Journal ArticleDOI
Imprint of Southern Ocean eddies on winds, clouds and rainfall
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In this article, the authors examined the atmospheric conditions associated with over 600,000 individual eddies in the Southern Ocean, using satellite data, and showed that ocean eddies locally affect near-surface wind, cloud properties and rainfall.Abstract:
Owing to the turbulent nature of the ocean, mesoscale eddies are omnipresent. The impact of these transitory and approximately circular sea surface temperature fronts on the overlying atmosphere is not well known. Stationary fronts such as the Gulf Stream have been reported to lead to pronounced atmospheric changes1, 2. However, the impact of transient ocean eddies on the atmosphere has not been determined systematically, except on winds and to some extent clouds3, 4, 5, 6. Here, we examine the atmospheric conditions associated with over 600,000 individual eddies in the Southern Ocean, using satellite data. We show that ocean eddies locally affect near-surface wind, cloud properties and rainfall. The observed pattern of atmospheric change is consistent with a mechanism in which sea surface temperature anomalies associated with the oceanic eddies modify turbulence in the atmospheric boundary layer. In the case of cyclonic eddies, this modification triggers a slackening of near-surface winds, a decline in cloud fraction and water content, and a reduction in rainfall. We conclude that transient mesoscale ocean structures can significantly affect much larger atmospheric low-pressure systems that swiftly pass by at the latitudes investigated.read more
Citations
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The Time-Scale-Dependent Response of the Wintertime North Atlantic to Increased Ocean Model Resolution in a Coupled Forecast Model
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The sea-air CO2 net fluxes in the South Atlantic Ocean and the role played by Agulhas eddies
Iole B.M. Orselli,Rodrigo Kerr,José Luiz Lima de Azevedo,Felippe Galdino,Moacyr Araujo,Carlos A. E. Garcia,Carlos A. E. Garcia +6 more
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Agulhas Ring Heat Content and Transport in the South Atlantic Estimated by Combining Satellite Altimetry and Argo Profiling Floats Data
Correlating extremes in wind and stress divergence with extremes in rain over the Tropical Atlantic
TL;DR: The International Ocean Vector Winds Science Team Workshop (2018 IOVWST) as discussed by the authors was held in Barcelona, Spain, from 24-26 April 2018, 24:26 April 2019
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Increased Eddy Activity in the Northeastern Pacific during 1993–2011
TL;DR: In this paper, the authors studied the long-term behaviors of eddy activity in the northeastern Pacific and the dynamic mechanism behind them, using the third version of the mesoscale eddy trajectory dataset released by Chelton and Schlax as well as other observation and reanalysis datasets.
References
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Satellite measurements reveal persistent small-scale features in ocean winds.
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Journal ArticleDOI
Horizontal dispersion of floatable particles in the vicinity of velocity singularities such as convergences
TL;DR: In this paper, the authors considered a linear velocity field consisting of the rates of stretching deformation and shearing deformation, vorticity, and divergence (or negative convergence), and showed that a group of foreign particles initially arranged in a circle surrounding a singularity will be deformed into an ellipse.
Journal ArticleDOI
A well‐calibrated ocean algorithm for special sensor microwave / imager
TL;DR: In this article, the authors describe an algorithm for retrieving geophysical parameters over the ocean from special sensor microwave/imager (SSM/I) observations, based on a model for the brightness temperature T(sub B) of the ocean and intervening atmosphere.
Journal ArticleDOI
Ocean Circulation Kinetic Energy: Reservoirs, Sources, and Sinks
Raffaele Ferrari,Carl Wunsch +1 more
TL;DR: In this paper, the authors focus on the physically different kinetic energy (KE) reservoirs of the circulation and their maintenance, dissipation, and possible influence on the very small scales representing irreversible molecular mixing.