{"id":"https://openalex.org/W4229366496","doi":"https://doi.org/10.3390/rs14092270","title":"An Integrated Model of Summer and Winter for Chlorophyll-a Retrieval in the Pearl River Estuary Based on Hyperspectral Data","display_name":"An Integrated Model of Summer and Winter for Chlorophyll-a Retrieval in the Pearl River Estuary Based on Hyperspectral Data","publication_year":2022,"publication_date":"2022-05-08","ids":{"openalex":"https://openalex.org/W4229366496","doi":"https://doi.org/10.3390/rs14092270"},"language":"en","primary_location":{"id":"doi:10.3390/rs14092270","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs14092270","pdf_url":"https://www.mdpi.com/2072-4292/14/9/2270/pdf?version=1652238836","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2072-4292/14/9/2270/pdf?version=1652238836","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100453282","display_name":"Haitao Li","orcid":"https://orcid.org/0000-0001-7274-5798"},"institutions":[{"id":"https://openalex.org/I37987034","display_name":"Guangzhou University","ror":"https://ror.org/05ar8rn06","country_code":"CN","type":"education","lineage":["https://openalex.org/I37987034"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Haitao Li","raw_affiliation_strings":["School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China"],"affiliations":[{"raw_affiliation_string":"School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China","institution_ids":["https://openalex.org/I37987034"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5020254649","display_name":"Xuetong Xie","orcid":"https://orcid.org/0000-0002-1261-7003"},"institutions":[{"id":"https://openalex.org/I37987034","display_name":"Guangzhou University","ror":"https://ror.org/05ar8rn06","country_code":"CN","type":"education","lineage":["https://openalex.org/I37987034"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Xuetong Xie","raw_affiliation_strings":["School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China"],"affiliations":[{"raw_affiliation_string":"School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China","institution_ids":["https://openalex.org/I37987034"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5064999025","display_name":"Xiankun Yang","orcid":null},"institutions":[{"id":"https://openalex.org/I37987034","display_name":"Guangzhou University","ror":"https://ror.org/05ar8rn06","country_code":"CN","type":"education","lineage":["https://openalex.org/I37987034"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiankun Yang","raw_affiliation_strings":["School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China"],"affiliations":[{"raw_affiliation_string":"School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China","institution_ids":["https://openalex.org/I37987034"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5070624038","display_name":"Bowen Cao","orcid":"https://orcid.org/0000-0002-4469-6367"},"institutions":[{"id":"https://openalex.org/I37987034","display_name":"Guangzhou University","ror":"https://ror.org/05ar8rn06","country_code":"CN","type":"education","lineage":["https://openalex.org/I37987034"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Bowen Cao","raw_affiliation_strings":["School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China"],"affiliations":[{"raw_affiliation_string":"School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China","institution_ids":["https://openalex.org/I37987034"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5025064123","display_name":"Xuening Xia","orcid":"https://orcid.org/0000-0002-1473-3876"},"institutions":[{"id":"https://openalex.org/I37987034","display_name":"Guangzhou University","ror":"https://ror.org/05ar8rn06","country_code":"CN","type":"education","lineage":["https://openalex.org/I37987034"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xuening Xia","raw_affiliation_strings":["School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China"],"affiliations":[{"raw_affiliation_string":"School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China","institution_ids":["https://openalex.org/I37987034"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5020254649"],"corresponding_institution_ids":["https://openalex.org/I37987034"],"apc_list":{"value":2500,"currency":"CHF","value_usd":2707},"apc_paid":{"value":2500,"currency":"CHF","value_usd":2707},"fwci":1.7638,"has_fulltext":true,"cited_by_count":12,"citation_normalized_percentile":{"value":0.82411018,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":100},"biblio":{"volume":"14","issue":"9","first_page":"2270","last_page":"2270"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10032","display_name":"Marine and coastal ecosystems","score":0.9973999857902527,"subfield":{"id":"https://openalex.org/subfields/1910","display_name":"Oceanography"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10032","display_name":"Marine and coastal ecosystems","score":0.9973999857902527,"subfield":{"id":"https://openalex.org/subfields/1910","display_name":"Oceanography"},"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/T14249","display_name":"Water Quality Monitoring and Analysis","score":0.9864000082015991,"subfield":{"id":"https://openalex.org/subfields/2311","display_name":"Industrial and Manufacturing Engineering"},"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/T12697","display_name":"Water Quality Monitoring Technologies","score":0.9715999960899353,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"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/hyperspectral-imaging","display_name":"Hyperspectral imaging","score":0.8278331756591797},{"id":"https://openalex.org/keywords/estuary","display_name":"Estuary","score":0.7027968168258667},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.6711416244506836},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.65555739402771},{"id":"https://openalex.org/keywords/multispectral-image","display_name":"Multispectral image","score":0.554092526435852},{"id":"https://openalex.org/keywords/pearl","display_name":"Pearl","score":0.5381650924682617},{"id":"https://openalex.org/keywords/chlorophyll-a","display_name":"Chlorophyll a","score":0.44944360852241516},{"id":"https://openalex.org/keywords/turbidity","display_name":"Turbidity","score":0.4365336000919342},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.4212774634361267},{"id":"https://openalex.org/keywords/oceanography","display_name":"Oceanography","score":0.18921509385108948},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.12773272395133972},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.12044680118560791}],"concepts":[{"id":"https://openalex.org/C159078339","wikidata":"https://www.wikidata.org/wiki/Q959005","display_name":"Hyperspectral imaging","level":2,"score":0.8278331756591797},{"id":"https://openalex.org/C88160329","wikidata":"https://www.wikidata.org/wiki/Q47053","display_name":"Estuary","level":2,"score":0.7027968168258667},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.6711416244506836},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.65555739402771},{"id":"https://openalex.org/C173163844","wikidata":"https://www.wikidata.org/wiki/Q1761440","display_name":"Multispectral image","level":2,"score":0.554092526435852},{"id":"https://openalex.org/C2779251273","wikidata":"https://www.wikidata.org/wiki/Q43436","display_name":"Pearl","level":2,"score":0.5381650924682617},{"id":"https://openalex.org/C2778902199","wikidata":"https://www.wikidata.org/wiki/Q133878","display_name":"Chlorophyll a","level":2,"score":0.44944360852241516},{"id":"https://openalex.org/C64016661","wikidata":"https://www.wikidata.org/wiki/Q898574","display_name":"Turbidity","level":2,"score":0.4365336000919342},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.4212774634361267},{"id":"https://openalex.org/C111368507","wikidata":"https://www.wikidata.org/wiki/Q43518","display_name":"Oceanography","level":1,"score":0.18921509385108948},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.12773272395133972},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.12044680118560791},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","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},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.0},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/rs14092270","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs14092270","pdf_url":"https://www.mdpi.com/2072-4292/14/9/2270/pdf?version=1652238836","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:89eddadc475843c38ce1e6cc87153511","is_oa":true,"landing_page_url":"https://doaj.org/article/89eddadc475843c38ce1e6cc87153511","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Remote Sensing, Vol 14, Iss 9, p 2270 (2022)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2072-4292/14/9/2270/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/rs14092270","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Remote Sensing; Volume 14; Issue 9; Pages: 2270","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/rs14092270","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs14092270","pdf_url":"https://www.mdpi.com/2072-4292/14/9/2270/pdf?version=1652238836","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Life below water","id":"https://metadata.un.org/sdg/14","score":0.6299999952316284}],"awards":[{"id":"https://openalex.org/G12291391","display_name":null,"funder_award_id":"GDNRC [2020]013","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G413480917","display_name":null,"funder_award_id":"41876204","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320318240","display_name":"European Space Agency","ror":"https://ror.org/03wd9za21"},{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4229366496.pdf","grobid_xml":"https://content.openalex.org/works/W4229366496.grobid-xml"},"referenced_works_count":53,"referenced_works":["https://openalex.org/W118251553","https://openalex.org/W1604696333","https://openalex.org/W1967906870","https://openalex.org/W1969058380","https://openalex.org/W1975285091","https://openalex.org/W1979020086","https://openalex.org/W1979315276","https://openalex.org/W1986953729","https://openalex.org/W2018144430","https://openalex.org/W2029924464","https://openalex.org/W2033275608","https://openalex.org/W2040621183","https://openalex.org/W2054463320","https://openalex.org/W2064159456","https://openalex.org/W2069203285","https://openalex.org/W2082714424","https://openalex.org/W2085246541","https://openalex.org/W2086182371","https://openalex.org/W2100738276","https://openalex.org/W2113381057","https://openalex.org/W2129932080","https://openalex.org/W2131713496","https://openalex.org/W2157489734","https://openalex.org/W2168956990","https://openalex.org/W2169694572","https://openalex.org/W2187265752","https://openalex.org/W2218363404","https://openalex.org/W2334998999","https://openalex.org/W2368471286","https://openalex.org/W2386092840","https://openalex.org/W2408672800","https://openalex.org/W2499899645","https://openalex.org/W2508746936","https://openalex.org/W2513884524","https://openalex.org/W2561943163","https://openalex.org/W2568359930","https://openalex.org/W2617448796","https://openalex.org/W2746063108","https://openalex.org/W2801487071","https://openalex.org/W2810956684","https://openalex.org/W2886655862","https://openalex.org/W2886873051","https://openalex.org/W2901609057","https://openalex.org/W2920357066","https://openalex.org/W2971752124","https://openalex.org/W2996160164","https://openalex.org/W3011586568","https://openalex.org/W3135521708","https://openalex.org/W3157451758","https://openalex.org/W3174199693","https://openalex.org/W4232458822","https://openalex.org/W6711236794","https://openalex.org/W6772477880"],"related_works":["https://openalex.org/W4398771981","https://openalex.org/W2072166414","https://openalex.org/W3209970181","https://openalex.org/W2060875994","https://openalex.org/W2022304901","https://openalex.org/W2018850895","https://openalex.org/W1987483041","https://openalex.org/W2988577871","https://openalex.org/W4391030644","https://openalex.org/W4205174160"],"abstract_inverted_index":{"Chlorophyll-a":[0],"(Chla)":[1],"is":[2,21,92,196],"an":[3],"important":[4],"parameter":[5],"for":[6,13,23,80,96,198],"water":[7,66],"quality.":[8],"For":[9],"remote":[10],"sensing-based":[11],"methods":[12],"the":[14,28,58,63,77,87,93,97,102,117,127,131,135,138,148,166,178,185,190],"measurement":[15],"of":[16,36,65,89,99,112,137,157,161,201],"Chla,":[17],"in-situ":[18,37,207],"hyperspectral":[19,38,81],"data":[20,39,208],"crucial":[22],"building":[24],"retrieval":[25,54],"models.":[26],"In":[27],"Pearl":[29,103],"River":[30,104],"Estuary,":[31,105],"we":[32,142],"used":[33],"61":[34],"groups":[35],"and":[40,47,62,110,134,159,163,168,209],"corresponding":[41],"Chla":[42,53,100,199],"concentrations":[43],"collected":[44],"in":[45,101,121,193],"July":[46],"December":[48],"2020":[49],"to":[50,177],"build":[51],"a":[52,144,155],"model":[55,146],"that":[56,86],"takes":[57],"two":[59],"different":[60],"seasons":[61],"turbidity":[64],"into":[67],"consideration.":[68],"The":[69,172],"following":[70],"results":[71],"were":[72],"obtained.":[73],"(1)":[74],"Based":[75],"on":[76,126,205],"pre-processing":[78],"techniques":[79],"data,":[82],"it":[83],"was":[84],"shown":[85],"first-derivative":[88],"680":[90],"nm":[91],"optimal":[94],"band":[95],"estimation":[98],"with":[106],"R2":[107,156],">":[108],"0.8":[109],"MAPE":[111,160],"26.03%.":[113],"(2)":[114],"To":[115],"overcome":[116],"spectral":[118,140],"resolution":[119],"problem":[120],"satellite":[122,133],"image":[123,180],"retrieval,":[124],"based":[125,204],"simulated":[128],"reflectance":[129],"from":[130],"Sentinel-2":[132,179],"shape":[136],"discrete":[139],"curve,":[141],"constructed":[143],"multispectral":[145],"using":[147],"slope":[149,173],"difference":[150,174],"index":[151],"method,":[152],"which":[153],"reached":[154],"0.78":[158],"35.21%":[162],"can":[164],"integrate":[165],"summer":[167],"winter":[169],"data.":[170],"(3)":[171],"method":[175,191],"applied":[176],"shows":[181],"better":[182],"performance":[183],"than":[184],"red-NIR":[186],"ratio":[187],"method.":[188],"Therefore,":[189],"proposed":[192],"this":[194],"paper":[195],"practicable":[197],"monitoring":[200],"coastal":[202],"waters":[203],"both":[206],"images.":[210]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":2}],"updated_date":"2026-04-09T08:11:56.329763","created_date":"2022-05-10T00:00:00"}