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Evolution of the Arctic Climate System Simulated by Pan-Arctic Weather Research and Forecasting (WRF) as Sea Ice Changes

Evolution of the Arctic Climate System Simulated by Pan-Arctic Weather Research and Forecasting (WRF) as Sea Ice Changes
Type: 
Poster
William J. Gutowski1, John Cassano2, Justin Glisan3, Brandon Fisel4, Matt Higgins5, Mark Seefeldt6
1Dept. of Geological & Atmospheric Sciences, Iowa State University, 3021 Agronomy, Ames, IA, 50011-1010, USA, Fax 515-294-2619, gutowski [at] iastate [dot] edu
2University of Colorado, USA
3Iowa State University, USA
4Iowa State University, USA
5University of Colorado, USA
6Brown University, USA

As part of the development of a Regional Arctic Climate System Model (RACM), we have been performing ensemble simulations on a pan-arctic domain using a version of the Weather Research and Forecasting (WRF) model that has been optimized for polar regions. This version of WRF will be part of RACM, and simulations using this version of WRF as a stand-alone model will provide a baseline for assessing the behavior of RACM's fully coupled land–ocean–ice–atmosphere system. This presentation presents impacts of sea-ice changes on the land-atmosphere behavior simulated by WRF and on fluxes between the atmosphere and the underlying ocean/ice. The ensemble simulations help us distinguish impacts of sea-ice changes from those due to internal variability (noise). Part of our analysis describes simulated changes in features of the region's climate such as mean temperature, precipitation and circulation, including storm tracks and other synoptic weather patterns. In addition, we diagnose how these changes influence the frequency, intensity and duration of temperature and precipitation extremes.

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National Science Foundation | Division of Arctic Sciences
National Science Foundation
National Oceanic and Atmospheric Administration
National Oceanic and Atmospheric Administration
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International Arctic Systems for Observing the Atmosphere
Study of Environmental Arctic Change
Study of Environmental Arctic Change
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Arctic Ocean Sciences Board
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Alaska Ocean Observing System
Department of Energy
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National Aeronautics and Space Administration
World Wildlife Fund
WWF
Association of Polar Early Career Scientists
Association of Polar Early Career Scientists
Bureau of Land Management
Bureau of Land Management
International Study of Arctic Change
International Study of Arctic Change
ArcticNet
ArcticNet
DAMOCLES
Developing Arctic Modeling and Observing Capabilities for Long-term Environmental Studies

This work is supported by the National Science Foundation (NSF) under the ARCUS Cooperative Agreement ARC-0618885. Any opinions, findings, and conclusions or recommendations expressed do not necessarily reflect the views of the NSF.