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Parameterization of Cold-season Processes In The Maps Land-surface Scheme

Abstract

A coupled atmospheric/land-surface model covering the conterminous United States with an associated 1-hour atmospheric data assimilation cycle, the Mesoscale Analysis and Prediction System (MAPS), has been improved to include a snow accumulation/melting scheme and also parameterization of processes in frozen soil. The new aspects of the land-surface model are described in this paper, along with detailed one-dimensional (1-D) tests using an 18-year observation data set from Valday, Russia, These tests show that the MAPS 1-D soil/vegetation/snow model is capable of providing accurate simulations over multiyear periods at locations with significant snow cover and frozen soil. A statistical analysis of the tests shows the expected improvement in snow depth, skin temperature, and especially in runoff from inclusion of these additional surface processes during the spring melting season. This performance in 1-D tests is a necessary prerequisite for robust long-term behavior of soil temperature and moisture fields and other components of the hydrological cycle in the 3-D MAPS coupled assimilation cycle.

Article / Publication Data
Active/Online
YES
ISSN
0747-7309
Volume
105
Available Metadata
Fiscal Year
Publication Name
Journal of Geophysical Research Atmospheres
Published On
January 01, 2000
Publisher Name
American Geophysical Union
Print Volume
105
Print Number
0

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Not available

Author

Authors who have authored or contributed to this publication.