Articles | Volume 22, issue 11
Research article
05 Nov 2018
Research article |  | 05 Nov 2018

Assimilation of passive microwave AMSR-2 satellite observations in a snowpack evolution model over northeastern Canada

Fanny Larue, Alain Royer, Danielle De Sève, Alexandre Roy, and Emmanuel Cosme

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Cited articles

Andreadis, K. M. and Lettenmaier, D. P.: Implications of representing snowpack stratigraphy for the assimilation of passive microwave satellite observations, J. Hydrometeorology, 13, 1493–1506,, 2012. 
Arakawa, A.: Adjustment mechanisms in atmospheric motions, J. Meteor. Soc. Japan, Special issue of collected papers, 75, 155–179, 1997. 
Arulampalam, M. S., Maskell, S., Gordon, N., and Clapp, T.: A tutorial on particle filters for online nonlinear/non-Gaussian Bayesian tracking, IEEE T. Signal Proces., 50, 174–188, 2002. 
Brankart, J.-M., E. Cosme, C.-E. Testut, P. Brasseur, and J. Verron: Efficient Adaptive Error Parameterizations for Square Root or Ensemble Kalman Filters: Application to the Control of Ocean Mesoscale Signals, Mon. Weather Rev., 138, 932–950, 2010. 
Brown, R. and Tapsoba, D.: Improved mapping of snow water equivalent over Quebec, 64th Eastern Snow Conference, St. John's, Newfoundland, Canada, 2007. 
Short summary
A data assimilation scheme was developed to improve snow water equivalent (SWE) simulations by updating meteorological forcings and snowpack states using passive microwave satellite observations. A chain of models was first calibrated to simulate satellite observations over northeastern Canada. The assimilation was then validated over 12 stations where daily SWE measurements were acquired during 4 winters (2012–2016). The overall SWE bias is reduced by 68 % compared to original SWE simulations.