1. High Resolution Coupled Model Development and Research at GFDL Whit Anderson Ron Pacanowski Tom Delworth Tony Rosati Riccardo Farneti Gabriel Vecchi Hyun-Chul Lee Andrew Wittenberg Rym Msadek Fanrong Zhang Rong Zhang Hi-Res Atmos Group

2. High Resolution Model development Scientific Goals: Simulated variability and predictability is likely a function of the model Developing improved models (higher resolution, improved physics, reduced bias) is crucial for studies of variability and predictability Explore ocean’s role in climate variability and change using a high resolution coupled model. New global coupled models: CM2.4, CM2.5, CM2.6 2 OceanAtmosComputerStatus CM2.1100 Km250 KmGFDLRunning CM2.3100 Km GFDLRunning CM2.410-25 Km100 KmGFDLRunning CM2.5 10-25 Km50 KmDOERunning CM2.64-10 Km25 KmDOEIn development

3. Observed rainfall GFDL CM2.1 2° Atmosphere 1° Ocean

4. Observed rainfall GFDL CM2.1 2° Atmosphere 1° Ocean GFDL CM2.3 1° Atmosphere 1° Ocean

5. Observed rainfall GFDL CM2.1 2° Atmosphere 1° Ocean GFDL CM2.3 1° Atmosphere 1° Ocean GFDL CM2.4 1° Atmosphere 1/4° Ocean

6. Observed rainfall GFDL CM2.1 2° Atmosphere 1° Ocean GFDL CM2.3 1° Atmosphere 1° Ocean GFDL CM2.4 1° Atmosphere 1/4° Ocean GFDL CM2.5 1/2° Atmosphere 1/4° Ocean

10. Weather Climate Connection Improved regional forecast capabilities of U.S. temperatures and precipitation from a week to a season. Climate prediction capabilities for high-impact events, including droughts and major floods. Enhanced data sets and analyses to identify and interpret weather-climate connections between the tropics and mid- latitudes. Improve understanding and predictions of connections between climate variations and high impact weather phenomena (droughts, floods)‏