Mechanism study of the ENSO and southern high latitude climate teleconnections

LDEO Publication: 
Publication Type  Journal Article
Year of Publication  2002
Authors  Liu, J. P.; Yuan, X. J.; Rind, D.; Martinson, D. G.
Journal Title  Geophysical Research Letters
Volume  29
Issue  14
Pages  -
Journal Date  Jul 15
ISBN Number  0094-8276
Accession Number  ISI:000178964600026
LDEO Publication Number  6330
Key Words  antarctic circumpolar wave; sea-ice extent; temperature; variability; oscillation; winter; ocean

[1] Evidence of El Nino-Southern Oscillation (ENSO) teleconnections in the southern high latitude climate has been identified, although the mechanisms that might lead to such far-reaching teleconnections remain unresolved. Here we propose one such mechanism-the regional mean meridional atmospheric circulation (the regional Ferrel Cell)-responsible for the covariability of the ENSO and Antarctic Dipole (ADP; a predominant interannually-varying signal in the southern high latitudes). It is found that the altered storm tracks associated with the ENSO variability influence the regional Ferrel Cell indirectly by changing the meridional eddy heat flux divergence and convergence, and shifting the latent heat release zone. The changes of the regional Ferrel Cell then influence the southern high latitude climate by modulating the mean meridional heat flux.


610MVTimes Cited:11Cited References Count:23

URL  <Go to ISI>://000178964600026
DOI  Doi 10.1029/2002gl015143