The research group covers a broad range of topics within the atmospheric sciences. We are primarily a modelling group, studying radiative forcing of the climate system, and the role of gases, aerosols and clouds.
About the research group
Research topics include the climate response across different time scales (rapid adjustments and slow response), climate sensitivity, drivers of precipitation changes under a warming climate, turbulence processes in the lower atmosphere, and extreme events. Furthermore, we focus on Arctic climate change, climate effects of forestry and forest changes, and long-range transport of short lived climate forcers (in particular black carbon). We also develop, evaluate and apply different metrics for comparing emission sectors and regions.
Our methods include both the use of observational data and modelling, ranging from global earth system models to fine-scale convection-resolving models. The chemistry transport model, OsloCTM, developed in collaboration with the University of Oslo and currently in its third major version, is an important research tool at CICERO.
Members of the group
AMMONIA: Climate and environmental impacts of green ammonia (NH3)
The development of green ammonia (NH3) has recently gained wide interest due to its potential to decarbonize ammonia production and as a carbon-free solution for energy storage and transportation. Green ammonia production is purely based on renewable energy sources and no carbon is associated with its use, e.g. as a chemical fertilizer, or when ammonia is combusted in an engine. However, the production and use of ammonia come with other climate and environmental challenges due to its alteration of the Earth’s nitrogen cycle.
Transport | Renewable energy | Energy consumption
CN-coESM - Permafrost, wildfire, climate change processes, interactions, and feedbacks: co-development of Earth System Models between China and Norway
Arctic-boreal regions are warming at a much faster rate than the global mean. Arctic-boreal ecosystems combined are the largest reservoirs of terrestrial carbon and have long snow covered seasons. As a result, processes involved in these ecosystems have a high significance for global climate.
Methane | Climate Models
ReGame: Reliable global methane emissions estimates in a changing world
In REGAME we will update chemistry transport models (FLEXPART, OsloCTM) to include the kinetic isotope effect (KIE) of methane (CH4), enabling better constraints on the CH4 budget (KIE is dependent on source/ sink). We will update the atmospheric inversion framework FLXINVERT to include novel use of satellite CH4 fields (Sentinel 5P). This will include significant changes to FLEXINVERT, which will also be applicable to other satellite data e.g. carbon dioxide (co₂) and improve the model capabilities to handle large data fields in general. With these upgrades we assess CH4 emissions from the major sources (wetlands, biomass burning, anthropogenic) at the global scale using all available data (e.g. ICOS, NOAA data, data on ebas.nilu.no). This data includes measurements from the Zeppelin Observatory in the Arctic, to Troll in Antarctica, i.e. from pole-to-pole.