||A type of continuation run of the CAM. A
branch run starts a new case using the restart files from a previous model
run. This is used primarily when you wish to exactly reproduce a control
simulation, but change the output fields.
||Community Atmosphere Model; the latest
atmosphere model code which can be run as part of the CCSM or as
a stand-alone atmosphere model for climate prediction.
||A term used to denote a model experiment,
including one initial run and as many continuation runs as required to
conclude the experiment. A model case is cataloged using the CASEID
namelist variable. By default the caseid is included in
the output filenames and mass store archive path.
||"C" language compiler.
||Community Climate Model; the predecessor
model code of CAM used in making climate predictions.
||Community Climate System Model. The set of
geophysical models for atmosphere, land, ocean, and sea-ice to model
the climate system. CAM is the atmosphere model component for the CCSM.
||A type of run that uses a restart file from
a previous run to initialize the data fields (no initial dataset is read).
Restart and branch runs are each possible types of a continuation run.
||CCSM Software Engineering Group. The
group of software developers at NCAR responsible for maintaining and
developing the CCSM codes.
||The Community Land Model a land surface model.
||Central Processing Unit.
||Community Sea-Ice Model.
||Multi-processing on multiple CPU's using
the SPMD programming model.
||Data Ocean Model. Ocean component of stand-alone
CAM that reads in SST information from an input dataset.
||European Center for Medium Range Weather
||Earth System Modeling Framework
||The Finite-Volume (also referred to as Lin-Rood) dynamical core.
||A simulation with the atmosphere model
where the model is linked to a system of geo-physical models (land, ocean,
and sea-ice). When run in this manner each seperate component is built
as a seperate executable, and each component communicates with each
other in Multiple Program - Multiple Data (MPMD) mode. See also CCSM.
||GNU's not UNIX. A set of Open-Source freely
provided utilities for UNIX.
||GNU decompression utility similar to UNIX
uncompress. Takes a file and inflates it to it's full size so that it can
be used. Files are compressed to save disk space and save on network file
||A file containing CPP tokens to set the
particular model resolution and configuration named with a ".h"
suffix (e.g. misc.h).
||Memory that is dynamically allocated by the
system. Unlike stack memory, heap memory can be allocated or de-allocated
at any point during program execution.
||The output NetCDF dataset that the model produces
to record the model simulation field values with time.
||A startup simulation using a
||The NCAR Land Surface Model. This model was
used with the CCM the predecessor to CAM.
||A FORTRAN-90 construct containing data and
subroutines and functions that operate on that data. This is a somewhat object-oriented
approach to datastructures. The data can be specified
as private to the module or public for access by other subroutines.
Outside subroutines can specify the limited set of variables they wish
to capture. This ability provides a better approach to handling data and
is the preferred method for dealing with data over COMMON blocks.
||Message Passing Interface. A standardized
library for distributed memory parallel processing.
||Multiple Program Multiple Data. Parallel
programming model with several distinct executable programs operating on
different sets of data.
||FORTRAN-90 compiler for IBM AIX with
message passing (MPI) libraries included.
||Thread-safe FORTRAN-90 compiler for IBM AIX with
message passing (MPI) libraries included, and allowing for Open-MP threading.
||The NCAR Mass Store System.
||A program configured to execute on several
distributed processors simultaneously. See distributed memory.
||National Center for Atmospheric Research
||Network Common Data Format. Self describing,
platform independent binary data format (created by UNIDATA).
||Open specification for
Multi-Processing. Set of compiler directives for shared-memory
parallel processing, that is supported by most compiler venders.
||Planetary Boundary Layer.
||Number of advected constituents carried in
||Portland Group's FORTRAN-90 compiler,
||Number of Gaussian latitudes on the transform
||Number of vertical model levels.
||Number of longitudes on the transform grid
||A type of continuation run of the CAM. A
restart run continues a previous run from its point of termination, by
reading most recent restart
||Parallel-processing term. Refers to the
parts of shared memory processed code that executes on only one processor.
||Parallel-processing term. Refers to using
a machine where multiple CPU's share the same memory.
||Single Program Multiple Data.
||Memory local to a subroutine or function.
||Running the model not in flux-coupled mode as described above, but as a single-executable with land,
thermodynamic sea-ice, and data ocean models as subroutines of the main executable.
||Standard error. Output stream that error messages are sent to. Usually, this is the users terminal.
||Standard output. Default output stream that messages are sent to. Usually, this is the users terminal.
||A grid used to evaluate all nonlinear and diabatic forcing terms in physical space.
||University Atmospheric Data access project funded by the National Science Foundation (NSF).
||A modern operating system shared and supported by most