{"id":"https://openalex.org/W1978129564","doi":"https://doi.org/10.1109/igarss.2008.4779676","title":"Derivation of sub-footprint scale /Spl sigma/<sup>0</sup> observed by TRMM Precipitation Radar","display_name":"Derivation of sub-footprint scale /Spl sigma/<sup>0</sup> observed by TRMM Precipitation Radar","publication_year":2008,"publication_date":"2008-01-01","ids":{"openalex":"https://openalex.org/W1978129564","doi":"https://doi.org/10.1109/igarss.2008.4779676","mag":"1978129564"},"language":"en","primary_location":{"id":"doi:10.1109/igarss.2008.4779676","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2008.4779676","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium","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/A5028368787","display_name":"T. Tagawa","orcid":null},"institutions":[{"id":"https://openalex.org/I2800865746","display_name":"Japan Aerospace Exploration Agency","ror":"https://ror.org/059yhyy33","country_code":"JP","type":"facility","lineage":["https://openalex.org/I2800865746"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Tetsuya Tagawa","raw_affiliation_strings":["Uchu Koku Kenkyu Kaihatsu Kiko, Chofu, Tokyo, JP","Earth Obs. Res. Center, Japan Aerosp. Exploration Agency, Tsukuba"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Uchu Koku Kenkyu Kaihatsu Kiko, Chofu, Tokyo, JP","institution_ids":[]},{"raw_affiliation_string":"Earth Obs. Res. Center, Japan Aerosp. Exploration Agency, Tsukuba","institution_ids":["https://openalex.org/I2800865746"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5023309521","display_name":"Shuji Shimizu","orcid":"https://orcid.org/0009-0002-8904-8504"},"institutions":[{"id":"https://openalex.org/I2800865746","display_name":"Japan Aerospace Exploration Agency","ror":"https://ror.org/059yhyy33","country_code":"JP","type":"facility","lineage":["https://openalex.org/I2800865746"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Shuji Shimizu","raw_affiliation_strings":["Uchu Koku Kenkyu Kaihatsu Kiko, Chofu, Tokyo, JP","Earth Obs. Res. Center, Japan Aerosp. Exploration Agency, Tsukuba"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Uchu Koku Kenkyu Kaihatsu Kiko, Chofu, Tokyo, JP","institution_ids":[]},{"raw_affiliation_string":"Earth Obs. Res. Center, Japan Aerosp. Exploration Agency, Tsukuba","institution_ids":["https://openalex.org/I2800865746"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5052969716","display_name":"Riko Oki","orcid":null},"institutions":[{"id":"https://openalex.org/I2800865746","display_name":"Japan Aerospace Exploration Agency","ror":"https://ror.org/059yhyy33","country_code":"JP","type":"facility","lineage":["https://openalex.org/I2800865746"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Riko Oki","raw_affiliation_strings":["Uchu Koku Kenkyu Kaihatsu Kiko, Chofu, Tokyo, JP","Earth Obs. Res. Center, Japan Aerosp. Exploration Agency, Tsukuba"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Uchu Koku Kenkyu Kaihatsu Kiko, Chofu, Tokyo, JP","institution_ids":[]},{"raw_affiliation_string":"Earth Obs. Res. Center, Japan Aerosp. Exploration Agency, Tsukuba","institution_ids":["https://openalex.org/I2800865746"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I2800865746"],"apc_list":null,"apc_paid":null,"fwci":1.6609,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.78325123,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"e78 b","issue":null,"first_page":"IV ","last_page":" 137"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11234","display_name":"Precipitation Measurement and Analysis","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T11234","display_name":"Precipitation Measurement and Analysis","score":1.0,"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/T10466","display_name":"Meteorological Phenomena and Simulations","score":0.9995999932289124,"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/T10029","display_name":"Climate variability and models","score":0.9983000159263611,"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/sigma","display_name":"Sigma","score":0.5729645490646362},{"id":"https://openalex.org/keywords/footprint","display_name":"Footprint","score":0.5190820693969727},{"id":"https://openalex.org/keywords/radar","display_name":"Radar","score":0.4724217653274536},{"id":"https://openalex.org/keywords/scale","display_name":"Scale (ratio)","score":0.46809959411621094},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.43925657868385315},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.4009101390838623},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.363515168428421},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3019130825996399},{"id":"https://openalex.org/keywords/quantum-mechanics","display_name":"Quantum mechanics","score":0.0948234498500824},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.09339013695716858},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.07999283075332642}],"concepts":[{"id":"https://openalex.org/C2778049214","wikidata":"https://www.wikidata.org/wiki/Q7512234","display_name":"Sigma","level":2,"score":0.5729645490646362},{"id":"https://openalex.org/C132943942","wikidata":"https://www.wikidata.org/wiki/Q2562511","display_name":"Footprint","level":2,"score":0.5190820693969727},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.4724217653274536},{"id":"https://openalex.org/C2778755073","wikidata":"https://www.wikidata.org/wiki/Q10858537","display_name":"Scale (ratio)","level":2,"score":0.46809959411621094},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.43925657868385315},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.4009101390838623},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.363515168428421},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3019130825996399},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0948234498500824},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.09339013695716858},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.07999283075332642},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/igarss.2008.4779676","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2008.4779676","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":6,"referenced_works":["https://openalex.org/W159345959","https://openalex.org/W1973379370","https://openalex.org/W2119655155","https://openalex.org/W2162903715","https://openalex.org/W2177765990","https://openalex.org/W6606424286"],"related_works":["https://openalex.org/W2368534554","https://openalex.org/W2148469257","https://openalex.org/W2999244305","https://openalex.org/W2330537534","https://openalex.org/W2168827721","https://openalex.org/W2094506573","https://openalex.org/W2031194604","https://openalex.org/W4249517016","https://openalex.org/W2139939267","https://openalex.org/W1974511032"],"abstract_inverted_index":{"To":[0],"derive":[1],"the":[2,14,27,30,44,53,82,90,99,103,116,120,134,139,144,157],"sub-footprint":[3,15,19,71,140],"scale":[4,20,72,118,141],"sigma0from":[5],"TRMM/PR":[6],"observation":[7],"datasets,":[8],"a":[9],"new":[10],"formulation":[11],"to":[12,58],"calculate":[13],"sigma0is":[16],"devised.":[17],"The":[18,48,107,131,150],"sigma0would":[21],"be":[22,59,112],"useful":[23],"to,":[24],"(1)":[25],"relieve":[26],"underestimate":[28,108],"of":[29,46,78,105,109,133,156],"path":[31],"integrated":[32],"attenuation":[33],"(PIA)":[34],"at":[35,63,160],"off-nadir":[36,64,161],"angle":[37,65,129,162],"observations":[38,66,94,163],"over":[39,67,95,164],"land,":[40,96],"and":[41,102],"(2)":[42],"examine":[43],"nonuniformity":[45,104],"rainfall.":[47],"PIA":[49,110],"estimated":[50,137],"from":[51],"sigma0of":[52],"standard":[54],"product":[55],"\"2A21\"":[56],"tends":[57],"biased":[60],"toward":[61],"small":[62],"land.":[68,165],"Because":[69],"2-6":[70],"sigma0exists":[73],"within":[74],"one":[75],"instantaneous":[76],"field":[77],"view":[79],"(IFOV),":[80],"sigma0at":[81],"surface":[83,100],"echo":[84],"peak":[85],"is":[86,148],"likely":[87],"unrepresentative":[88],"for":[89,93,127],"IFOV":[91,121],"especially":[92],"depending":[97],"on":[98,143],"conditions":[101],"rain.":[106],"can":[111],"relieved":[113],"by":[114,124],"averaging":[115],"subfootprint":[117],"sigma0over":[119],"(5":[122],"km":[123],"5":[125],"km)":[126],"each":[128],"bins.":[130],"effect":[132],"unbiased":[135],"PIA,":[136],"with":[138],"sigma0,":[142],"rain":[145,158],"rate":[146,159],"estimate":[147],"examined.":[149],"result":[151],"shows":[152],"about":[153],"10%":[154],"increase":[155]},"counts_by_year":[],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}