{"id":"https://openalex.org/W2601662289","doi":"https://doi.org/10.3390/rs9030292","title":"Preliminary Evaluation of the SMAP Radiometer Soil Moisture Product over China Using In Situ Data","display_name":"Preliminary Evaluation of the SMAP Radiometer Soil Moisture Product over China Using In Situ Data","publication_year":2017,"publication_date":"2017-03-20","ids":{"openalex":"https://openalex.org/W2601662289","doi":"https://doi.org/10.3390/rs9030292","mag":"2601662289"},"language":"en","primary_location":{"id":"doi:10.3390/rs9030292","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs9030292","pdf_url":"https://www.mdpi.com/2072-4292/9/3/292/pdf?version=1490002007","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2072-4292/9/3/292/pdf?version=1490002007","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5102740677","display_name":"Yayong Sun","orcid":"https://orcid.org/0000-0001-6116-8825"},"institutions":[{"id":"https://openalex.org/I4210155611","display_name":"Ministry of Water Resources of the People's Republic of China","ror":"https://ror.org/04e698d63","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210155611"]},{"id":"https://openalex.org/I4210092032","display_name":"China Institute of Water Resources and Hydropower Research","ror":"https://ror.org/00m4czf33","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210092032"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yayong Sun","raw_affiliation_strings":["Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China","State Key Laboratory of Simulation and Regulation of Water Cycles in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China"],"affiliations":[{"raw_affiliation_string":"Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China","institution_ids":["https://openalex.org/I4210092032","https://openalex.org/I4210155611"]},{"raw_affiliation_string":"State Key Laboratory of Simulation and Regulation of Water Cycles in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China","institution_ids":["https://openalex.org/I4210092032"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108702553","display_name":"Shifeng Huang","orcid":"https://orcid.org/0009-0007-1360-7468"},"institutions":[{"id":"https://openalex.org/I4210155611","display_name":"Ministry of Water Resources of the People's Republic of China","ror":"https://ror.org/04e698d63","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210155611"]},{"id":"https://openalex.org/I4210092032","display_name":"China Institute of Water Resources and Hydropower Research","ror":"https://ror.org/00m4czf33","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210092032"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Shifeng Huang","raw_affiliation_strings":["Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China"],"affiliations":[{"raw_affiliation_string":"Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China","institution_ids":["https://openalex.org/I4210092032","https://openalex.org/I4210155611"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100661616","display_name":"Jianwei Ma","orcid":"https://orcid.org/0000-0002-9457-2872"},"institutions":[{"id":"https://openalex.org/I4210155611","display_name":"Ministry of Water Resources of the People's Republic of China","ror":"https://ror.org/04e698d63","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210155611"]},{"id":"https://openalex.org/I4210092032","display_name":"China Institute of Water Resources and Hydropower Research","ror":"https://ror.org/00m4czf33","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210092032"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jianwei Ma","raw_affiliation_strings":["Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China"],"affiliations":[{"raw_affiliation_string":"Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China","institution_ids":["https://openalex.org/I4210092032","https://openalex.org/I4210155611"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5070119395","display_name":"Jiren Li","orcid":null},"institutions":[{"id":"https://openalex.org/I4210155611","display_name":"Ministry of Water Resources of the People's Republic of China","ror":"https://ror.org/04e698d63","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210155611"]},{"id":"https://openalex.org/I4210092032","display_name":"China Institute of Water Resources and Hydropower Research","ror":"https://ror.org/00m4czf33","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210092032"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jiren Li","raw_affiliation_strings":["Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China"],"affiliations":[{"raw_affiliation_string":"Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China","institution_ids":["https://openalex.org/I4210092032","https://openalex.org/I4210155611"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5037967253","display_name":"Xiaotao Li","orcid":"https://orcid.org/0000-0002-4754-967X"},"institutions":[{"id":"https://openalex.org/I4210092032","display_name":"China Institute of Water Resources and Hydropower Research","ror":"https://ror.org/00m4czf33","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210092032"]},{"id":"https://openalex.org/I4210155611","display_name":"Ministry of Water Resources of the People's Republic of China","ror":"https://ror.org/04e698d63","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210155611"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiaotao Li","raw_affiliation_strings":["Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China"],"affiliations":[{"raw_affiliation_string":"Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China","institution_ids":["https://openalex.org/I4210092032","https://openalex.org/I4210155611"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101628942","display_name":"Hui Wang","orcid":"https://orcid.org/0000-0002-0093-0510"},"institutions":[{"id":"https://openalex.org/I4210092032","display_name":"China Institute of Water Resources and Hydropower Research","ror":"https://ror.org/00m4czf33","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210092032"]},{"id":"https://openalex.org/I4210155611","display_name":"Ministry of Water Resources of the People's Republic of China","ror":"https://ror.org/04e698d63","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210155611"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Hui Wang","raw_affiliation_strings":["Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China"],"affiliations":[{"raw_affiliation_string":"Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China","institution_ids":["https://openalex.org/I4210092032","https://openalex.org/I4210155611"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100320972","display_name":"Sheng Chen","orcid":"https://orcid.org/0000-0001-7210-6320"},"institutions":[{"id":"https://openalex.org/I4210092032","display_name":"China Institute of Water Resources and Hydropower Research","ror":"https://ror.org/00m4czf33","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210092032"]},{"id":"https://openalex.org/I4210155611","display_name":"Ministry of Water Resources of the People's Republic of China","ror":"https://ror.org/04e698d63","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210155611"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Sheng Chen","raw_affiliation_strings":["Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China"],"affiliations":[{"raw_affiliation_string":"Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China","institution_ids":["https://openalex.org/I4210092032","https://openalex.org/I4210155611"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5019750486","display_name":"Wenbin Zang","orcid":null},"institutions":[{"id":"https://openalex.org/I4210155611","display_name":"Ministry of Water Resources of the People's Republic of China","ror":"https://ror.org/04e698d63","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210155611"]},{"id":"https://openalex.org/I4210092032","display_name":"China Institute of Water Resources and Hydropower Research","ror":"https://ror.org/00m4czf33","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210092032"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Wenbin Zang","raw_affiliation_strings":["Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China"],"affiliations":[{"raw_affiliation_string":"Research Center on Flood and Drought Disaster Reduction of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China","institution_ids":["https://openalex.org/I4210092032","https://openalex.org/I4210155611"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":8,"corresponding_author_ids":["https://openalex.org/A5108702553"],"corresponding_institution_ids":["https://openalex.org/I4210092032","https://openalex.org/I4210155611"],"apc_list":{"value":2500,"currency":"CHF","value_usd":2707},"apc_paid":{"value":2500,"currency":"CHF","value_usd":2707},"fwci":1.9955,"has_fulltext":true,"cited_by_count":32,"citation_normalized_percentile":{"value":0.84614543,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":99},"biblio":{"volume":"9","issue":"3","first_page":"292","last_page":"292"},"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":0.9997000098228455,"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/T10801","display_name":"Synthetic Aperture Radar (SAR) Applications and Techniques","score":0.9916999936103821,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/radiometer","display_name":"Radiometer","score":0.8326420783996582},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.7922936677932739},{"id":"https://openalex.org/keywords/water-content","display_name":"Water content","score":0.6709302663803101},{"id":"https://openalex.org/keywords/anomaly","display_name":"Anomaly (physics)","score":0.595872700214386},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.5895700454711914},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.5647580027580261},{"id":"https://openalex.org/keywords/moisture","display_name":"Moisture","score":0.47563600540161133},{"id":"https://openalex.org/keywords/mean-squared-error","display_name":"Mean squared error","score":0.41509634256362915},{"id":"https://openalex.org/keywords/soil-science","display_name":"Soil science","score":0.327323853969574},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.2941652834415436},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.13879680633544922},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.09635642170906067},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.08544731140136719}],"concepts":[{"id":"https://openalex.org/C120189094","wikidata":"https://www.wikidata.org/wiki/Q850281","display_name":"Radiometer","level":2,"score":0.8326420783996582},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.7922936677932739},{"id":"https://openalex.org/C24939127","wikidata":"https://www.wikidata.org/wiki/Q373499","display_name":"Water content","level":2,"score":0.6709302663803101},{"id":"https://openalex.org/C12997251","wikidata":"https://www.wikidata.org/wiki/Q567560","display_name":"Anomaly (physics)","level":2,"score":0.595872700214386},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.5895700454711914},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.5647580027580261},{"id":"https://openalex.org/C176864760","wikidata":"https://www.wikidata.org/wiki/Q217651","display_name":"Moisture","level":2,"score":0.47563600540161133},{"id":"https://openalex.org/C139945424","wikidata":"https://www.wikidata.org/wiki/Q1940696","display_name":"Mean squared error","level":2,"score":0.41509634256362915},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","level":1,"score":0.327323853969574},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.2941652834415436},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.13879680633544922},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.09635642170906067},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.08544731140136719},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C26873012","wikidata":"https://www.wikidata.org/wiki/Q214781","display_name":"Condensed matter physics","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/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","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/C187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/rs9030292","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs9030292","pdf_url":"https://www.mdpi.com/2072-4292/9/3/292/pdf?version=1490002007","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:919ecac08ec147e8915eafc3b5ba21ba","is_oa":true,"landing_page_url":"https://doaj.org/article/919ecac08ec147e8915eafc3b5ba21ba","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Remote Sensing, Vol 9, Iss 3, p 292 (2017)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2072-4292/9/3/292/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/rs9030292","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Remote Sensing","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/rs9030292","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs9030292","pdf_url":"https://www.mdpi.com/2072-4292/9/3/292/pdf?version=1490002007","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Life in Land","id":"https://metadata.un.org/sdg/15","score":0.75}],"awards":[{"id":"https://openalex.org/G1121271761","display_name":null,"funder_award_id":"Program","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G1231421488","display_name":null,"funder_award_id":"under","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G1804545627","display_name":null,"funder_award_id":"41601569","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G1932736159","display_name":null,"funder_award_id":"5142010501","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G2087396116","display_name":null,"funder_award_id":"China","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G2392644826","display_name":null,"funder_award_id":"08-Y30B07-9001-13/15","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G3261152863","display_name":null,"funder_award_id":"51420105014","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G3317480652","display_name":null,"funder_award_id":"Science","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G391238517","display_name":null,"funder_award_id":", and","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5994120800","display_name":null,"funder_award_id":"Natural","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7655145812","display_name":null,"funder_award_id":"41501415","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/F4320332375","display_name":"Jet Propulsion Laboratory","ror":"https://ror.org/027k65916"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2601662289.pdf","grobid_xml":"https://content.openalex.org/works/W2601662289.grobid-xml"},"referenced_works_count":52,"referenced_works":["https://openalex.org/W1598793890","https://openalex.org/W1830139548","https://openalex.org/W1977473269","https://openalex.org/W1991099778","https://openalex.org/W2001575990","https://openalex.org/W2002116577","https://openalex.org/W2013049148","https://openalex.org/W2019828488","https://openalex.org/W2020357506","https://openalex.org/W2024192068","https://openalex.org/W2025412792","https://openalex.org/W2039348932","https://openalex.org/W2045176421","https://openalex.org/W2047366175","https://openalex.org/W2048336910","https://openalex.org/W2055976274","https://openalex.org/W2063422594","https://openalex.org/W2072567364","https://openalex.org/W2092532914","https://openalex.org/W2096569581","https://openalex.org/W2100401723","https://openalex.org/W2105753217","https://openalex.org/W2107437432","https://openalex.org/W2111201967","https://openalex.org/W2117255900","https://openalex.org/W2117858619","https://openalex.org/W2123744475","https://openalex.org/W2130037298","https://openalex.org/W2133831422","https://openalex.org/W2135048240","https://openalex.org/W2141219203","https://openalex.org/W2147241431","https://openalex.org/W2166609657","https://openalex.org/W2167962096","https://openalex.org/W2185905748","https://openalex.org/W2206993828","https://openalex.org/W2316416257","https://openalex.org/W2338693065","https://openalex.org/W2348428089","https://openalex.org/W2399809112","https://openalex.org/W2438957046","https://openalex.org/W2499818531","https://openalex.org/W2566961029","https://openalex.org/W2606762649","https://openalex.org/W3082114795","https://openalex.org/W6638597418","https://openalex.org/W6655465500","https://openalex.org/W6656879434","https://openalex.org/W6676835709","https://openalex.org/W6686593275","https://openalex.org/W6723956948","https://openalex.org/W6987408016"],"related_works":["https://openalex.org/W2113351631","https://openalex.org/W1971795288","https://openalex.org/W2103831930","https://openalex.org/W1993916247","https://openalex.org/W2156680019","https://openalex.org/W1964887290","https://openalex.org/W4232061995","https://openalex.org/W2189081003","https://openalex.org/W2096077388","https://openalex.org/W1971248858"],"abstract_inverted_index":{"The":[0,93,148,183,212],"Soil":[1,223],"Moisture":[2],"Active":[3],"Passive":[4],"(SMAP)":[5],"satellite":[6],"makes":[7],"coincident":[8],"global":[9],"measurements":[10,76],"of":[11,55,104,169,185,253,265],"soil":[12,36,59,96,106,110,155,189,238,268],"moisture":[13,37,60,97,107,111,156,190,239,269],"using":[14,72],"an":[15,20],"L-band":[16,21,33],"radar":[17],"instrument":[18],"and":[19,47,89,108,117,137,172,179,208,216,227,273],"radiometer.":[22],"It":[23],"is":[24],"crucial":[25,230],"to":[26,233,246],"evaluate":[27],"the":[28,31,52,56,109,138,145,152,162,186,199,221,234,237,247,250,254,263,266,280],"errors":[29],"in":[30,44,74,113,144,163,194,198,217,236,271],"newest":[32],"SMAP":[34,57,94,153,187],"satellite-derived":[35],"products,":[38],"before":[39],"they":[40],"are":[41,229],"routinely":[42],"used":[43,143],"scientific":[45],"research":[46],"applications.":[48],"This":[49,258],"study":[50,259],"represents":[51],"first":[53],"evaluation":[54,69],"radiometer":[58],"product":[61,98,157,191,270],"over":[62,214,249],"China.":[63],"In":[64],"this":[65],"paper,":[66],"a":[67,276],"preliminary":[68],"was":[70,99],"performed":[71],"sparse":[73],"situ":[75,164],"from":[77],"655":[78],"China":[79,210,219,256,272],"Meteorological":[80],"Administration":[81],"(CMA)":[82],"monitoring":[83],"stations":[84],"between":[85],"1":[86],"April":[87],"2015":[88],"31":[90],"August":[91],"2016.":[92],"radiometer-derived":[95,154],"evaluated":[100],"against":[101],"two":[102],"schemes":[103],"original":[105,177],"anomaly":[112,180],"different":[114],"geographical":[115],"zones":[116],"land":[118],"cover":[119],"types.":[120],"Four":[121],"performance":[122],"metrics,":[123],"i.e.,":[124],"bias,":[125],"root":[126,132],"mean":[127,133],"square":[128,134],"error":[129,135,235],"(RMSE),":[130],"unbiased":[131],"(ubRMSE),":[136],"correlation":[139],"coefficient":[140],"(R),":[141],"were":[142,192,220],"accuracy":[146],"evaluation.":[147],"results":[149],"indicated":[150],"that":[151],"agreed":[158],"relatively":[159],"well":[160],"with":[161,166],"measurements,":[165],"ubRMSE":[167],"values":[168,184],"0.058":[170],"cm3\u00b7cm\u22123":[171,174],"0.039":[173],"based":[175],"on":[176],"data":[178],"data,":[181],"respectively.":[182],"radiometer-based":[188],"overestimated":[193],"wet":[195],"areas,":[196],"especially":[197],"Southwest":[200],"China,":[201,203,205,207],"South":[202],"Southeast":[204],"East":[206,255],"Central":[209],"zones.":[211],"accuracies":[213],"croplands":[215],"Northeast":[218],"worst.":[222],"moisture,":[224],"surface":[225],"roughness,":[226],"vegetation":[228],"factors":[231],"contributing":[232],"product.":[240],"Moreover,":[241],"radio":[242],"frequency":[243],"interference":[244],"contributes":[245],"overestimation":[248],"northern":[251],"portion":[252],"zone.":[257],"provides":[260],"guidelines":[261],"for":[262,278],"application":[264],"SMAP-derived":[267],"acts":[274],"as":[275],"reference":[277],"improving":[279],"retrieval":[281],"algorithm.":[282]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":7},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":5},{"year":2021,"cited_by_count":4},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":3},{"year":2017,"cited_by_count":3}],"updated_date":"2026-03-18T14:38:29.013473","created_date":"2025-10-10T00:00:00"}
