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A CIRCULARLY SYMMETRIC PRIMITIVE-EQUATION MODEL OF TROPICAL CYCLONES AND ITS RESPONSE TO ARTIFICIAL ENHANCEMENT OF THE CONVECTIVE HEATING FUNCTIONS

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  • 1 National Hurricane Research Laboratory, Environmental Research Laboratories, NOAA, Miami, Fla.
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Abstract

Simulations of the natural (unmodified) evolution of tropical cyclones with a circularly symmetric model suggest that seeding of hurricanes with silver iodide at radii greater than that of the surface wind maximum might be more effective in decreasing the surface wind maximum than seedings at or within the wind maximum. Seeding simulations with the model strongly suggest that the model storm responds in the sense anticipated. On the other hand, simulated seedings at radii less than that of the surface wind maximum produce temporary increases in the strength of the maximum. However, termination of the seeding is followed by a rapid recovery of the modified storm to a state close to that of the control.

Abstract

Simulations of the natural (unmodified) evolution of tropical cyclones with a circularly symmetric model suggest that seeding of hurricanes with silver iodide at radii greater than that of the surface wind maximum might be more effective in decreasing the surface wind maximum than seedings at or within the wind maximum. Seeding simulations with the model strongly suggest that the model storm responds in the sense anticipated. On the other hand, simulated seedings at radii less than that of the surface wind maximum produce temporary increases in the strength of the maximum. However, termination of the seeding is followed by a rapid recovery of the modified storm to a state close to that of the control.

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