Arctic Space Centre and Sodankylä Space Campus, News

AirCore and FTIR measurements at the Arctic Space Centre in Sodankylä

The image shows part of the FMI's infrastructure in Sodankylä. Photo courtesy of Rigel Kivi (FMI).

A series of AirCore balloon borne measurements took place in July/August 2023 at the Arctic Space Centre in Sodankylä. The balloon payloads carried AirCore and other instruments from the surface up to the stratosphere (~30-35 km altitude).

The aim of the balloon borne measurements was to investigate the composition of the polar stratosphere during boreal summer, to test multiple novel atmospheric whole-air samplers and sensors and to intercompare results. The technology allowed to derive vertical profiles for many long-lived stratospheric trace species from the ground up to 35 km, i.e. higher than any aircraft sampling ceiling. The measurements covered a unique range of gases, including O2, the main   greenhouse gases including their isotopic signatures (H2O, CO2, CH4, and N2O), pollutants/biomass burning tracers such as CO, species important for aerosol formation such as COS, stratospheric    circulation tracers such as SF6, and Ozone-Depleting Substances (ODSs). Complementary trace gas measurements were taken using a Fourier-transform infrared (FTIR) spectrometer, participating in the Total Carbon Column Observing Network (TCCON) and in the Network for the Detection of Atmospheric Composition Change (NDACC).

Ground-based measurements can be used to support current and upcoming satellite missions, including the NASA OCO-2 mission; the GOSAT and the GOSAT-2 mission (a mission within the GCOM (Global Change Observation Mission) program of Japan); ESA Sentinel 5-P; TanSat (Chinese Carbon Dioxide Observation Satellite Mission);  the Aerosol and Carbon Detection Lidar (ACDL) onboard the China’s Atmospheric Environment Satellite; CNES (French Space Agency) MicroCarb; the Copernicus Carbon Dioxide Monitoring mission CO2M; ESA Sentinel 5; MERLIN, a joint mission by DLR (German Space Administration) and CNES (French Space Agency) and other missions.

Contributing Institutes of the observations taken in Sodankylä in July/August 2023 were the Forschungszentrum Jülich in Germany (Project Leader); University of Bern in Switzerland; Global Monitoring Laboratory of the National Oceanic and Atmospheric Administration (NOAA) in Boulder, Colorado, USA; University of Frankfurt in Germany; Groningen University and Utrecht University in the Netherlands; and the Finnish Meteorological Institute.

The field campaign at the Pallas-Sodankylä research site was supported by the EU ATMO-ACCESS Project, the Forschungszentrum Jülich and by other participating organisations.

More information

Dr. Rigel Kivi, Senior Research Scientist, Finnish Meteorological Institute,

Dr. Johannes Laube, Forschungszentrum Jülich,

Prof. Antti Hyvärinen, Principal Scientist, Head of Unit: Atmospheric Composition, Finnish Meteorological Institute,

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