CLACE-4 Project Instruments and Data - Cloud Particle Imager

Michael Flynn and Keith Bower taking the opportunity to clean the windows in the cloud particle imager on a clear day.

CPI Images from a mostly mixed phase cloud on 12 March 2005. Images have been selected from among the many droplets also present. Ice crystals such as these tended to come several close together in time, with less drops during these periods. They also occured during the period while the cloud was quite polluted.

CPI Images from a mostly mixed phase cloud on 12 March 2005. Images have been selected from among the many droplets also present. Ice crystals such as these tended to come several close together in time, with less drops during these periods. They also occured during the period while the cloud was quite polluted.

CPI Images from a mostly mixed phase cloud on 12 March 2005. Images have been selected from among the many drops also present. Some drops are also shown here. Most of the crystals on this page show some degree of riming, that is drops have stuck to the ice crystal and frozen instantly.

CPI Images from a time period when no cloud is present at the site. These are wind blown particles re-suspended from the glacier below. Typically wind blown material appears much more rounded than cloud particles. It is also possible for wind blown material to be seen while the site is in cloud, and sometimes it also gets rimed making it more difficult to identify.

A selection of the best CPI images from the CLACE 3 project. The post processing proceedure makes it easier to select such examples from the very many less pretty particles which were observed during the entire project. The number in the bottom left of each image is the major dimension in micrometers.