A study of a CASP storm: Analysis of radar data |
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| Authors: | I Zawadzki P Zwack A Frigon |
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| Institution: | 1. Université du Québec à Montréal , Montréal, Québec, H3C 3P8;2. Department of Atmospheric and Oceanic Sciences , McGill University , 805 Sherbrooke Street West, Montréal, Quebec, H3A 2K6 |
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| Abstract: | Abstract The morphology and time evolution of a winter storm is studied using radar data taken during the Canadian Atlantic Storms Program (CASP). The vertical motions that generate the snow are derived from reflectivity measurements. The study reveals a banded structure in the precipitation pattern with ascending and descending air associated with the bands. Vertical velocities averaged over the radar‐covered area reach values close to 1 m s‐1 . The region of large‐scale uplifting moves horizontally at about half the horizontal air velocity. A persistent precipitation pattern results from the continuously renewed air within the uplifting region. |
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