Dimensionless wave height (Equation II-2-22)

Height of the land barrier [length]

Energy-based significant wave height [length]

Stable wave height (Equation II-4-14) [length]

Fully developed wave height (Equation II-2-30) [length]

Dimensionless von Krmn's constant (approximately equal to 0.4). Also, *k *=

2π

wave number [length-1] defined as =

where L = wave length [length]

Parameter that represents the relative strength of thermal stratification effects

[length]

Dimensionless empirical exponents used in empirical wave predictions

The subscript 0 denotes deepwater conditions

Pressure at radius *r *of a storm [force/length2]

Central pressure in the storm [force/length2]

Ambient pressure at the periphery of the storm [force/length2]

Arbitrary radius [length]

Radius of curvature of the isobars [length]

Ratio of over water windspeed, *U*W to over land windspeed, *U*L as a function of over

land windspeed (Figure II-2-7)

Distance from the center of the storm circulation to the location of maximum wind

speed (Equation II-2-20) [length]

Rossby radius of deformation (Equation II-2-1) [length]

Amplification ratio (Figure II-2-8), ratio of wind speed accounting for effects of air-

sea temperature difference to wind speed over water without temperature effects

Duration [time]

Air temperature [deg C]

Limiting wave period (Equation II-2-39) [time]

Water temperature [deg C]

Time required for waves crossing a fetch (Equation II-2-35) [time]

Wind speed [length/time]

Estimated wind speed of any duration [length/time]

Cyclostrophic approximation to the wind speed [length/time]

II-2-70

Meteorology and Wave Climate

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