Running Doubly-Periodic Experiment
Data files for doubly periodic experiment
You will need an appropriate tile file named DPXXX.til where XXX is the resolution you are running. In addition since the OGCM_IM and OGCM_JM must be 1 you will need appropriately modified kpar.data, sst.data, and fraci.data files.
Overview
The doubly periodic capability in GEOS-5 allows one to run a simulation on an arbitrary Cartesian domain with periodicity in both dimensions.
Setup
A doubly periodic code is run through GEOSgcm.x like full the model. in the fvcore_layout.rc file the size of the domain is specified in meters like so:
dx_const: 13000 dy_const: 13000
Thus for a given IM and JM you have a domain IMxJM grid on a Cartesian domain with size dx_const by dy_const. For now the domain and grid should be square, i.e. IM = JM.
Example AGCM.rc
Below is snippets showing what needs to be changed in the AGCM.rc to perform a doubly periodic run. Note the change in the grid name that alerts the model this is a doubly periodic setup. The most critical are the FIXED_LATS and FIXED_LONS keywords which tell where the cell is located. The CASE_ID, T0, and CASE_TRACERS values should be the values in the example below unless new cases get added in the future.
# Atmospheric Model Configuration Parameters
# ------------------------------------------
NX: 12
NY: 12
AGCM_IM: 360
AGCM_JM: 360
AGCM_LM: 72
AGCM_GRIDNAME: PE360x360-DP
FIXED_LATS: 18.0
FIXED_LONS: 0.0
DYCORE: FV3
COLDSTART: 1
T0: 280.0
CASE_ID: 2
CASE_TRACERS: 1234
SOLAR_LOAD_BALANCE: 0
SOLAR_DT: 1800
IRRAD_DT: 1800
SOLARAvrg: 0
IRRADAvrg: 0
# Ocean Model Configuration Parameters
# ------------------------------------
OGCM_IM: 1
OGCM_JM: 1
OGCM_LM: 34
OGCM_GRIDNAME: PE1x1-DE
ANA_GRIDNAME: PE360x360-DP
# Required AGCM Model Restart Files
# ---------------------------------
DYN_INTERNAL_RESTART_FILE: -fvcore_internal_rst
DYN_INTERNAL_RESTART_TYPE: pbinary
DYN_INTERNAL_CHECKPOINT_FILE: fvcore_internal_checkpoint
DYN_INTERNAL_CHECKPOINT_TYPE: pbinary
DYN_INTERNAL_HEADER: 1
LAKE_INTERNAL_RESTART_FILE: -lake_internal_rst
LAKE_INTERNAL_RESTART_TYPE: binary
LAKE_INTERNAL_CHECKPOINT_FILE: lake_internal_checkpoint
LAKE_INTERNAL_CHECKPOINT_TYPE: binary
LANDICE_INTERNAL_RESTART_FILE: -landice_internal_rst
LANDICE_INTERNAL_RESTART_TYPE: binary
LANDICE_INTERNAL_CHECKPOINT_FILE: landice_internal_checkpoint
LANDICE_INTERNAL_CHECKPOINT_TYPE: binary
CATCH_INTERNAL_RESTART_FILE: -catch_internal_rst
CATCH_INTERNAL_RESTART_TYPE: binary
CATCH_INTERNAL_CHECKPOINT_FILE: catch_internal_checkpoint
CATCH_INTERNAL_CHECKPOINT_TYPE: binary
MOIST_INTERNAL_RESTART_FILE: +moist_internal_rst
MOIST_INTERNAL_RESTART_TYPE: pbinary
MOIST_INTERNAL_CHECKPOINT_FILE: moist_internal_checkpoint
MOIST_INTERNAL_CHECKPOINT_TYPE: pbinary
# Boot-Strapable AGCM Model Restart Files
# ---------------------------------------
MOIST_IMPORT_RESTART_FILE: -moist_import_rst
MOIST_IMPORT_RESTART_TYPE: pbinary
MOIST_IMPORT_CHECKPOINT_FILE: moist_import_checkpoint
MOIST_IMPORT_CHECKPOINT_TYPE: pbinary
SURFACE_IMPORT_RESTART_FILE: -surf_import_rst
SURFACE_IMPORT_RESTART_TYPE: binary
SURFACE_IMPORT_CHECKPOINT_FILE: surf_import_checkpoint
SURFACE_IMPORT_CHECKPOINT_TYPE: binary
SOLAR_INTERNAL_RESTART_FILE: -solar_internal_rst
SOLAR_INTERNAL_RESTART_TYPE: pbinary
SOLAR_INTERNAL_CHECKPOINT_FILE: solar_internal_checkpoint
SOLAR_INTERNAL_CHECKPOINT_TYPE: pbinary
IRRAD_INTERNAL_RESTART_FILE: -irrad_internal_rst
IRRAD_INTERNAL_RESTART_TYPE: pbinary
IRRAD_INTERNAL_CHECKPOINT_FILE: irrad_internal_checkpoint
IRRAD_INTERNAL_CHECKPOINT_TYPE: pbinary
TURBULENCE_INTERNAL_RESTART_FILE: -turb_internal_rst
TURBULENCE_INTERNAL_RESTART_TYPE: pbinary
TURBULENCE_INTERNAL_CHECKPOINT_FILE: turb_internal_checkpoint
TURBULENCE_INTERNAL_CHECKPOINT_TYPE: pbinary
TURBULENCE_IMPORT_RESTART_FILE: -turb_import_rst
TURBULENCE_IMPORT_RESTART_TYPE: pbinary
TURBULENCE_IMPORT_CHECKPOINT_FILE: turb_import_checkpoint
TURBULENCE_IMPORT_CHECKPOINT_TYPE: pbinary
PCHEM_INTERNAL_RESTART_FILE: -pchem_internal_rst
PCHEM_INTERNAL_RESTART_TYPE: pbinary
PCHEM_INTERNAL_CHECKPOINT_FILE: pchem_internal_checkpoint
PCHEM_INTERNAL_CHECKPOINT_TYPE: pbinary
# Chemistry/AEROSOL Model Restart Files
# -------------------------------------
GOCART_INTERNAL_RESTART_FILE: -gocart_internal_rst
GOCART_INTERNAL_RESTART_TYPE: pbinary
GOCART_INTERNAL_CHECKPOINT_FILE: gocart_internal_checkpoint
GOCART_INTERNAL_CHECKPOINT_TYPE: pbinary
#CARMA_INTERNAL_RESTART_FILE: carma_internal_rst
#CARMA_INTERNAL_RESTART_TYPE: pbinary
#CARMA_INTERNAL_CHECKPOINT_FILE: carma_internal_checkpoint
#CARMA_INTERNAL_CHECKPOINT_TYPE: pbinary
#STRATCHEM_INTERNAL_RESTART_FILE: stratchem_internal_rst
#STRATCHEM_INTERNAL_RESTART_TYPE: pbinary
#STRATCHEM_INTERNAL_CHECKPOINT_FILE: stratchem_internal_checkpoint
#STRATCHEM_INTERNAL_CHECKPOINT_TYPE: pbinary
#GMICHEM_INTERNAL_RESTART_FILE: gmichem_internal_rst
#GMICHEM_INTERNAL_RESTART_TYPE: pbinary
#GMICHEM_INTERNAL_CHECKPOINT_FILE: gmichem_internal_checkpoint
#GMICHEM_INTERNAL_CHECKPOINT_TYPE: pbinary
#MAM_INTERNAL_RESTART_FILE: mam_internal_rst
#MAM_INTERNAL_RESTART_TYPE: pbinary
#MAM_INTERNAL_CHECKPOINT_FILE: mam_internal_checkpoint
#MAM_INTERNAL_CHECKPOINT_TYPE: pbinary
# OCEAN Model Restart Files
# -------------------------
SALTWATER_INTERNAL_RESTART_FILE: +saltwater_internal_rst
SALTWATER_INTERNAL_RESTART_TYPE: pbinary
SALTWATER_INTERNAL_CHECKPOINT_FILE: saltwater_internal_checkpoint
SALTWATER_INTERNAL_CHECKPOINT_TYPE: pbinary
SALTWATER_IMPORT_RESTART_FILE: -saltwater_import_rst
SALTWATER_IMPORT_RESTART_TYPE: pbinary
SALTWATER_IMPORT_CHECKPOINT_FILE: saltwater_import_checkpoint
SALTWATER_IMPORT_CHECKPOINT_TYPE: pbinary
Other files
In addition you will need an appropriate tile file name DPXXX.til where XXX is the resolution as well as appropriate fraci.data, kpar.data, and sst.data files