Numerical Prediction Of Marine Fog Using The Coupled Ocean Atmosphere Mesoscale Prediction System Coamps
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Numerical Prediction Of Marine Fog Using The Coupled Ocean Atmosphere Mesoscale Prediction System Coamps
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Author : John L. Dumas
language : en
Publisher:
Release Date : 2001-03-01
Numerical Prediction Of Marine Fog Using The Coupled Ocean Atmosphere Mesoscale Prediction System Coamps written by John L. Dumas and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-03-01 with categories.
The U.S. Navy's requirement for a computer prediction system for marine fog and stratus dates back to the 1970s when meteorological models were being introduced to the fleet. The Naval Research Laboratory's Coupled Ocean/ Atmosphere Mesoscale Prediction System (COAMPS) is a leap forward in the Navy's numerical modeling ability but it still does not show great skill in fog forecasting. COAMPS has been 'tuned', or adjusted for certain constants and parameterizations, so that it has the minimum error for the maximum area. This tuning is a common practice for all numerical models. The objective of this thesis is to determine if changes can be made to the existing COAMPS code based on reasonable physical experiments for a specific location to help solve the numerical fog forecasting problem. The effectiveness of these experiments was first measured by comparing a modeled cloud edge to satellite imagery of Monterey, California taken during a week in August 2000 under a variety of foggy conditions. Comparisons were also made with observations taken from an aircraft, land stations and a vertical profiler. The experiments, specifically those regarding changes to the autoconversion and turbulent kinetic energy schemes, showed that while a perfect solution has not been found, it is possible to modify the model physics codes and optimize its performance in a specific region.
Numerical Prediction Of Marine Fog Using The Coupled Ocean Atmosphere Mesoscale Prediction System Coamps
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Author :
language : en
Publisher:
Release Date : 2001
Numerical Prediction Of Marine Fog Using The Coupled Ocean Atmosphere Mesoscale Prediction System Coamps written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
The U.S. Navy's requirement for a computer prediction system for marine fog and stratus dates back to the 1970s when meteorological models were being introduced to the fleet. The Naval Research Laboratory's Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS) is a leap forward in the Navy's numerical modeling ability but it still does not show great skill in fog forecasting. COAMPS has been 'tuned', or adjusted for certain constants and parameterizations, so that it has the minimum error for the maximum area. This tuning is a common practice for all numerical models. The objective of this thesis is to determine if changes can be made to the existing COAMPS code based on reasonable physical experiments for a specific location to help solve the numerical fog forecasting problem. The effectiveness of these experiments was first measured by comparing a modeled cloud edge to satellite imagery of Monterey, California taken during a week in August 2000 under a variety of foggy conditions. Comparisons were also made with observations taken from an aircraft, land stations and a vertical profiler. The experiments, specifically those regarding changes to the autoconversion and turbulent kinetic energy schemes, showed that while a perfect solution has not been found, it is possible to modify the model physics codes and optimize its performance in a specific region.
Marine Fog Challenges And Advancements In Observations Modeling And Forecasting
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Author : Darko Koračin
language : en
Publisher: Springer
Release Date : 2017-01-28
Marine Fog Challenges And Advancements In Observations Modeling And Forecasting written by Darko Koračin and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-28 with Science categories.
This volume presents the history of marine fog research and applications, and discusses the physical processes leading to fog's formation, evolution, and dissipation. A special emphasis is on the challenges and advancements of fog observation and modeling as well as on efforts toward operational fog forecasting and linkages and feedbacks between marine fog and the environment.
Conference On Mountain Meteorology
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Author :
language : en
Publisher:
Release Date : 1998
Conference On Mountain Meteorology written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Meteorology categories.
Software User S Manual For The Coupled Ocean Atmosphere Mesoscale Prediction System Coamps
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Author :
language : en
Publisher:
Release Date : 1996
Software User S Manual For The Coupled Ocean Atmosphere Mesoscale Prediction System Coamps written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
Numerical models have been an effective tool in the prediction of many geophysical systems. Processes within the earth's two primary physical systems, the ocean and atmosphere, directly impact Naval operations on the mesoscale and the local PBL scale. Consequently, accurate and efficient prediction on these scales is a necessity. Scientists now consider the ocean and atmosphere as separate but fully coupled, two-way interactive fluids. Predicting the behavior of either fluid depends upon the spatial and temporal forcing applied by the other. Thus, a single numerical prediction system combining an oceanic and an atmospheric model provides more realistic representation of these two geophysical systems. Additionally in the past decade, increased computer power and technological advancements have improved computational efficiency allowing larger models, with higher resolution, multi-nested grids and complicated physics, to be developed and run for real-time forecasting purposes. When used in a research mode, the models also provide valuable insight toward understanding complex mesoscale interactions. To fully utilize modern computer resources and to meet the growing need for high resolution, coupled oceanic/atmospheric forecasts, a new model has been developed by the Naval Research Laboratory: The Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS).
Elenco Delle Leggi E Delle Disposizioni Regolamentari Sulla Emigrazione Dagli Stati D Europa E Sull Immigrazione E Colonizzazione In Vari Paesi D America Africa Ed Australia
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Author :
language : en
Publisher:
Release Date : 1905
Elenco Delle Leggi E Delle Disposizioni Regolamentari Sulla Emigrazione Dagli Stati D Europa E Sull Immigrazione E Colonizzazione In Vari Paesi D America Africa Ed Australia written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1905 with categories.
Numerical Techniques And Cloud Scale Processes For High Resolution Models
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Author :
language : en
Publisher:
Release Date : 2008
Numerical Techniques And Cloud Scale Processes For High Resolution Models written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
The long-term goal of this project is to design and evaluate the components that will comprise a next generation mesoscale atmospheric model within the Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS(tm)1). It is anticipated that to meet future Navy requirements, next generation approaches to numerical techniques and physical parameterizations will be needed.
The Naval Research Laboratory S Parallel Coupled Ocean Atmosphere Mesoscale Prediction System
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Author :
language : en
Publisher:
Release Date : 1997
The Naval Research Laboratory S Parallel Coupled Ocean Atmosphere Mesoscale Prediction System written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
The U.S Navy has a strong interest in conducting atmospheric research in support of operational mesoscale forecasts used to derive atmospheric conditions deemed of strategic interest within the littoral. This effort will require relatively fine horizontal resolution (generally less than 10 km) to accurately represent the complex flow and thermodynamic conditions which typically reside near the coastal regions of the globe. The task is made even more difficult by the need to produce the required high resolution products within an operationally viable time frame. It is toward this end that the Naval Research Laboratory, in collaboration with the High Performance Computing Section of the National Oceanic and Atmospheric Administration's Forecasts Systems Laboratory (NOAA FSL), has embarked on developing a parallel version of the Coupled Oceanic Atmospheric Mesoscale Prediction System (COAMPS, Hodur 1997). The COAMPS is a nonhydrostatic fully compressible finite difference model which uses the Arakawa-C grid stagger. The purpose of this paper is to provide a brief overview of the effort to parallelize COAMPS together with two examples illustrating the naval need for parallel computational capability.
Coupled Ocean Atmospheric Modeling For 3 15 Day Numerical Prediction
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Author : Thomas E. Rosmond
language : en
Publisher:
Release Date : 1983
Coupled Ocean Atmospheric Modeling For 3 15 Day Numerical Prediction written by Thomas E. Rosmond and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Numerical weather forecasting categories.
Contents: Navy Atmospheric Prediction Model; The Role of Air-Sea Feedback Coupling in Analysis and Prediction of Ocean Thermal Structure at FNOC; World Ocean Model: A Preliminary Report; Thoughts on Coupled Ocean-Atmosphere Models; Ocean Thermal Response to a Global Sector Atmospheric Numerical Model; Use of Satellite Derived SSTs in NWP; Speculations on the Impact of Improved Air-Sea Exchanges in Storm Development in Operational Prediction Models; Interactive Ocean-Atmosphere Modeling at the National Center for Atmospheric Research; GLAS Activities in Atmospheric-Ocean Prediction; Results of the Oregon State University Interactive Ocean-Atmospheric Model; Predictability of the Ocean Mixed Layer; Sensitivity of Atmospheric Models to SST.
Improving Surface Flux Parameterizations In The Nrl Coupled Ocean Atmosphere Mesoscale Prediction System
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Author :
language : en
Publisher:
Release Date : 2008
Improving Surface Flux Parameterizations In The Nrl Coupled Ocean Atmosphere Mesoscale Prediction System written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
The long-term goal is to understand the physical processes that critically regulate the coupling between the oceanic and atmospheric boundary layers and develop advanced parameterizations of this interaction for a new generation of coupled ocean-atmosphere models.