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A teleconnection between Atlantic sea surface temperature and eastern and central North Pacific tropical cyclones
Author(s) -
Patricola Christina M.,
Saravanan R.,
Chang Ping
Publication year - 2017
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 - 10.1002/2016gl071965
Subject(s) - teleconnection , sea surface temperature , climatology , tropical atlantic , tropical cyclone , atlantic equatorial mode , african easterly jet , geology , oceanography , predictability , walker circulation , tropical wave , atlantic multidecadal oscillation , el niño southern oscillation , environmental science , physics , quantum mechanics
The El Niño–Southern Oscillation (ENSO) is a major source of seasonal tropical cyclone (TC) predictability in both local and remote ocean basins. Unusually warm eastern‐central equatorial Pacific sea surface temperature (SST) during El Niño tends to enhance eastern and central North Pacific (ECNP) TCs and suppress Atlantic TCs. Here we demonstrate that Atlantic SST variability likewise influences remote TC activity in the eastern‐central Pacific through a Walker Circulation‐type response analogous to the ENSO‐Atlantic TC teleconnection, using observations and 27 km resolution tropical channel model (TCM) simulations. Observed and simulated ECNP TC activity is reduced during the positive Atlantic Meridional Mode (AMM), which is characterized by warm northern and cool southern tropical Atlantic SST anomalies, and vice versa during the negative AMM. Large ensembles of TCM simulations indicate that SST variability, rather than internal atmospheric variability, drives extreme ECNP hurricane seasons.