Modular Ocean Model


Modular Ocean Model

The Modular Ocean Model (MOM) is a three-dimensional ocean circulation model designed primarily for studying the ocean climate system. The model is developed and supported primarily by researchers at the National Oceanic and Atmospheric Administration's Geophysical Fluid Dynamics Laboratory (GFDL).

Overview

The MOM model series owes its genesis to work at GFDL in the late 1960s by Kirk Bryan and Mike Cox. This code, along with a version generated at GFDL by Bert Semtner is the ancestor of many of the level-coordinate ocean model codes run around the world today. In the late 1980s, Ron Pacanowski, Keith Dixon, and Tony Rosati at GFDL rewrote the code in a modular form, enabling different options and configurations to be more easily generated and new physical parameterizations to be more easily included. This version became known as Modular Ocean Model v1.0 (MOM1). Subsequent development of the code by Pacanowski, Stephen Griffies and Matt Harrison at GFDL with considerable input from a scientific community of hundreds of users has resulted in significant evolution of the code up to the current version, designated MOM4. The development effort is currently headed by Stephen Griffies.

MOM has traditionally been a level-coordinate ocean model, in which the ocean is divided into boxes whose bottoms are located at fixed depths. Such a representation makes it easy to solve the momentum equations and the well-mixed, weakly stratified layer known as the ocean mixed layer near the ocean surface. However, level coordinate models have problems when it comes to the representation of thin bottom boundary layers (Winton et al., 1998) and thick sea ice. Additionally, because mixing in the ocean interior is largely along lines of constant potential density rather than along lines of constant depth, mixing must be rotated relative to the coordinate grid- a process that can be computationally expensive. By contrast, in codes which represent the ocean in terms of constant-density layers (which represent the flow in the ocean interior much more faithfully)- representation of the ocean mixed layer becomes a challenge.

MOM4 is used as a code base for the ocean component of the GFDL coupled models used in the IPCC assessment reports, including the GFDL CM2.X model series. Earlier versions have been used in hundreds of scientific papers by authors around the world. MOM3 is used as the basis for the El Nino prediction system employed by the National Centers for Environmental Prediction.

See also

* Geophysical Fluid Dynamics Laboratory

External links

* http://www.gfdl.noaa.gov/~lat/webpages/om/om_webpage.html
* http://www.gfdl.noaa.gov/~smg/pointers/geo_physics_abstracts/guide.pdf For a detailed guide to the codes and parameterizations of subgridscale processes.


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Modular ocean model — The modular ocean model (MOM) is a three dimensional ocean circulation model designed primarily for studying the ocean climate system. The model is developed and supported primarily by researchers at the National Oceanic and Atmospheric… …   Wikipedia

  • Princeton Ocean Model — The Princeton Ocean Model (POM) is a community general circulation numerical (computer) ocean model that can be used to simulate and predict oceanic currents, temperatures, salinities and other water properties. The code was originally developed… …   Wikipedia

  • Ocean reanalysis — is an method of combining historical ocean observations with a general ocean model (typically a computational model) driven by historical estimates of surface winds, heat, and freshwater, by way of a data assimilation algorithm to reconstruct… …   Wikipedia

  • Global climate model — AGCM redirects here. For Italian competition regulator, see Autorità Garante della Concorrenza e del Mercato. Climate models are systems of differential equations based on the basic laws of physics, fluid motion, and chemistry. To “run” a model,… …   Wikipedia

  • Climate model — This article is about the theories and mathematics of climate modeling. For computer driven prediction of Earth s climate, see Global climate model. Climate models are systems of differential equations based on the basic laws of physics, fluid… …   Wikipedia

  • Atmospheric model — A 96 hour forecast of 850 mbar geopotential height and temperature from the Global Forecast System An atmospheric model is a mathematical model constructed around the full set of primitive dynamical equations which govern atmospheric motions. It… …   Wikipedia

  • GFDL CM2.X — (Geophysical Fluid Dynamics Laboratory Coupled Model, version 2.X) is a coupled atmosphere ocean general circulation model (AOGCM) developed at the NOAA Geophysical Fluid Dynamics Laboratory in the United States. It is one of the leading climate… …   Wikipedia

  • Modelling biological systems — Modeling biological systems is a significant task of systems biology and mathematical biology. Computational systems biology aims to develop and use efficient algorithms, data structures, visualization and communication tools with the goal of… …   Wikipedia

  • Kirk Bryan (oceanographer) — Kirk Bryan (born 1929) is an American oceanographer who is considered to be the founder of numerical ocean modeling. Starting in the 1960s at the Geophysical Fluid Dynamics Laboratory, then located in Washington, D.C., Bryan worked with a series… …   Wikipedia

  • Simulated growth of plants — The simulated growth of plants is a significant task in of systems biology and mathematical biology, which seeks to reproduce plant morphology with computer software. Electronic trees (e trees) usually use L systems to simulate growth. L systems… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.