{"id":"https://openalex.org/W2125591973","doi":"https://doi.org/10.1109/tgrs.2009.2013842","title":"A Critical Look at Deriving Monthly Aerosol Optical Depth From Satellite Data","display_name":"A Critical Look at Deriving Monthly Aerosol Optical Depth From Satellite Data","publication_year":2009,"publication_date":"2009-03-31","ids":{"openalex":"https://openalex.org/W2125591973","doi":"https://doi.org/10.1109/tgrs.2009.2013842","mag":"2125591973"},"language":"en","primary_location":{"id":"doi:10.1109/tgrs.2009.2013842","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tgrs.2009.2013842","pdf_url":null,"source":{"id":"https://openalex.org/S111326731","display_name":"IEEE Transactions on Geoscience and Remote Sensing","issn_l":"0196-2892","issn":["0196-2892","1558-0644"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Geoscience and Remote Sensing","raw_type":"journal-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/A5047290029","display_name":"R. C. Levy","orcid":"https://orcid.org/0000-0002-8933-5303"},"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":"R.C. Levy","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA","Science Systems and Applications, Inc., Lanham, MD, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]},{"raw_affiliation_string":"Science Systems and Applications, Inc., Lanham, MD, USA","institution_ids":["https://openalex.org/I4210144891"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5112280396","display_name":"G. Leptoukh","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":"G.G. Leptoukh","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/A5090476159","display_name":"Ralph A. Kahn","orcid":"https://orcid.org/0000-0002-5234-6359"},"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":"R. Kahn","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/A5110669450","display_name":"V. G. Zubko","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":"V. Zubko","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/A5020467793","display_name":"Arun Gopalan","orcid":"https://orcid.org/0000-0003-0281-350X"},"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":"A. Gopalan","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":"last","author":{"id":"https://openalex.org/A5067953923","display_name":"L. A. Remer","orcid":"https://orcid.org/0000-0003-4333-533X"},"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":"L.A. Remer","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":6,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":12.2907,"has_fulltext":false,"cited_by_count":162,"citation_normalized_percentile":{"value":0.99015512,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":96,"max":100},"biblio":{"volume":"47","issue":"8","first_page":"2942","last_page":"2956"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10347","display_name":"Atmospheric aerosols and clouds","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T10347","display_name":"Atmospheric aerosols and clouds","score":0.9998999834060669,"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/T10075","display_name":"Atmospheric chemistry and aerosols","score":0.9987000226974487,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11588","display_name":"Atmospheric and Environmental Gas Dynamics","score":0.9968000054359436,"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/satellite","display_name":"Satellite","score":0.7735422849655151},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.730036199092865},{"id":"https://openalex.org/keywords/weighting","display_name":"Weighting","score":0.7220498919487},{"id":"https://openalex.org/keywords/aerosol","display_name":"Aerosol","score":0.6630197763442993},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.6432741284370422},{"id":"https://openalex.org/keywords/moderate-resolution-imaging-spectroradiometer","display_name":"Moderate-resolution imaging spectroradiometer","score":0.6321828365325928},{"id":"https://openalex.org/keywords/sampling","display_name":"Sampling (signal processing)","score":0.6010050773620605},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.5551076531410217},{"id":"https://openalex.org/keywords/image-resolution","display_name":"Image resolution","score":0.4403296709060669},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.31475383043289185},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.18916261196136475},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.1704762578010559}],"concepts":[{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.7735422849655151},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.730036199092865},{"id":"https://openalex.org/C183115368","wikidata":"https://www.wikidata.org/wiki/Q856577","display_name":"Weighting","level":2,"score":0.7220498919487},{"id":"https://openalex.org/C2779345167","wikidata":"https://www.wikidata.org/wiki/Q104541","display_name":"Aerosol","level":2,"score":0.6630197763442993},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.6432741284370422},{"id":"https://openalex.org/C2777007095","wikidata":"https://www.wikidata.org/wiki/Q676840","display_name":"Moderate-resolution imaging spectroradiometer","level":3,"score":0.6321828365325928},{"id":"https://openalex.org/C140779682","wikidata":"https://www.wikidata.org/wiki/Q210868","display_name":"Sampling (signal processing)","level":3,"score":0.6010050773620605},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.5551076531410217},{"id":"https://openalex.org/C205372480","wikidata":"https://www.wikidata.org/wiki/Q210521","display_name":"Image resolution","level":2,"score":0.4403296709060669},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.31475383043289185},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.18916261196136475},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.1704762578010559},{"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/C126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","level":1,"score":0.0},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.0},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","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/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tgrs.2009.2013842","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tgrs.2009.2013842","pdf_url":null,"source":{"id":"https://openalex.org/S111326731","display_name":"IEEE Transactions on Geoscience and Remote Sensing","issn_l":"0196-2892","issn":["0196-2892","1558-0644"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Geoscience and Remote Sensing","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":26,"referenced_works":["https://openalex.org/W1520428197","https://openalex.org/W1524392826","https://openalex.org/W1990402134","https://openalex.org/W1993065427","https://openalex.org/W2018987657","https://openalex.org/W2034000133","https://openalex.org/W2040746851","https://openalex.org/W2047503300","https://openalex.org/W2048522484","https://openalex.org/W2048801813","https://openalex.org/W2056185165","https://openalex.org/W2057353349","https://openalex.org/W2058675945","https://openalex.org/W2083128385","https://openalex.org/W2087350596","https://openalex.org/W2089433206","https://openalex.org/W2110325329","https://openalex.org/W2112335693","https://openalex.org/W2112471372","https://openalex.org/W2125855972","https://openalex.org/W2131904610","https://openalex.org/W2139937607","https://openalex.org/W2145265567","https://openalex.org/W2163863801","https://openalex.org/W2165372507","https://openalex.org/W2176518592"],"related_works":["https://openalex.org/W3126136541","https://openalex.org/W2180954594","https://openalex.org/W2052835778","https://openalex.org/W2896789315","https://openalex.org/W2941835033","https://openalex.org/W2049003611","https://openalex.org/W4213416983","https://openalex.org/W2108418243","https://openalex.org/W2127804977","https://openalex.org/W3039650532"],"abstract_inverted_index":{"Satellite-derived":[0],"aerosol":[1,23],"data":[2,104],"sets,":[3],"such":[4,62],"as":[5,63],"those":[6],"provided":[7],"by":[8,137,149],"NASA's":[9],"Moderate":[10],"Resolution":[11],"Imaging":[12],"Spectroradiometer":[13],"(MODIS)":[14],"instruments,":[15],"are":[16,29,97],"greatly":[17],"improving":[18],"our":[19],"understanding":[20],"of":[21,77,84,131,143],"global":[22,119,134],"optical":[24],"depth":[25],"(AOD).":[26],"Yet,":[27],"there":[28],"sampling":[30,109],"issues.":[31],"MODIS'":[32],"specific":[33],"orbital":[34],"geometry,":[35],"convolved":[36],"with":[37],"the":[38,72,78,82,85],"need":[39],"to":[40,81,158],"avoid":[41],"bright":[42],"surfaces":[43],"(glint,":[44],"desert,":[45],"clouds,":[46],"etc.),":[47],"means":[48,135],"that":[49],"AOD":[50],"can":[51,111,155],"be":[52,93,112,156],"under-":[53],"or":[54,65,118,139],"over-sampled":[55],"in":[56,129],"places.":[57],"When":[58],"deriving":[59,116],"downstream":[60],"products,":[61],"daily":[64],"monthly":[66],"gridded":[67],"AOD,":[68],"one":[69],"must":[70],"consider":[71],"spatial":[73],"and":[74,106,108,126,133,151,154,164],"temporal":[75],"density":[76],"measurements":[79],"relative":[80],"gradients":[83],"true":[86],"AOD.":[87,121],"Additionally,":[88],"retrieval":[89,165],"confidence":[90],"criteria":[91],"should":[92],"considered.":[94],"Averaged":[95],"products":[96],"highly":[98],"dependent":[99],"on":[100],"choices":[101,123],"made":[102],"for":[103,124,162],"aggregation":[105,125],"weighting,":[107],"errors":[110],"further":[113],"propagated":[114],"when":[115],"regional":[117,132],"ldquomeanrdquo":[120],"Different":[122],"weighting":[127],"result":[128],"estimates":[130],"varying":[136],"30%":[138],"more.":[140],"The":[141],"impacts":[142],"a":[144],"particular":[145],"averaging":[146],"algorithm":[147],"vary":[148],"region":[150],"surface":[152],"type":[153],"shown":[157],"represent":[159],"different":[160],"tolerance":[161],"clouds":[163],"confidence.":[166]},"counts_by_year":[{"year":2025,"cited_by_count":4},{"year":2024,"cited_by_count":7},{"year":2023,"cited_by_count":7},{"year":2022,"cited_by_count":16},{"year":2021,"cited_by_count":14},{"year":2020,"cited_by_count":8},{"year":2019,"cited_by_count":9},{"year":2018,"cited_by_count":3},{"year":2017,"cited_by_count":8},{"year":2016,"cited_by_count":5},{"year":2015,"cited_by_count":7},{"year":2014,"cited_by_count":8},{"year":2013,"cited_by_count":16},{"year":2012,"cited_by_count":20}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
