A Framework for Estimating Global River Discharge From the Surface Water and Ocean Topography Satellite Mission

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dc.contributor.authorDurand, Michaelen
dc.contributor.authorGleason, Colin J.en
dc.contributor.authorPavelsky, Tamlin M.en
dc.contributor.authorFrasson, Renato Prata de Moraes D. M.en
dc.contributor.authorTurmon, Michaelen
dc.contributor.authorDavid, Cedric H.en
dc.contributor.authorAltenau, Elizabeth H.en
dc.contributor.authorTebaldi, Nikkien
dc.contributor.authorLarnier, Kevinen
dc.contributor.authorMonnier, Jeromeen
dc.contributor.authorMalaterre, Pierre Olivieren
dc.contributor.authorOubanas, Hinden
dc.contributor.authorAllen, George H.en
dc.contributor.authorAstifan, Brianen
dc.contributor.authorBrinkerhoff, Craigen
dc.contributor.authorBates, Paul D.en
dc.contributor.authorBjerklie, Daviden
dc.contributor.authorCoss, Stephenen
dc.contributor.authorDudley, Roberten
dc.contributor.authorFenoglio, Lucianaen
dc.contributor.authorGarambois, Pierre-Andreen
dc.contributor.authorGetirana, Augustoen
dc.contributor.authorLin, Peirongen
dc.contributor.authorMargulis, Steven A.en
dc.contributor.authorMatte, Pascalen
dc.contributor.authorMinear, J. Tobyen
dc.contributor.authorMuhebwa, Aggreyen
dc.contributor.authorPan, Mingen
dc.contributor.authorPeters, Danielen
dc.contributor.authorRiggs, Ryanen
dc.contributor.authorSikder, Md Safaten
dc.contributor.authorSimmons, Travisen
dc.contributor.authorStuurman, Cassieen
dc.contributor.authorTaneja, Jayen
dc.contributor.authorTarpanelli, Angelicaen
dc.contributor.authorSchulze, Kerstinen
dc.contributor.authorTourian, Mohammad J.en
dc.contributor.authorWang, Jidaen
dc.date.accessioned2024-02-12T19:58:32Zen
dc.date.available2024-02-12T19:58:32Zen
dc.date.issued2023-04-06en
dc.description.abstractThe Surface Water and Ocean Topography (SWOT) mission will vastly expand measurements of global rivers, providing critical new data sets for both gaged and ungaged basins. SWOT discharge products (available approximately 1 year after launch) will provide discharge for all river that reaches wider than 100 m. In this paper, we describe how SWOT discharge produced and archived by the US and French space agencies will be computed from measurements of river water surface elevation, width, and slope and ancillary data, along with expected discharge accuracy. We present for the first time a complete estimate of the SWOT discharge uncertainty budget, with separate terms for random (standard error) and systematic (bias) uncertainty components in river discharge time series. We expect that discharge uncertainty will be less than 30% for two-thirds of global reaches and will be dominated by bias. Separate river discharge estimates will combine both SWOT and in situ data; these “gage-constrained” discharge estimates can be expected to have lower systematic uncertainty. Temporal variations in river discharge time series will be dominated by random error and are expected to be estimated within 15% for nearly all reaches, allowing accurate inference of event flow dynamics globally, including in ungaged basins. We believe this level of accuracy lays the groundwork for SWOT to enable breakthroughs in global hydrologic science.en
dc.description.versionPublished versionen
dc.format.extent31 page(s)en
dc.format.mimetypeapplication/pdfen
dc.identifierARTN e2021WR031614 (Article number)en
dc.identifier.doihttps://doi.org/10.1029/2021WR031614en
dc.identifier.eissn1944-7973en
dc.identifier.issn0043-1397en
dc.identifier.issue4en
dc.identifier.orcidAllen, George [0000-0001-8301-5301]en
dc.identifier.urihttps://hdl.handle.net/10919/117953en
dc.identifier.volume59en
dc.language.isoenen
dc.publisherAmerican Geophysical Unionen
dc.rightsCreative Commons Attribution-NonCommercial 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/en
dc.subjectdischargeen
dc.subjecthydrologyen
dc.subjectinverse problemen
dc.subjectremote sensingen
dc.titleA Framework for Estimating Global River Discharge From the Surface Water and Ocean Topography Satellite Missionen
dc.title.serialWater Resources Researchen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.otherArticleen
dc.type.otherJournalen
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/Scienceen
pubs.organisational-group/Virginia Tech/Science/Geosciencesen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Science/COS T&R Facultyen

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