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Leon Sherman

A disturbance of the wind field such as a hurricane inherently involves a hyperbolic point (analogous to a pressure col) in addition to the cyclonic-indraft point usually identified as the hurricane center. The entire hurricane (i.e., including the hyperbolic point) is not normally located by reconnaissance flights. Neither is the rain pattern of a hurricane over the open ocean normally included in reconnaissance reports. In this paper the complete observation of the fields of the wind and the weather to the best of our present abilities is suggested. Feasibility of these observations and possible research gains therefrom are discussed.

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Leon Sherman and Noel E. LaSeur

There are various reasons, both practical and theoretical, which make desirable the location of the hyperbolic point as well as the “eye” of a hurricane. The practical difficulty in the location of the hyperbolic point which stems from its generally being in an extensive area of very light winds is easily overcome by the use of smoke bombs. Several flights made during August and September of 1954 demonstrate this.

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