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Summer snow extent heralding of the winter North Atlantic Oscillation

Saunders, MA; Qian, BD; Lloyd-Hughes, B; (2003) Summer snow extent heralding of the winter North Atlantic Oscillation. Geophysical Research Letters , 30 (7) , Article 1378. 10.1029/2002GL016832. Green open access

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Abstract

[1] Winter climate over the North Atlantic and European sector is modulated by the North Atlantic Oscillation (NAO). We find that the summer extent of snow cover over northern North America and northern Eurasia is linked significantly (p < 0.01) to the upcoming winter NAO state. Summers with high/low snow extent precede winters of low/high NAO index phase. We suggest the linkage arises from the summer snow-associated formation of anomalous longitudinal differences in surface air temperature with the subpolar North Atlantic. Our findings indicate the seasonal predictability of North Atlantic winter climate may be higher and extend to longer leads than thought previously.

Type: Article
Title: Summer snow extent heralding of the winter North Atlantic Oscillation
Open access status: An open access version is available from UCL Discovery
DOI: 10.1029/2002GL016832
Publisher version: http://dx.doi.org/10.1029/2002GL016832
Language: English
Additional information: Copyright 2003 by the American Geophysical Union
Keywords: Climate variability, Predictability, Temperatures, Reanalysis, Anomalies, Update
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/8878
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