Late-Holocene East Antarctic climate trends from ice-core and lake-sediment proxies

A high-resolution record of evaporation for the last similar to 650 years w as derived from the diatom-salinity signal preserved in a sediment core tak en from Ace Lake, Vestfold Hills (68 degrees 28'S, 78 degrees 11'E), Antarc tica. The seasonal oxygen isotope signal preserved in an ice core from Law Dome (66 degrees 44'S, 112 degrees 50'E), Antarctica, revealed a high-resol ution summer temperature record for the same time period. The two proxies s how highly correlated behaviour despite having significantly different clim atic response mechanisms and a large geographic separation. The correlation observed between proxies based on such differing processes and analytical methodologies provides not only a climate record for the past similar to 65 0 years that is both robust and regionally representative of coastal East A ntarctica but also confirmation of the utility of reconstructions using the se methods.