ACTRIS Sweden (Aerosols, Clouds, and Trace gases Research Infra­structure)

ACTRIS Sweden

ACTRIS (Aerosols, Clouds, and Trace gases Research Infra­structure)

ACTRIS Sweden is the Swedish part of a distributed pan-European environmental research infrastructure for providing data and research infrastructure services of long-term quality-assured observations of short-lived climate-forcing pollutants, including aerosols, clouds and reactive trace gases. Since January 2022, ACTRIS Sweden is a Swedish national research infrastructure with funding from the Swedish Research Council for the period 2022-2026. ACTRIS Sweden sites are co-located with the ICOS-Sweden observations at the tall tower sites at Hyltemossa in southern Sweden and Norunda outside Uppsala. Since many years, ACTRIS Sweden is operating at the Zeppelin station on Svalbard (Arctic). ACTRIS Sweden will start activities also at two additional ICOS Sweden sites, those of Svartberget (northern Sweden boreal) and Östergarnsholm (Baltic Sea coastal, Gotland). A mobile exploratory platform will also be made available equipped with state-of-the-art mass spectrometers for on-line aerosol and trace gas observations.
The pan-European ACTRIS RI has evolved and matured over a number of years with an estimated capital value investment amounting to 450 M€ and running costs of 6 M€/year. ACTRIS RI includes National Facilities in 21 European countries with more than 80 observational platforms and field stations distributed widely across Europe. In 2021, ACTRIS was granted an ESFRI status as a Landmark European strategic research infrastructure and will be established as an ERIC (European Research Infrastructure Consortium) in 2022, with Sweden as one of the founding members.

ACTRIS Sweden long-term continuous observations include: aerosol size distributions (MPSS: 3–850 nm; APS: 0.7–10 µm), particle light absorption (7-λ Aethalo­meter), particle forward/backward light scattering (3-λ nephelometer), cloud condensation nuclei (CCN counter), aerosol chemical composition (ToF-ACSM) and OC/EC filter sampling and analysis (ACTRIS standards). Gas measurements include NO/NO2, SO2 and O3. Campaign-wise ACTRIS-related measurements include: aerosol fluxes (EC + gradient), soot (SP-AMS, SP2), particle effective density (DMA-APM), Ice Nuclei (PINC). ICOS observation directly supporting ACTRIS are mainly: boundary layer height (ceilometer) and various micrometeorological observations.

All ACTRIS data are submitted on a yearly basis to the ACTRIS Data Portal (actris.nilu.no), where data are available in full open access according to FAIR principles.

Physical access is provided to the ACTRIS Sweden sites. The data collected within ACTRIS consist of some 100 000 data sets that are all freely available in full open (virtual) access.

Lund University is hosting ACTRIS Sweden which involves in total six Research-performing organizations (RPO): Lund University (Director Prof Erik Swietlicki); Stockholm University (Dr Radovan Krejci); Gothenburg University (Prof Mattias Hallquist); Swedish University of Agricultural Sciences - Umeå (Prof Mats B Nilsson); Swedish Meteorological and Hydrological Institute SMHI (Dr Salomon Eliassson); Uppsala University (Prof Anna Rutgersson).