Model agnostic, vetted, collection of codes containing atmospheric physical parameterizations and suites for use in NWP along with a framework that connects the physics to host models
The infrastructure that connects physics schemes with a host model; also refers to a software repository of the same name
The pool of CCPP-compliant physics schemes; also refers to a software repository of the same name
- “Fast” physics¶
Physical parameterizations that require tighter coupling with the dynamical core than “slow” physics (due to the approximated processes within the parameterization acting on a shorter timescale) and that benefit from a smaller time step. The distinction is useful for greater accuracy, numerical stability, or both. In the UFS Atmosphere, a saturation adjustment is used in some suites and is called directly from the dynamical core for tighter coupling
A set of physics schemes within a suite definition file (SDF) that are called together without intervening computations from the host application
- Group cap¶
Autogenerated interface between a group of physics schemes and the host model.
- Host model/application¶
An atmospheric model that allocates memory, provides metadata for the variables passed into and out of the physics, and controls time-stepping
- Interstitial scheme¶
A modularized piece of code to perform data preparation, diagnostics, or other “glue” functions that allows primary schemes to work together as a suite. They can be categorized as “scheme-specific” or “suite-level”. Scheme-specific interstitial schemes augment a specific primary scheme (to provide additional functionality). Suite-level interstitial schemes provide additional functionality on top of a class of primary schemes, connect two or more schemes together, or provide code for conversions, initializing sums, or applying tendencies, for example.
- Multi-suite CCPP build¶
A CCPP build property in which a set of physics suites is specified at compile time from which one can be chosen at runtime.
The NOAA Environmental Modeling System - a software infrastructure that supports NCEP/EMC’s forecast products. The coupling software is based on ESMF and the NUOPC layer.
The National Unified Operational Prediction Capability is a consortium of Navy, NOAA, and Air Force modelers and their research partners. It aims to advance the weather modeling systems used by meteorologists, mission planners, and decision makers. NUOPC partners are working toward a common model architecture - a standard way of building models - in order to make it easier to collaboratively build modeling systems.
The representation, in a dynamic model, of physical effects in terms of admittedly oversimplified parameters, rather than realistically requiring such effects to be consequences of the dynamics of the system (AMS Glossary)
- Physics cap¶
Generic name to refer to suite and group physics caps.
- Physics Suite cap¶
Autogenerated interface between an entire suite of physics schemes and the host model. It consists of calls to autogenerated physics group caps. It may be used to call an entire suite at once or to call a specific group within a physics suite
- Primary scheme¶
A parameterization, such as PBL, microphysics, convection, and radiation, that fits the traditionally-accepted definition, as opposed to an interstitial scheme
Compiler flags used by NCEP for operational runs of the UFS Atmosphere and by EMC for regression tests of the code
Compiler flags used by EMC to guarantee reproducibility of the UFS Atmosphere code
A CCPP-compliant parameterization (primary scheme) or auxiliary code (interstitial scheme)
Suite Definition File (SDF) is an external file containing information about the construction of a physics suite. It describes the schemes that are called, in which order they are called, whether they are subcycled, and whether they are assembled into groups to be called together
A collection of physics schemes that do not share memory (e.g. fast and slow physics)
- “Slow” physics¶
Physical parameterizations that can tolerate looser coupling with the dynamical core than “fast” physics (due to the approximated processes within the parameterization acting on a longer timescale) and that often use a longer time step. Such parameterizations are typically grouped and calculated together (through a combination of process- and time-splitting) in a section of an atmospheric model that is distinct from the dynamical core in the code organization
Variable names based on CF conventions (http://cfconventions.org) that are uniquely identified by the CCPP-compliant schemes and provided by a host model
Executing a physics scheme more frequently (with a shorter timestep) than the rest of the model physics or dynamics
A collection of primary physics schemes and interstitial schemes that are known to work well together
A Unified Forecast System (UFS) is a community-based, coupled comprehensive Earth system modeling system. The UFS numerical applications span local to global domains and predictive time scales from sub-hourly analyses to seasonal predictions. It is designed to support the Weather Enterprise and to be the source system for NOAA’s operational numerical weather prediction applications
- UFS Atmosphere¶
The atmospheric model component of the UFS. Its fundamental parts are the dynamical core and the physics
- UFS Weather Model¶
Global meduim-range, weather-prediction model previously known as NEMSfv3gfs or FV3GFS used to create forecasts.
Virtual Laboratory - a service and information technology framework, that enables NOAA employees and their partners to share ideas, collaborate, engage in software development, and conduct applied research (https://www.nws.noaa.gov/mdl/vlab/)
- .xsd file extension¶
XML schema definition