Air-Sea Heat and Momentum Fluxes in the Southern Ocean

Bharti, Vidhi; Fairall, Christopher W.; Blomquist, Byron W.; Huang, Yi; Protat, Alain; Sullivan, Peter P.; Siems, Steven T.; Manton, Michael J.

doi:10.1029/2018JD029761

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Air-Sea Heat and Momentum Fluxes in the Southern Ocean

2019
By Bharti, Vidhi ; Fairall, Christopher W. ; Blomquist, Byron W. ; ...
Source: Journal of Geophysical Research: Atmospheres, 124(23), 12426-12443

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Journal Title:

Journal of Geophysical Research: Atmospheres
Personal Author:

Bharti, Vidhi ; Fairall, Christopher W. ; Blomquist, Byron W. ; Huang, Yi ; Protat, Alain ; ... More +

Bharti, Vidhi ; Fairall, Christopher W. ; Blomquist, Byron W. ; Huang, Yi ; Protat, Alain ; Sullivan, Peter P. ; Siems, Steven T. ; Manton, Michael J. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; PSL (Physical Sciences Laboratory)

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; PSL (Physical Sciences Laboratory) Less -
Description:

The Clouds, Aerosols, Precipitation, Radiation, and atmospherIc Composition Over the southeRn oceaN (CAPRICORN) experiment was carried out in March–April 2016 onboard R/V Investigator studying momentum (τ), sensible heat (Hs), and latent heat (Hl) fluxes over the Australian sector of the Southern Ocean including over one cyclonic cold‐core and one anticyclonic warm‐core mesoscale oceanic eddy. The turbulence‐based flux measurements obtained with the NOAA PSD flux system employing eddy covariance (EC) and inertial dissipation (ID) methods are compared with those obtained by the Coupled Ocean‐Atmosphere Response Experiment (COARE) 3.5 bulk model, and the neutral transfer coefficients are studied. The relative uncertainty between the turbulence‐based and COARE 3.5 estimates of τ, Hs, and Hl are 22%, 70%, and 26%, respectively, at 1‐hr time scale over the Southern Ocean. Further, the variability in bulk fluxes is investigated with respect to oceanic eddies, precipitation events, atmospheric stability, and extratropical cyclones encountered during the voyage. The main observed variability is an increase in significant wave height or γw (∼33%), τ (∼89%), Hs (∼187%), and Hl (∼79%) over the warm eddy as compared to average voyage values. During the passage of six extratropical cyclones, an increase in τ (∼62% average) and a decrease in Hs (∼235%) and Hl (∼79%) is noted in the warm sector, compared to prestorm conditions, but the pattern reverses behind the cold front.
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Cyclones Heat Flux
Source:

Journal of Geophysical Research: Atmospheres, 124(23), 12426-12443
DOI:

https://doi.org/10.1029/2018JD029761
Document Type:

Journal Article
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Antarctic Ocean
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urn:sha256:796a20b53a8c10916bb5c873974adf8cd1158c62f55e2ad70dec427574de2637
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https://repository.library.noaa.gov/view/noaa/27942/noaa_27942_DS1.pdf
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Air-Sea Heat and Momentum Fluxes in the Southern Ocean

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