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General Information about 4x3 Atmosphere-Ocean Model

The Atmosphere-Ocean Model is a computer program that simulates the Earth's climate in three dimensions on a gridded domain. The Model requires two kinds of input, specified parameters and prognostic variables, and generates two kinds of output, climate diagnostics and prognostic variables. The specified input parameters include physical constants, the Earth's orbital parameters, the Earth's atmospheric constituents, the Earth's topography, the Earth's surface distribution of ocean, glacial ice, or vegetation, and many others. The time varying prognostic variables include fluid mass, horizontal velocity, heat, water vapor, salt, and subsurface mass and energy fields. Each simulated month, the Model produces an output "D" file that contain numerous unscaled climate diagnostics. Subsequent programs read these D files and produce scaled climate variables.


The following files contain general information about the NASA/GISS 4x3 Atmosphere-Ocean Model:

RDV4X3 Land Distribution and River Directions for 4x3 Model
SIMULA4X3.TXT Description of the six 4x3 Atmosphere-Ocean Model simulations used by this web site
HISTORY.TXT History of Atmosphere-Ocean Model development at GISS
DATAFILE.TXT Information about "DataFiles", which are binary files used for Model input, scaled Model output, and observations
LINEPLOT.TXT Information and definition of ASCII "LinePlotFiles"
DOWNLOAD.TXT Techniques for downloading individual files from the web
PCvsUNIX.TXT Differences between PC ASCII files and UNIX ASCII files

Page Links to 4x3 Atmophere-Ocean Model
COLOR PLOTS STATISTICS MODEL DOC MODEL DATA SUNLIGHT PUBLICA
LINE PLOTS GEN INFO MODEL CODE OBSERVE DATA TIDES and MOON PEOPLE
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Curator: Gary L. Russell . . . . . 2005/02/10/14:12:51