{"id":"https://openalex.org/W3092927375","doi":"https://doi.org/10.1016/j.jag.2020.102240","title":"Toward operational validation systems for global satellite-based terrestrial essential climate variables","display_name":"Toward operational validation systems for global satellite-based terrestrial essential climate variables","publication_year":2020,"publication_date":"2020-10-16","ids":{"openalex":"https://openalex.org/W3092927375","doi":"https://doi.org/10.1016/j.jag.2020.102240","mag":"3092927375"},"language":"en","primary_location":{"id":"doi:10.1016/j.jag.2020.102240","is_oa":true,"landing_page_url":"https://doi.org/10.1016/j.jag.2020.102240","pdf_url":null,"source":{"id":"https://openalex.org/S4210179989","display_name":"International Journal of Applied Earth Observation and Geoinformation","issn_l":"1569-8432","issn":["1569-8432","1872-826X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Applied Earth Observation and Geoinformation","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.1016/j.jag.2020.102240","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5081221460","display_name":"Bagher Bayat","orcid":"https://orcid.org/0000-0002-7761-9544"},"institutions":[{"id":"https://openalex.org/I171892758","display_name":"Forschungszentrum J\u00fclich","ror":"https://ror.org/02nv7yv05","country_code":"DE","type":"facility","lineage":["https://openalex.org/I1305996414","https://openalex.org/I171892758"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Bagher Bayat","raw_affiliation_strings":["Institute of Bio- and Geosciences: Agrosphere (IBG-3), Forschungszentrum J\u00fclich GmbH, 52425, J\u00fclich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Bio- and Geosciences: Agrosphere (IBG-3), Forschungszentrum J\u00fclich GmbH, 52425, J\u00fclich, Germany","institution_ids":["https://openalex.org/I171892758"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5050480432","display_name":"Fernando Camacho","orcid":"https://orcid.org/0000-0001-8679-1912"},"institutions":[{"id":"https://openalex.org/I2801097182","display_name":"Parc Cient\u00edfic de la Universitat de Val\u00e8ncia","ror":"https://ror.org/04rb60x98","country_code":"ES","type":"education","lineage":["https://openalex.org/I2801097182"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Fernando Camacho","raw_affiliation_strings":["Earth Observation Laboratory (EOLAB), Parc Cientific University of Valencia, C/ Catedr\u00e0tic Agust\u00edn Escardino, 9, 46980, Paterna, Valencia, Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Earth Observation Laboratory (EOLAB), Parc Cientific University of Valencia, C/ Catedr\u00e0tic Agust\u00edn Escardino, 9, 46980, Paterna, Valencia, Spain","institution_ids":["https://openalex.org/I2801097182"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056041618","display_name":"Jaime Nickeson","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/I4210144891","display_name":"Science Systems and Applications (United States)","ror":"https://ror.org/03xec1444","country_code":"US","type":"company","lineage":["https://openalex.org/I4210144891"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jaime Nickeson","raw_affiliation_strings":["NASA Goddard Space Flight Center, 8800 Greenbelt Rd., Greenbelt, MD, 20771, USA","Science Systems and Applications, Inc., 10210 Greenbelt Rd, Lanham, MD, 20706, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, 8800 Greenbelt Rd., Greenbelt, MD, 20771, USA","institution_ids":["https://openalex.org/I1306266525"]},{"raw_affiliation_string":"Science Systems and Applications, Inc., 10210 Greenbelt Rd, Lanham, MD, 20706, USA","institution_ids":["https://openalex.org/I4210144891"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5025247468","display_name":"Michael H. Cosh","orcid":"https://orcid.org/0000-0003-4776-1918"},"institutions":[{"id":"https://openalex.org/I1312222531","display_name":"Agricultural Research Service","ror":"https://ror.org/02d2m2044","country_code":"US","type":"government","lineage":["https://openalex.org/I1312222531","https://openalex.org/I1336096307"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Michael Cosh","raw_affiliation_strings":["USDA-ARS Hydrology and Remote Sensing Laboratory, 10300 Baltimore Ave, Beltsville, MD, 20705, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"USDA-ARS Hydrology and Remote Sensing Laboratory, 10300 Baltimore Ave, Beltsville, MD, 20705, USA","institution_ids":["https://openalex.org/I1312222531"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5046850075","display_name":"John Bolten","orcid":"https://orcid.org/0000-0002-1101-9845"},"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":"John Bolten","raw_affiliation_strings":["NASA Goddard Space Flight Center, 8800 Greenbelt Rd., Greenbelt, MD, 20771, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, 8800 Greenbelt Rd., Greenbelt, MD, 20771, USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5028331853","display_name":"Harry Vereecken","orcid":"https://orcid.org/0000-0002-8051-8517"},"institutions":[{"id":"https://openalex.org/I171892758","display_name":"Forschungszentrum J\u00fclich","ror":"https://ror.org/02nv7yv05","country_code":"DE","type":"facility","lineage":["https://openalex.org/I1305996414","https://openalex.org/I171892758"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Harry Vereecken","raw_affiliation_strings":["Institute of Bio- and Geosciences: Agrosphere (IBG-3), Forschungszentrum J\u00fclich GmbH, 52425, J\u00fclich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Bio- and Geosciences: Agrosphere (IBG-3), Forschungszentrum J\u00fclich GmbH, 52425, J\u00fclich, Germany","institution_ids":["https://openalex.org/I171892758"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5079849669","display_name":"Carsten Montzka","orcid":"https://orcid.org/0000-0003-0812-8570"},"institutions":[{"id":"https://openalex.org/I171892758","display_name":"Forschungszentrum J\u00fclich","ror":"https://ror.org/02nv7yv05","country_code":"DE","type":"facility","lineage":["https://openalex.org/I1305996414","https://openalex.org/I171892758"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Carsten Montzka","raw_affiliation_strings":["Institute of Bio- and Geosciences: Agrosphere (IBG-3), Forschungszentrum J\u00fclich GmbH, 52425, J\u00fclich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Bio- and Geosciences: Agrosphere (IBG-3), Forschungszentrum J\u00fclich GmbH, 52425, J\u00fclich, Germany","institution_ids":["https://openalex.org/I171892758"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5081221460"],"corresponding_institution_ids":["https://openalex.org/I171892758"],"apc_list":{"value":2250,"currency":"USD","value_usd":2250},"apc_paid":{"value":1970,"currency":"EUR","value_usd":2124},"fwci":3.8028,"has_fulltext":false,"cited_by_count":67,"citation_normalized_percentile":{"value":0.93726674,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":97,"max":100},"biblio":{"volume":"95","issue":null,"first_page":"102240","last_page":"102240"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11312","display_name":"Soil Moisture and Remote Sensing","score":0.9993000030517578,"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"}},"topics":[{"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/T10766","display_name":"Urban Heat Island Mitigation","score":0.9986000061035156,"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/T10029","display_name":"Climate variability and models","score":0.9979000091552734,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.6217968463897705},{"id":"https://openalex.org/keywords/terrestrial-ecosystem","display_name":"Terrestrial ecosystem","score":0.4415718913078308},{"id":"https://openalex.org/keywords/comparability","display_name":"Comparability","score":0.43956291675567627},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.4270448088645935},{"id":"https://openalex.org/keywords/scale","display_name":"Scale (ratio)","score":0.4216727614402771},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.3642723560333252},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.35885536670684814},{"id":"https://openalex.org/keywords/environmental-resource-management","display_name":"Environmental resource management","score":0.35759469866752625},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.28394097089767456},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.14026954770088196},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.11786511540412903},{"id":"https://openalex.org/keywords/ecology","display_name":"Ecology","score":0.09878849983215332}],"concepts":[{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.6217968463897705},{"id":"https://openalex.org/C65680412","wikidata":"https://www.wikidata.org/wiki/Q3718755","display_name":"Terrestrial ecosystem","level":3,"score":0.4415718913078308},{"id":"https://openalex.org/C197947376","wikidata":"https://www.wikidata.org/wiki/Q5155608","display_name":"Comparability","level":2,"score":0.43956291675567627},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.4270448088645935},{"id":"https://openalex.org/C2778755073","wikidata":"https://www.wikidata.org/wiki/Q10858537","display_name":"Scale (ratio)","level":2,"score":0.4216727614402771},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.3642723560333252},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.35885536670684814},{"id":"https://openalex.org/C107826830","wikidata":"https://www.wikidata.org/wiki/Q929380","display_name":"Environmental resource management","level":1,"score":0.35759469866752625},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.28394097089767456},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.14026954770088196},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.11786511540412903},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.09878849983215332},{"id":"https://openalex.org/C110872660","wikidata":"https://www.wikidata.org/wiki/Q37813","display_name":"Ecosystem","level":2,"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/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","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}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1016/j.jag.2020.102240","is_oa":true,"landing_page_url":"https://doi.org/10.1016/j.jag.2020.102240","pdf_url":null,"source":{"id":"https://openalex.org/S4210179989","display_name":"International Journal of Applied Earth Observation and Geoinformation","issn_l":"1569-8432","issn":["1569-8432","1872-826X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Applied Earth Observation and Geoinformation","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:f15f83ff477b4a618fbb62c834767686","is_oa":false,"landing_page_url":"https://doaj.org/article/f15f83ff477b4a618fbb62c834767686","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"International Journal of Applied Earth Observations and Geoinformation, Vol 95, Iss , Pp 102240- (2021)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1016/j.jag.2020.102240","is_oa":true,"landing_page_url":"https://doi.org/10.1016/j.jag.2020.102240","pdf_url":null,"source":{"id":"https://openalex.org/S4210179989","display_name":"International Journal of Applied Earth Observation and Geoinformation","issn_l":"1569-8432","issn":["1569-8432","1872-826X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Applied Earth Observation and Geoinformation","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.5600000023841858,"id":"https://metadata.un.org/sdg/13","display_name":"Climate action"}],"awards":[{"id":"https://openalex.org/G941656598","display_name":"The European network for observing our changing planet","funder_award_id":"689443","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"}],"funders":[{"id":"https://openalex.org/F4320320300","display_name":"European Commission","ror":"https://ror.org/00k4n6c32"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":263,"referenced_works":["https://openalex.org/W61452412","https://openalex.org/W70730126","https://openalex.org/W583955413","https://openalex.org/W602303504","https://openalex.org/W654703805","https://openalex.org/W792329239","https://openalex.org/W1057815050","https://openalex.org/W1421751110","https://openalex.org/W1482240489","https://openalex.org/W1490292397","https://openalex.org/W1496503081","https://openalex.org/W1533384740","https://openalex.org/W1541442901","https://openalex.org/W1544574920","https://openalex.org/W1595331553","https://openalex.org/W1596439880","https://openalex.org/W1647902487","https://openalex.org/W1729623471","https://openalex.org/W1909518542","https://openalex.org/W1915312398","https://openalex.org/W1963610170","https://openalex.org/W1966854945","https://openalex.org/W1968632946","https://openalex.org/W1970560396","https://openalex.org/W1971109292","https://openalex.org/W1974948123","https://openalex.org/W1975634847","https://openalex.org/W1975768883","https://openalex.org/W1979723077","https://openalex.org/W1980385468","https://openalex.org/W1984678359","https://openalex.org/W1985109899","https://openalex.org/W1985328644","https://openalex.org/W1986767077","https://openalex.org/W1987139340","https://openalex.org/W1988700995","https://openalex.org/W1990793870","https://openalex.org/W1992436740","https://openalex.org/W1995282508","https://openalex.org/W1997893060","https://openalex.org/W1998438756","https://openalex.org/W2001510610","https://openalex.org/W2001602455","https://openalex.org/W2001734588","https://openalex.org/W2006273284","https://openalex.org/W2006563460","https://openalex.org/W2007134419","https://openalex.org/W2011150518","https://openalex.org/W2013061102","https://openalex.org/W2018130020","https://openalex.org/W2025042814","https://openalex.org/W2026337749","https://openalex.org/W2027469749","https://openalex.org/W2028979033","https://openalex.org/W2031061820","https://openalex.org/W2032300129","https://openalex.org/W2034220569","https://openalex.org/W2036203979","https://openalex.org/W2037561217","https://openalex.org/W2038137144","https://openalex.org/W2041533898","https://openalex.org/W2043259636","https://openalex.org/W2043579401","https://openalex.org/W2045601456","https://openalex.org/W2045762106","https://openalex.org/W2046278200","https://openalex.org/W2046957268","https://openalex.org/W2050306760","https://openalex.org/W2050424921","https://openalex.org/W2052766960","https://openalex.org/W2053183457","https://openalex.org/W2053656269","https://openalex.org/W2053794499","https://openalex.org/W2053812518","https://openalex.org/W2054102182","https://openalex.org/W2055353410","https://openalex.org/W2055737779","https://openalex.org/W2056425951","https://openalex.org/W2058119237","https://openalex.org/W2058214432","https://openalex.org/W2058947207","https://openalex.org/W2061227954","https://openalex.org/W2061920292","https://openalex.org/W2063422594","https://openalex.org/W2064616890","https://openalex.org/W2070817134","https://openalex.org/W2072154712","https://openalex.org/W2072465375","https://openalex.org/W2072792391","https://openalex.org/W2073951769","https://openalex.org/W2077570405","https://openalex.org/W2079282790","https://openalex.org/W2081483875","https://openalex.org/W2090124427","https://openalex.org/W2093321230","https://openalex.org/W2093589181","https://openalex.org/W2097110832","https://openalex.org/W2097434015","https://openalex.org/W2099763881","https://openalex.org/W2105782107","https://openalex.org/W2106241015","https://openalex.org/W2108031818","https://openalex.org/W2110387639","https://openalex.org/W2110832309","https://openalex.org/W2112084935","https://openalex.org/W2114828048","https://openalex.org/W2116051267","https://openalex.org/W2119938379","https://openalex.org/W2120493350","https://openalex.org/W2123064650","https://openalex.org/W2123744475","https://openalex.org/W2125776977","https://openalex.org/W2126822288","https://openalex.org/W2129859781","https://openalex.org/W2131372757","https://openalex.org/W2132406085","https://openalex.org/W2133341703","https://openalex.org/W2134819938","https://openalex.org/W2136036783","https://openalex.org/W2138059093","https://openalex.org/W2144137496","https://openalex.org/W2144423540","https://openalex.org/W2147241431","https://openalex.org/W2147462896","https://openalex.org/W2149184698","https://openalex.org/W2151647593","https://openalex.org/W2152366160","https://openalex.org/W2153133730","https://openalex.org/W2153243519","https://openalex.org/W2153748528","https://openalex.org/W2153820558","https://openalex.org/W2154665623","https://openalex.org/W2155685166","https://openalex.org/W2155723114","https://openalex.org/W2156599833","https://openalex.org/W2157144502","https://openalex.org/W2158268769","https://openalex.org/W2159103275","https://openalex.org/W2161071907","https://openalex.org/W2164496884","https://openalex.org/W2166609657","https://openalex.org/W2167962096","https://openalex.org/W2168186402","https://openalex.org/W2175437076","https://openalex.org/W2205706480","https://openalex.org/W2232920211","https://openalex.org/W2236687958","https://openalex.org/W2260820281","https://openalex.org/W2277015739","https://openalex.org/W2293874811","https://openalex.org/W2299597119","https://openalex.org/W2307094448","https://openalex.org/W2310553581","https://openalex.org/W2310995390","https://openalex.org/W2313242624","https://openalex.org/W2315214008","https://openalex.org/W2322750819","https://openalex.org/W2336426693","https://openalex.org/W2338049369","https://openalex.org/W2348428089","https://openalex.org/W2399490470","https://openalex.org/W2417174564","https://openalex.org/W2525892670","https://openalex.org/W2530436725","https://openalex.org/W2534411035","https://openalex.org/W2547462189","https://openalex.org/W2549017943","https://openalex.org/W2551713989","https://openalex.org/W2555831306","https://openalex.org/W2561189309","https://openalex.org/W2565795498","https://openalex.org/W2579894288","https://openalex.org/W2586443140","https://openalex.org/W2593126123","https://openalex.org/W2595433512","https://openalex.org/W2599868771","https://openalex.org/W2601902151","https://openalex.org/W2620630712","https://openalex.org/W2625129035","https://openalex.org/W2625380067","https://openalex.org/W2625614424","https://openalex.org/W2736896525","https://openalex.org/W2737609272","https://openalex.org/W2753896079","https://openalex.org/W2756660268","https://openalex.org/W2765568504","https://openalex.org/W2766479140","https://openalex.org/W2766784875","https://openalex.org/W2767319224","https://openalex.org/W2774758869","https://openalex.org/W2777768258","https://openalex.org/W2780380508","https://openalex.org/W2789250889","https://openalex.org/W2793332814","https://openalex.org/W2793478006","https://openalex.org/W2796410914","https://openalex.org/W2800579668","https://openalex.org/W2804273873","https://openalex.org/W2805342224","https://openalex.org/W2807166729","https://openalex.org/W2888521623","https://openalex.org/W2897285410","https://openalex.org/W2897788153","https://openalex.org/W2904321320","https://openalex.org/W2905043775","https://openalex.org/W2907203129","https://openalex.org/W2912781587","https://openalex.org/W2916889011","https://openalex.org/W2917772783","https://openalex.org/W2923594661","https://openalex.org/W2923750943","https://openalex.org/W2936723493","https://openalex.org/W2937037766","https://openalex.org/W2941816951","https://openalex.org/W2943316090","https://openalex.org/W2945518674","https://openalex.org/W2953638389","https://openalex.org/W2971262600","https://openalex.org/W2989337326","https://openalex.org/W3001973150","https://openalex.org/W3012638585","https://openalex.org/W3015672631","https://openalex.org/W3023439803","https://openalex.org/W3048378409","https://openalex.org/W3123178353","https://openalex.org/W3202203204","https://openalex.org/W4238340868","https://openalex.org/W4244532226","https://openalex.org/W4391197160","https://openalex.org/W6621678423","https://openalex.org/W6622915811","https://openalex.org/W6628884812","https://openalex.org/W6631856656","https://openalex.org/W6635469387","https://openalex.org/W6650846076","https://openalex.org/W6652029644","https://openalex.org/W6657179962","https://openalex.org/W6662052672","https://openalex.org/W6663855915","https://openalex.org/W6666476393","https://openalex.org/W6682759885","https://openalex.org/W6684182890","https://openalex.org/W6690380716","https://openalex.org/W6694815589","https://openalex.org/W6729425122","https://openalex.org/W6730255078","https://openalex.org/W6738430847","https://openalex.org/W6745461897","https://openalex.org/W6760635348","https://openalex.org/W6762622801","https://openalex.org/W6765119171","https://openalex.org/W6885121228","https://openalex.org/W6892100371","https://openalex.org/W6892218612","https://openalex.org/W6911051151","https://openalex.org/W6911221866","https://openalex.org/W6929620315","https://openalex.org/W6929894713","https://openalex.org/W6930113926","https://openalex.org/W6948856385","https://openalex.org/W6966888402","https://openalex.org/W6967353230","https://openalex.org/W6986831883"],"related_works":["https://openalex.org/W2365594754","https://openalex.org/W2575292835","https://openalex.org/W4287902769","https://openalex.org/W3001140700","https://openalex.org/W2995453361","https://openalex.org/W3021704418","https://openalex.org/W4390295458","https://openalex.org/W1990407237","https://openalex.org/W2092282998","https://openalex.org/W2053982300"],"abstract_inverted_index":{"Terrestrial":[0],"Essential":[1],"Climate":[2],"Variables,":[3],"known":[4],"as":[5],"terrestrial":[6,25,90,120,162,200,304,351],"ECVs,":[7,201],"are":[8,36,112,169,253,306],"key":[9,204],"sources":[10],"of":[11,23,43,59,67,77,101,117,153,157,186,198,258,278,285,293,301,348],"information":[12],"for":[13,87,114,126,164,232,260,340],"both":[14],"application-":[15],"and":[16,34,52,80,107,122,192,206,226,251,291,321,344],"scientific-":[17],"oriented":[18],"research.":[19],"A":[20],"large":[21],"number":[22],"global":[24,131,159,212,269,350],"ECV":[26],"products":[27,116],"have":[28,70,81],"been":[29,71],"derived":[30],"from":[31],"satellite":[32],"observations,":[33],"more":[35],"forthcoming.":[37],"To":[38,141],"unlock":[39],"the":[40,57,75,88,99,130,144,150,184,241,244,255,268,275,283,302,338],"full":[41,264],"potential":[42],"these":[44,78,199],"products,":[45,79],"end-users":[46,136],"need":[47],"to":[48,56,73,137,148,240,282,308,331],"know":[49],"their":[50],"uncertainties":[51],"error":[53],"magnitudes.":[54],"Due":[55],"lack":[58,284,292],"conformity":[60],"among":[61],"validation":[62,68,96,109,222,229,236,266,287,297,317,346],"strategies,":[63],"a":[64,118,154,221,263,294,316],"wide":[65],"range":[66],"approaches":[69],"employed":[72],"assess":[74],"quality":[76],"resulted":[82],"in":[83,95,217],"reduced":[84],"comparability":[85],"even":[86],"same":[89],"ECV.":[91],"Addressing":[92],"this":[93,142],"challenge":[94],"practices":[97],"requires":[98],"use":[100],"unified,":[102],"standard,":[103],"publicly":[104],"available,":[105],"traceable":[106],"objective":[108],"procedures":[110,347],"that":[111,248],"operational":[113,165,235,265,345],"all":[115,127],"specific":[119],"ECV,":[121],"preferably":[123],"also":[124],"applicable":[125],"ECVs":[128,163,305],"at":[129,254,267,274,310],"scale.":[132,270],"This":[133,334],"can":[134,336],"allow":[135],"perform":[138],"comparative":[139],"assessments.":[140],"end,":[143],"current":[145],"study":[146],"aims":[147],"investigate":[149],"readiness":[151,259],"status":[152],"selected":[155,303],"group":[156],"seven":[158],"long-term":[160],"satellite-based":[161,349],"validation.":[166],"Selected":[167],"variables":[168],"Leaf":[170],"Area":[171],"Index":[172],"(LAI),":[173],"Land":[174,193],"Surface":[175],"Temperature":[176],"(LST),":[177],"Evapotranspiration":[178],"(ET),":[179],"Soil":[180],"Moisture":[181],"(SM),":[182],"Albedo,":[183],"fraction":[185],"Absorbed":[187],"Photosynthetically":[188],"Active":[189],"Radiation":[190],"(fAPAR),":[191],"Cover":[194],"(LC).":[195],"For":[196],"each":[197],"we":[202],"reviewed":[203],"prerequisites":[205],"primary":[207],"tools":[208],"[notably,":[209],"long":[210],"term":[211],"product":[213],"availability,":[214,220],"globally":[215],"distributed":[216],"situ":[218],"measurement":[219],"good":[223,288,324],"practice":[224,289,325],"protocol,":[225],"an":[227,234],"online":[228,296],"platform]":[230],"required":[231],"developing":[233],"system.":[237],"With":[238],"respect":[239],"\u201creadiness":[242],"level\u201d,":[243],"investigation":[245],"results":[246],"demonstrate":[247],"LAI,":[249],"SM,":[250],"LC":[252],"highest":[256],"level":[257,277],"moving":[261],"toward":[262],"However,":[271],"ET":[272],"is":[273],"lowest":[276],"readiness,":[279,312],"mainly":[280,313],"due":[281],"standard":[286],"protocol":[290,326],"pilot":[295],"platform.":[298],"The":[299],"remainder":[300],"identified":[307],"be":[309,332],"mid-level":[311],"because":[314],"either":[315],"platform":[318],"(i.e.,":[319,327],"LST":[320],"albedo)":[322],"or":[323],"fAPAR)":[328],"still":[329],"needs":[330],"developed.":[333],"review":[335],"pave":[337],"way":[339],"open-access,":[341],"traceable,":[342],"transparent,":[343],"ECVs.":[352]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":14},{"year":2024,"cited_by_count":11},{"year":2023,"cited_by_count":22},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":14}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}