Sharanya Majumdar, University of Miami

Influence of assimilating supplemental observations on tropical cyclone analyses and predictions

Michael J. Brennan, Daryl T. Kleist, Kate Howard


A series of recent papers has focused on the influence of assimilating supplementary aircraft-based observations on analyses and predictions of tropical cyclone track and structure. These observations include additional rawinsondes and dropwindsondes deployed by NOAA prior to a tropical cyclone making landfall in the United States. The impacts of assimilating the supplementary observations in NOAA's Global Forecast System have generally been positive, though often small. In addition to a summary of recent results, new diagnostic tools to investigate the role of the Hybrid Variational-Ensemble data assimilation scheme in treating the observations and carrying their impact forward will be presented.

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