200 Variability in mixed layer top and transition layer top elevations during CINDY2011/DYNAMO/AMIE

Thursday, 3 April 2014
Golden Ballroom (Town and Country Resort )
Jennifer L. Davison, University of Louisville, Louisville, KY

One way to approach the CINDY2011/DYNAMO/AMIE goal of better understanding MJO initiation is to investigate the behavior of key structural features of the atmosphere under various meteorological conditions. Two such key structural features are the mixed layer and the transition (or shallow cloud) layer. Using Bragg Scattering Layer (BSL) analysis of S-band radar data from NCAR's S-Pol radar, which was situated at the Gan site, the tops of the mixed and transition layers were determined for each radar PPI scan between 5 and 9° elevation angle for all clear-air retrievals throughout the joint campaign. Comparison of these data with other measurements, such as sea-surface temperature, time of day, wind speed/direction, MJO phase, etc… can be used to better understand how MJO initiation comes about. Preliminary results of such data comparisons will be shown.
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