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Daily Summary for 20 February 2007

Quick links:

Weather Summary — Flight Summary — Satellite Images — Surface Observations — Model Analyses — Radiosonde Soundings

Weather Summary

A weak system moved through the region during the day bringing light precip to southwestern Ontario, more heavy snow downwind of Lake Ontario (where they already have 11 feet of it!), and a mixed bag of clouds near Ottawa.

Click here for the CARE operations summary. (Word Document)

Flight Summary

Today's flight targeted the ~13:10 LT Ottawa overpass. C3VP sampled a region of cirrus cloud over a lower altostratus cloud deck northwest of Ottawa during today's A-train overpass. Several passes were made through the upper level cirrus and lower level mixed phase cloud decks. Significant aircraft icing occurred while porpoising through the lower level cloud deck. The Convair aircraft was inside the lower level cloud deck during the A-train overpass.

1715 UTC GOES visible image and CloudSat swath during aircraft operations courtesy of NRL:

Satellite Images

Images are taken every four hours beginning at 0045 UTC.

GOES-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.