Premium
Coupled ocean‐atmosphere response to north tropical Atlantic SST: Tropical Atlantic dipole and ENSO
Author(s) -
Wu Lixin,
He Feng,
Liu Zhengyu
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2005gl024222
Subject(s) - tropical atlantic , climatology , intertropical convergence zone , atmosphere (unit) , tropical cyclone , sea surface temperature , environmental science , subtropical indian ocean dipole , oceanography , el niño southern oscillation , atlantic equatorial mode , anomaly (physics) , boreal , geology , tropics , walker circulation , indian ocean dipole , atmospheric sciences , atlantic multidecadal oscillation , geography , physics , meteorology , ecology , precipitation , biology , paleontology , condensed matter physics
The coupled ocean‐atmosphere response to changes of the north tropical Atlantic (NTA) SST is investigated using a coupled ocean‐atmosphere general circulation model. The model explicitly demonstrates that a NTA SST anomaly can organize an inter‐hemispheric SST dipole in boreal spring over both the tropical Atlantic and eastern tropical Pacific primarily through a coupled wind‐evaporative‐SST (WES) feedback. While the tropical Atlantic dipole eventually decays in summer and fall, the eastern tropical Pacific dipole subsequently evolves into an ENSO‐like pattern through the seasonal migration of the ITCZ and coupled ocean‐atmosphere feedbacks.