CCN Estimation from Space This research focuses on estimating Cloud Condensation Nuclei (CCN) concentrations using space-borne lidar data. India's Smog Crisis This research focuses on estimating Cloud Condensation Nuclei (CCN) concentrations using space-borne lidar data. Dust-Ice cloud-Precipitation Interactions This research focuses on estimating Cloud Condensation Nuclei (CCN) concentrations using space-borne lidar data.