Montag, 15. November 2010

New cloud layer discovered


Today we performed one flight in the morning with similar weather conditions as the last days. We started at 10:00 local and flew again directly to the area near Ragged Point. The flight pattern started with a vertical profile up to 8000 ft followed by a horizontal leg in that height. Beeing up there we realized a thin cloud layer in the cloud top height of cumulus clouds. This layer has not been there the days before. We dropped ACTOS into this layer and followed the cloud for a while. The liquid water content (LWC) was between 0.1 and 0.3 g/cm^3. After few minutes this layer disappeared and we started chasing cumulus clouds again. They were highly variable and still growing, the maximum LWC exceeded 1 g/m^3 several times. The flight pattern probably looks very chaotic but obviously the pilots enjoyed the cloud chasing. We did it for a while until our flight time was almost over. Before flying back we made another horizontal leg below cloud base for comparison with ground measurements. On the way back to the airport we passed Ragged Point and Deebles Point again, best wishes to all the colleagues measuring there!

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