A new global reconstruction of temperature changes at the Last Glacial Maximum

摘要: Abstract. Some recent compilations of proxy data both on land and ocean (MARGO Project Members, 2009; Bartlein et al., 2011; Shakun 2012), have provided a new opportunity for an improved assessment the overall climatic state Last Glacial Maximum. In this paper, we combine these with ensemble structurally diverse art climate models which participated in PMIP2 project (Braconnot 2007) to generate spatially complete reconstruction surface air (and sea surface) temperatures. We test variety approaches, show that multiple linear regression performs well application. Our is significantly different more accurate than previous approaches obtain estimated global mean cooling 4.0 ± 0.8 °C (95% CI).