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Earth Sciences Sector. Assessment of reanalysis forcings for use within Canada-wide water budgets. An Activity within the ESS Climate Change Programme. Vladimir.Korolevich @nrcan.gc.ca Richard Fernandes, Shusen Wang, Anita Simic, Fanfei Gong, Peter Zelic (Canada Centre for Remote Sensing). - PowerPoint PPT Presentation
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Reducing Canada's vulnerability to climate change - ESS
Assessment of reanalysis forcings for use within Canada-wide water budgets
Vladimir.Korolevich @nrcan.gc.caRichard Fernandes, Shusen Wang,
Anita Simic, Fanfei Gong, Peter Zelic
(Canada Centre for Remote Sensing)
An Activity within the ESS Climate Change Programme
Earth Sciences Sector
Reducing Canada's vulnerability to climate change - ESS
Research Question
• How do model reanalysis forcings compare to in-situ point observations?
• How does ET derived from hydrological model differ based on reanalysis versus observed forcing fields?
• For a given forcing dataset, what is the partial contribution of uncertainties for each climate variable to uncertainties in modelled ET?
Reducing Canada's vulnerability to climate change - ESS
ET Estimation
• Approach: Apply climate forcings to validated point model (EALCO) for each 1km grid cell.
• Requirements:– Satellite Earth Observation data for surface
parameters.– Point estimates of ET for calibration and
validation.– ~30km resolution, hourly forcing fields for Canada:
• Precipitation (rain and snow), 2m air temperature, 2m wind speed, 2m specific humidity, surface down welling shortwave and longwave radiation, 2m air pressure
Reducing Canada's vulnerability to climate change - ESS
Observed Station Climate Data 1960-1990: Hourly Rain, Snow, Insolation,
Air Temp, Specific Humidity, Surface Pressure
Mean Annual Precipitation (1961-1990) at
Canadian Weather .. (CWEEDS) stations