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- Title
Coastal Zone Surface Stress with Stable Stratification.
- Authors
Mahrt, L.; Andreas, Edgar L; Edson, James B.; Vickers, Dean; Sun, Jielun; Patton, Edward G.
- Abstract
Summertime eddy correlation measurements from an offshore tower are analyzed to investigate the dependence of the friction velocity for stable conditions on the mean wind speed V, air-sea difference of virtual potential temperature δθ υ, and nonstationary submeso motions. The quantity δθ υ sometimes exceeds 3°C, usually because of the advection of warm air from land over cooler water at this site. Thin stable boundary layers result. Unexpectedly, does not depend systematically on the stratification δθ υ even for weak winds. For weak winds, increases systematically with increasing submeso variations of the wind. The relationship for a given V is greater in nonstationary conditions. Additionally, this study examines as a function of wind direction. The relationship appears to be affected by swell direction for weak winds and advection from land for short fetches.
- Subjects
OCEAN temperature; STRAINS &; stresses (Mechanics); EDDY flux; FRICTION velocity; ADVECTION
- Publication
Journal of Physical Oceanography, 2016, Vol 46, Issue 1, p95
- ISSN
0022-3670
- Publication type
Article
- DOI
10.1175/JPO-D-15-0116.1