Fig. 1.

The West Antarctic ice core composite record compared with SST and hemispheric mean surface air temperature for 1900–1999. (A) Time series of the annual mean and 5-year smoothed standardized ice core composite compared with B, observed JJA SST records for 20S-20N (dark solid lines) and 20S-60S (light dashed lines). (C) Also shown is the annual SH mean temperature record. The light-gray shading highlights the warm 1936–45 decade. The SH temperature record (37) and the Hadley SST2 dataset (21) were obtained from the web site of the Climatic Research Unit, University of East Anglia (Norwich, U.K.).