Science news

FMI's researchers publish about 350 peer-reviewed articles annually.

In Science News we publish current information about FMI's studies on the weather, the sea and the climate.

Regional impact of particulates difficult to predict using climate models, even when mapping is accurate

Regional impact of particulates difficult to predict using climate models, even when mapping is accurate

Even if particulate matter could be mapped perfectly in climate models, its impact on the climate would remain uncertain on the regional level.

Researchers made use of identical particulate mapping in two climate models, and found its impact on the global mean temperature consistent in both models. The climate impact varied considerably from region to region, however. For example, the effect of the particulates on sea ice was not consistent between the two models.

The climate models also differed significantly with regard to expected changes in precipitation and atmospheric circulation. Differences were locally constant, independent of the particulate mapping.

Further information:

Recearcher Kalle Nordling, Finnish Meteorological Institute, kalle.nordling@fmi.fit

Recearcher Joonas Merikanto, Finnish Meteorological Institute, joonas.merikanto@fmi.fi

Nordling, K., Korhonen, H., Räisänen, P., Alper, M. E., Uotila, P., O'Donnell, D., and Merikanto, J.: Role of climate model dynamics in estimated climate responses to anthropogenic aerosols, Atmos. Chem. Phys., 19, 9969–9987, https://doi.org/10.5194/acp-19-9969-2019, 2019.

https://www.atmos-chem-phys.net/19/9969/2019/acp-19-9969-2019.html


Science news archive