Parent institution: University of Helsinki
Active since 1995
Active through 1995 - current
Bäck, Jaana
email: jaana.back@helsinki.fi
The SMEAR II station is designed for multidisciplinary research on ecosystem-atmosphere interactions, established in 1995. The site is a Level I ICOS ecosystem and atmosphere site, and hosts the LTER Hyytiälä (LTER_EU_FI_007). The site consists of a tall mast (137 m), 2 Eddy towers for GHG, aerosol and trace gas fluxes, and several walk-in towers for access to canopy.
Country: Finland
Latitude: 61.8500000
Longitude: 24.2833333
Nearest town: Korkeakoski
Distance from neaerst town: 6 km
Interactions between climate, ecosystems and atmosphere; exchange of GHGs, trace gases (incl. O3, SO2, VOCs) and aerosols between ecosystems and atmosphere - effects of different forest management methods on ecosystem processes and biogeochemical cycles.
The site has a comprehensive set of ongoing long-term ecosystem measurements operated on a continuous basis, 24/7. It also has strong scientific and operational links between ICOS, ACTRIS, AnaEE and LTER (co-location). The Hyytiälä Forest research station is able to accommodate 130 person during summer time and ca 80 ppl during winter time. Cafeteria, office space, small lab, storage and technical assistance available.
As the site is a long-term ecosystem and atmosphere site (ICOS), large-scale destructive measurements should be avoided, or conducted outside the actual SMEAR II stand. The on-site laboratory facilities (equipment) are rather basic, and in need of some upgrading.
portable gas analyzers
Experiments duration: Months, Weeks, Years, Decades;
Total area: 10000 m²
from leaf scale to stand scaleAvailable area: 10000 m²
unit size: 1 m²
Area depends on the specific type and site of intended manipulations, larger areas are available outside the existing core measurement sites.Replicates number: 20
the number is dependent on experiments.Catchment areas (forest –lake, forest-wetland, lake-wetland)
Trenching (tree-soil interactions), fertilization (nutrient availability), ditching (water table level), prescribed burning, a choice of various forest management practices, manipulation of gas concentration in shoot chambers
Electricity available on site.
Years measured: Minimum 23 years, for many meteorological variables 30 years or longer
Mean Temperature: 3.5 °C
February Mean Temperature: -7.7 °C
July Mean Temperature: 16 °C
Mean Annual Speed: 2 m/s
Max. Annual Speed: m/s
Dominant Direction: SW
Precipitation type: Both;
Total annual precipitation: 711 mm
Mean snow cover duration: days
| Variable | Ecosystem | Status |
|---|---|---|
| Management - rotation practice | Forest | Active |
| Management - other | Forest | Active |
| Airpoll | Forest | Planned |
| Habitatfrag | Forest | Planned |
| Pests | Forest | Planned |
| Precip | Wetland | Planned |
| Hydro | Wetland | Active |
Up to 25 people
Up to 20 people
Up to 150 visitors
Up to 100 beds
Showers on site
Laundry on site