Author: Peter Joshua Rovero
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 98
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Book Description
The purpose of this research is to explore the need for time-dependent sea-surface temperatures in atmospheric model predictions to 10 days. Six and nine-layer versions of the Navy Operational Global Prediction System (NOGAPS) are used in this study. Control forecasts were made in which the sea-surface temperature (SST) is fixed in time. Test hindcasts were made in which the SST was updated at each time step of the atmospheric model using interpolations of 12-hourly SST analyses. The 10-day predictions are compared to determine any improvement or degradation due to the time-dependent SST. Two cases are analyzed, one during November 1983 and another during April 1984. Use of time-dependent SST's resulted in significant changes in the forecast fields of surface heat fluxes and precipitation which were physically consistent with the SST trend. Analysis of 15 storm forecasts revealed significant changes in storm track duration or cyclogenesis in only 4 cases. Three of these cases were forecast by the nine-layer version of NOGAPS during the April period and one case was forecast by the six-layer NOCAPS during the November period. Originator-supplied keywords include: Atmosphere-ocean coupled models, Sea surface temperature, NOGAPS, and T-EOTS.
Author: National Research Council
Publisher: National Academies Press
ISBN: 030909609X
Category : Science
Languages : en
Pages : 84
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Book Description
The National Academies' Board on Atmospheric Sciences and Climate (BASC) held a workshop to explore and evaluate current efforts to model physical processes of coupled atmosphere-land-ocean (A-L-O) models. Numerical models of the atmosphere and ocean are central to weather prediction, research, and education. Although great strides have been made over the past few decades in understanding the atmosphere and ocean, modeling capabilities, and numerical A-L-O simulations, some unresolved processes in the models do not adequately represent knowledge of the underlying physics. Moreover, there is evidence that further progress in numerical simulations is being impeded by the slow pace of improvement in the representation of key physical processes in the models and the fact that geophysical flow models are not receiving the attention needed to make these tools more useful and accurate. These models often are used to predict future events, so it is imperative that their underlying physical processes be represented as robustly as possible. During the workshop, the parameterization of physical processes in A-L-O models was addressed, including associated errors, testing, and efforts to improve the use of parameterizations. Participants also examined intellectual and scientific challenges in modeling and highlighted the idea that some of the key impediments to progress in representing physical processes are primarily cultural in nature.
Author: Carlos Roberto Mechoso
Publisher: World Scientific
ISBN: 9811232954
Category : Science
Languages : en
Pages : 203
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Book Description
Coupled atmosphere-ocean models are at the core of numerical climate models. There is an extraordinarily broad class of coupled atmosphere-ocean models ranging from sets of equations that can be solved analytically to highly detailed representations of Nature requiring the most advanced computers for execution. The models are applied to subjects including the conceptual understanding of Earth's climate, predictions that support human activities in a variable climate, and projections aimed to prepare society for climate change. The present book fills a void in the current literature by presenting a basic and yet rigorous treatment of how the models of the atmosphere and the ocean are put together into a coupled system. The text of the book is divided into chapters organized according to complexity of the components that are coupled. Two full chapters are dedicated to current efforts on the development of generalist couplers and coupling methodologies all over the world.
Author: Timothy N. Stockdale
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: J.C.J. Nihoul
Publisher: Elsevier
ISBN: 0080870783
Category : Science
Languages : en
Pages : 793
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Book Description
The exchange of momentum, heat, moisture, gases (such as CO2 and O2) and salt between the atmosphere and the ocean is a phenomenon of paramount importance for the dynamics of the atmosphere and the ocean. With the pressing need for reliable climate forecast (e.g. to deal with severe food and energy problems) interactive ocean-atmosphere models have become one of the main objectives of geophysical fluid dynamics. This volume provides the first state-of-the-art review of interactive ocean-atmosphere modelling and its application to climates. The papers are by active and eminent scientists from different countries and different disciplines. They provide a up-to-date survey of major recent discoveries and valuable recommendations for future research.
Author:
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 108
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 500
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Author: Thomas E. Rosmond
Publisher:
ISBN:
Category : Numerical weather forecasting
Languages : en
Pages : 88
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Book Description
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.
Author: Eric P. Chassignet
Publisher: Springer Science & Business Media
ISBN: 1402040288
Category : Science
Languages : en
Pages : 573
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Book Description
This volume covers a wide range of topics and summarizes our present knowledge in ocean modeling, ocean observing systems, and data assimilation. The Global Ocean Data Assimilation Experiment (GODAE) provides a framework for these efforts: a global system of observations, communications, modeling, and assimilation that will deliver regular, comprehensive information on the state of the oceans, engendering wide utility and availability for maximum benefit to the community.
Author: Timothy N. Stockdale
Publisher:
ISBN:
Category : Ocean circulation
Languages : en
Pages : 482
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Book Description
