Submitted at(UTC):
2007/05/20 06:21
Revised at(UTC): 2007/06/04 19:54
Today we ferried about 2 hours to a storm to the EAST that the STEM model had a region of dust carried up along the warm frontal region. It was a rather large area, which was well sampled by the G-V. We started with an overpass of the storm at 41 k feet, to obtain irradiance measurements above the clouds, which had a solid ci layer below us (we just barely hit the tops on the pass at 41 k feet). We followed by a pass at 27 k feet, at 21 kfeet, and at 10 k feet. We also did a profile descent to low altitudes at the southwest and north east parts of this storm. We were in ice crystals for most of the flight, with the only occasional encounters with supercooled liquid water in the lower parts of the storm. Some cloud base measurements were also obtained on the SW part of this system just before we departed. The storm appeared to be relatively clean. However, significant numbers of Ice Nuclei were found. In addition, increases in Black Carbon and CO were observed in the lower portions of the storm at the SW side. Should be a good case study of a warm frontal regions, with some dust, Black Carbon. Also should yield good comparisons between IN measurements and ice crystal concentrations.