Ursula Keller wins “Swiss Nobel” Marcel Benoist Prize
Farewell: the NCCR MUST ended 
MUST2022 Conference
New scientific highlights
FELs of Europe prize for Jeremy Rouxel
Ruth Signorell wins Doron prize
New FAST-Fellow Uwe Thumm at ETH
International Day of Women and Girls in Science
New scientific highlight
EU XFEL Young Scientist Award for Camila Bacellar,
Prizes for Giulia Mancini and Rebeca Gomez Castillo
Nobel Prize in Chemistry awarded to RESOLV Member Benjamin List
Hans Jakob Wörner invited to give the „New Horizons Solvay Lectures” 
Unusual keynote talk at an international scientific conference
NCCR MUST at Scientifica 2021PlanetSolar DeepWater expedition
Aerosols play a crucial role of aerosols in modulating climate at regional-to-continental scales, either through reflection of solar energy, thus contributing to a slight cooling of the lower atmosphere, or through absorption of infrared radiation (hence local warming) according to the type of particle in suspension. The ocean plays a considerable role in the emission of suspended material in liquid or solid form, principally by breaking waves. The processes leading to aerosol release from the oceans is not well known despite the large quantities involved; for example, it is estimated that oceans emit between one-quarter and one-third of all sulphate aerosols present in the atmosphere.
We intend to assess the differential ocean emissions of certain chemical and biological aerosols into the atmosphere along the entire course of the Deepwater expedition along the Gulf Stream from Florida to Norway. In that purpose, we will use two innovative laser-based instruments used for the first time for aerosol investigations at the ocean-atmosphere interface.
The first one is a pioneering equipment developed at the Department for Applied Physics and uses laser fluorescence to detect the type and abundance of bio-aerosols. The instrument, initially developed for detecting pollen in the atmosphere and now developed by a start-up company, Plair (www.plair.ch), will be used for the first time in an ocean-atmosphere context and allow characterizing the biological fraction of the marine aerosols. In parallel, a second aerosol detector (Grimm 365), will continuously monitor the abundance and size distribution of atmospheric aerosols in 32 size classes from 25 nm to 34 µm, with a temporal resolution of 5 s.
Together, these measurements cover the whole range of interest for both ocean-atmosphere exchanges and the further evolution of the aerosols in the atmosphere. These data will be correlated with the physical, chemical and biological parameters measured in the ocean as well as the physical parameters of the atmosphere (wind, temperature, humidity), so as to offer unprecedented understanding about the dynamics of the formation and evolution of marine atmospheric aerosols.
We intend to assess the differential ocean emissions of certain chemical and biological aerosols into the atmosphere along the entire course of the Deepwater expedition along the Gulf Stream from Florida to Norway. In that purpose, we will use two innovative laser-based instruments used for the first time for aerosol investigations at the ocean-atmosphere interface.
The first one is a pioneering equipment developed at the Department for Applied Physics and uses laser fluorescence to detect the type and abundance of bio-aerosols. The instrument, initially developed for detecting pollen in the atmosphere and now developed by a start-up company, Plair (www.plair.ch), will be used for the first time in an ocean-atmosphere context and allow characterizing the biological fraction of the marine aerosols. In parallel, a second aerosol detector (Grimm 365), will continuously monitor the abundance and size distribution of atmospheric aerosols in 32 size classes from 25 nm to 34 µm, with a temporal resolution of 5 s.
Together, these measurements cover the whole range of interest for both ocean-atmosphere exchanges and the further evolution of the aerosols in the atmosphere. These data will be correlated with the physical, chemical and biological parameters measured in the ocean as well as the physical parameters of the atmosphere (wind, temperature, humidity), so as to offer unprecedented understanding about the dynamics of the formation and evolution of marine atmospheric aerosols.
