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

Aliaga, Diego; Sinclair, Victoria A.; Andrade, Marcos; Artaxo, Paulo; Carbone, Samara; Kadantsev, Evgeny; Laj, Paolo; Wiedensohler, Alfred; Krejci, Radovan; Bianchi, Federico

doi:https://doi.org/10.5194/acp-21-16453-2021

Articles | Volume 21, issue 21

https://doi.org/10.5194/acp-21-16453-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-21-16453-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 21

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, Victoria A. Sinclair, Marcos Andrade, Paulo Artaxo, Samara Carbone, Evgeny Kadantsev, Paolo Laj, Alfred Wiedensohler, Radovan Krejci, and Federico Bianchi

Supplement

https://doi.org/10.5194/acp-21-16453-2021-supplement

Data sets

Source region clusters SRR timeseries D. Aliaga https://doi.org/10.5281/zenodo.4539590

Model code and software

FLEXPART-WRF_v3.3.2 modified code D. Aliaga https://doi.org/10.5281/zenodo.5516295

A description of the advanced research WRF model version 4 (https://www2.mmm.ucar.edu/wrf/users/) C. Skamarock, B. Klemp, J. Dudhia, O. Gill, Z. Liu, J. Berner, W. Wang, G. Powers, G. Duda, D. Barker, and X.-Y. Huang https://doi.org/10.5065/1DFH-6P97

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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.