Temperature response in the Altai region lags solar forcing

Details Temperature response in the Altai region lags solar forcing Temperature response in the Altai region lags solar forcing

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3601808e&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 1, CiteID L01808

Physics

14

Atmospheric Processes: Paleoclimatology (0473, 4900), Paleoceanography: Ice Cores (0724), Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513), Geochemistry: Stable Isotope Geochemistry (0454, 4870)

Scientific paper

The role of the sun on Earth's climate variability is still much debated. Here we present an ice core oxygen isotope record from the continental Siberian Altai, serving as a high-resolution temperature proxy for the last 750 years. The strong correlation between reconstructed temperature and solar activity suggests solar forcing as a main driver for temperature variations during the period 1250-1850 in this region. The precisely dated record allowed for the identification of a 10-30 year lag between solar forcing and temperature response, underlining the importance of indirect sun-climate mechanisms involving ocean-induced changes in atmospheric circulation. Solar contribution to temperature change became less important during industrial period 1850-2000 in the Altai region.

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