Physics
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3419603v&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 19, CiteID L19603
Physics
14
Oceanography: Physical: Air/Sea Interactions (0312, 3339), Oceanography: Physical: Surface Waves And Tides (1222), Atmospheric Processes: Ocean/Atmosphere Interactions (0312, 4504), Atmospheric Processes: Boundary Layer Processes, Atmospheric Processes: Turbulence (4490)
Scientific paper
The stress and drag at the surface of the ocean are crucial parameters for both short term forecasting and the modeling of long-term global climate trends. However, the partition between viscous, turbulent, and wave stresses, and in particular the effects of airflow separation are not well understood. We present direct measurements of the velocity in the airflow above wind-generated waves. We observe intermittent separation of the viscous sublayer past the crest of the wind waves leading to dramatic along-wave variability in the surface viscous tangential stress. These results hold for wind speeds that would normally be considered low to moderate. These viscous stress measurements in the airflow above the wavy surface, and within the separated region are, to the best of the authors' knowledge, the first of this kind.
Misra S. K.
Saxena G.
Veron Fabrice
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