{"id":"https://openalex.org/W2171919524","doi":"https://doi.org/10.1109/igarss.2002.1025777","title":"Algorithms for spatial scaling of net primary productivity using subpixel information","display_name":"Algorithms for spatial scaling of net primary productivity using subpixel information","publication_year":2003,"publication_date":"2003-10-01","ids":{"openalex":"https://openalex.org/W2171919524","doi":"https://doi.org/10.1109/igarss.2002.1025777","mag":"2171919524"},"language":"en","primary_location":{"id":"doi:10.1109/igarss.2002.1025777","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2002.1025777","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"},"type":"article","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/A5055561044","display_name":"Atila Zeli\u0107","orcid":null},"institutions":[{"id":"https://openalex.org/I185261750","display_name":"University of Toronto","ror":"https://ror.org/03dbr7087","country_code":"CA","type":"education","lineage":["https://openalex.org/I185261750"]}],"countries":["CA"],"is_corresponding":true,"raw_author_name":"A. Zelic","raw_affiliation_strings":["Department of Geography, University of Toronto, Toronto, ONT, Canada"],"affiliations":[{"raw_affiliation_string":"Department of Geography, University of Toronto, Toronto, ONT, Canada","institution_ids":["https://openalex.org/I185261750"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5051458433","display_name":"J.M. Chen","orcid":null},"institutions":[{"id":"https://openalex.org/I185261750","display_name":"University of Toronto","ror":"https://ror.org/03dbr7087","country_code":"CA","type":"education","lineage":["https://openalex.org/I185261750"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"J.M. Chen","raw_affiliation_strings":["Department of Geography, University of Toronto, Toronto, ONT, Canada"],"affiliations":[{"raw_affiliation_string":"Department of Geography, University of Toronto, Toronto, ONT, Canada","institution_ids":["https://openalex.org/I185261750"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5062138355","display_name":"Jane Liu","orcid":"https://orcid.org/0000-0001-7760-2788"},"institutions":[{"id":"https://openalex.org/I185261750","display_name":"University of Toronto","ror":"https://ror.org/03dbr7087","country_code":"CA","type":"education","lineage":["https://openalex.org/I185261750"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"J. Liu","raw_affiliation_strings":["Department of Physics, University of Toronto, Toronto, ONT, Canada"],"affiliations":[{"raw_affiliation_string":"Department of Physics, University of Toronto, Toronto, ONT, Canada","institution_ids":["https://openalex.org/I185261750"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5111704618","display_name":"F. Csillag","orcid":null},"institutions":[{"id":"https://openalex.org/I185261750","display_name":"University of Toronto","ror":"https://ror.org/03dbr7087","country_code":"CA","type":"education","lineage":["https://openalex.org/I185261750"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"F. Csillag","raw_affiliation_strings":["Department of Geography, University of Toronto, Toronto, ONT, Canada"],"affiliations":[{"raw_affiliation_string":"Department of Geography, University of Toronto, Toronto, ONT, Canada","institution_ids":["https://openalex.org/I185261750"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5055561044"],"corresponding_institution_ids":["https://openalex.org/I185261750"],"apc_list":null,"apc_paid":null,"fwci":0.3199,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.65982817,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"2","issue":null,"first_page":"1066","last_page":"1068"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10111","display_name":"Remote Sensing in Agriculture","score":0.9991000294685364,"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":0.9991000294685364,"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/T10226","display_name":"Land Use and Ecosystem Services","score":0.9932000041007996,"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/T10770","display_name":"Soil Geostatistics and Mapping","score":0.9921000003814697,"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/subpixel-rendering","display_name":"Subpixel rendering","score":0.8111312389373779},{"id":"https://openalex.org/keywords/primary-production","display_name":"Primary production","score":0.7832005620002747},{"id":"https://openalex.org/keywords/scaling","display_name":"Scaling","score":0.7366473078727722},{"id":"https://openalex.org/keywords/pixel","display_name":"Pixel","score":0.7234668731689453},{"id":"https://openalex.org/keywords/image-resolution","display_name":"Image resolution","score":0.6516605615615845},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.631209671497345},{"id":"https://openalex.org/keywords/land-cover","display_name":"Land cover","score":0.574297308921814},{"id":"https://openalex.org/keywords/deciduous","display_name":"Deciduous","score":0.5282475352287292},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.5157878398895264},{"id":"https://openalex.org/keywords/productivity","display_name":"Productivity","score":0.49453088641166687},{"id":"https://openalex.org/keywords/boreal","display_name":"Boreal","score":0.44820502400398254},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.44114935398101807},{"id":"https://openalex.org/keywords/ecosystem","display_name":"Ecosystem","score":0.4203353822231293},{"id":"https://openalex.org/keywords/spatial-heterogeneity","display_name":"Spatial heterogeneity","score":0.411724716424942},{"id":"https://openalex.org/keywords/land-use","display_name":"Land use","score":0.3284013271331787},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.19500821828842163},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.15118315815925598},{"id":"https://openalex.org/keywords/ecology","display_name":"Ecology","score":0.13789361715316772},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.13705983757972717},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.09443917870521545}],"concepts":[{"id":"https://openalex.org/C68516990","wikidata":"https://www.wikidata.org/wiki/Q452912","display_name":"Subpixel rendering","level":3,"score":0.8111312389373779},{"id":"https://openalex.org/C24717449","wikidata":"https://www.wikidata.org/wiki/Q515905","display_name":"Primary production","level":3,"score":0.7832005620002747},{"id":"https://openalex.org/C99844830","wikidata":"https://www.wikidata.org/wiki/Q102441924","display_name":"Scaling","level":2,"score":0.7366473078727722},{"id":"https://openalex.org/C160633673","wikidata":"https://www.wikidata.org/wiki/Q355198","display_name":"Pixel","level":2,"score":0.7234668731689453},{"id":"https://openalex.org/C205372480","wikidata":"https://www.wikidata.org/wiki/Q210521","display_name":"Image resolution","level":2,"score":0.6516605615615845},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.631209671497345},{"id":"https://openalex.org/C2780648208","wikidata":"https://www.wikidata.org/wiki/Q3001793","display_name":"Land cover","level":3,"score":0.574297308921814},{"id":"https://openalex.org/C33283694","wikidata":"https://www.wikidata.org/wiki/Q1131316","display_name":"Deciduous","level":2,"score":0.5282475352287292},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.5157878398895264},{"id":"https://openalex.org/C204983608","wikidata":"https://www.wikidata.org/wiki/Q2111958","display_name":"Productivity","level":2,"score":0.49453088641166687},{"id":"https://openalex.org/C100537666","wikidata":"https://www.wikidata.org/wiki/Q893477","display_name":"Boreal","level":2,"score":0.44820502400398254},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.44114935398101807},{"id":"https://openalex.org/C110872660","wikidata":"https://www.wikidata.org/wiki/Q37813","display_name":"Ecosystem","level":2,"score":0.4203353822231293},{"id":"https://openalex.org/C180478619","wikidata":"https://www.wikidata.org/wiki/Q7574066","display_name":"Spatial heterogeneity","level":2,"score":0.411724716424942},{"id":"https://openalex.org/C4792198","wikidata":"https://www.wikidata.org/wiki/Q1165944","display_name":"Land use","level":2,"score":0.3284013271331787},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.19500821828842163},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.15118315815925598},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.13789361715316772},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.13705983757972717},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.09443917870521545},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C139719470","wikidata":"https://www.wikidata.org/wiki/Q39680","display_name":"Macroeconomics","level":1,"score":0.0},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","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}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/igarss.2002.1025777","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2002.1025777","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.67.6249","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.67.6249","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://eratos.erin.utoronto.ca/fcs/MIX/zelica_igarss02.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":6,"referenced_works":["https://openalex.org/W1555533958","https://openalex.org/W1998776407","https://openalex.org/W2028891572","https://openalex.org/W2109030838","https://openalex.org/W2158834676","https://openalex.org/W7052304606"],"related_works":["https://openalex.org/W2369528593","https://openalex.org/W2385629811","https://openalex.org/W2638735979","https://openalex.org/W2111510641","https://openalex.org/W2098262287","https://openalex.org/W2565768794","https://openalex.org/W2469593985","https://openalex.org/W1551599253","https://openalex.org/W4379548836","https://openalex.org/W4377191975"],"abstract_inverted_index":{"Spatial":[0],"scaling":[1,47,62],"is":[2,16,56,89,94,138,142,168,179],"of":[3,48,63,87,159],"particular":[4],"importance":[5],"in":[6,201],"remote":[7],"sensing":[8],"applications":[9],"to":[10,45,57,109,152],"terrestrial":[11],"ecosystems":[12],"where":[13],"spatial":[14,46,61],"heterogeneity":[15,133],"the":[17,35,79,128,135,166,183],"norm.":[18],"Surface":[19],"parameters":[20],"derived":[21,33],"at":[22,70],"different":[23,28],"resolutions":[24,75],"can":[25,104,124],"be":[26,105,125],"considerably":[27,106],"even":[29],"though":[30],"they":[31],"are":[32,173,204],"using":[34,65,78,206],"same":[36,129],"algorithms":[37,59,196],"or":[38],"models.":[39],"This":[40],"article":[41],"addresses":[42],"issues":[43],"related":[44],"net":[49],"primary":[50],"productivity":[51],"(NPP).":[52],"The":[53,85,140],"main":[54],"objective":[55],"develop":[58],"for":[60,197],"NPP":[64,68,122,157,203],"subpixel":[66,207],"information.":[67,210],"calculations":[69,103],"30":[71],"m":[72],"and":[73,120,155,185],"1km":[74],"were":[76],"performed":[77],"Boreal":[80],"Ecosystem":[81],"Productivity":[82],"Simulator":[83],"(BEPS).":[84],"area":[86],"interest":[88],"near":[90],"Fraserdale,":[91],"Ontario.":[92],"It":[93],"found":[95],"from":[96,112],"this":[97],"investigation":[98],"that":[99,118],"lumped":[100,202],"(coarse":[101],"resolution)":[102,115],"biased":[107,126],"(up":[108],"64":[110],"%)":[111],"distributed":[113],"(fine":[114],"case,":[116],"suggesting":[117],"global":[119],"regional":[121],"maps":[123],"by":[127],"amount":[130],"if":[131],"surface":[132],"within":[134,189],"mapping":[136],"resolution":[137],"ignored.":[139],"bias":[141,167],"negative":[143,169],"when":[144,170],"conifer-labeled":[145,190],"pixels":[146,172],"contain":[147],"considerable":[148],"deciduous":[149],"forests.":[150],"Due":[151],"relatively":[153],"high":[154],"variable":[156],"values":[158],"open":[160,176,186],"land":[161,187,208],"areas":[162],"with":[163,175],"growing":[164],"grasses,":[165],"deciduous-labeled":[171],"mixed":[174],"land.":[177],"There":[178],"no":[180],"trend":[181],"between":[182],"biasness":[184],"fractions":[188],"pixels.":[191],"Based":[192],"on":[193],"these":[194,199],"results,":[195],"removing":[198],"biases":[200],"developed":[205],"cover":[209]},"counts_by_year":[],"updated_date":"2026-04-05T17:49:38.594831","created_date":"2025-10-10T00:00:00"}