CICERO - Center for International Climate Research
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ACCRI CIC-MOD

The objective of the ACCRI CIC-MOD project is to investigate how aviation emissions in different regions affect the atmosphere and climate on regional and global scales.

The objective of the ACCRI CIC-MOD project is to investigate how aviation emissions in different regions affect the atmosphere and climate on regional and global scales.

Aviation is a rapidly growing sector. The sector has a complex impact on climate because of the broad set of species emitted. These provide both warming and cooling contributions to temperature change on different temporal and spatial scales. The climate impact of several species can be strongly localised and may depend significantly on where the emissions occur.

In a policy context, climate impacts of different activities are commonly aggregated and presented in terms of globally averaged measures. Such measures are useful tools for placing impacts on a common scale, but they give no information about the underlying distribution. Strongly localised impacts may be hidden in global-mean measures, but can still have an important effect on climate.

In the ACCRI CIC-MOD project we use various modelling tools to explore how aviation emissions in different regions affect the atmosphere and climate on regional and global scales. We also look at options for including information about localised impacts in globally or regionally averaged measures. The project runs until July 2015 and is financed by the US Federal Aviation Administration and the US Department of Transportation through the Aviation Climate Change Research Initiative (ACCRI).