The main GAMAP program contains a user-friendly, menu-driven interface; however, users may also call GAMAP subroutines independently of the main program. This makes it possible to embed GAMAP routines within existing IDL code.
GAMAP was developed by Martin Schultz and Bob Yantosca at Harvard University's Atmospheric Chemistry Modeling Group. At the time, they were looking for a way to visualize results from both the GISSII and GEOSChem chemical tracer models, which had different output file formats. Rather than forcing both the GISSII and GEOSChem to adhere to a common file format, Martin and Bob wrote GAMAP so that it could read and plot data from both models equally well.
This philosophy of "customizing GAMAP to fit the model" continues to drive further GAMAP development today. GAMAP's functionality has been extended to include support for the HarvardFSU model, as well as for empirical data on arbitrary Cartesian grids. GAMAP has also kept pace with the ever-changing GEOSCHEM model, and can now read GEOSChem output generated with GEOS3, and GEOS4, GEOS5 or GISS/GCAP meteorological fields. GAMAP has also been extensively modified to take advantage of IDL's facilities for reading different types of file formats, including netCDF, HDF, and HDFEOS.
The GEOSChem Support Team now continue to publish the standard GAMAP code. They are responsible for all further GAMAP development.
Here are some plots that were created with the GAMAP package. GAMAP can save to a number of file graphic formats, including GIF, JPG, Windows BMP, PNG, TIFF, and PostScript.
Smooth pixel plot of GEOSCHEM ozone concentrations
Latitude slice of of GEOSCHEM ozone concentrations
Polar plot of of GEOSCHEM ozone concentrations
Zonal mean contour plot of GEOSCHEM CO concentrations
Multi-panel map plots of GEOSCHEM tracers
4 panel difference plot
Image maps overlaid with various data
This page is maintained by Bob Yantosca (yantoscaseas.harvard.edu).