Articles | Volume 20, issue 17
https://doi.org/10.5194/acp-20-10231-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-20-10231-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
04 Sep 2020
Research article |
| 04 Sep 2020
| 04 Sep 2020
A global model–measurement evaluation of particle light scattering coefficients at elevated relative humidity
María A. Burgos
CORRESPONDING AUTHOR
Department of Environmental Science, Stockholm University, Stockholm, Sweden
Bolin Centre for Climate Research, Stockholm, Sweden
Elisabeth Andrews
Cooperative Institute for Research in Environmental Studies, University of Colorado, Boulder, Colorado, USA
Gloria Titos
Andalusian Institute for Earth System Research, University of Granada, Granada, Spain
Angela Benedetti
European Centre for Medium-Range Weather Forecasts, Reading, UK
Huisheng Bian
NASA/Goddard Space Flight Center, Greenbelt, Maryland, USA
Joint Center for Earth Systems Technology, University of Maryland, Baltimore County, Maryland, USA
Virginie Buchard
NASA/Goddard Space Flight Center, Greenbelt, Maryland, USA
GESTAR/Universities Space Research Association, Columbia, Maryland, USA
Gabriele Curci
Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell'Aquila, L'Aquila, Italy
Centre of Excellence CETEMPS, Università degli Studi dell'Aquila, L'Aquila, Italy
Zak Kipling
European Centre for Medium-Range Weather Forecasts, Reading, UK
Alf Kirkevåg
Research Department, Norwegian Meteorological Institute, Oslo, Norway
Harri Kokkola
Finnish Meteorological Institute, Atmospheric Research Centre of Eastern Finland, Kuopio, Finland
Anton Laakso
Finnish Meteorological Institute, Atmospheric Research Centre of Eastern Finland, Kuopio, Finland
Julie Letertre-Danczak
European Centre for Medium-Range Weather Forecasts, Reading, UK
Marianne T. Lund
Center for International Climate Research, Oslo, Norway
Hitoshi Matsui
Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
Gunnar Myhre
Center for International Climate Research, Oslo, Norway
Cynthia Randles
NASA/Goddard Space Flight Center, Greenbelt, Maryland, USA
Michael Schulz
Research Department, Norwegian Meteorological Institute, Oslo, Norway
Twan van Noije
Royal Netherlands Meteorological Institute, De Bilt, the Netherlands
Kai Zhang
Earth Systems Analysis and Modeling, Pacific Northwest National Laboratory, Richland, Washington, USA
Lucas Alados-Arboledas
Andalusian Institute for Earth System Research, University of Granada, Granada, Spain
Urs Baltensperger
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen, Switzerland
Anne Jefferson
Cooperative Institute for Research in Environmental Studies, University of Colorado, Boulder, Colorado, USA
James Sherman
Department of Physics and Astronomy, Appalachian State University, Boone, North Carolina, USA
Junying Sun
Key Laboratory of Atmospheric Chemistry of CMA, Chinese Academy of Meteorological Sciences, Beijing 100081, China
Ernest Weingartner
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen, Switzerland
now at: Institute for Sensing and Electronics, University of Applied Sciences, Windisch, Switzerland
Department of Environmental Science, Stockholm University, Stockholm, Sweden
Bolin Centre for Climate Research, Stockholm, Sweden
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Latest update: 06 Nov 2025
Short summary
We investigate how well models represent the enhancement in scattering coefficients due to particle water uptake, and perform an evaluation of several implementation schemes used in ten Earth system models. Our results show the importance of the parameterization of hygroscopicity and model chemistry as drivers of some of the observed diversity amongst model estimates. The definition of dry conditions and the phenomena taking place in this relative humidity range also impact the model evaluation.
We investigate how well models represent the enhancement in scattering coefficients due to...
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