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34?km2. In some areas these moss banks are up to 5000?years old (Fenton, 1980; Fenton & Smith, 1982). Between 1947 and 1995, air temperatures were recorded using a http://www.selleckchem.com/products/ABT-737.html standard meteorological station on Signy Island (60.7oS, 45.6oW). Orcadas station (60.7��S 44.7��W) on Laurie Island is located 51?km east of Signy Island and has maintained a daily temperature record since 1903 (excluding1951�C1956 and 1975) (Zazulie et?al., 2010). During the overlapping data periods the correlation between the annual daily mean temperatures recorded at Signy Island and Orcadas station was very strong (Pearson coefficient?=?0.98) and the mean difference in annual temperature small (mean?=?0.2?��C, SD?=?0.4?��C). Hence, the Orcadas Island data were used here to provide a century-long local temperature record. No recent rainfall data are available for Signy Island, however, daily measurements (>?70% days recorded) of precipitation http://www.selleck.cn/products/Methazolastone.html have been made at Orcadas Station since 1960 (Servicio Meteorol��gico Nacional, Buenos Aires, Argentina). Mean annual temperature has increased significantly at Orcadas Station on Laurie Island since the beginning of the Twentieth Century, during both summer (November�CMarch) and winter (April�COctober) (Fig.?2a; Linear Model (GLM), P? http://www.selleckchem.com/products/Nutlin-3.html to allow the detailed 14C stratigraphy to be undertaken. The cores were transported frozen to the UK for analysis. The especially well-preserved Site B core through which individual vertically aligned moss fibres could be identified for up to 100?mm length was selected for high-density ��bomb-spike�� radiocarbon dating. Eight samples 2?mm in width (incorporating under 1?year of growth) were analysed over the most modern 150?mm of accumulation, and due to the similar nature of the fibres it was assumed that sections from shoots within a core section have similar ages (Clarke et?al., 2012). The Site A, C and D cores underwent conventional radiocarbon dating at intervals dispersed along their lengths including replicate analysis of three samples from each of Sites A and D.