Search Results - "Palmer, Tim N"

How confident are predictability estimates of the winter North Atlantic Oscillation? by Weisheimer, Antje, Decremer, Damien, MacLeod, David, O'Reilly, Christopher, Stockdale, Tim N., Johnson, Stephanie, Palmer, Tim N.

“…Atmospheric seasonal predictability in winter over the Euro‐Atlantic region is studied with an emphasis on the signal‐to‐noise paradox of the North Atlantic…”
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Periodic orbits in chaotic systems simulated at low precision by Klöwer, Milan, Coveney, Peter V., Paxton, E. Adam, Palmer, Tim N.

“…Non-periodic solutions are an essential property of chaotic dynamical systems. Simulations with deterministic finite-precision numbers, however, always yield…”
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Impact of 2007 and 2008 Arctic ice anomalies on the atmospheric circulation: Implications for long‐range predictions by Balmaseda, Magdalena A., Ferranti, Laura, Molteni, Franco, Palmer, Tim N.

“…The impact on the atmospheric circulation of the unprecedented Arctic sea‐ice anomalies during the summers 2007 and 2008 is evaluated using the atmospheric…”
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Fluid Simulations Accelerated With 16 Bits: Approaching 4x Speedup on A64FX by Squeezing ShallowWaters.jl Into Float16 by Klöwer, Milan, Hatfield, Sam, Croci, Matteo, Düben, Peter D., Palmer, Tim N.

“…Most Earth‐system simulations run on conventional central processing units in 64‐bit double precision floating‐point numbers Float64, although the need for…”
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Climate SPHINX: evaluating the impact of resolution and stochastic physics parameterisations in the EC-Earth global climate model by Davini, Paolo, von Hardenberg, Jost, Corti, Susanna, Christensen, Hannah M, Juricke, Stephan, Subramanian, Aneesh, Watson, Peter A. G, Weisheimer, Antje, Palmer, Tim N

“…The Climate SPHINX (Stochastic Physics HIgh resolutioN eXperiments) project is a comprehensive set of ensemble simulations aimed at evaluating the sensitivity…”
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Ensemble superparameterization versus stochastic parameterization: A comparison of model uncertainty representation in tropical weather prediction by Subramanian, Aneesh C., Palmer, Tim N.

“…Stochastic schemes to represent model uncertainty in the European Centre for Medium‐Range Weather Forecasts (ECMWF) ensemble prediction system has helped…”
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The new VarEPS‐monthly forecasting system: A first step towards seamless prediction by Vitart, Frédéric, Buizza, Roberto, Alonso Balmaseda, Magdalena, Balsamo, Gianpaolo, Bidlot, Jean‐Raymond, Bonet, Axel, Fuentes, Manuel, Hofstadler, Alfred, Molteni, Franco, Palmer, Tim N.

“…A combined medium‐range and monthly‐forecasting forecasting system is now operational at the European Centre for Medium‐Range Weather Forecasts. Previously,…”
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Signal and noise in regime systems: A hypothesis on the predictability of the North Atlantic Oscillation by Strommen, Kristian, Palmer, Tim N.

“…Studies conducted by the UK Met Office reported significant skill in predicting the winter North Atlantic Oscillation (NAO) index with their seasonal…”
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Supermeasured: Violating Bell-Statistical Independence Without Violating Physical Statistical Independence by Hance, Jonte R., Hossenfelder, Sabine, Palmer, Tim N.

“…Bell’s theorem is often said to imply that quantum mechanics violates local causality, and that local causality cannot be restored with a hidden-variables…”
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Stochastic Subgrid-Scale Ocean Mixing: Impacts on Low-Frequency Variability by Juricke, Stephan, Palmer, Tim N., Zanna, Laure

“…In global ocean models, the representation of small-scale, high-frequency processes considerably influences the large-scale oceanic circulation and its…”
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A Generative Deep Learning Approach to Stochastic Downscaling of Precipitation Forecasts by Harris, Lucy, McRae, Andrew T. T., Chantry, Matthew, Dueben, Peter D., Palmer, Tim N.

“…Despite continuous improvements, precipitation forecasts are still not as accurate and reliable as those of other meteorological variables. A major…”
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Variability in seasonal forecast skill of Northern Hemisphere winters over the twentieth century by O'Reilly, Christopher H., Heatley, James, MacLeod, Dave, Weisheimer, Antje, Palmer, Tim N., Schaller, Nathalie, Woollings, Tim

“…Seasonal hindcast experiments, using prescribed sea surface temperatures (SSTs), are analyzed for Northern Hemisphere winters from 1900 to 2010. Ensemble mean…”
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Seasonal to annual ocean forecasting skill and the role of model and observational uncertainty by Juricke, Stephan, MacLeod, Dave, Weisheimer, Antje, Zanna, Laure, Palmer, Tim N.

“…Accurate forecasts of the ocean state and the estimation of forecast uncertainties are crucial when it comes to providing skilful seasonal predictions. In this…”
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Reliable low precision simulations in land surface models by Dawson, Andrew, Düben, Peter D., MacLeod, David A., Palmer, Tim N.

“…Weather and climate models must continue to increase in both resolution and complexity in order that forecasts become more accurate and reliable. Moving to…”
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The impact of stochastic physics on tropical rainfall variability in global climate models on daily to weekly time scales by Watson, Peter A. G., Berner, Judith, Corti, Susanna, Davini, Paolo, Hardenberg, Jost, Sanchez, Claudio, Weisheimer, Antje, Palmer, Tim N.

“…Many global atmospheric models have too little precipitation variability in the tropics on daily to weekly time scales and also a poor representation of…”
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Compressing atmospheric data into its real information content by Klöwer, Milan, Razinger, Miha, Dominguez, Juan J, Düben, Peter D, Palmer, Tim N

“…Hundreds of petabytes are produced annually at weather and climate forecast centers worldwide. Compression is essential to reduce storage and to facilitate…”
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Experimental Non-Violation of the Bell Inequality by Palmer, Tim

“…A finite non-classical framework for qubit physics is described that challenges the conclusion that the Bell Inequality has been shown to have been violated…”
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Progress towards a probabilistic Earth system model: examining the impact of stochasticity in the atmosphere and land component of EC-Earth v3.2 by Strommen, Kristian, Christensen, Hannah M, MacLeod, Dave, Juricke, Stephan, Palmer, Tim N

“…We introduce and study the impact of three stochastic schemes in the EC-Earth climate model: two atmospheric schemes and one stochastic land scheme. These form…”
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Solving difficult problems creatively: a role for energy optimised deterministic/stochastic hybrid computing by Palmer, Tim N, O'Shea, Michael

“…How is the brain configured for creativity? What is the computational substrate for 'eureka' moments of insight? Here we argue that creative thinking arises…”
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Stochastic Subgrid-Scale Ocean Mixing: Impacts on Low-Frequency Variability by Juricke, Stephan, Palmer, Tim N, Zanna, Laure

“…In global ocean models, the representation of small-scale, high-frequency processes considerably influences the large-scale oceanic circulation and its…”
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