Cd. Charles et al., CLIMATE CONNECTIONS BETWEEN THE HEMISPHERE REVEALED BY DEEP-SEA SEDIMENT CORE ICE CORE CORRELATIONS, Earth and planetary science letters, 142(1-2), 1996, pp. 19-27
Correlation of Southern Ocean deep sea sediment core records with ice
core records of polar climate delineates with unprecedented detail the
relationship between high latitude climate and the ocean's thermohali
ne circulation over the last 80,000 years. Our observations suggest th
at, while North Atlantic Deep Water variability manifests itself clear
ly in Southern Ocean nutrient proxy records over periods as short as 5
00 yr, this deep water variability did not promote a direct link betwe
en climate variability in the high latitudes of the two hemispheres on
millennial timescales. In particular, the proxy records indicate that
, on average, northern hemisphere climate fluctuations lagged those of
the southern hemisphere by 1500 yr.