Abstract: The ECHAM-4 global climate model, forced by time-dependent ocean boundary conditions and CO2 concentrations, shows a substantial increase of precipitation in the Arctic during a simulation of the twentieth century. ...

Abstract: Simulations of present-day Arctic climate are assessed from suites of 1) 13 global atmosphere-only models from the Atmospheric Model Intercomparison Project (AMIP-II) and 2) 8 coupled atmosphere?ocean?ice models from the ...

Abstract: The state-of-the-art AOGCM simulations have recently (late 2004?early 2005) been completed for the Intergovernmental Panel on Climate Change (IPCC) in order to provide input to the IPCC?s Fourth Assessment Report (AR4). ...

Abstract: Climate projections at regional scales are in increased demand from management agencies and other stakeholders. While global atmosphere?ocean climate models provide credible quantitative estimates of future climate at ...

Abstract: Processes in the climate system that can either amplify or dampen the climate response to an external perturbation are referred to as climate feedbacks. Climate sensitivity estimates depend critically on radiative feedbacks ...

Abstract: Northern Eurasia, the largest land-mass in the northern extratropics, accounts for ?20% of the global land area. However, little is known about how the biogeochemical cycles, energy and water cycles, and human activities ...