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Title: Dynamics of upwelling annual cycle in the equatorial Atlantic Ocean

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.
Authors:
ORCiD logo [1] ; ORCiD logo [2] ; ORCiD logo [1] ; ORCiD logo [3]
  1. National Taiwan Normal Univ., Taipei (Taiwan). Dept. of Earth Sciences; Academia Sinica, Taipei (Taiwan). Research Center for Environmental Change
  2. Univ. of Hawaii at Manoa, Honolulu, HI (United States)
  3. Academia Sinica, Taipei (Taiwan). Research Center for Environmental Change
Publication Date:
Grant/Contract Number:
SC0005110
Type:
Accepted Manuscript
Journal Name:
Geophysical Research Letters
Additional Journal Information:
Journal Volume: 44; Journal Issue: 8; Journal ID: ISSN 0094-8276
Publisher:
American Geophysical Union
Research Org:
Univ. of Hawaii, Honolulu, HI (United States)
Sponsoring Org:
USDOE Office of Science (SC); Ministry of Science and Technology (MOST)
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; equatorial upwelling; Zebiak‐Cane model; Ekman pumping; annual cycle; recharge oscillator
OSTI Identifier:
1465347
Alternate Identifier(s):
OSTI ID: 1374445

Wang, Li-Chiao, Jin, Fei-Fei, Wu, Chau-Ron, and Hsu, Huang-Hsiung. Dynamics of upwelling annual cycle in the equatorial Atlantic Ocean. United States: N. p., Web. doi:10.1002/2017GL072588.
Wang, Li-Chiao, Jin, Fei-Fei, Wu, Chau-Ron, & Hsu, Huang-Hsiung. Dynamics of upwelling annual cycle in the equatorial Atlantic Ocean. United States. doi:10.1002/2017GL072588.
Wang, Li-Chiao, Jin, Fei-Fei, Wu, Chau-Ron, and Hsu, Huang-Hsiung. 2017. "Dynamics of upwelling annual cycle in the equatorial Atlantic Ocean". United States. doi:10.1002/2017GL072588. https://www.osti.gov/servlets/purl/1465347.
@article{osti_1465347,
title = {Dynamics of upwelling annual cycle in the equatorial Atlantic Ocean},
author = {Wang, Li-Chiao and Jin, Fei-Fei and Wu, Chau-Ron and Hsu, Huang-Hsiung},
abstractNote = {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.},
doi = {10.1002/2017GL072588},
journal = {Geophysical Research Letters},
number = 8,
volume = 44,
place = {United States},
year = {2017},
month = {4}
}