The Air Quality Research Center at UC Davis is holding its second in a series of biennial conferences supported by the California Air Resources Board on advances in meteorology and climate modeling for air quality applications. This conference will interest those involved in research that utilizes meteorological and climatological data. The focus will be on the modeling and predicting regional climate and meteorology as it relates to air quality, with an emphasis on understanding what's “under the hood” of the models and how to improve them.