A Bayesian spatial assimilation scheme for snow coverage observations in a gridded snow model
نویسندگان
چکیده
منابع مشابه
A Bayesian spatial assimilation scheme for snow coverage observations in a gridded snow model
A spatial probability distribution of the variables in a parametric snow depletion curve (SDC) is tailored to the assimilation of satellite snow cover data into a gridded hydrological model. The assimilation is based on Bayes’ theorem, in which the proposed distribution represents the a priori information about the SDC variables. From the prior 5 gridded maps of snow storage and accumulated mel...
متن کاملBayesian assimilation of snow cover data
A Bayesian spatial assimilation scheme for snow coverage observations in a gridded snow model S. Kolberg, H. Rue, and L. Gottschalk SINTEF Energy Research, Sem Sælands vei 11, 7465 Trondheim, Norway Department of Mathematical Sciences, NTNU, 7491 Trondheim, Norway Department of Geosciences, University of Oslo. P.O. Box 1047 Blindern, 0316 Oslo, Norway Received: 24 June 2005 – Accepted: 6 July 2...
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[1] Snow cover has a large influence on heat fluxes between the land and atmosphere because of its high albedo and insulating thermal properties. Hence accurate snow representation in coupled land-ocean-atmosphere global climate models has the potential to greatly increase prediction accuracy. To this end, a one-dimensional extended Kalman filter analysis scheme has been developed to assimilate...
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The NASA Catchment land surface model (CLSM) is the land model component used for the Modern-Era Retrospective Analysis for Research and Applications (MERRA). Here, the CLSM versions of MERRA and MERRA-Land are evaluated using snow cover fraction (SCF) observations from the Moderate Resolution Imaging Spectroradiometer (MODIS). Moreover, a computationally-efficient empirical scheme is designed ...
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A dry snow pack is viewed as an interacting mixture of rigid ice grains and air occupying the pore space in the matrix. The three-dimensional mass, momentum and energy balances are formulated within the framework of interacting continua theory. The assumption of a common ice and air temperature is made to reflect the very slow relative motion between the air and ice. Focusing on a one-dimension...
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ژورنال
عنوان ژورنال: Hydrology and Earth System Sciences
سال: 2006
ISSN: 1607-7938
DOI: 10.5194/hess-10-369-2006