(Article of periodic en Anglais - 2009)

Document title

Solar arctic-mediated climate variation on multidecadal to centennial timescales : empirical evidence, mechanistic explanation, and testable consequences

Authors(s) and Affiliation(s)

SOON W.W.-H. (1) ;
(1) Harvard-Smithsonian Center for Astrophysics, Massachusetts, Cambridge, ETATS-UNIS


Soon (2005) showed that the variable total solar irradiance (TSI) could explain, rather surprisingly, well over 75% of the variance for the decadally smoothed Arctic-wide surface air temperature over the past 130 years. This paper provides additional empirical evidence for this physical connection, both through several newly published high-resolution paleo-proxy records and through robust climate-process modeling outputs. The A. proposes a mechanistic explanation, involving : 1) the variable strength of the Atlantic meridional overturning circulation (MOC) or thermohaline circulation (THC); 2) the shift and modulation of the Inter-Tropical Convergence Zone (ITCZ) rainbelt and tropical Atlantic ocean conditions; and 3) the intensity of the wind-driven subtropical and subpolar gyre circulation, across both the North Atlantic and North Pacific. The mechanism can also be compared and contrasted with 2 other promising Sun-climate connection scenarios via the decadal solar UV and TSI mechanisms reviewed in this paper


Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2009, vol. 30, no2 [pp. 144-184]

Bibliographic references : 11 p.

Collation : 4 fig.2 ap.



INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.247/0272-3646.30.2.144

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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