We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
In situ Measurements of Momentum Fluxes in Typhoons.
- Authors
Potter, Henry; Graber, Hans C.; Williams, Neil J.; Collins, Clarence O.; Ramos, Rafael J.; Drennan, William M.
- Abstract
One of the scientific objectives of the U.S. Office of Naval Research-sponsored Impact of Typhoons on the Ocean in the Pacific (ITOP) campaign was improved understanding of air-sea fluxes at high wind speeds. Here the authors present the first-ever direct measurements of momentum fluxes recorded in typhoons near the surface. Data were collected from a moored buoy over 3 months during the 2010 Pacific typhoon season. During this period, three typhoons and a tropical storm were encountered. Maximum 30-min sustained wind speeds above 26 m s−1 were recorded. Data are presented for 1245 h of direct flux measurements. The drag coefficient shows evidence of a rolloff at wind speeds greater than 22 m s−1, which occurred during the passage of a single typhoon. This result is in agreement with other studies but occurs at a lower wind speed than previously measured. The authors conclude that this rolloff was caused by a reduction in the turbulent momentum flux at the frequency of the peak waves during strongly forced conditions.
- Subjects
TYPHOONS; UNITED States. Office of Naval Research; OCEAN-atmosphere interaction; WIND speed; TROPICAL storms; HURRICANES
- Publication
Journal of the Atmospheric Sciences, 2015, Vol 72, Issue 1, p104
- ISSN
0022-4928
- Publication type
Article
- DOI
10.1175/JAS-D-14-0025.1