A Richardson Number criterion for the air-sea interface |
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Authors: | John A T Bye |
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Institution: | (1) Flinders Institute for Atmospheric and Marine Sciences, The Flinders University of South Australia, 5042, South Australia, Australia |
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Abstract: | It is shown that the observationally determined roughness relation z
0 = u
*
2/g in which g is the acceleration of gravity, u
*, is the friction velocity in air, and = 0.0185 (Wu, 1982) for the wind profile over the sea surface relative to the surface current, is consistent with the existence of a Richardson Number criterion at the air-sea interface in which the critical Richardson Number, Ric = 1, such that all the shear energy is converted into potential energy. |
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