GLACE: The Global Land-Atmosphere Coupling Experiment. 1. Overview

The Global Land-Atmosphere Coupling Experiment (GLACE) is a model intercomparison study focusing on a typically neglected yet critical element of numerical weather and climate modeling: land-atmosphere coupling strength, or the degree to which anomalies in land surface state (e.g., soil moisture) can affect rainfall generation and other atmospheric processes. The 12 AGCM groups participating in GLACE performed a series of simple numerical experiments that allow the objective quantification of this element for boreal summer. The derived coupling strengths vary widely. Some similarity, however, is found in the spatial patterns generated by the models, with enough similarity to pinpoint multimodel "hot spots" of land-atmosphere coupling. For boreal summer, such hot spots for precipitation and temperature are found over large regions of Africa, central North America, and India; a hot spot for temperature is also found over eastern China. The design of the GLACE simulations are described in full detail so that any interested modeling group can repeat them easily and thereby place their model's coupling strength within the broad range of those documented here.

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Copyright 2006 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 of the U.S. Copyright Act or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC §108, as revised by P.L. 94-553) does not require the AMS's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statement, requires written permission or a license form the AMS. Additional details are provided in the AMS Copyright Policy, available on the AMS Web site located at (http://www.ametsoc.org/AMS) or from the AMS at 617-227-2425 or copyright@ametsoc.org.
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Author Koster, R.
Guo, Z.
Dirmeyer, P.
Bonan, Gordon B.
Chan, E.
Cox, P.
Davies, H.
Gordon, C.
Kanae, S.
Kowalczyk, E.
Lawrence, David M.
Liu, P.
Lu, C.
Malyshev, S.
McAvaney, B.
Mitchell, K.
Mocko, D.
Oki, T.
Oleson, Keith W.
Pitman, A.
Sud, Y.
Taylor, C.
Verseghy, D.
Vasic, R.
Xue, Y.
Yamada, T.
Publisher UCAR/NCAR - Library
Publication Date 2006-08-01T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2025-07-17T17:05:17.828584
Metadata Record Identifier edu.ucar.opensky::articles:10239
Metadata Language eng; USA
Suggested Citation Koster, R., Guo, Z., Dirmeyer, P., Bonan, Gordon B., Chan, E., Cox, P., Davies, H., Gordon, C., Kanae, S., Kowalczyk, E., Lawrence, David M., Liu, P., Lu, C., Malyshev, S., McAvaney, B., Mitchell, K., Mocko, D., Oki, T., Oleson, Keith W., Pitman, A., Sud, Y., Taylor, C., Verseghy, D., Vasic, R., Xue, Y., Yamada, T.. (2006). GLACE: The Global Land-Atmosphere Coupling Experiment. 1. Overview. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d7pv6kxc. Accessed 31 July 2025.

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