GLACE: The Global Land-Atmosphere Coupling Experiment. Part II: Analysis

Guo, Zhichang; Dirmeyer, Paul A.; Koster, Randal D.; Bonan, Gordon; Chan, Edmond; Cox, Peter; Gordon, C. T.; Kanae, Shinjiro; Kowalczyk, Eva; Lawrence, David; Liu, Ping; Lu, Chen-Hsuan; Malyshev, Sergey; McAveney, Bryant; McGregory, J. L.; Mitchell, Ken; Mocko, David; Oki, Taikan; Oleson, Keith W.; Pitman, Andrew; Sud, Y. C.; Taylor, Christopher M. ORCID: https://orcid.org/0000-0002-0120-3198; Verseghy, Diana; Vasic, Ratko; Xue, Yongkang; Yamada, Tomohito. 2006 GLACE: The Global Land-Atmosphere Coupling Experiment. Part II: Analysis. Journal of Hydrometeorology, 7. 611-625.

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Abstract/Summary

The 12 weather and climate models participating in the Global Land–Atmosphere Coupling Experiment (GLACE) show both a wide variation in the strength of land–atmosphere coupling and some intriguing commonalities. In this paper, the causes of variations in coupling strength—both the geographic variations within a given model and the model-to-model differences—are addressed. The ability of soil moisture to affect precipitation is examined in two stages, namely, the ability of the soil moisture to affect evaporation, and the ability of evaporation to affect precipitation. Most of the differences between the models and within a given model are found to be associated with the first stage—an evaporation rate that varies strongly and consistently with soil moisture tends to lead to a higher coupling strength. The first-stage differences reflect identifiable differences in model parameterization and model climate. Intermodel differences in the evaporation–precipitation connection, however, also play a key role.

Item Type:	Publication - Article
Programmes:	CEH Programmes pre-2009 publications > Biogeochemistry > CC01B Land-surface Feedbacks in the Climate System
UKCEH and CEH Sections/Science Areas:	_ Process Hydrology
ISSN:	1525-755X
NORA Subject Terms:	Meteorology and Climatology Ecology and Environment Atmospheric Sciences
Date made live:	01 May 2008 10:20 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/2857

Item Type:

Publication - Article

Programmes:

CEH Programmes pre-2009 publications > Biogeochemistry > CC01B Land-surface Feedbacks in the Climate System

UKCEH and CEH Sections/Science Areas:

_ Process Hydrology

ISSN:

1525-755X

NORA Subject Terms:

Meteorology and Climatology
Ecology and Environment
Atmospheric Sciences

Date made live:

01 May 2008 10:20 +0 (UTC)