Eddy impacts on the Florida Current

E. Frajka-Williams, William E Johns, C. S. Meinen, Lisa Beal, S. A. Cunningham

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The Gulf Stream in the Atlantic carries warm water northwards and forms both the return closure of the subtropical gyre as well as the upper limb of the meridional overturning circulation. Recent time series recorded east of the Bahamas at 26°N indicate that from May 2009 to April 2011, in contrast with past observations, the northward flowing Antilles Current covaried with the Gulf Stream in the Florida Straits-the Florida Current-even though the Florida and Antilles Currents are separated by banks and islands spanning 150 km. The peak-to-trough amplitude of transport variations during this period was 15×106m3 s-1 for the Florida Current and 12×106m3 s-1 for the Antilles Current, at time scales of 50 days to a year. From satellite observations, we show that the fluctuations in both the Florida and Antilles Currents between May 2009 and April 2011 are driven by eddy activity east of the Bahamas. Since the Florida Current time series is a critical time series for the state of the oceans, and often compared to climate models, this newly identified source of variability needs careful consideration when attributing the variability of the Florida Current to changes in the larger-scale circulations (e.g., gyre and overturning) or wind forcing.

Original languageEnglish (US)
Pages (from-to)349-353
Number of pages5
JournalGeophysical Research Letters
Volume40
Issue number2
DOIs
StatePublished - Jan 28 2013

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eddy
vortices
time series
gyre
Bahamas
wind forcing
meridional circulation
Gulf Stream
warm water
limb
strait
climate modeling
trough
timescale
ocean
straits
climate models
satellite observation
limbs
troughs

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geophysics

Cite this

Frajka-Williams, E., Johns, W. E., Meinen, C. S., Beal, L., & Cunningham, S. A. (2013). Eddy impacts on the Florida Current. Geophysical Research Letters, 40(2), 349-353. https://doi.org/10.1002/grl.50115

Eddy impacts on the Florida Current. / Frajka-Williams, E.; Johns, William E; Meinen, C. S.; Beal, Lisa; Cunningham, S. A.

In: Geophysical Research Letters, Vol. 40, No. 2, 28.01.2013, p. 349-353.

Research output: Contribution to journalArticle

Frajka-Williams, E, Johns, WE, Meinen, CS, Beal, L & Cunningham, SA 2013, 'Eddy impacts on the Florida Current', Geophysical Research Letters, vol. 40, no. 2, pp. 349-353. https://doi.org/10.1002/grl.50115
Frajka-Williams E, Johns WE, Meinen CS, Beal L, Cunningham SA. Eddy impacts on the Florida Current. Geophysical Research Letters. 2013 Jan 28;40(2):349-353. https://doi.org/10.1002/grl.50115
Frajka-Williams, E. ; Johns, William E ; Meinen, C. S. ; Beal, Lisa ; Cunningham, S. A. / Eddy impacts on the Florida Current. In: Geophysical Research Letters. 2013 ; Vol. 40, No. 2. pp. 349-353.
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