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GFDL Model Code – Public Releases

Current GFDL Models

Models that include the GFDL Flexible Modeling System (FMS) framework and component models:

Model Description Components
SPEAR SPEAR was developed as a next generation GFDL modeling system for seasonal to multidecadal prediction and projection. FV3, MOM6, LM4
CM4 Multipurpose atmosphere-ocean coupled climate model utilizing latest atmosphere and land models FV3, MOM6, LM4, AM4, SIS2
ESM4 Earth Systems model based on an atmospheric circulation model coupled with an oceanic circulation model, with representations of land, sea ice and iceberg dynamics FV3, MOM6/with COBALT, LM4
HiRAM GFDL global HIgh Resolution Atmospheric Model  was developed with a goal of providing an improved representation of significant weather events in a global climate model. It contains a subset of AM3 parametrization. FV3 with non-hydro option, LM3
Doubly Periodic HiRam
The Doubly Periodic HiRam is an idealized model for testing atmosphere physics. Uses the single tile version of the cubed sphere dynamical core. FV3 with non-hydro option, LM3
SHiELD (fvGFS) Unified weather modeling system, system for high-resolution prediction on earth-to-local domains Non-hydro FV3
AM4/LM4 Atmospheric and land component models for coupled models such as CM4, developed from AM3 and HiRAM
The latest iteration of the MOM canonical large-scale ocean climate model used at GFDL and around the world.

Past/External Releases

The following models were developed at GFDL, however the development and support have been moved to an external community. Some models in the list are considered frozen, which indicates no active development and no support.  GFDL continues to supply links to these models for historic purposes. GFDL cannot offer support for these models.

CM3/AM3  Global coupled climate model utilizing improved atmosphere modeling and FV3 cubed-sphere FV3, LM3, MOM5
CM2.5/FLOR   FV3, MOM5, LM3
ESM2M and ESM2G GFDL Earth System Model coupling LM2 land with carbon and lat-lon dynamical core with the ocean models MOM5 and GOLD, respectively. The code was released as part of the MOM5 and GOLD projects. Note: Instructions for GOLD are in the GOLD/README_setup file in the tar archive. ESM2M: AM2 MOM5 COBALT LM2
CM2.1 CM2.1 was released as part of the MOM5 project. Coupling LM2 land and lat-lon dynamical core with MOM5 ocean. The code was released as part of the MOM5 project. FV, MOM4, LM2
MOM5 MOM is a numerical ocean model based on the hydrostatic primitive equations. MOM5 contains a marine ecosystem model known as COBALT.  MOM5 is now supported as part of the MOM5 project.
GOLD GOLD is a generalized Lagrangian-coordinate ocean model. The principal use of GOLD has been as an isopycnal coordinate ocean climate model.  The GOLD model is now frozen.