Articles | Volume 21, issue 21
Atmos. Chem. Phys., 21, 16453–16477, 2021
https://doi.org/10.5194/acp-21-16453-2021
Atmos. Chem. Phys., 21, 16453–16477, 2021
https://doi.org/10.5194/acp-21-16453-2021
Research article
10 Nov 2021
Research article | 10 Nov 2021

Identifying source regions of air masses sampled at the tropical high-altitude site of Chacaltaya using WRF-FLEXPART and cluster analysis

Diego Aliaga et al.

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Short summary
We investigate the origin of air masses sampled at Mount Chacaltaya, Bolivia. Three-quarters of the measured air has not been influenced by the surface in the previous 4 d. However, it is rare that, at any given time, the sampled air has not been influenced at all by the surface, and often the sampled air has multiple origins. The influence of the surface is more prevalent during day than night. Furthermore, during the 6-month study, one-third of the air masses originated from Amazonia.
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