developing storms and appears to work as well as other models in mature storms. Consequently, this model

will be described in some detail here. In presently available hurricane models, wind fields are assumed to

have no memory and thus can be determined by only a small set of parameters at a given instant.

(4) In the Holland model, hurricane pressure profiles are normalized via the relationship

β'

(II-2-15)

where

(5) Holland showed that the family of β-curves for a number of storms resembled a family of

rectangular hyperbolas and could be represented as

β&1 ' exp

(II-2-16)

&*A*

β ' exp

(6) This leads to a representation for the pressure profile as

&*A*

(II-2-17)

which then leads to a gradient wind approximation of the form

1

&*A*

2

(II-2-18)

'

%

&

4

2

ρa r B

II-2-28

Meteorology and Wave Climate

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