Articles | Volume 14, issue 12
Clim. Past, 14, 1893–1913, 2018
https://doi.org/10.5194/cp-14-1893-2018
Clim. Past, 14, 1893–1913, 2018
https://doi.org/10.5194/cp-14-1893-2018

Research article 11 Dec 2018

Research article | 11 Dec 2018

A stalagmite test of North Atlantic SST and Iberian hydroclimate linkages over the last two glacial cycles

Rhawn F. Denniston et al.

Data sets

Global Precipitation Climatology Center data Deutscher Wetter Dienst (DWD) http://gpcc.dwd.de

Hurrell North Atlantic Oscillation (NAO) Index Cliamte Data guide https://climatedataguide.ucar.edu/climate-data/hurrell-north-atlantic-oscillation-nao-index-pc-based

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Short summary
The sediment deposited off the coast of Portugal includes the remains of marine organisms and pollen washed to sea from Iberia. Analysis of both the pollen and the ocean sediments has revealed that the type and density of vegetation on land changed in concert with shifts in ocean temperature over centuries to tens of millennia. Proxies for climate in Portuguese stalagmites from the last two glacial periods show precipitation was reduced when sea surface temperatures fell.