Articles | Volume 21, issue 21
https://doi.org/10.5194/acp-21-16453-2021
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, Victoria A. Sinclair, Marcos Andrade, Paulo Artaxo, Samara Carbone, Evgeny Kadantsev, Paolo Laj, Alfred Wiedensohler, Radovan Krejci, and Federico Bianchi

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Cited articles

Aliaga, D.: Source region clusters SRR timeseries, Zenodo [data set], https://doi.org/10.5281/zenodo.4539590, 2021. a
Aliaga, D.: FLEXPART-WRF_v3.3.2 modified code, Zenodo [code], https://doi.org/10.5281/zenodo.5516295, 2021. a
Bianchi, F., Sinclair, V. A., Aliaga, D., Zha, Q., Scholz, W., Wu, C., Heikkinen, L., Modini, R., Partoll, E., Velarde, F., Moreno, I., Gramlich, Y., Huang, W., Leiminger, M., Enroth, J., Peräkylä, O., Marinoni, A., Xuemeng, C., Blacutt, L., Forno, R., Gutierrez, R., Ginot, P., Uzu, G., Facchini, M. C., Gilardoni, S., Gysel-Beer, M., Cai, R., Petäjä, T., Rinaldi, M., Saathoff, H., Sellegri, K., Worsnop, D., Artaxo, P., Hansel, A., Kulmala, M., Wiedensohler, A., Laj, P., Krejci, R., Carbone, S., Andrade, M., and Mohr, C.: The SALTENA Experiment: Comprehensive Observations of Aerosol Sources, Formation and Processes in the South American Andes, B. Am. Meteorol. Soc., 1, 1–46, https://doi.org/10.1175/BAMS-D-20-0187.1, 2021. a, b
Bolaño-Ortiz, T. R., Pascual-Flores, R. M., López-Noreña, A. I., Ruggeri, M. F., Lakkis, S. G., Fernández, R. P., and Puliafito, S. E.: Assessment of Absorbing Aerosols on Austral Spring Snow Albedo Reduction by Several Basins in the Central Andes of Chile from Daily Satellite Observations (2000–2016) and a Case Study with the WRF-Chem Model, SN Appl. Sci., 1, 1352, https://doi.org/10.1007/s42452-019-1256-z, 2019. a
Brattich, E., Hernández-Ceballos, M., Cinelli, G., and Tositti, L.: Analysis of 210Pb Peak Values at Mt. Cimone (1998–2011), Atmos. Environ., 112, 136–147, https://doi.org/10.1016/j.atmosenv.2015.04.020, 2015. a
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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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