Atmospheric dust in South America workshop

Buenos Aires, 20-21 April 2020
Climat-AmSud CNRS project

Workshop Aim:

This workshop will bring together French, South American and international scientists working on observations (modern and past) and the modeling of atmospheric dust and climate. These two days of seminars, courses and round table will provide an opportunity to discuss recent work on these critical uncertainties and on progress made in determining emissions, transport and deposition of dust, as well as the sensitivity of oceans, continents and climate with physico-chemical variations of atmospheric dust.
Participants will aim at identifying key questions to better understand how to limit the impact of atmospheric dust on the cycles of continental and oceanic biogeochemical elements, as well as on climate change. The main participants from the dust modeling, dust reconstruction and biogeochemistry circles will discuss the latest advances in their work and share their major scientific questions not only with each other, but also with the young generation of students in the field of earth and climate science.

Atmospheric mineral dust is an essential component of the dynamics of the climate and the earth system. These affect radiative forcing, precipitation, atmospheric chemistry and biogeochemistry of the oceans. The processes of emission, transport and impact of mineral atmospheric dust on the global climate vary according to past and current climatic and environmental changes. It is therefore crucial to improve our understanding of the impact of atmospheric dust on climate, the environment and fertilization of the oceans.

Environmental records (peat, loess, ice) suggest large fluctuations in atmospheric dust over geological time. However, atmospheric transport models have difficulties to reproduce the observed spatial and temporal variability of the dust inputs. In addition, observational and modeling studies based on current climate suggest that not all of the iron in the dust is equally available for the continental and oceanic biomes. The solubility of iron varies considerably depending on the mineralogy and condition of the soil, as well as the atmospheric transformations of the dust during transport. However, modeling studies are still mainly based on constant solubility.
Day 1 - April 20
Morning : Keynote seminars
Afternoon : Regular talks and round table.
Day 2 - April 21
Morning : Course: Atmospheric dust, climate and the environment.
Afternoon: round tables and conclusion.

Confirmed invited speakers:
Cécile Guieu. LOV, Villefranche-sur-Mer, France)
J-B Stuut. Royal NIOZ, The Netherlands
Diego Gaiero. CICTERRA/FCEFyN-UNC, Cordoba, Argentina
Augusto Crespi. CENTAP, Puerto Madryn, Argentina
Fabrice Lambert. Pontifical Catholic University of Chile

The workshop is free but limited to 20 people.
Registration can be made to François De Vleeschouwer: by providing an abstract of the work to be presented.

Registration deadline is January 15th.


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