• Sammaltunturi: 67.973°N 24.116°E 565 m a.s.l.
• Matorova: 68.000°N 24.240°E 340 m a.s.l.
• Kenttärova: 67.987°N 24.243°E 347 m a.s.l.

Observational platform

Finland

• Finnish Meteorological Institute (FMI)

https://en.ilmatieteenlaitos.fi/pallas-atmosphere-ecosystem-supersite

• Antti Hyvärinen
  Facility PI (1 Jan 2022 – 31 Dec 2026)

The Pallas Atmosphere-Ecosystem Supersite consists of research infrastructure for monitoring and studying the atmosphere, ecosystems and their interactions. Pallas is located 170 km north of the Arctic Circle, partly in the area of Pallas-Yllästunturi National Park. The area is in the northernmost limit of the northern boreal forest zone, with the surrounding forest consisting of mixed pine, spruce and birch.

The research area hosts four sub-sites with different research programs within a 5 km radius. ACTRIS measurements are conducted at three of the four sites:
- the Main site, Sammaltunturi, on top of an Arctic fell, occasionally inside low level clouds for aerosol in situ, cloud in situ and trace gas in situ measurements
- the Matorova site on an elevated forest clearing for aerosol in situ measurements
- the Kenttärova forest site for cloud remote sensing measurements

In addition to ACTRIS, the The Pallas Atmosphere-Ecosystem Supersite is part of GAW, ICOS and EMEP.

A wide range of top-class research is conducted at the various research stations and measurement sites established within the Pallas area by the FMI. The main research themes include greenhouse gas concentrations and ecosystem–atmosphere fluxes, the climate effects of atmospheric aerosols, aerosol–cloud interactions and air quality. Pallas is one of the sites of the Finnish network for monitoring the concentrations of mercury and other heavy metals, benzo(a)pyrene, ozone and other air pollutants, as required by the European legislation on ambient air quality. Over the years, research projects have produced a huge amount of information about the sub-Arctic atmosphere and its interactions with ecosystems.

• Lohila et al. (2015). Preface to the special issue on integrated research of atmosphere, ecosystems and environment at Pallas. https://hdl.handle.net/10138/228278