global carbon cycle
climate change risks and impacts
space observations of changes in land use and vegetation
global CO2 flux observing systems and greenhouse gas monitoring
carbon offsetting schemes
role of forestry in mitigating climate change
adaptation to climate change
Areas of expertise
My main areas of research are the global carbon cycle and the terrestrial biosphere, and how both interact and react to human activities. Human activities may alter them directly, by emitting CO2 from fossil fuel burning or deforestation or other forms of land-use change, or indirectly through man-made climate change. I have considerable expertise in advanced observation techniques, for example the use of data assimilation to infer sources and sinks of CO2 over land surfaces, using direct CO2 measurements and satellite data.
In addition to pure research, I am actively engaged in the design of climate offsetting through different forms of forest management, such as forest protection and conservation, or afforestation and bioenergy production. I believe reducing emissions of greenhouse gases can be done in a way that will bring considerable funds to sustainable forestry projects worldwide.
Languages (other than English)
Various interviews with radio and newspaper journalists. Also attended a course in science journalism in Germany.