Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 1
Articles | Volume 26, issue 1
https://doi.org/10.5194/acp-26-217-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-217-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 1
Research article
 | 
07 Jan 2026
Research article |  | 07 Jan 2026

Dust semi-direct effects: low-level cloud response to free-tropospheric dust-induced longwave radiation over the North Atlantic Ocean

Satyendra K. Pandey and Adeyemi A. Adebiyi

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Short summary
Mineral dust absorbs solar and terrestrial radiation, modifying the environment where clouds exist. When above low-level clouds, dust often increases cloud cover due to shortwave absorption. Using satellite data over the North Atlantic Ocean, we show that longwave absorption by dust reduces cloud-top cooling and weakens the increase in low-level cloud. Our results highlight the importance of accurately representing longwave effects of dust in model assessments of aerosol-climate interactions.
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