Articles | Volume 20, issue 22
Atmos. Chem. Phys., 20, 14273–14302, 2020
https://doi.org/10.5194/acp-20-14273-2020

Special issue: StratoClim stratospheric and upper tropospheric processes...

Atmos. Chem. Phys., 20, 14273–14302, 2020
https://doi.org/10.5194/acp-20-14273-2020

Research article 24 Nov 2020

Research article | 24 Nov 2020

Strong day-to-day variability of the Asian Tropopause Aerosol Layer (ATAL) in August 2016 at the Himalayan foothills

Sreeharsha Hanumanthu et al.

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Latest update: 27 Oct 2021
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Short summary
During boreal summer, anthropogenic sources yield the Asian Tropopause Aerosol Layer (ATAL), found in Asia between about 13 and 18 km altitude. Balloon-borne measurements of the ATAL conducted in northern India in 2016 show the strong variability of the ATAL. To explain its observed variability, model simulations are performed to deduce the origin of air masses on the Earth's surface, which is important to develop recommendations for regulations of anthropogenic surface emissions of the ATAL.
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