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Dynamics of upwelling annual cycle in the equatorial Atlantic Ocean

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1002/2017GL072588· OSTI ID:1465347
 [1];  [2];  [3];  [4]
  1. National Taiwan Normal Univ., Taipei (Taiwan). Dept. of Earth Sciences; Academia Sinica, Taipei (Taiwan). Research Center for Environmental Change; University of Hawaii
  2. Univ. of Hawaii at Manoa, Honolulu, HI (United States)
  3. National Taiwan Normal Univ., Taipei (Taiwan). Dept. of Earth Sciences; Academia Sinica, Taipei (Taiwan). Research Center for Environmental Change
  4. Academia Sinica, Taipei (Taiwan). Research Center for Environmental Change
+ Show Author Affiliations
The annual upwelling is an important component of the equatorial Atlantic annual cycle. A simple theory is proposed using the framework of Zebiak-Cane (ZC) ocean model for insights into the dynamics of the upwelling annual cycle. It is demonstrated that in the Atlantic equatorial region this upwelling is dominated by Ekman processing in the west, whereas in the east it is primarily owing to shoaling and deepening of the thermocline resulting from equatorial mass meridional recharge/discharge and zonal redistribution processes associated with wind-driven equatorial ocean waves. This wind-driven wave upwelling plays an important role in the development of the annual cycle in the sea surface temperature of the cold tongue in the eastern equatorial Atlantic.
Research Organization:
Univ. of Hawaii, Honolulu, HI (United States)
Sponsoring Organization:
Ministry of Science and Technology (MOST); USDOE; USDOE Office of Science (SC)
Grant/Contract Number:
SC0005110
OSTI ID:
1465347
Alternate ID(s):
OSTI ID: 1374445
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 8 Vol. 44; ISSN 0094-8276
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (2)

Tropical Atlantic Response to Last Millennium Volcanic Forcing journal October 2018
Dynamics of Upwelling Annual Cycle in the Equatorial Pacific Ocean journal September 2019

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Related Subjects

58 GEOSCIENCES
Ekman pumping
Zebiak‐Cane model
annual cycle
equatorial upwelling
recharge oscillator