Christine Chiu - 613 Special Seminar

Affiliation: University of Reading
Event Date: Wednesday, August 20, 2014

Location: Bldg 33, H114, 3:30PM

3D cloud observations: Synergy between scanning radars and shortwave radiation measurements
Ground-based cloud observations have been primarily made from a vertically pointing view in the past. Consequently, cloud evolution and 3D structures must be derived based on certain assumptions, making it difficult to tackle cloud problems in a fully 3D situation. The new scanning cloud radars from the Atmospheric Radiation Measurement (ARM) Climate Research Facility provide a unique opportunity for characterizing detailed 3D cloud macro- and micro-physical properties. In this talk, we will show a new ENsemble ClOud REtrieval method (ENCORE) that combines scanning cloud radar and shortwave zenith radiances, using an iterative Ensemble Kalman Filter with a 3D radiative transfer forward model. We will focus on low-level cloud observations during the ARM Mobile Facility Azores and MAGIC (Marine ARM GPCI Investigation of Clouds) deployments, with a view to evaluating and better constraining model representations of aerosol-cloud-precipitation-radiation interactions.