Effects of Synoptic Surveillance on model forecasts for
Tropical Storm Barry.

Quicktime movie of AVN DLM wind model forecast
Quicktime movie of DLM wind data increment

Surveillance flights

August 2, 2001

August 3, 2001

August 4, 2001

Assessments for each forecast time at

August 2, 2001				18 Z
August 3, 2001	00 Z	06 Z	12 Z	18 Z
August 4, 2001	00 Z	06 Z	12 Z	18 Z
August 5, 2001	00 Z	06 Z	12 Z

Figure 1a. Track forecast errors for the no dropwindsonde (NO or NN) and the all dropwindsonde (AL) runs for the AVN, GFDL, and VBAR models for three Tropical Storm Barry synoptic surveillance missions.

Figure 1b. Track forecast improvements for the AVN, GFDL, and VBAR models for the three Tropical Storm Barry synoptic surveillance missions.

(a)
(b)

Figure 2. Forecast errors for the landfall of Tropical Storm Barry at Santa Rosa Beach, FL, in the (a) cross- and (b) along-track directions for the no dropwindsonde (NO or NN) and the all dropwindsonde (AL) runs for the AVN, GFDL, and VBAR models.

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