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


Quicktime movie of DLM wind analyses
Quicktime movie of DLM wind data initial increments


Assessments for each forecast time at
September 09, 2002 18 Z
September 10, 2002 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 GFS and GFDL models for the Tropical Storm Gustav synoptic surveillance mission.

Figure 1b. Track forecast improvements for the GFS and GFDL models for the the Tropical Storm Gustav synoptic surveillance mission.

(a)
(b)

Figure 2. Forecast errors for the landfall of Tropical Storm Gustav at Kelpy Cove, NS, in the (a) cross- and (b) along-track directions for the no dropwindsonde (NO or NN) and the all dropwindsonde (AL) runs for the GFS and GFDL models.

(a)
(b)

Figure 3. Forecast errors for the landfall of Tropical Storm Gustav at Rose-Blanche-Harbour Le Cou, NFLD, in the (a) cross- and (b) along-track directions for the no dropwindsonde (NO or NN) and the all dropwindsonde (AL) runs for the GFS and GFDL models.


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