Articles | Volume 15, issue 3
https://doi.org/10.5194/tc-15-1383-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-15-1383-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
16 Mar 2021
Research article |
| 16 Mar 2021
| 16 Mar 2021
Giant dust particles at Nevado Illimani: a proxy of summertime deep convection over the Bolivian Altiplano
Filipe G. L. Lindau
CORRESPONDING AUTHOR
Centro Polar e Climático, Universidade Federal do Rio Grande do Sul, Porto Alegre, 91501-970, Brazil
Jefferson C. Simões
Centro Polar e Climático, Universidade Federal do Rio Grande do Sul, Porto Alegre, 91501-970, Brazil
Climate Change Institute, University of Maine, Orono, ME 04469, USA
Barbara Delmonte
Department of Environmental and Earth Sciences, University of Milano-Bicocca, 20126 Milan, Italy
Patrick Ginot
Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, IGE, 38000 Grenoble, France
Giovanni Baccolo
Department of Environmental and Earth Sciences, University of Milano-Bicocca, 20126 Milan, Italy
Chiara I. Paleari
Department of Environmental and Earth Sciences, University of Milano-Bicocca, 20126 Milan, Italy
Elena Di Stefano
Department of Environmental and Earth Sciences, University of Milano-Bicocca, 20126 Milan, Italy
Elena Korotkikh
Climate Change Institute, University of Maine, Orono, ME 04469, USA
Douglas S. Introne
Climate Change Institute, University of Maine, Orono, ME 04469, USA
Valter Maggi
Department of Environmental and Earth Sciences, University of Milano-Bicocca, 20126 Milan, Italy
Eduardo Garzanti
Department of Environmental and Earth Sciences, University of Milano-Bicocca, 20126 Milan, Italy
Sergio Andò
Department of Environmental and Earth Sciences, University of Milano-Bicocca, 20126 Milan, Italy
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Short summary
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Glaciers are important freshwater sources in the Tropical Andes. Their retreat has been accelerating since the 1980s. This exposes fresh glacial sediments and facilitates the transport of coarse dust particles to the Nevado Illimani summit. Both the glacial area of Illimani and its ice core record of coarse dust particles respond to warmer conditions across the southern tropical Andes, and drier conditions over the Amazon basin.
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Short summary
Information about the past climate variability in tropical South America is stored in the snow layers of the tropical Andean glaciers. Here we show evidence that the presence of very large aeolian mineral dust particles at Nevado Illimani (Bolivia) is strictly controlled by the occurrence of summer storms in the Bolivian Altiplano. Therefore, based on the snow dust content and its composition of stable water isotopes, we propose a new proxy for information on previous summer storms.
Information about the past climate variability in tropical South America is stored in the snow...
