Research on Ocean Forecasting and Nonlinear Wave Propagation and Numerical Hydrodynamics in the Ocean.
During this reporting period we carried out research which would improve the accuracy of the NPE (Nonlinear Progressive-Wave Equation), TOPS (Thermodynamic Ocean Prediction System) and Hibler Sea Ice models and would reduce the discrepancies between the models and actual experimental observations. T...
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ftdtic:ADA193363 2023-05-15T16:37:25+02:00 Research on Ocean Forecasting and Nonlinear Wave Propagation and Numerical Hydrodynamics in the Ocean. BERKELEY RESEARCH ASSOCIATES INC CA 1988-01 text/html http://www.dtic.mil/docs/citations/ADA193363 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA193363 en eng http://www.dtic.mil/docs/citations/ADA193363 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Physical and Dynamic Oceanography Statistics and Probability Snow Ice and Permafrost *SEA ICE ACCURACY MARINE CLIMATOLOGY COMPUTER PROGRAMS CONCENTRATION(COMPOSITION) DAMPING DRIFT FORECASTING HEAT FLUX HYDRODYNAMICS ICE MEAN MATHEMATICAL MODELS NONLINEAR PROPAGATION ANALYSIS NUMERICAL ANALYSIS OCEAN CURRENTS OCEAN ENVIRONMENTS OCEAN MODELS OCEAN SURFACE OCEANS POLAR REGIONS PREDICTIONS REGIONS SEA WATER STATISTICAL PROCESSES SURFACE PROPERTIES SURFACE TEMPERATURE THERMODYNAMICS THICKNESS WAVE PROPAGATION MATHEMATICAL PREDICTION VARIATIONS Upper ocean TOPS(Thermodynamic Ocean Prediction System) Hibler ice model. Text 1988 ftdtic 2016-02-19T11:10:00Z During this reporting period we carried out research which would improve the accuracy of the NPE (Nonlinear Progressive-Wave Equation), TOPS (Thermodynamic Ocean Prediction System) and Hibler Sea Ice models and would reduce the discrepancies between the models and actual experimental observations. To simulate a greater variety of ocean environments, the NPE computer code was modified to include a damping region. The inclusion of these enhancements has provided a means to better understand real oceans. We also examined the ability of statistical techniques to forecast upper ocean deviations from climatology on 1 to 7 day time scales. Sea surface temperature deviations in the 2.5 to 62.5 meter region in depth were predicted using available information on surface conditions and 'recent' deviations at the same location. We used a hydrodynamic/thermodynamic sea ice model to predict sea ice concentration, thickness and drift. The operational model, the Polar Ice Prediction System is based on the Hibler (1979) model only with the addition of thermodynamics similar to that used by Semtner(1976). It is driven by atmospheric forcing from the Navy Operational Global Atmospheric Prediction System (NOGAPS) model, as well as monthly mean climatological ocean currents and oceanic heat fluxes. Keywords: Ocean models. Text Ice permafrost Sea ice Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Physical and Dynamic Oceanography Statistics and Probability Snow Ice and Permafrost *SEA ICE ACCURACY MARINE CLIMATOLOGY COMPUTER PROGRAMS CONCENTRATION(COMPOSITION) DAMPING DRIFT FORECASTING HEAT FLUX HYDRODYNAMICS ICE MEAN MATHEMATICAL MODELS NONLINEAR PROPAGATION ANALYSIS NUMERICAL ANALYSIS OCEAN CURRENTS OCEAN ENVIRONMENTS OCEAN MODELS OCEAN SURFACE OCEANS POLAR REGIONS PREDICTIONS REGIONS SEA WATER STATISTICAL PROCESSES SURFACE PROPERTIES SURFACE TEMPERATURE THERMODYNAMICS THICKNESS WAVE PROPAGATION MATHEMATICAL PREDICTION VARIATIONS Upper ocean TOPS(Thermodynamic Ocean Prediction System) Hibler ice model. |
spellingShingle |
Physical and Dynamic Oceanography Statistics and Probability Snow Ice and Permafrost *SEA ICE ACCURACY MARINE CLIMATOLOGY COMPUTER PROGRAMS CONCENTRATION(COMPOSITION) DAMPING DRIFT FORECASTING HEAT FLUX HYDRODYNAMICS ICE MEAN MATHEMATICAL MODELS NONLINEAR PROPAGATION ANALYSIS NUMERICAL ANALYSIS OCEAN CURRENTS OCEAN ENVIRONMENTS OCEAN MODELS OCEAN SURFACE OCEANS POLAR REGIONS PREDICTIONS REGIONS SEA WATER STATISTICAL PROCESSES SURFACE PROPERTIES SURFACE TEMPERATURE THERMODYNAMICS THICKNESS WAVE PROPAGATION MATHEMATICAL PREDICTION VARIATIONS Upper ocean TOPS(Thermodynamic Ocean Prediction System) Hibler ice model. Research on Ocean Forecasting and Nonlinear Wave Propagation and Numerical Hydrodynamics in the Ocean. |
topic_facet |
Physical and Dynamic Oceanography Statistics and Probability Snow Ice and Permafrost *SEA ICE ACCURACY MARINE CLIMATOLOGY COMPUTER PROGRAMS CONCENTRATION(COMPOSITION) DAMPING DRIFT FORECASTING HEAT FLUX HYDRODYNAMICS ICE MEAN MATHEMATICAL MODELS NONLINEAR PROPAGATION ANALYSIS NUMERICAL ANALYSIS OCEAN CURRENTS OCEAN ENVIRONMENTS OCEAN MODELS OCEAN SURFACE OCEANS POLAR REGIONS PREDICTIONS REGIONS SEA WATER STATISTICAL PROCESSES SURFACE PROPERTIES SURFACE TEMPERATURE THERMODYNAMICS THICKNESS WAVE PROPAGATION MATHEMATICAL PREDICTION VARIATIONS Upper ocean TOPS(Thermodynamic Ocean Prediction System) Hibler ice model. |
description |
During this reporting period we carried out research which would improve the accuracy of the NPE (Nonlinear Progressive-Wave Equation), TOPS (Thermodynamic Ocean Prediction System) and Hibler Sea Ice models and would reduce the discrepancies between the models and actual experimental observations. To simulate a greater variety of ocean environments, the NPE computer code was modified to include a damping region. The inclusion of these enhancements has provided a means to better understand real oceans. We also examined the ability of statistical techniques to forecast upper ocean deviations from climatology on 1 to 7 day time scales. Sea surface temperature deviations in the 2.5 to 62.5 meter region in depth were predicted using available information on surface conditions and 'recent' deviations at the same location. We used a hydrodynamic/thermodynamic sea ice model to predict sea ice concentration, thickness and drift. The operational model, the Polar Ice Prediction System is based on the Hibler (1979) model only with the addition of thermodynamics similar to that used by Semtner(1976). It is driven by atmospheric forcing from the Navy Operational Global Atmospheric Prediction System (NOGAPS) model, as well as monthly mean climatological ocean currents and oceanic heat fluxes. Keywords: Ocean models. |
author2 |
BERKELEY RESEARCH ASSOCIATES INC CA |
format |
Text |
title |
Research on Ocean Forecasting and Nonlinear Wave Propagation and Numerical Hydrodynamics in the Ocean. |
title_short |
Research on Ocean Forecasting and Nonlinear Wave Propagation and Numerical Hydrodynamics in the Ocean. |
title_full |
Research on Ocean Forecasting and Nonlinear Wave Propagation and Numerical Hydrodynamics in the Ocean. |
title_fullStr |
Research on Ocean Forecasting and Nonlinear Wave Propagation and Numerical Hydrodynamics in the Ocean. |
title_full_unstemmed |
Research on Ocean Forecasting and Nonlinear Wave Propagation and Numerical Hydrodynamics in the Ocean. |
title_sort |
research on ocean forecasting and nonlinear wave propagation and numerical hydrodynamics in the ocean. |
publishDate |
1988 |
url |
http://www.dtic.mil/docs/citations/ADA193363 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA193363 |
genre |
Ice permafrost Sea ice |
genre_facet |
Ice permafrost Sea ice |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA193363 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766027713798209536 |