Greenhouse Gas Fluxes and Earth System Feedbacks
Enhancing knowledge of GHG dynamics within human and environmental systems, to provide a solid basis for estimation of regional and global climate feedback processes taking human pressure across ecosystems into account.
Mitigating the GHG emissions, by protecting climate regulating services is one of the action necessary for reducing the climate risks. Increased pressure on ecosystems deriving from human activities across terrestrial, marine and freshwater ecosystems can potentially increase emissions threatening climate regulating services, as well as GHG exchange.
Through co-production workshops we wish to bring the human perspectives, pressures and impact into a holistic system approach. We wish to develop tools to identify and visualize human footprints and a tool to identify and mitigate pressures that human induce across ecosystems.
We wish to enhance knowledge of the effects from a changing climate and increasing frequency of extreme events at high northern latitudes on terrestrial GHG exchanges and C-cycle. We will seek a better understanding of both short- and long-term responses, by experimental and observational approaches, remote sensing, data assimilation and process-based ecosystem modelling.
We wish to improve the understanding of the processes driving high-latitude freshwater systems-atmosphere fluxes of GHGs, as well as the lateral transport, transformation of carbon and nutrient loads along the land-to-ocean aquatic continuum, to reduce the uncertainties in GHG budgets and trends at national, regional and continental scales
In this way we wish to identify major feedbacks related to climate change and human induced pressures and impacts.
We wish to enhance the understanding of air-sea exchange of GHG in ocean and coastal areas affected by sea ice and glacier runoff and riverine inputs. Notably, we plan to review the Arctic Ocean carbon budget in Earth System Models using an improved parametrisation air-sea exchange and, accounting for air-ice and coastal shelf exchange processes. Thanks to models and new observations, we will evaluate the feedbacks of the Arctic Ocean CO2 sink to ongoing climate change and assess the future Arctic CO2 sink.
We wish to enhance understanding of feedback processes on the global scale, through the implementation of improved process understanding into an Earth system modelling framework. Particular focus will be on response of GHG cycles from extreme conditions. To understand the relative roles and interactions between different feedbacks and different timescales and provide improved projections (including extreme events) and scenarios toward stabilized global temperatures.