{"id":"https://openalex.org/W3205280643","doi":"https://doi.org/10.1109/igarss47720.2021.9553506","title":"Spruce Crown Transparency Levels Detected from Sentinel-2 Using Google Earth Engine","display_name":"Spruce Crown Transparency Levels Detected from Sentinel-2 Using Google Earth Engine","publication_year":2021,"publication_date":"2021-07-11","ids":{"openalex":"https://openalex.org/W3205280643","doi":"https://doi.org/10.1109/igarss47720.2021.9553506","mag":"3205280643"},"language":"en","primary_location":{"id":"doi:10.1109/igarss47720.2021.9553506","doi":"https://doi.org/10.1109/igarss47720.2021.9553506","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss47720.2021.9553506","pdf_url":null,"source":{"id":"https://openalex.org/S4363604196","display_name":"IEEE International Geoscience and Remote Sensing Symposium (IGARSS)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS","raw_type":"proceedings-article"},"volume":null,"type":"conference-paper","is_traditional":true,"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/A5079849669","display_name":"Carsten Montzka","orcid":"https://orcid.org/0000-0003-0812-8570","observed_orcids":["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 Geosphere: Agrosphere (IBG-3), Forschungszentrum J\u00fclich, J\u00fclich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Bio- and Geosphere: Agrosphere (IBG-3), Forschungszentrum J\u00fclich, J\u00fclich, Germany","institution_ids":["https://openalex.org/I171892758"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081221460","display_name":"Bagher Bayat","orcid":"https://orcid.org/0000-0002-7761-9544","observed_orcids":["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":false,"raw_author_name":"Bagher Bayat","raw_affiliation_strings":["Institute of Bio- and Geosphere: Agrosphere (IBG-3), Forschungszentrum J\u00fclich, J\u00fclich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Bio- and Geosphere: Agrosphere (IBG-3), Forschungszentrum J\u00fclich, J\u00fclich, Germany","institution_ids":["https://openalex.org/I171892758"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5026837440","display_name":"Andreas Tewes","orcid":"https://orcid.org/0000-0002-8899-0285","observed_orcids":["https://orcid.org/0000-0002-8899-0285"]},"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":"Andreas Tewes","raw_affiliation_strings":["Institute of Bio- and Geosphere: Agrosphere (IBG-3), Forschungszentrum J\u00fclich, J\u00fclich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Bio- and Geosphere: Agrosphere (IBG-3), Forschungszentrum J\u00fclich, J\u00fclich, Germany","institution_ids":["https://openalex.org/I171892758"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5000620585","display_name":"David Mengen","orcid":"https://orcid.org/0000-0003-4041-6599","observed_orcids":["https://orcid.org/0000-0003-4041-6599"]},"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":"David Mengen","raw_affiliation_strings":["Institute of Bio- and Geosphere: Agrosphere (IBG-3), Forschungszentrum J\u00fclich, J\u00fclich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Bio- and Geosphere: Agrosphere (IBG-3), Forschungszentrum J\u00fclich, J\u00fclich, Germany","institution_ids":["https://openalex.org/I171892758"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5028331853","display_name":"Harry Vereecken","orcid":"https://orcid.org/0000-0002-8051-8517","observed_orcids":["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 Geosphere: Agrosphere (IBG-3), Forschungszentrum J\u00fclich, J\u00fclich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Bio- and Geosphere: Agrosphere (IBG-3), Forschungszentrum J\u00fclich, J\u00fclich, Germany","institution_ids":["https://openalex.org/I171892758"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I171892758"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":95},"biblio":{"volume":null,"issue":null,"first_page":"5815","last_page":"5817"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11691","display_name":"Forest Insect Ecology and Management","score":0.47440001368522644,"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/T11691","display_name":"Forest Insect Ecology and Management","score":0.47440001368522644,"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/T10111","display_name":"Remote Sensing in Agriculture","score":0.29350000619888306,"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":0.13950000703334808,"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/spruce-mortality","display_name":"spruce mortality","score":0.8970000147819519},{"id":"https://openalex.org/keywords/drought","display_name":"drought","score":0.4699999988079071},{"id":"https://openalex.org/keywords/bark-beetles","display_name":"bark beetles","score":0.8040000200271606},{"id":"https://openalex.org/keywords/sentinel-2","display_name":"Sentinel-2","score":0.781000018119812},{"id":"https://openalex.org/keywords/forest-statistics","display_name":"forest statistics","score":0.5019999742507935},{"id":"https://openalex.org/keywords/elevation","display_name":"altitude","score":0.7279999852180481},{"id":"https://openalex.org/keywords/spatial-patterns","display_name":"spatial patterns","score":0.625},{"id":"https://openalex.org/keywords/forest-resilience","display_name":"forest resilience","score":0.46700000762939453}],"concepts":[{"id":"https://openalex.org/C2778400979","wikidata":"https://www.wikidata.org/wiki/Q143720","display_name":"Crown (dentistry)","level":2,"score":0.7145566344261169},{"id":"https://openalex.org/C2780233690","wikidata":"https://www.wikidata.org/wiki/Q535347","display_name":"Transparency (behavior)","level":2,"score":0.5329576134681702},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.45407283306121826},{"id":"https://openalex.org/C133446333","wikidata":"https://www.wikidata.org/wiki/Q38681","display_name":"Bark (sound)","level":2,"score":0.4104352593421936},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.4017198979854584},{"id":"https://openalex.org/C97137747","wikidata":"https://www.wikidata.org/wiki/Q38112","display_name":"Forestry","level":1,"score":0.3772831857204437},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3351493775844574},{"id":"https://openalex.org/C100970517","wikidata":"https://www.wikidata.org/wiki/Q52107","display_name":"Physical geography","level":1,"score":0.3302990794181824},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.3195822238922119},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.11459174752235413},{"id":"https://openalex.org/C199343813","wikidata":"https://www.wikidata.org/wiki/Q12128","display_name":"Dentistry","level":1,"score":0.0},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/igarss47720.2021.9553506","doi":"https://doi.org/10.1109/igarss47720.2021.9553506","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss47720.2021.9553506","pdf_url":null,"source":{"id":"https://openalex.org/S4363604196","display_name":"IEEE International Geoscience and Remote Sensing Symposium (IGARSS)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/15","score":1.0,"display_name":"Life on land"},{"id":"https://metadata.un.org/sdg/13","score":0.685699999332428,"display_name":"Climate action"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":8,"referenced_works":["https://openalex.org/W1939041842","https://openalex.org/W1970354365","https://openalex.org/W1981213426","https://openalex.org/W2068822853","https://openalex.org/W2111801583","https://openalex.org/W2810186738","https://openalex.org/W2900538159","https://openalex.org/W3028164413"],"related_works":["https://openalex.org/W3183877718","https://openalex.org/W7000305008","https://openalex.org/W7125169324","https://openalex.org/W4404191449","https://openalex.org/W4391482611","https://openalex.org/W4392655774","https://openalex.org/W4402259410","https://openalex.org/W2927001792","https://openalex.org/W7135176592","https://openalex.org/W6931670010"],"abstract_inverted_index":{"Droughts":[0],"in":[1,7],"recent":[2],"years":[3],"increased":[4],"tree":[5],"mortality":[6],"Europe.":[8],"Especially":[9],"the":[10,29,74,79],"spruce,":[11],"with":[12],"its":[13],"shallow":[14],"root":[15],"system,":[16],"can":[17],"not":[18],"endure":[19],"extreme":[20],"events":[21],"and":[22,54,76],"loses":[23],"resilience":[24],"to":[25,37,46,49,72,77],"infestations":[26],"such":[27],"as":[28,83],"bark":[30],"beetle.":[31],"We":[32],"developed":[33],"a":[34,43,59,84],"simple":[35],"method":[36],"transfer":[38],"official":[39],"forest":[40],"statistics":[41,57],"of":[42,58,81,91],"reference":[44],"year":[45,61],"larger":[47],"areas":[48],"locate":[50],"affected":[51],"spruce":[52,92],"stands":[53],"retrieve":[55],"actual":[56],"target":[60],"by":[62],"implementing":[63],"Sentinel-2":[64],"data.":[65],"Google":[66],"Earth":[67],"Engine":[68],"(GEE)":[69],"was":[70],"used":[71],"implement":[73],"approach":[75],"investigate":[78],"impact":[80],"elevation,":[82],"key":[85],"environmental":[86],"factor,":[87],"on":[88],"spatial":[89],"patterns":[90],"mortality.":[93]},"counts_by_year":[{"year":2026,"cited_by_count":1}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2021-10-25T00:00:00"}
