.2011.6049669","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2011.6049669","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"},{"id":"pmh:oai:casi.ntrs.nasa.gov:20110011773","is_oa":false,"landing_page_url":"http://hdl.handle.net/2060/20110011773","pdf_url":null,"source":{"id":"https://openalex.org/S4377196257","display_name":"NASA STI Repository (National Aeronautics and Space Administration)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210124779","host_organization_name":"National Aeronautics and Space Administration","host_organization_lineage":["https://openalex.org/I4210124779"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"CASI","raw_type":"GSFC.CPR.4274.2011"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/15","score":0.4099999964237213,"display_name":"Life in Land"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":1,"referenced_works":["https://openalex.org/W2039348932"],"related_works":["https://openalex.org/W2378441783","https://openalex.org/W2174447425","https://openalex.org/W824566898","https://openalex.org/W2028613588","https://openalex.org/W2022057897","https://openalex.org/W3129565861","https://openalex.org/W2007484294","https://openalex.org/W1983201964","https://openalex.org/W1983927866","https://openalex.org/W2093352239"],"abstract_inverted_index":{"The":[0,28,43,79,122,134],"Soil":[1],"Moisture":[2],"Active":[3],"Passive":[4],"(SMAP)":[5],"mission":[6,30,45],"is":[7,31,37,46],"one":[8],"of":[9,55,130],"the":[10,15,127],"first-tier":[11],"projects":[12],"recommended":[13],"by":[14],"U.S.":[16],"National":[17],"Research":[18],"Council":[19],"Committee":[20],"on":[21],"Earth":[22],"Science":[23],"and":[24,35,51,58,73,82,105,142],"Applications":[25],"from":[26],"Space.":[27],"SMAP":[29,44],"in":[32,41,139,152],"formulation":[33],"phase":[34],"it":[36],"scheduled":[38],"for":[39],"launch":[40],"2014.":[42],"designed":[47],"to":[48,88,101],"produce":[49],"high-resolution":[50],"accurate":[52],"global":[53,90],"mapping":[54,93],"soil":[56,91,118],"moisture":[57,92],"its":[59],"freeze/thaw":[60,132],"state":[61],"using":[62],"an":[63,68,74],"instrument":[64],"architecture":[65],"that":[66],"incorporates":[67],"L-band":[69,75],"(1.26":[70],"GHz)":[71,77],"radar":[72,81,123],"(1.41":[76],"radiometer.":[78],"simultaneous":[80],"radiometer":[83],"measurements":[84,124],"will":[85],"be":[86],"combined":[87],"derive":[89],"at":[94],"9":[95],"[km]":[96],"resolution":[97],"with":[98],"a":[99],"2":[100],"3":[102],"days":[103],"revisit":[104],"0.04":[106],"[cm":[107],"<sup":[108,112],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[109,113],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">3</sup>":[110],"cm":[111],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">-3</sup>":[114],"]":[115],"(1":[116],"sigma)":[117],"water":[119],"content":[120],"accuracy.":[121],"also":[125],"allow":[126],"binary":[128],"detection":[129],"surface":[131],"state.":[133],"project":[135],"science":[136,145],"goals":[137],"address":[138],"water,":[140],"energy":[141],"carbon":[143],"cycle":[144],"as":[146,148],"well":[147],"provide":[149],"improved":[150],"capabilities":[151],"natural":[153],"hazards":[154],"applications.":[155]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":2},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}