{"id":"https://openalex.org/W2155112125","doi":"https://doi.org/10.1109/igarss.2008.4779417","title":"Vegetation Phenology Metrics Derived from Temporally Smoothed and Gap-Filled MODIS Data","display_name":"Vegetation Phenology Metrics Derived from Temporally Smoothed and Gap-Filled MODIS Data","publication_year":2008,"publication_date":"2008-01-01","ids":{"openalex":"https://openalex.org/W2155112125","doi":"https://doi.org/10.1109/igarss.2008.4779417","mag":"2155112125"},"language":"en","primary_location":{"id":"doi:10.1109/igarss.2008.4779417","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2008.4779417","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://ntrs.nasa.gov/api/citations/20120016645/downloads/20120016645.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5103144670","display_name":"Bin Tan","orcid":"https://orcid.org/0000-0003-2668-2479"},"institutions":[{"id":"https://openalex.org/I4210105538","display_name":"Maryland Department of Natural Resources","ror":"https://ror.org/01fem2359","country_code":"US","type":"funder","lineage":["https://openalex.org/I4210105538"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Bin Tan","raw_affiliation_strings":["ERT, Annapolis Junction, MD, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"ERT, Annapolis Junction, MD, USA","institution_ids":["https://openalex.org/I4210105538"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5006248635","display_name":"Jeffrey T. Morisette","orcid":"https://orcid.org/0000-0002-0483-0082"},"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":"Jeffrey T. Morisette","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5033282902","display_name":"Robert E. Wolfe","orcid":"https://orcid.org/0000-0002-0915-1855"},"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":"Robert E. Wolfe","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100362401","display_name":"Feng Gao","orcid":"https://orcid.org/0000-0002-1865-2846"},"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":"Feng Gao","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111893064","display_name":"G. Ederer","orcid":null},"institutions":[{"id":"https://openalex.org/I4210156563","display_name":"Seabrook","ror":"https://ror.org/04gz57z30","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210156563"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Gregory A. Ederer","raw_affiliation_strings":["SAIC (GSC), Seabrook, MD, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"SAIC (GSC), Seabrook, MD, USA","institution_ids":["https://openalex.org/I4210156563"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086582240","display_name":"Joanne Nightingale","orcid":"https://orcid.org/0000-0001-7061-4305"},"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":"Joanne Nightingale","raw_affiliation_strings":["Goddard Space Flight Center, University of Maryland, Greenbelt, MD, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Goddard Space Flight Center, University of Maryland, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5110256859","display_name":"J. A. Pedelty","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"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jeffrey A. Pedelty","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":7,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.3085,"has_fulltext":true,"cited_by_count":33,"citation_normalized_percentile":{"value":0.81637273,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"III ","last_page":" 593"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10111","display_name":"Remote Sensing in Agriculture","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"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/T10111","display_name":"Remote Sensing in Agriculture","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"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/T10895","display_name":"Species Distribution and Climate Change","score":0.9940999746322632,"subfield":{"id":"https://openalex.org/subfields/2302","display_name":"Ecological Modeling"},"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":0.991100013256073,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/enhanced-vegetation-index","display_name":"Enhanced vegetation index","score":0.8630184531211853},{"id":"https://openalex.org/keywords/normalized-difference-vegetation-index","display_name":"Normalized Difference Vegetation Index","score":0.8573418855667114},{"id":"https://openalex.org/keywords/phenology","display_name":"Phenology","score":0.8565998077392578},{"id":"https://openalex.org/keywords/moderate-resolution-imaging-spectroradiometer","display_name":"Moderate-resolution imaging spectroradiometer","score":0.7923633456230164},{"id":"https://openalex.org/keywords/land-cover","display_name":"Land cover","score":0.6526753902435303},{"id":"https://openalex.org/keywords/vegetation","display_name":"Vegetation (pathology)","score":0.5869978070259094},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.5820398330688477},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.5450986623764038},{"id":"https://openalex.org/keywords/smoothing","display_name":"Smoothing","score":0.5355605483055115},{"id":"https://openalex.org/keywords/spectroradiometer","display_name":"Spectroradiometer","score":0.41706788539886475},{"id":"https://openalex.org/keywords/leaf-area-index","display_name":"Leaf area index","score":0.39765650033950806},{"id":"https://openalex.org/keywords/vegetation-index","display_name":"Vegetation Index","score":0.37890180945396423},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.20335859060287476},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.1804269552230835},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.16345104575157166},{"id":"https://openalex.org/keywords/land-use","display_name":"Land use","score":0.14099785685539246},{"id":"https://openalex.org/keywords/ecology","display_name":"Ecology","score":0.09230712056159973},{"id":"https://openalex.org/keywords/reflectivity","display_name":"Reflectivity","score":0.09145712852478027}],"concepts":[{"id":"https://openalex.org/C78869512","wikidata":"https://www.wikidata.org/wiki/Q5378810","display_name":"Enhanced vegetation index","level":5,"score":0.8630184531211853},{"id":"https://openalex.org/C1549246","wikidata":"https://www.wikidata.org/wiki/Q718775","display_name":"Normalized Difference Vegetation Index","level":3,"score":0.8573418855667114},{"id":"https://openalex.org/C51417038","wikidata":"https://www.wikidata.org/wiki/Q272737","display_name":"Phenology","level":2,"score":0.8565998077392578},{"id":"https://openalex.org/C2777007095","wikidata":"https://www.wikidata.org/wiki/Q676840","display_name":"Moderate-resolution imaging spectroradiometer","level":3,"score":0.7923633456230164},{"id":"https://openalex.org/C2780648208","wikidata":"https://www.wikidata.org/wiki/Q3001793","display_name":"Land cover","level":3,"score":0.6526753902435303},{"id":"https://openalex.org/C2776133958","wikidata":"https://www.wikidata.org/wiki/Q7918366","display_name":"Vegetation (pathology)","level":2,"score":0.5869978070259094},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.5820398330688477},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.5450986623764038},{"id":"https://openalex.org/C3770464","wikidata":"https://www.wikidata.org/wiki/Q775963","display_name":"Smoothing","level":2,"score":0.5355605483055115},{"id":"https://openalex.org/C130066347","wikidata":"https://www.wikidata.org/wiki/Q680509","display_name":"Spectroradiometer","level":3,"score":0.41706788539886475},{"id":"https://openalex.org/C25989453","wikidata":"https://www.wikidata.org/wiki/Q446746","display_name":"Leaf area index","level":2,"score":0.39765650033950806},{"id":"https://openalex.org/C2780376076","wikidata":"https://www.wikidata.org/wiki/Q1499458","display_name":"Vegetation Index","level":4,"score":0.37890180945396423},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.20335859060287476},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.1804269552230835},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.16345104575157166},{"id":"https://openalex.org/C4792198","wikidata":"https://www.wikidata.org/wiki/Q1165944","display_name":"Land use","level":2,"score":0.14099785685539246},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.09230712056159973},{"id":"https://openalex.org/C108597893","wikidata":"https://www.wikidata.org/wiki/Q663650","display_name":"Reflectivity","level":2,"score":0.09145712852478027},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"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/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","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},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","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/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/igarss.2008.4779417","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2008.4779417","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"},{"id":"pmh:oai:casi.ntrs.nasa.gov:20120016645","is_oa":true,"landing_page_url":"http://hdl.handle.net/2060/20120016645","pdf_url":"https://ntrs.nasa.gov/api/citations/20120016645/downloads/20120016645.pdf","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.OVPR.7433/2012"}],"best_oa_location":{"id":"pmh:oai:casi.ntrs.nasa.gov:20120016645","is_oa":true,"landing_page_url":"http://hdl.handle.net/2060/20120016645","pdf_url":"https://ntrs.nasa.gov/api/citations/20120016645/downloads/20120016645.pdf","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.OVPR.7433/2012"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/15","score":0.6200000047683716,"display_name":"Life in Land"}],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2155112125.pdf","grobid_xml":"https://content.openalex.org/works/W2155112125.grobid-xml"},"referenced_works_count":9,"referenced_works":["https://openalex.org/W2076110533","https://openalex.org/W2087965082","https://openalex.org/W2105172715","https://openalex.org/W2106550051","https://openalex.org/W2113410727","https://openalex.org/W2113503197","https://openalex.org/W2121025662","https://openalex.org/W2138751033","https://openalex.org/W2153243519"],"related_works":["https://openalex.org/W1968901811","https://openalex.org/W2087241461","https://openalex.org/W1609312116","https://openalex.org/W2186463388","https://openalex.org/W2989277860","https://openalex.org/W2098219828","https://openalex.org/W4387582658","https://openalex.org/W3152034631","https://openalex.org/W2891636903","https://openalex.org/W2463549833"],"abstract_inverted_index":{"A":[0],"set":[1],"of":[2,56,74,77,91,135],"phenology":[3,29,58,69,110,115,127],"metrics":[4,116],"have":[5],"been":[6,32],"estimated":[7,117],"based":[8,68],"on":[9,139],"temporally":[10],"smoothed":[11,79],"and":[12,48,80,104,109,112,120,144],"spatially":[13],"gap-filled":[14,81],"Moderate":[15],"Resolution":[16],"Imaging":[17],"Spectroradiometer":[18],"(MODIS)":[19],"vegetation":[20,37],"indices":[21],"(VI)":[22],"over":[23],"the":[24,75,78,92,100,114,136,140,150],"North":[25],"American":[26],"continent.":[27],"The":[28,53,133],"algorithm":[30,103],"has":[31],"applied":[33],"to":[34,148],"three":[35],"MODIS":[36,82],"indices:":[38],"Leaf":[39],"Area":[40],"Index":[41,46,51],"(LAI),":[42],"Normalized":[43],"Difference":[44],"Vegetation":[45,50],"(NDVI),":[47],"Enhanced":[49],"(EVI).":[52],"spatial":[54],"coverage":[55],"this":[57,96],"data":[59,67,83],"is":[60,72],"more":[61],"complete":[62],"than":[63],"other":[64],"remotely":[65],"sensed":[66],"products.":[70],"This":[71],"because":[73],"quality":[76],"that":[84],"was":[85],"produced":[86],"using":[87],"an":[88],"enhanced":[89,101],"version":[90],"TIMESAT":[93,102],"algorithm.":[94],"In":[95],"paper,":[97],"we":[98],"review":[99],"related":[105],"smoothing,":[106],"gap":[107],"filling":[108],"algorithm,":[111],"compare":[113],"from":[118,129],"NDVI":[119],"EVI.":[121],"Our":[122],"results":[123],"show":[124],"differences":[125],"in":[126],"inferred":[128],"EVI":[130],"versus":[131],"NDVI.":[132],"magnitude":[134],"difference":[137],"depends":[138],"land":[141,151],"cover":[142,152],"type":[143],"could":[145],"be":[146],"used":[147],"improve":[149],"classification":[153],"accuracy.":[154]},"counts_by_year":[{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":3},{"year":2017,"cited_by_count":5},{"year":2016,"cited_by_count":2},{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":5},{"year":2012,"cited_by_count":5}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}