Aerosol-cloud-climate cooling overestimated by ship-track data

Author:

Glassmeier Franziska123ORCID,Hoffmann Fabian345ORCID,Johnson Jill S.6ORCID,Yamaguchi Takanobu34ORCID,Carslaw Ken S.6ORCID,Feingold Graham4ORCID

Affiliation:

1. Department of Geoscience and Remote Sensing, Delft University of Technology, P.O. Box 5048, 2600 GA Delft, Netherlands.

2. Department of Environmental Sciences, Wageningen University, P.O. Box 47, 6700 AA Wageningen, Netherlands.

3. Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO 80309, USA.

4. NOAA Chemical Sciences Laboratory, 325 Broadway, Boulder, CO 80305, USA.

5. Institut für Meteorologie, Ludwig-Maximilians-Universität, Theresienstrasse 37, 80333 München, Germany.

6. School of Earth and Environment, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK.

Abstract

Making tracks The magnitude of the effect of anthropogenic aerosols on the formation of clouds is an important unknown about how humans are affecting climate. Studies of stratocumulus cloud tracks that are formed by ship exhaust have been used to estimate the radiative impact of this process, but Glassmeier et al. now show that this approach overestimates the cooling effect of aerosol addition by up to 200%. These findings underscore the need to quantify stratocumulus cloud responses to anthropogenic aerosols to understand the climate system. Science , this issue p. 485

Funder

U.S. Department of Energy

Newton Fund

NOAA Research

Natural Environment Research Council

Royal Society

Nederlandse Organisatie voor Wetenschappelijk Onderzoek

The Branco Weiss Fellowship

CIRES, University of Colorado

Deutsche Forschungsgemeinschaft

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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