Spatial variability in the European winter precipitation δ18O-NAO relationship: Implications for reconstructing NAO-mode climate variability in the Holocene

Details Spatial variability in the European winter precipitation δ18O-NAO relationship: Implications for reconstructing NAO-mode climate variability in the Holocene Spatial variability in the European winter precipitation δ18O-NAO relationship: Implications for reconstructing NAO-mode climate variability in the Holocene

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3504709b&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 4, CiteID L04709

Physics

12

Atmospheric Processes: Climate Change And Variability (1616, 1635, 3309, 4215, 4513), Atmospheric Processes: Mesoscale Meteorology, Atmospheric Processes: Precipitation (1854), Geochemistry: Stable Isotope Geochemistry (0454, 4870), Atmospheric Processes: Paleoclimatology (0473, 4900)

Scientific paper

This paper investigates the links between precipitation δ 18O and the North Atlantic Oscillation (NAO) on decadal timescales to identify the optimum locations within Europe at which to compile δ 18O-based proxy records of past NAO variability. δ 18O is a commonly used paleoclimate (rainfall and temperature) proxy preserved in natural archives including stalagmites, ice cores, tree rings, and lake sediments. Precipitation δ 18O data (δ 18Op), compiled from Global Network of Isotopes in Precipitation (GNIP) stations in the North Atlantic sector reveal the direction and strength of the δ 18Op-NAO relationship in mid-latitude, high-latitude, and Mediterranean Europe. The highly significant, positive δ 18Op-NAO relationship in central Europe is attributed to the strong control of air temperature on δ 18Op in this region. The δ 18Op-NAO relationship is strongly negative at high-latitude GNIP sites and weak at Mediterranean sites. Decadal-scale solar irradiance variations correlate with winter δ 18Op at eight mid-latitude sites.

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