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TitleEvaluation of three evapotranspiration products over the Canadian landmass
AuthorWang, S; Pan, M; Mu, Q
SourceAmerian Geophysical Union 2013 Conference, abstracts; 2013 p. 1
LinksOnline - En ligne
Year2013
Alt SeriesEarth Sciences Sector, Contribution Series 20130192
PublisherAmerian Geophysical Union
MeetingAmerian Geophysical Union 2013 Conference; San Francisco; CA; December 9-13, 2013
Documentbook
Lang.English
Mediaon-line; digital
File formathtml
ProvinceBritish Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut
NTS1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
Subjectshydrogeology; evapotranspiration coefficient; evaporation; precipitation; hydrologic environment; hydrologic properties
ProgramAquifer Assessment & support to mapping, Groundwater Geoscience
AbstractEvapotranspiration (ET) is the water lost from the Earth¿s surfaces to the atmosphere. Subtracting ET from precipitation results in the available water to a hydrologic system for recharge to subsurface aquifers and to stream flows. ET is a strong indicator of water availability in response to changes in climate and land use. Thus, the characterization of the spatial and seasonal variations of ET is critical to sustainable management of water resources. Remote sensing has been playing an important role in mapping large scale ET and providing useful information to fill our knowledge gaps. This study compares three mainstream ET products obtained from the EALCO, MODIS, and VIC models over the Canadian landmass. The three ET products generally showed good agreement over the southern part of the landmass, but the differences over the northern part (i.e., the arctic, taiga, and cordillera regions) were found substantial. The impact of the uncertainties in the ET data on assessing the regional water budget is discussed.
Summary(Plain Language Summary, not published)
Evapotranspiration (ET) is the water lost from the Earth¿s surfaces to the atmosphere. It determines the available water for groundwater recharge and stream flows. ET is a strong indicator of water availability in response to changes in climate and land use. Thus, the characterization of the spatial and seasonal variations of ET is critical to sustainable management of water resources. Remote sensing has been playing an important role in mapping large scale ET and providing useful information to fill our knowledge gaps. This study compares three mainstream ET products obtained from the EALCO, MODIS, and VIC models over the Canadian landmass. The three ET products generally showed good agreement over the southern part of the landmass, but the differences over the northern part (i.e., the arctic, taiga, and cordillera regions) were found substantial. The impact of the uncertainties in the ET data on assessing the regional water budget is discussed.
GEOSCAN ID292928