Location map of Big Round Lake

A. Map of eastern North American Arctic, showing location of paleoclimate records and weather stations mentioned in text. AIC, Agassiz Ice Cap; BL, Bear Lake; BRD, Big Round Lake (this study); C2, Lake C2; CF8, Lake CF8; DIC, Devon Ice Cap; DL, Donard Lake; LT, Lake Tuborg; USL, Upper Soper Lake. B. Vertical air photo taken of the glacier and the proglacial stream that feed into BRD on September 1, 1960. Dashed line on glacier indicates 1990 extent, solid line indicates 2000 extent. C. Bathymetry map of BRD. Black dots are where measurements were taken, white dot in the central deep basin is core location