The project deals with the climate-forcing properties of Antarctic aerosols, atmospheric processing and long-range transport of aerosols, as well as the interaction of aerosols with radiation and clouds. Three major topics will be investigated: 1) the relative contribution of different cloud condensation nuclei (CCN) sources in the total CCN budget in representative parts of Antarctica, 2) the nature, source and relative contribution of different ice nucleating particles (INPs) in Antarctic clouds, and 3) estimation of the contribution of long-range transported aerosol to scattering, absorption and CCN and INPs at representative parts of Antarctica. The project contains an intensive campaign at the Finnish station Aboa in Queen Maud Land 130 km from the open sea, another at the Argentinian Marambio, a sea-level site in the Antarctic Peninsula and analyses of longterm data from Marambio and the high-altitude site Concordia, a French-Italian site on the East Antarctic plateau.

2021

2024