Challenges and advances in convection-permitting climate modeling

The Global Energy and Water Water Exchanges project (GEWEX) Convection-Permitting Climate Modeling Workshop was held on 6-8 September 2016 at Colorado. More than 70 scientists participated in the workshop from 13 countries, representing a large cross section of the climate and weather community. The two-and-a-half-day workshop featured six keynote talks and 27 oral and 44 poster presentations. The contributions to the first topic focused on assessing the quality of CPM simulations of the current climate in different regions and quantifying their benefits compared to large-scale models (LSMs) that have to parameter¬ize deep convection. Throughout the workshop, the importance of high-quality, high-resolution observational datasets was emphasized and new developments were presented in the fourth session In the fifth session, the benefit of applying CPMs in tropical regions was discussed. CPMs have been shown to improve the simulation of tropical cyclone dynamics, including eyewall features, wind speeds, and minimum pressure, that cannot be captured by LSMs. Collaborations and community building were iden¬tified as the most promising pathways to efficiently identify and resolve these challenges.