Global Ocean Prediction Using HYCOM
One important aspect of ocean model design is the choice of the vertical coordinate system. Traditional ocean models use a single coordinate type to represent the vertical, but model comparison exercises performed in Europe (DYnamics of North Atlantic MOdels (DYNAMO)) and in the United States (Data...
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ftdtic:ADA470731 2023-05-15T17:37:15+02:00 Global Ocean Prediction Using HYCOM Metzger, E. J. Hurlburt, Harley E. Wallcraft, Alan J. Cummings, James A. Chassignet, Eric P. Smedstad, Ole M. NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV 2006-06 text/html http://www.dtic.mil/docs/citations/ADA470731 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA470731 en eng http://www.dtic.mil/docs/citations/ADA470731 Approved for public release; distribution is unlimited. DTIC Meteorology Physical and Dynamic Oceanography Computer Programming and Software *OCEAN CURRENTS *FORECASTING *COORDINATES *VERTICAL ORIENTATION *HYBRID SYSTEMS *OCEAN MODELS *MARINE CLIMATOLOGY VELOCITY COMPUTERIZED SIMULATION DATA PROCESSING EDDIES(FLUID MECHANICS) SATELLITE METEOROLOGY DEEP WATER SURFACE TEMPERATURE SALINITY MIXED LAYER(MARINE) SHALLOW WATER BATHYMETRY MARINE ATMOSPHERES PREDICTIONS GLOBAL SYMPOSIA COASTAL REGIONS *GLOBAL OCEAN PREDICTION VERTICAL COORDINATES NOWCASTING ECMWF(EUROPEAN CENTER FOR MEDIUM-RANGE WEATHER FORECASTS) SSH(SEA SURFACE HEIGHT) WIND FORCING THERMAL FORCING STRATIFIED OCEAN MIXED OCEAN SHALLOW OCEAN PE0601153N WU738677065 Text 2006 ftdtic 2016-02-22T10:58:10Z One important aspect of ocean model design is the choice of the vertical coordinate system. Traditional ocean models use a single coordinate type to represent the vertical, but model comparison exercises performed in Europe (DYnamics of North Atlantic MOdels (DYNAMO)) and in the United States (Data Assimilation and Model Evaluation Experiment (DAMEE)) have shown that none of the three main vertical coordinates presently in use (depth [z-levels], density [isopycnal layers], or terrain-following [sigma-levels]) can by itself be optimal everywhere in the ocean. The HYbrid Coordinate Ocean Model (HYCOM) (Bleck, 2002) is configured to combine all three of these vertical coordinate types. It is isopycnal in the open, stratified ocean, but uses the layered continuity equation to make a dynamically smooth transition to a terrain-following coordinate in shallow coastal regions, and to z-level coordinates in the mixed layer and/or unstratified seas. The hybrid coordinate extends the geographic range of applicability of traditional isopycnic coordinate circulation models toward shallow coastal seas and unstratified parts of the world ocean. It maintains the significant advantages of an isopycnal model in stratified regions while allowing more vertical resolution near the surface and in shallow coastal areas, hence providing a better representation of the upper ocean physics. HYCOM is designed to provide a major advance over the existing operational global ocean prediction systems, since it overcomes design limitations of the present systems as well as limitations in vertical and horizontal resolution. The result should be a more streamlined system with improved performance and an extended range of applicability (e.g., the present systems are seriously limited in shallow water and in handling the transition from deep to shallow water). Presented at the High Performance Computing Modernization Program (HPCMP) Users Group Conference held in Denver, CO, on 26-29 Jun 2006. Pub. in the Proceedings of the High Performance Computing Modernization Program (HPCMP) Users Group Conference, p271-274, 2006. Prepared in cooperation with The Center for Ocean-Atmospheric Prediction Studies, Florida State University, Tallahassee, FL, and Planning Systems, Inc., Slidell, LA. Text North Atlantic Defense Technical Information Center: DTIC Technical Reports database |
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Defense Technical Information Center: DTIC Technical Reports database |
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English |
topic |
Meteorology Physical and Dynamic Oceanography Computer Programming and Software *OCEAN CURRENTS *FORECASTING *COORDINATES *VERTICAL ORIENTATION *HYBRID SYSTEMS *OCEAN MODELS *MARINE CLIMATOLOGY VELOCITY COMPUTERIZED SIMULATION DATA PROCESSING EDDIES(FLUID MECHANICS) SATELLITE METEOROLOGY DEEP WATER SURFACE TEMPERATURE SALINITY MIXED LAYER(MARINE) SHALLOW WATER BATHYMETRY MARINE ATMOSPHERES PREDICTIONS GLOBAL SYMPOSIA COASTAL REGIONS *GLOBAL OCEAN PREDICTION VERTICAL COORDINATES NOWCASTING ECMWF(EUROPEAN CENTER FOR MEDIUM-RANGE WEATHER FORECASTS) SSH(SEA SURFACE HEIGHT) WIND FORCING THERMAL FORCING STRATIFIED OCEAN MIXED OCEAN SHALLOW OCEAN PE0601153N WU738677065 |
spellingShingle |
Meteorology Physical and Dynamic Oceanography Computer Programming and Software *OCEAN CURRENTS *FORECASTING *COORDINATES *VERTICAL ORIENTATION *HYBRID SYSTEMS *OCEAN MODELS *MARINE CLIMATOLOGY VELOCITY COMPUTERIZED SIMULATION DATA PROCESSING EDDIES(FLUID MECHANICS) SATELLITE METEOROLOGY DEEP WATER SURFACE TEMPERATURE SALINITY MIXED LAYER(MARINE) SHALLOW WATER BATHYMETRY MARINE ATMOSPHERES PREDICTIONS GLOBAL SYMPOSIA COASTAL REGIONS *GLOBAL OCEAN PREDICTION VERTICAL COORDINATES NOWCASTING ECMWF(EUROPEAN CENTER FOR MEDIUM-RANGE WEATHER FORECASTS) SSH(SEA SURFACE HEIGHT) WIND FORCING THERMAL FORCING STRATIFIED OCEAN MIXED OCEAN SHALLOW OCEAN PE0601153N WU738677065 Metzger, E. J. Hurlburt, Harley E. Wallcraft, Alan J. Cummings, James A. Chassignet, Eric P. Smedstad, Ole M. Global Ocean Prediction Using HYCOM |
topic_facet |
Meteorology Physical and Dynamic Oceanography Computer Programming and Software *OCEAN CURRENTS *FORECASTING *COORDINATES *VERTICAL ORIENTATION *HYBRID SYSTEMS *OCEAN MODELS *MARINE CLIMATOLOGY VELOCITY COMPUTERIZED SIMULATION DATA PROCESSING EDDIES(FLUID MECHANICS) SATELLITE METEOROLOGY DEEP WATER SURFACE TEMPERATURE SALINITY MIXED LAYER(MARINE) SHALLOW WATER BATHYMETRY MARINE ATMOSPHERES PREDICTIONS GLOBAL SYMPOSIA COASTAL REGIONS *GLOBAL OCEAN PREDICTION VERTICAL COORDINATES NOWCASTING ECMWF(EUROPEAN CENTER FOR MEDIUM-RANGE WEATHER FORECASTS) SSH(SEA SURFACE HEIGHT) WIND FORCING THERMAL FORCING STRATIFIED OCEAN MIXED OCEAN SHALLOW OCEAN PE0601153N WU738677065 |
description |
One important aspect of ocean model design is the choice of the vertical coordinate system. Traditional ocean models use a single coordinate type to represent the vertical, but model comparison exercises performed in Europe (DYnamics of North Atlantic MOdels (DYNAMO)) and in the United States (Data Assimilation and Model Evaluation Experiment (DAMEE)) have shown that none of the three main vertical coordinates presently in use (depth [z-levels], density [isopycnal layers], or terrain-following [sigma-levels]) can by itself be optimal everywhere in the ocean. The HYbrid Coordinate Ocean Model (HYCOM) (Bleck, 2002) is configured to combine all three of these vertical coordinate types. It is isopycnal in the open, stratified ocean, but uses the layered continuity equation to make a dynamically smooth transition to a terrain-following coordinate in shallow coastal regions, and to z-level coordinates in the mixed layer and/or unstratified seas. The hybrid coordinate extends the geographic range of applicability of traditional isopycnic coordinate circulation models toward shallow coastal seas and unstratified parts of the world ocean. It maintains the significant advantages of an isopycnal model in stratified regions while allowing more vertical resolution near the surface and in shallow coastal areas, hence providing a better representation of the upper ocean physics. HYCOM is designed to provide a major advance over the existing operational global ocean prediction systems, since it overcomes design limitations of the present systems as well as limitations in vertical and horizontal resolution. The result should be a more streamlined system with improved performance and an extended range of applicability (e.g., the present systems are seriously limited in shallow water and in handling the transition from deep to shallow water). Presented at the High Performance Computing Modernization Program (HPCMP) Users Group Conference held in Denver, CO, on 26-29 Jun 2006. Pub. in the Proceedings of the High Performance Computing Modernization Program (HPCMP) Users Group Conference, p271-274, 2006. Prepared in cooperation with The Center for Ocean-Atmospheric Prediction Studies, Florida State University, Tallahassee, FL, and Planning Systems, Inc., Slidell, LA. |
author2 |
NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV |
format |
Text |
author |
Metzger, E. J. Hurlburt, Harley E. Wallcraft, Alan J. Cummings, James A. Chassignet, Eric P. Smedstad, Ole M. |
author_facet |
Metzger, E. J. Hurlburt, Harley E. Wallcraft, Alan J. Cummings, James A. Chassignet, Eric P. Smedstad, Ole M. |
author_sort |
Metzger, E. J. |
title |
Global Ocean Prediction Using HYCOM |
title_short |
Global Ocean Prediction Using HYCOM |
title_full |
Global Ocean Prediction Using HYCOM |
title_fullStr |
Global Ocean Prediction Using HYCOM |
title_full_unstemmed |
Global Ocean Prediction Using HYCOM |
title_sort |
global ocean prediction using hycom |
publishDate |
2006 |
url |
http://www.dtic.mil/docs/citations/ADA470731 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA470731 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA470731 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766137048512593920 |