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Summary The problem of climate change requires to attribute observed climate variations to natural sources of variability and anthropogenic forcing factors. Climate variability from the decadal over centennial to the millennial time scales and the transitions from glacials to interglacials are determined by strong nonlinear interactions between the changes in the incoming solar radiation, its absorption...
Summary Internally generated climate variability on decadal to centennial time scales was studied with a hierarchy of climate models, including global as well as regional models. The analyses of long-term model integrations over 1000 years with global models of different complexity showed their potential to generate interannual to interdecadal variability without external forcing. Furthermore, the...
Remote sensing offers great potential for detecting changes of the thermal state of permafrost and active layer dynamics in the context of Arctic warming. This study presents a comprehensive feasibility analysis of satellite-based permafrost modeling for a typical lowland tundra landscape in the Lena River Delta, Siberia. We assessed the performance of a transient permafrost model which is forced...
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