31 May 2018

BACCHUS consortium issues final summary for policy makers

In line with the project end of BACCHUS, the consortium compiled a final summary for policy makers on the BACCHUS results, future research needs in the field and the projects' relevance for the EU. Read more in the final policy report..

29 May 2018

Community assessment published

A community assessment of the importance of biogenic versus anthropogenic emissions for clouds and climate was published. Read more in the final document...

May 2018

Report BACCHUS gender equality and diversity

In the BACCHUS consortium, we made many efforts for a gender equal and diverse consortium. The results of the actions taken according as well as the evolution of the gender balance throught the project was summarized in the BACCHUS gender equality and diversity report.

January 2018

BACCHUS partners publish in Science and Scientific Reports

In January 2018 BACCHUS partners published articles in both, Science and Scientific Reports.
Jiwen Fan and Daniel Rosenfeld et al. published and article on "Substantial convection and precipitation enhancements by ultrafine aerosol particles" in Science. It has been long known that aerosol particle larger than about 0.1 micrometer serve as cloud condensation nuclei (CCN) and therefore have large impact on cloud properties and precipitation. The study revealed that when the CCN are scarce, as in pristine atmosphere such as in the Amazon, air pollution of ultrafine particles smaller than 0.05 micrometer can double the vertical winds that build deep convective clouds, thus inducing heavier downpours and possibly lightning from the polluted clouds. This means that little amount of emitted air pollution in the form of many ultrafine particles can have large impacts on precipitation and latent heating that drive the atmospheric weather systems, which have not been considered until now. This means that the formulation of numerical models for weather and climate prediction has to be revised to take the profound impacts of these tiny aerosols into account. Read more in the full article...

Erik Thomson (BACCHUS partner University of Gothenburg) and co-workers from BACCHUS partner J.W. Goethe University in Frankfurt, DE published "Intensification of ice nucleation observed in ocean ship emissions," in Nature's Scientific Reports. The report summarizes measurements of ice nucleating particles observed from ships transiting the Port of Gothenburg, Sweden. Direct comparisons to the clean background aerosol show that the sampled shipping emissions have enhanced ice nucleating properties. The observations connect with a previous BACCHUS modeling study by Possner et al. 2017, which illustrates such observations might have implications for environments with low particle concentrations and non-linear aerosol cloud feedbacks, like the Arctic. Read more in the full article...

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