{"id":"https://openalex.org/W2049664230","doi":"https://doi.org/10.1109/igarss.2012.6352508","title":"Evaluation of methods to compute green-up dates based on daily NDVI observations","display_name":"Evaluation of methods to compute green-up dates based on daily NDVI observations","publication_year":2012,"publication_date":"2012-07-01","ids":{"openalex":"https://openalex.org/W2049664230","doi":"https://doi.org/10.1109/igarss.2012.6352508","mag":"2049664230"},"language":"en","primary_location":{"id":"doi:10.1109/igarss.2012.6352508","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2012.6352508","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2012 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"},"type":"conference-paper","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/A5079074963","display_name":"Daniel Doktor","orcid":"https://orcid.org/0000-0002-4761-3344"},"institutions":[{"id":"https://openalex.org/I137479271","display_name":"Helmholtz Centre for Environmental Research","ror":"https://ror.org/000h6jb29","country_code":"DE","type":"facility","lineage":["https://openalex.org/I1305996414","https://openalex.org/I137479271"]},{"id":"https://openalex.org/I147765834","display_name":"Leipzig University of Applied Sciences","ror":"https://ror.org/03xgcq477","country_code":"DE","type":"education","lineage":["https://openalex.org/I147765834"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Daniel Doktor","raw_affiliation_strings":["Department of Computational Landscape Ecology, Helmholtz-Centre for Environmental Research-UFZ, HTWK Leipzig, Germany","Helmholtz-Centre for Environmental Research - UFZ, HTWK Leipzig, Department of Computational, Landscape Ecology, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computational Landscape Ecology, Helmholtz-Centre for Environmental Research-UFZ, HTWK Leipzig, Germany","institution_ids":["https://openalex.org/I137479271","https://openalex.org/I147765834"]},{"raw_affiliation_string":"Helmholtz-Centre for Environmental Research - UFZ, HTWK Leipzig, Department of Computational, Landscape Ecology, Germany","institution_ids":["https://openalex.org/I137479271"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5034422087","display_name":"Maximilian Lange","orcid":"https://orcid.org/0000-0001-9657-8779"},"institutions":[{"id":"https://openalex.org/I137479271","display_name":"Helmholtz Centre for Environmental Research","ror":"https://ror.org/000h6jb29","country_code":"DE","type":"facility","lineage":["https://openalex.org/I1305996414","https://openalex.org/I137479271"]},{"id":"https://openalex.org/I147765834","display_name":"Leipzig University of Applied Sciences","ror":"https://ror.org/03xgcq477","country_code":"DE","type":"education","lineage":["https://openalex.org/I147765834"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Maximilian Lange","raw_affiliation_strings":["Department of Computational Landscape Ecology, Helmholtz-Centre for Environmental Research-UFZ, HTWK Leipzig, Germany","Helmholtz-Centre for Environmental Research - UFZ, HTWK Leipzig, Department of Computational, Landscape Ecology, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computational Landscape Ecology, Helmholtz-Centre for Environmental Research-UFZ, HTWK Leipzig, Germany","institution_ids":["https://openalex.org/I137479271","https://openalex.org/I147765834"]},{"raw_affiliation_string":"Helmholtz-Centre for Environmental Research - UFZ, HTWK Leipzig, Department of Computational, Landscape Ecology, Germany","institution_ids":["https://openalex.org/I137479271"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5006464944","display_name":"D. Koslowsky","orcid":null},"institutions":[{"id":"https://openalex.org/I75951250","display_name":"Freie Universit\u00e4t Berlin","ror":"https://ror.org/046ak2485","country_code":"DE","type":"education","lineage":["https://openalex.org/I75951250"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Dirk Koslowsky","raw_affiliation_strings":["Department of Geosciences Institute of Meteorology, Free University of Berlin, Germany","Free University of Berlin, Department of Geosciences, Institute of Meteorology, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Geosciences Institute of Meteorology, Free University of Berlin, Germany","institution_ids":["https://openalex.org/I75951250"]},{"raw_affiliation_string":"Free University of Berlin, Department of Geosciences, Institute of Meteorology, Germany","institution_ids":["https://openalex.org/I75951250"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.17388219,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"22","issue":null,"first_page":"4922","last_page":"4925"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10111","display_name":"Remote Sensing in Agriculture","score":0.9998000264167786,"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":0.9998000264167786,"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/T10266","display_name":"Plant Water Relations and Carbon Dynamics","score":0.9986000061035156,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11164","display_name":"Remote Sensing and LiDAR Applications","score":0.988099992275238,"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/woodland","display_name":"Woodland","score":0.6513817310333252},{"id":"https://openalex.org/keywords/physical-geography","display_name":"Physical geography","score":0.6396061182022095},{"id":"https://openalex.org/keywords/phenology","display_name":"Phenology","score":0.5377144813537598},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.4956587553024292},{"id":"https://openalex.org/keywords/period","display_name":"Period (music)","score":0.4630888104438782},{"id":"https://openalex.org/keywords/agriculture","display_name":"Agriculture","score":0.46136990189552307},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.3698592483997345},{"id":"https://openalex.org/keywords/archaeology","display_name":"Archaeology","score":0.2781379222869873},{"id":"https://openalex.org/keywords/ecology","display_name":"Ecology","score":0.08257108926773071}],"concepts":[{"id":"https://openalex.org/C203174812","wikidata":"https://www.wikidata.org/wiki/Q3241565","display_name":"Woodland","level":2,"score":0.6513817310333252},{"id":"https://openalex.org/C100970517","wikidata":"https://www.wikidata.org/wiki/Q52107","display_name":"Physical geography","level":1,"score":0.6396061182022095},{"id":"https://openalex.org/C51417038","wikidata":"https://www.wikidata.org/wiki/Q272737","display_name":"Phenology","level":2,"score":0.5377144813537598},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.4956587553024292},{"id":"https://openalex.org/C2781291010","wikidata":"https://www.wikidata.org/wiki/Q178580","display_name":"Period (music)","level":2,"score":0.4630888104438782},{"id":"https://openalex.org/C118518473","wikidata":"https://www.wikidata.org/wiki/Q11451","display_name":"Agriculture","level":2,"score":0.46136990189552307},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.3698592483997345},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.2781379222869873},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.08257108926773071},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/igarss.2012.6352508","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2012.6352508","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2012 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W1535541538","https://openalex.org/W1966772288","https://openalex.org/W1996463620","https://openalex.org/W2038990264","https://openalex.org/W2072093516","https://openalex.org/W2109606373","https://openalex.org/W2126489591","https://openalex.org/W2179617327","https://openalex.org/W2432517183","https://openalex.org/W6685617319"],"related_works":["https://openalex.org/W597661690","https://openalex.org/W2069660107","https://openalex.org/W3025445785","https://openalex.org/W2386394999","https://openalex.org/W4320480824","https://openalex.org/W2351845884","https://openalex.org/W2373524250","https://openalex.org/W2389944846","https://openalex.org/W1991925739","https://openalex.org/W4288349372"],"abstract_inverted_index":{"Area-wide":[0],"green-up":[1,39,85,93],"dates":[2,86],"for":[3,11,33,106],"Central":[4,41],"and":[5,14,27,36,42,58,77],"Western":[6],"Europe":[7,35,44],"could":[8],"be":[9,89],"derived":[10],"all":[12],"methods":[13],"years":[15],"(exemplary":[16],"s.":[17],"Figure":[18],"1).":[19],"Phenological":[20],"metrics":[21],"are":[22,81,95],"in":[23,66,96],"accordance":[24],"with":[25,98],"climatic":[26],"topographic":[28],"conditions:":[29],"an":[30],"early":[31],"start-of-the-season":[32],"southwestern":[34,67],"a":[37],"later":[38],"towards":[40],"Eastern":[43],"as":[45,47,65],"well":[46],"the":[48,52,54,56,59,104,107],"elevated":[49],"regions":[50,70],"of":[51,71,109],"Pyrenees,":[53],"Alps,":[55],"Apennines":[57],"Carpathians.":[60],"Large":[61],"coniferous":[62],"woodlands":[63],"such":[64],"France":[68],"or":[69],"intense":[72],"agriculture/dense":[73],"canal":[74],"networks":[75],"(Po":[76],"Rhine":[78],"Valley,":[79],"Netherlands)":[80],"attributed":[82],"fairly":[83],"late":[84],"which":[87],"should":[88],"investigated":[90],"further.":[91],"Computed":[92],"days":[94],"line":[97],"respective":[99],"budburst":[100],"events":[101],"observed":[102],"on":[103],"ground":[105],"area":[108],"Germany.":[110]},"counts_by_year":[],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}