Cirrus observations during MPACE

We will focus on retrieval of cloud optical properties derived from the aircraft-based Scanning-High Resolution Interferometer Sounder (S-HIS) measurements during the 2004 MPACE field campaign. Data will be compared to simultaneous measurements from the ground sites located at Barrow and Oliktok Point. The retrieval method inverts the S-HIS radiance observations, using data from the airborne lidar and radiosonde profiles, to get optical depth and effective radius. A combination of AERI and lidar measurements will be utilized for the ground-based comparison during aircraft overpasses. Results will be presented for aircraft sorties, which occurred during mostly cirrus conditions, on 17-18 October 2004.