NEMS configuration generation
Project description
NEMSpy
NEMSpy generates configuration files (nems.configure, config.rc, model_configure, atm_namelist.rc)
for coupled modeling applications run with a compiled NEMS binary (not included).
pip install nemspy
NEMS implements the National Unified Operational Prediction Capability (NUOPC), and configuration files built for NEMS will also work for most NUOPC applications.
Usage
from datetime import datetime, timedelta
from pathlib import Path
from nemspy import ModelingSystem
from nemspy.model import ADCIRCEntry, AtmosphericForcingEntry, WaveWatch3ForcingEntry
# directory to which configuration files should be written
output_directory = Path(__file__).parent / 'nems_configuration'
# directory containing forcings
forcings_directory = Path(__file__).parent / 'forcings'
# model run time
start_time = datetime(2020, 6, 1)
duration = timedelta(days=1)
end_time = start_time + duration
# returning interval of main run sequence
interval = timedelta(hours=1)
# model entries
ocean_model = ADCIRCEntry(processors=11, Verbosity='max', DumpFields=False)
atmospheric_mesh = AtmosphericForcingEntry(
filename=forcings_directory / 'wind_atm_fin_ch_time_vec.nc', processors=1
)
wave_mesh = WaveWatch3ForcingEntry(
filename=forcings_directory / 'ww3.Constant.20151214_sxy_ike_date.nc', processors=1
)
# instantiate model system with model entries
nems = ModelingSystem(
start_time=start_time,
end_time=end_time,
interval=interval,
ocn=ocean_model,
atm=atmospheric_mesh,
wav=wave_mesh,
)
# form connections between models
nems.connect('ATM', 'OCN')
nems.connect('WAV', 'OCN')
# define execution order
nems.sequence = [
'ATM -> OCN',
'WAV -> OCN',
'ATM',
'WAV',
'OCN',
]
# write configuration files to the given directory
nems.write(directory=output_directory, overwrite=True, include_version=True)
Output
nems.configure
# `nems.configure` generated with NEMSpy 1.0.0
# EARTH #
EARTH_component_list: ATM WAV OCN
EARTH_attributes::
Verbosity = off
::
# ATM #
ATM_model: atmesh
ATM_petlist_bounds: 0 0
ATM_attributes::
Verbosity = off
::
# WAV #
WAV_model: ww3data
WAV_petlist_bounds: 1 1
WAV_attributes::
Verbosity = off
::
# OCN #
OCN_model: adcirc
OCN_petlist_bounds: 2 12
OCN_attributes::
Verbosity = max
DumpFields = false
::
# Run Sequence #
runSeq::
@3600
ATM -> OCN :remapMethod=redist
WAV -> OCN :remapMethod=redist
ATM
WAV
OCN
@
::
model_configure
# `model_configure` generated with NEMSpy 1.0.0
total_member: 1
print_esmf: .true.
namelist: atm_namelist.rc
PE_MEMBER01: 13
start_year: 2020
start_month: 6
start_day: 1
start_hour: 0
start_minute: 0
start_second: 0
nhours_fcst: 24
RUN_CONTINUE: .false.
ENS_SPS: .false.
config.rc
# `config.rc` generated with NEMSpy 1.0.0
atm_dir: ~/forcings
atm_nam: wind_atm_fin_ch_time_vec.nc
wav_dir: ~/forcings
wav_nam: ww3.Constant.20151214_sxy_ike_date.nc
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