Parameterization of sub-grid scale processes in climate models

A. J. Pitman*

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

    Abstract

    Three methods of increasing sub-grid scale heterogeneity in the representation of the land surface in AGCMs are described: a method of spatial aggregation of parameter data to AGCM resolution which retains the original variability in the data in subsequent climate simulations; a parameterization of sub-grid scale precipitation, interception and runoff; and an attempt at a model of sub-grid scale lakes for climate models. The relative sensitivity of the land surface to these modifications is discussed. It is shown that the aggregation of data is likely to improve simulations while incorporating the precipitation or lake parameterizations will improve the level of realism in the land surface models, but may not improve the climate simulations.

    Original languageEnglish
    Title of host publicationHydrological Interactions Between Atmosphere, Soil and Vegetation
    PublisherPubl by IAHS
    Pages65-74
    Number of pages10
    Edition204
    ISBN (Print)0947571132
    Publication statusPublished - 1991
    Event20th General Assembly of the International Union of Geodesy and Geophysics - Vienna, Austria
    Duration: 11 Aug 199124 Aug 1991

    Other

    Other20th General Assembly of the International Union of Geodesy and Geophysics
    CityVienna, Austria
    Period11/08/9124/08/91

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