29 November 2017 at 17:00 GMT
Speaker: Dr. Matthieu Chevallier (CNRS-GAME/MétéoFrance, Toulouse, France)
Weather and climate models have typically been developed for mid-latitude regions, but different processes are relevant for the Polar regions. Prediction in the Arctic and beyond using global models can be improved through a better representation of processes at the atmosphere-sea ice-ocean interfaces, including small-scale processes, and through a revisit of the atmosphere-ocean coupling strategy in coupled models.
This webinar will focus on ‘Enhanced weather and climate models’, one of five science work packages of the EU-funded APPLICATE project, which brings together a European consortium of scientists from different disciplines to advance our capability to predict the weather and climate in the Arctic and beyond. Improved modelling capabilities will be achieved through enhanced process descriptions in the various components (atmosphere, snow, sea-ice, ocean) of the models. Our primary targets will be to address well-known problems in processes that contribute to momentum transfer at the surface and to the surface energy budget. Other improvements are related to coupling processes between the atmosphere and the land or sea-ice/ocean surface. A novel approach of a coupled single-column model will be extensively used as an intermediate step to constrain the model physics towards fully coupled modelling for weather and climate predictions. Based on a set of coordinated model experiments, using available and upcoming observations, we will assess the impact of model improvements. To find out more about the APPLICATE project go to: https://applicate.eu