Articles | Volume 18, issue 19
https://doi.org/10.5194/acp-18-14623-2018
© Author(s) 2018. 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-18-14623-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
12 Oct 2018
Research article |
| 12 Oct 2018
| 12 Oct 2018
Time-dependent entrainment of smoke presents an observational challenge for assessing aerosol–cloud interactions over the southeast Atlantic Ocean
Department of Atmospheric Sciences, University of Washington, Seattle, Washington, USA
Amie Dobracki
Department of Oceanography, University of Hawai'i at Mānoa, Honolulu, Hawai'i, USA
Steffen Freitag
Department of Oceanography, University of Hawai'i at Mānoa, Honolulu, Hawai'i, USA
Jennifer D. Small Griswold
Department of Atmospheric Sciences, University of Hawai'i at Mānoa, Honolulu, Hawai'i, USA
Ashley Heikkila
Department of Atmospheric Sciences, University of Hawai'i at Mānoa, Honolulu, Hawai'i, USA
Steven G. Howell
Department of Oceanography, University of Hawai'i at Mānoa, Honolulu, Hawai'i, USA
Mary E. Kacarab
School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia, USA
James R. Podolske
NASA Ames Research Center, Moffett Field, California, USA
Pablo E. Saide
Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, California, USA
National Center for Atmospheric Research, Boulder, Colorado, USA
Robert Wood
Department of Atmospheric Sciences, University of Washington, Seattle, Washington, USA
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Latest update: 18 Apr 2025
Short summary
Smoke from Africa can mix into clouds over the southeast Atlantic and create new droplets, which brightens the clouds, reflects more sunlight, and thus cools the region. Using aircraft data from a NASA field campaign, we find that cloud properties are correlated with smoke as expected when the smoke is below the clouds but not when smoke is above the clouds because it takes several days for clouds to mix smoke downward. We recommend methods that can track clouds as they move for future studies.
Smoke from Africa can mix into clouds over the southeast Atlantic and create new droplets, which...
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