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Stochastic Subgrid-Scale Ocean Mixing: Impacts on Low-Frequency Variability
Publisher: American Meteorological Society
Abstract: AbstractIn global ocean models, the representation of small-scale, high-frequency processes considerably influences the large-scale oceanic circulation and its low-frequency variability. This study investigates the impact ...
A Stochastic Representation of Subgrid Uncertainty for Dynamical Core Development
Publisher: American Meteorological Society
Abstract: AbstractNumerical weather prediction and climate models comprise a) a dynamical core describing resolved parts of the climate system and b) parameterizations describing unresolved components. Development of new subgrid-scale ...
Improving Weather Forecast Skill through Reduced-Precision Data Assimilation
Publisher: American Meteorological Society
Abstract: AbstractA new approach for improving the accuracy of data assimilation, by trading numerical precision for ensemble size, is introduced. Data assimilation is inherently uncertain because of the use of noisy observations ...
Scale-Selective Precision for Weather and Climate Forecasting
Publisher: American Meteorological Society
Abstract: Attempts to include the vast range of length scales and physical processes at play in Earth?s atmosphere push weather and climate forecasters to build and more efficiently utilize some of the most powerful computers in the ...
Single Precision in Weather Forecasting Models: An Evaluation with the IFS
Publisher: American Meteorological Society
Abstract: arth?s climate is a nonlinear dynamical system with scale-dependent Lyapunov exponents. As such, an important theoretical question for modeling weather and climate is how much real information is carried in a model?s ...
A Century in Hindcast: Building a Suitable Test for Seasonal Forecasts
Publisher: American Meteorological Society
Impact of Initial Conditions versus External Forcing in Decadal Climate Predictions: A Sensitivity Experiment
Publisher: American Meteorological Society
Abstract: he impact of initial conditions relative to external forcings in decadal integrations from an ensemble of state-of-the-art prediction models has been assessed using specifically designed sensitivity experiments (SWAP ...
The Signal-to-Noise Paradox in Climate Forecasts: Revisiting Our Understanding and Identifying Future Priorities
Publisher: American Meteorological Society
An Earth-System Prediction Initiative for the Twenty-First Century
Publisher: American Meteorological Society
Abstract: sity and benefits for establishing the international Earth-system Prediction Initiative (EPI) are discussed by scientists associated with the World Meteorological Organization (WMO) World Weather Research Programme (WWRP), ...
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