Coupled Atmosphere–Ocean Wave Simulations under High Wind ConditionsSource: Monthly Weather Review:;2002:;volume( 130 ):;issue: 012::page 3087Author:Doyle, James D.
DOI: 10.1175/1520-0493(2002)130<3087:CAOWSU>2.0.CO;2Publisher: American Meteorological Society
Abstract: The impact of ocean surface waves on the structure and intensity of three tropical cyclones and a topographically forced bora event is investigated using a coupled atmosphere?ocean wave modeling system. The coupled system is capable of representing surface momentum fluxes that are enhanced due to young ocean waves in fetch-limited conditions, which yield surface roughness lengths that significantly depart from the conventional Charnock-type formulation. In general, the impact of ocean-wave-induced stress on the tropical cyclone central pressure was quite variable with ocean wave feedback resulting in changes ranging from 8 hPa deeper to 3 hPa shallower. The increased low-level stress due to the ocean waves reduced the near-surface winds by 2?3 m s?1, with local differences in excess of 10 m s?1, which directly led to a 10% reduction in the significant wave height maxima. The reduced significant wave heights in the coupled model were in closer agreement with observations for Tropical Cyclone Bonnie than for the uncoupled model. The tropical cyclone tracks were generally insensitive to ocean wave feedback effects. The boundary layer structure was found to be generally insensitive to large roughness enhancements associated with coupled ocean wave feedbacks for topographically forced high wind phenomena, such as the bora.
|
Collections
Show full item record
contributor author | Doyle, James D. | |
date accessioned | 2017-06-09T16:14:43Z | |
date available | 2017-06-09T16:14:43Z | |
date copyright | 2002/12/01 | |
date issued | 2002 | |
identifier issn | 0027-0644 | |
identifier other | ams-64051.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4205122 | |
description abstract | The impact of ocean surface waves on the structure and intensity of three tropical cyclones and a topographically forced bora event is investigated using a coupled atmosphere?ocean wave modeling system. The coupled system is capable of representing surface momentum fluxes that are enhanced due to young ocean waves in fetch-limited conditions, which yield surface roughness lengths that significantly depart from the conventional Charnock-type formulation. In general, the impact of ocean-wave-induced stress on the tropical cyclone central pressure was quite variable with ocean wave feedback resulting in changes ranging from 8 hPa deeper to 3 hPa shallower. The increased low-level stress due to the ocean waves reduced the near-surface winds by 2?3 m s?1, with local differences in excess of 10 m s?1, which directly led to a 10% reduction in the significant wave height maxima. The reduced significant wave heights in the coupled model were in closer agreement with observations for Tropical Cyclone Bonnie than for the uncoupled model. The tropical cyclone tracks were generally insensitive to ocean wave feedback effects. The boundary layer structure was found to be generally insensitive to large roughness enhancements associated with coupled ocean wave feedbacks for topographically forced high wind phenomena, such as the bora. | |
publisher | American Meteorological Society | |
title | Coupled Atmosphere–Ocean Wave Simulations under High Wind Conditions | |
type | Journal Paper | |
journal volume | 130 | |
journal issue | 12 | |
journal title | Monthly Weather Review | |
identifier doi | 10.1175/1520-0493(2002)130<3087:CAOWSU>2.0.CO;2 | |
journal fristpage | 3087 | |
journal lastpage | 3099 | |
tree | Monthly Weather Review:;2002:;volume( 130 ):;issue: 012 | |
contenttype | Fulltext |