Software Tools

This page provides links to several self-contained, downloadable software products and tools that have been developed by GISS personnel, either for specific research purposes or for more general analytic use.

Climate Modeling

GISS GCM - Model E

FORTRAN 90 source and documentation for the GISS ModelE series of coupled atmosphere-ocean models. These models have been used for our contribution to the CMIP3 and CMIP5 archives of model simulation results.
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FORTRAN source and documentation for the 1980s version of the GISS global climate model, used in the original NASA GISS global warming simulations described in Hansen et al. 1988. The code is maintained and distributed by the Columbia University EdGCM project.
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Astrobiology & Exoplanets

ROCKE-3D GCM Spectral Binning

FORTRAN source code and Python scripts to take a stellar radiance or irradiance spectrum and format it for use in the ROCKE-3D GCM.
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Planetary Science


Cross-platform desktop application that calculates the solar and mean time for any location on the planet Mars, presenting the data as digital readouts and in "sunclock" format.
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Data Visualization


Cross-platform desktop application for plotting geo-gridded and other data encoded in the netCDF, HDF and GRIB formats.
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Cross-platform desktop application for easy exploration of over 100 map projections, including transformation of input equirectangular map images.
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T-Matrix Codes

FORTRAN source code for computing electromagnetic scattering by nonspherical and aggregated particles.
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Bidirectional Reflection Codes

FORTRAN source code for computing bidirectional reflection function for a semi-infinite homogeneous slab composed of arbitrarily shaped, randomly oriented particles.
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FORTRAN source for quantum mechanical solution of nonreactive molecular scattering, useful in astrophysical studies.
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