New high-latitude mineral dust experiments at CESAM
From June 24 to July 5, 2024, LISA welcomed researchers from the University of Birmingham (UK), the University of Aarhus (Denmark) and Tianjin University (China) to carry out experiments on the CESAM chamber to study the physico-chemical and optical properties of High Latitude Dust (HLD). HLDs are mineral dust aerosols emitted by wind erosion processes in arid zones located north of 50°N or south of 40°S. HLDs are an emerging component of the polar climate system, with influences on terrestrial, atmospheric, marine and cryospheric compartments. The role of HDHs is likely to increase progressively over the coming years and decades as a result of increasing natural emissions (reduction in glaciers and ice and snow-covered surfaces) and the growing impact of anthropogenic activities, such as mining
Experiments carried out on the CESAM chamber in June-July 2024 provided unique data on dust properties from sources in Greenland, Canada, Svalbard and Antarctica. Natural soils collected in these regions were used to resuspend the mineral dust, which was then injected into the chamber. The study was funded by a TNA (Trans National Access) project of the EU ATMO-ACCESS program. These experiments will provide key information to improve understanding of the role of HLDs on regional climate in the polar zone. The activity was also an opportunity to train three PhD students from the Universities of Aarhus and Tianjin in simulation chamber experiments and aerosol property measurements.
A group of motivated and enthusiastic researchers, and some very promising experiments!
(Top, left) Group photo when the experiments were carried out: from left to right Y. Xiao and Y. Liu (Univ. of Tianjin), Z. Shi (Univ. Birmingham), E. Pangui (LISA), C. Frigaard Rasmussen and C. Juncher Jørgensen (Univ. of Aarhus). (Bottom, left) Y. Xiao and Y. Liu after dust injection at CESAM. (Left) C. Frigaard Rasmussen cleaning the CESAM chamber between experimen
More info :
https://cesam.cnrs.fr/
https://www.atmo-access.eu/
https://eu-polarnet.eu/services-hildae/