Abstract: Geologic studies provide a valuable perspective on the importance of greenhouse forcing for climate change. On both Pleistocene and tectonic time scales, changes in climate are positively correlated with greenhouse gas ...

Abstract: There have been numerous attempts to propose past warm time periods as ?analogs? for a future greenhouse warming. In this paper it is argued that, although paleoclimate studies may provide important insights into process ...

Abstract: The principal results of studies on historical climate change from A.D. 1000 to the present in China are reviewed. The studies are based on analysis of local annals and court records. After discussing the methodology of ...

Abstract: A number of climate model predictions indicate that the global average temperature should rise another 0.1°?0.3°C in the next 10?15 yr, thereby rising above the noise level of natural variability. However, volcanic eruptions ...

Abstract: The ECHAM-1 T21/LSG coupled ocean?atmosphere general circulation model (GCM) is used to simulate climatic conditions at the last interglacial maximum (Eemian, 125 kyr BP). The results reflect the expected surface temperature ...

Abstract: The Sensitivity of a linear two dimensional Energy Balance Model (EBM) to altered surface albedo and insolation over the last 18 000 years is compared to simulators made with the NCAR Community Climate Model (CCM). The ...

Abstract: Climate records over the last millennium place the twentieth-century warming in a longer historical context. Reconstructions of millennial temperatures show a wide range of variability, raising questions about the reliability ...