Lake Vänern landscape (LTSER) - Sweden

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https://deims.org/17c75aab-3805-4bfc-9d47-f05b35ae90e7

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Basic Information
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Site Name
Lake Vänern landscape (LTSER)
Short name
Lake Vänern LTSER
Country
Sweden
Site Manager
Björn Ohlsson
Site Description
Lake Vänern is the largest freshwater body in Sweden and the largest lake within the European Union with a 5 650 km2 water surface, a drainage basin covering a total of 46 800 sq-km, a coastline of 4 800 km and a freshwater archipelago made up of over 22 000 islands, islets and rocks. The lake contains one third of Sweden’s freshwater reserve. Lake Vänern is situated in the south west part of Sweden and is connected to the North Sea via the Kattegat coastal region. The only outlet from the lake to Skagerrak is via the Göta River. The core area equals Lake Vänern total catchment including all parts in both Norway and Sweden and Göta Älv River. With regards to data in Sweden this includes several administrative areas; the Counties of Värmland and Västragötaland. Within the LTSER area lies LTER Vänern (LTER_EU_SE_008)which has a core area equals the water body of Lake Vänern and 300 meters of the shore-line. Within this area lies the sampling station of the national environmental monitoring program of water quality (The Swedish Agency for Marine and Water Management).
Last modified
2023-07-11 09:07:47

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General Characteristics and Status
Site Status
Closed
Year Established
1973
Geographic
Sites are only displayed in the site overview map when they have set an active site status.
Centroid/Representative Coordinates

Latitude: 58.36 Longitude: 12.35

Size
ca. 5022900.00ha
Elevation (average)
180.00msl
Elevation (min)
0.00msl
Elevation (max)
779.30msl
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Site information [.json]

Centroid/representative coordinates [.shp] [.kml]
GEO-BON Biome
Coastal
Fresh water lakes
Fresh water rivers
Terrestrial
Biome
Fresh Water Lakes
Ecosystem Type
Agricultural
Coastal
Forest
Grasslands
Lakes
Fresh Water Lakes
Rivers
Fresh Water Rivers
Biogeographical Region
Boreal Bio-geographical Region
Air Temperature: Average Annual
6.40°C
Precipitation Annual
6200.00mm
Geology
The bedrock in the landscape around and beneath Lake Vänern consists mostly of gneiss. In Vänern exists a sharp boundary between two different gneiss regions, a younger gray form that consists of rocks which was converted relatively shallow in the crust in the west and an older reddish form of rock that converted deep in the earth in the East. The Sveconorwegian orogeny gave rise to the Mylonite zone, which lies across the lake in a north to south direction along the east side of Värmlandsnäs and Kållandsö. The zone arose about 1 000 million years ago when several continents collided and the supercontinent Rodinia was created
Vegetation
In the north rivers runs through forests and in the south streams flow through agricultural landscapes. The lake is situated within the Boreonemoral zone which is limited to the north by the Limes norrlandicus. However, the northern part of the drainage basin lies in the Boreal zone.
Hydrology
Lake Vänern is the largest freshwater body in Sweden and the largest lake within the European Union with a 5 650 km2 water surface, a drainage basin covering a total of 46 800 km2, a coastline of 4 800 km and a freshwater archipelago made up of over 22 000 islands, islets and rocks. The lake contains one third of Sweden?s freshwater reserve. Lake Vänern is situated in the south west part of Sweden and is connected to the North Sea via the Kattegat coastal region. The only outlet from the lake to Skagerrak is via the Göta River. The lake itself lies in the middle of a water system that is 720 km long and has its sources of the watershed in northern Sweden and in the neighboring districts in Norway in Lake Rogen. From there the water flows via the Klarälv River into Lake Vänern. The Värmlandssjön is the larger of the two basins in Lake Vänern. It is also large enough for geostrophic currents to occur anticlockwise throughout the summer. Vertical water transports within the basins are of little importance apart from in spring and autumn when the water masses are mixed and also intermixed between the basins. In summer a thermocline is established together with a warm water zone at the margins of the lake´s shallow regions.
Site Type
Platform
Permanent Power Supply
Yes
Equipment
Data infrastructure » Data services » Web Map Service (WMS)
Data infrastructure » Data services » Web Catalog Service (CSW)
Data infrastructure » Data services » Data portal
Equipment notes
The LTSER infrastructure contains two universities and one college, two county boards and two regional Offices and one regional museum. Overall the above questions are very difficult to answer regarding a LTSER plattform.
Accessible All Year
Yes
All parts of Site Accessible
Yes
Access Type
regular car
Permanent Operation
No
Operation Notes
Sampling in Lake Vänern please see LTER_EU_SE_008
LTER Site Classification
LTSER
There is EURO-CORDEX climate scenario data available for this site:
Projected Near Surface Specific Humidity ChangeRCP26RCP45RCP85
Projected Precipitation ChangeRCP26RCP45RCP85
Projected Sea Level Pressure ChangeRCP26RCP45RCP85
Projected Surface Downwelling Shortwave RadiationRCP26RCP45RCP85
Projected Near-Surface Wind SpeedRCP26RCP45RCP85
Projected Near-Surface Air TemperatureRCP26RCP45RCP85
Projected Daily Maximum Near-Surface Air TemperatureRCP26RCP45RCP85
Projected Daily Minimum Near-Surface Air TemperatureRCP26RCP45RCP85

You can also download the entire climate scenario dataset for this site from the EUDAT B2SHARE data store.