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Group photo 2017

Chemical Aeronomy in the Mesosphere and Ozone in the Stratosphere (CHAMOS) is an on-going science collaboration focusing on energetic particle precipitation and related atmospheric effects. Originally, it was started by scientist from Finnish Meteorological Institute (FMI) and Sodankylä Geophysical Observatory (SGO) back in 1998 as an response to European Space Agency's Announcement of Opportunity related to the Global Ozone Monitoring by Occultation of Stars (GOMOS) instrument on board the Envisat satellite.

The collaboration has now continued for 20 years and produced over 80 peer-reviewed scientific publications. Today there are 28 people in the CHAMOS group, and more institutes have joined CHAMOS: British Antarctic Survey, University of Otago, EISCAT Scientific Association, Institute for Space-Earth Environmental Research, University Centre in Svalbard, University of Helsinki, and National Center for Atmospheric Research.

Over the years, CHAMOS work has been funded by Academy of Finland, European Union, New Zealand Marsden Fund, National Environmental Research Council (UK), University of Oulu (FI), and Norwegian Research Council.