{"id":"https://openalex.org/W2972034024","doi":"https://doi.org/10.1109/agro-geoinformatics.2019.8820606","title":"Drought monitoring using MODIS derived perpendicular drought indexes","display_name":"Drought monitoring using MODIS derived perpendicular drought indexes","publication_year":2019,"publication_date":"2019-07-01","ids":{"openalex":"https://openalex.org/W2972034024","doi":"https://doi.org/10.1109/agro-geoinformatics.2019.8820606","mag":"2972034024"},"language":"en","primary_location":{"id":"doi:10.1109/agro-geoinformatics.2019.8820606","is_oa":false,"landing_page_url":"https://doi.org/10.1109/agro-geoinformatics.2019.8820606","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2019 8th International Conference on Agro-Geoinformatics (Agro-Geoinformatics)","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/A5100437874","display_name":"Yuanyuan Chen","orcid":"https://orcid.org/0000-0002-5841-7154"},"institutions":[{"id":"https://openalex.org/I4210120962","display_name":"Chinese Academy of Agricultural Engineering","ror":"https://ror.org/02ag25v06","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210120962","https://openalex.org/I4210127390","https://openalex.org/I4210151987"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yuanyuan Chen","raw_affiliation_strings":["Key Laboratory of Cultivated Land Use, Chinese Academy of Agricultural Engineering Planning & Design, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Key Laboratory of Cultivated Land Use, Chinese Academy of Agricultural Engineering Planning & Design, Beijing, China","institution_ids":["https://openalex.org/I4210120962"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5112546898","display_name":"Li Sun","orcid":null},"institutions":[{"id":"https://openalex.org/I4210120962","display_name":"Chinese Academy of Agricultural Engineering","ror":"https://ror.org/02ag25v06","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210120962","https://openalex.org/I4210127390","https://openalex.org/I4210151987"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Li Sun","raw_affiliation_strings":["Key Laboratory of Cultivated Land Use, Chinese Academy of Agricultural Engineering Planning & Design, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Key Laboratory of Cultivated Land Use, Chinese Academy of Agricultural Engineering Planning & Design, Beijing, China","institution_ids":["https://openalex.org/I4210120962"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100399867","display_name":"Kai Liu","orcid":"https://orcid.org/0000-0002-1829-7557"},"institutions":[{"id":"https://openalex.org/I4210120962","display_name":"Chinese Academy of Agricultural Engineering","ror":"https://ror.org/02ag25v06","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210120962","https://openalex.org/I4210127390","https://openalex.org/I4210151987"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Kai Liu","raw_affiliation_strings":["Key Laboratory of Cultivated Land Use, Chinese Academy of Agricultural Engineering Planning & Design, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Key Laboratory of Cultivated Land Use, Chinese Academy of Agricultural Engineering Planning & Design, Beijing, China","institution_ids":["https://openalex.org/I4210120962"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5069928666","display_name":"Zhiyuan Pei","orcid":"https://orcid.org/0009-0003-2132-7600"},"institutions":[{"id":"https://openalex.org/I4210120962","display_name":"Chinese Academy of Agricultural Engineering","ror":"https://ror.org/02ag25v06","country_code":"CN","type":"government","lineage":["https://openalex.org/I4210120962","https://openalex.org/I4210127390","https://openalex.org/I4210151987"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhiyuan Pei","raw_affiliation_strings":["Key Laboratory of Cultivated Land Use, Chinese Academy of Agricultural Engineering Planning & Design, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Key Laboratory of Cultivated Land Use, Chinese Academy of Agricultural Engineering Planning & Design, Beijing, China","institution_ids":["https://openalex.org/I4210120962"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I4210120962"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"4"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11186","display_name":"Hydrology and Drought Analysis","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/T11186","display_name":"Hydrology and Drought Analysis","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/T10330","display_name":"Hydrology and Watershed Management Studies","score":0.9883999824523926,"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"}},{"id":"https://openalex.org/T10029","display_name":"Climate variability and models","score":0.9879000186920166,"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/environmental-science","display_name":"Environmental science","score":0.6538854837417603},{"id":"https://openalex.org/keywords/water-content","display_name":"Water content","score":0.6045039892196655},{"id":"https://openalex.org/keywords/perpendicular","display_name":"Perpendicular","score":0.577299177646637},{"id":"https://openalex.org/keywords/vegetation","display_name":"Vegetation (pathology)","score":0.5736366510391235},{"id":"https://openalex.org/keywords/soil-water","display_name":"Soil water","score":0.5312725305557251},{"id":"https://openalex.org/keywords/agriculture","display_name":"Agriculture","score":0.47283583879470825},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.37760165333747864},{"id":"https://openalex.org/keywords/soil-science","display_name":"Soil science","score":0.32680708169937134},{"id":"https://openalex.org/keywords/hydrology","display_name":"Hydrology (agriculture)","score":0.3224034905433655},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.23847240209579468},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.15129199624061584},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.13549068570137024}],"concepts":[{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.6538854837417603},{"id":"https://openalex.org/C24939127","wikidata":"https://www.wikidata.org/wiki/Q373499","display_name":"Water content","level":2,"score":0.6045039892196655},{"id":"https://openalex.org/C199631012","wikidata":"https://www.wikidata.org/wiki/Q205034","display_name":"Perpendicular","level":2,"score":0.577299177646637},{"id":"https://openalex.org/C2776133958","wikidata":"https://www.wikidata.org/wiki/Q7918366","display_name":"Vegetation (pathology)","level":2,"score":0.5736366510391235},{"id":"https://openalex.org/C159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","level":2,"score":0.5312725305557251},{"id":"https://openalex.org/C118518473","wikidata":"https://www.wikidata.org/wiki/Q11451","display_name":"Agriculture","level":2,"score":0.47283583879470825},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.37760165333747864},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","level":1,"score":0.32680708169937134},{"id":"https://openalex.org/C76886044","wikidata":"https://www.wikidata.org/wiki/Q2883300","display_name":"Hydrology (agriculture)","level":2,"score":0.3224034905433655},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.23847240209579468},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.15129199624061584},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.13549068570137024},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.0},{"id":"https://openalex.org/C187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","level":1,"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/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","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/agro-geoinformatics.2019.8820606","is_oa":false,"landing_page_url":"https://doi.org/10.1109/agro-geoinformatics.2019.8820606","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2019 8th International Conference on Agro-Geoinformatics (Agro-Geoinformatics)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.6200000047683716,"display_name":"Zero hunger","id":"https://metadata.un.org/sdg/2"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":7,"referenced_works":["https://openalex.org/W1966159511","https://openalex.org/W2036857303","https://openalex.org/W2044448107","https://openalex.org/W2345085948","https://openalex.org/W2560775747","https://openalex.org/W2768147268","https://openalex.org/W6730905527"],"related_works":["https://openalex.org/W2008804768","https://openalex.org/W2108512031","https://openalex.org/W2063755384","https://openalex.org/W2048409327","https://openalex.org/W2153306223","https://openalex.org/W2997015357","https://openalex.org/W2390117385","https://openalex.org/W2123825282","https://openalex.org/W2361720056","https://openalex.org/W1977273908"],"abstract_inverted_index":{"Drought":[0],"is":[1],"one":[2],"of":[3,73,105,162,170],"the":[4,55,93,103,126,150,159,167],"most":[5],"complex":[6],"natural":[7],"hazards":[8],"that":[9],"can":[10],"produce":[11],"devastating":[12],"impacts":[13],"on":[14,18],"many":[15],"aspects,":[16],"especially":[17],"agricultural":[19,48],"production.":[20],"Insufficient":[21],"site":[22],"observation":[23],"data":[24,88],"for":[25,35],"drought":[26,39,49,59,65,96,130,151],"monitoring":[27],"makes":[28],"remote":[29],"sensing":[30],"technique":[31],"a":[32,146],"key":[33],"issue":[34],"global":[36],"and":[37,44,62,76,82,89,125,134,136,156,158,172],"regional":[38],"assessment":[40],"with":[41,166],"high":[42],"spatial":[43],"temporal":[45],"resolutions.":[46],"Some":[47],"indexes":[50],"have":[51,68],"been":[52],"developed":[53],"during":[54],"last":[56],"decade.":[57],"Perpendicular":[58],"index":[60,66],"(PDI)":[61],"modified":[63],"perpendicular":[64,129],"(MPDI)":[67],"received":[69],"considerable":[70],"attention":[71],"because":[72],"their":[74],"simplicity":[75],"efficacy.":[77],"In":[78],"this":[79],"paper,":[80],"PDI":[81,133,155],"MPDI":[83,157],"were":[84],"calculated":[85],"using":[86,113],"MODIS":[87],"applied":[90],"to":[91,122],"assess":[92],"2018":[94],"spring":[95],"under":[97],"dense":[98],"vegetation":[99],"cover":[100],"condition":[101],"in":[102,114,137],"south":[104],"Hebei":[106],"Province.":[107],"The":[108],"validation":[109],"was":[110,142],"carried":[111],"out":[112],"situ":[115,138],"relative":[116],"soil":[117,139,163],"water":[118,140,164],"content":[119,141],"from":[120],"0":[121],"10":[123],"cm":[124],"consistency":[127],"between":[128,149],"indexes,":[131],"including":[132],"MPDI,":[135],"analyzed.":[143],"Result":[144],"shows":[145],"good":[147],"agreement":[148],"information":[152],"extracted":[153],"by":[154],"field":[160],"measurement":[161],"content,":[165],"correlation":[168],"coefficients":[169],"-0.62":[171],"-0.74.":[173]},"counts_by_year":[{"year":2023,"cited_by_count":1}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}