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Satellite Overpasses
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Previous Cloud Layer EXperiments
The Canadian CloudSat/CALIPSO Validation Project (C3VP)
CloudSat
CALIPSO
Cooperative Institute for Research in the Atmosphere (CIRA)
Colorado State University Department of Atmospheric Science
Daily Summary for 25 January 2007
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An arctic high moved over southern Ontario during the day, bringing the coldest air of IOP III with it. The high also succeeded at pushing all the mid- and upper level clouds out of the region. The cold air flowing over the still warm waters of the Great Lakes kicked off lake effect snow showers and squalls.
A view of the lake effect clouds from CARE at sunset. Pictures taken by Curtis Seaman.
Click here for the CARE operations summary. (Word Document)
Flight SummaryC3VP debated about flying into the lake effect snows which, under similar circumstances last week, avoided CARE during the aircraft operations. However, the beneficial NNW winds required for the squalls to hit CARE were not forecast to arrive until late in the evening - during the time the pilots needed to be grounded to prepare for tomorrow's CloudSat overpass flight. Thus, aircraft operations were cancelled for today.
Satellite ImagesGOES-12 IR courtesy of RAP @ UCAR
GOES-12 Visible (during daylight hours) and Near IR (night) albedo from CIRA.
GOES-12 IR (10.7 µm) brightness temperature from CIRA. The color scale begins at 0 °C with an increment of -10 °C between color changes.
GOES-12 experimental cloud phase from CIRA. Blue represents ice particles, red is liquid droplets above freezing and yellow represents supercooled liquid droplets. Gray areas are clear (no cloud) based on an IR cloud mask.
Surface ObservationsSurface METARs every 4 hours beginning at 00 UTC courtesy RAP @ UCAR
Model Analyses12 UTC Eta analysis of 500 mb winds
12 UTC Eta analysis of 500 mb heights and vorticity
Radiosonde Soundings12 UTC Maniwaki, QC
