Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3115203w&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 15, CiteID L15203
Astronomy and Astrophysics
Astrophysics
19
Global Change: Climate Dynamics (3309), Hydrology: Geomorphology (1625), Oceanography: General: Dendrochronology, Meteorology And Atmospheric Dynamics: Paleoclimatology, Solar Physics, Astrophysics, And Astronomy: Solar Irradiance
Scientific paper
Correlation of geologic histories from 130 Alaskan glaciers with a record of solar variation suggests that multi-decadal to century-scale temperature variations in the North Pacific and Arctic sectors have been influenced by solar forcing over the past thousand years. Mountain glacier fluctuations are primarily a record of summer cooling and the composite glacial history from three climatic regions across Alaska shows ice expansions approximately every 200 years, compatible with a solar mode of variability. The modulating effects of the cold phases of the Pacific Decadal Oscillation and the Arctic Oscillation may, when in phase with decreased solar activity, serve to amplify cooling, forcing glacier advance.
Barclay David J.
Calkin Parker E.
D'Arrigo Rosanne D.
Villalba Ricardo
Wiles Gregory C.
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