Meadow Site

Precipitation (in database)

• Rimco 7499 rain gauge (located approx. 30-40 m from the mast in an elevation of 1.5 m) data resolution: 0.2mm/tip, collection area 324cm2, (automatic)

Climatic Variables (in database)

1. Solar radiation

• NR01 – net-radiometer. Located on the mast. In- and outgoing long- and shortwave radiation (automatic, 10 min. average)

2. Windspeed

• Gill ultrasonic anemometer (located on the mast in an elevation of 7m above the meadow) measuring interval: 0-60 m/sec (automatic, 10 Hz, 10 min. and 30 min. average)

3. Wind direction

• Gill ultrasonic anemometer (located on the mast in an elevation of 7m above the meadow) measuring interval: 0-60 m/sec (automatic, 10 Hz, 10 min. and 30 min. average)

4. Air temperature and humidity

• HMP 45 C (located on the mast in an elevation of 5m above the meadow) (automatic, 10 min. average)

5. Soil temperature

• Sensors placed in the depths of 5cm, 10cm, and 20cm, ca. 50 m from the mast. (automatic, 10 min. average)

6. Soil heat flux

• Hukseflux plates at 5 cm depth, placed ca. 50 m from the mast. (automatic, 10 min. average)

Fluxes (not in database)

1. Water vapour and CO2

• Li-Cor LI-7500 (open path) (sensor placed on the mast in an elevation of 7 m) (automatic, 10 Hz, 30 min. average)
• Li-Cor LI-7000 (closed path) tube inlet placed at 7 m. (automatic, 10 Hz, 30 min. average)

2. CH4-flux (Not in database)

• Los Gatos DLT-100 (tube inlet placed at 7 m.) (automatic, 10 Hz, 30 min. average)
• Vacuum pump

Soil moisture (not in database)

• TDR-system

Probe 1-20 (4 horizontal probes in the depths of 20cm, 40cm, 60cm, 80cm, and 1m)
Probe 21-24 (75cm probes)
Probe 25 (1m “groundwater-level-probe”)
Probe 26-29 (surface probes, depth 20cm, vertical)
Probe 30-33 (surface probes, depth 5cm, horizontal, probe lengths 20cm)

• 10 Decagon sensors (5TE) at 5 cm depth (logging every 30 min. connected to datalogger) Check Eline.

Suction (not in database)

• 6 Decagon tensiometers to be installed. Who is the owner?

Water table (not in database)

• Two wells established (one equipped with pressure transducer) (one with a special TDR probe)

Soil parameters (not in database)
Retention characteristics: 5 soil samples in each of 3 depth intervals down to 70 cm. Lab analyses completed. Soil hydraulic conductivity: 5 soil columns in each of 2 depth intervals down to 60 cm. Lab analyses not completed.

Other installations

• Instrument shed with power, lighting, and ventilation.
• High speed optical fibre internet connection
• Server PC
• Datalogger (Campbell 3000)
• Harddisks, 2TB
• PFI-relay (less sensitive than initial relay)
• Video camera (placed on the mast)

Pending installations

• Decagon automated sensors

Previous installations:

Decagon sensors: 5 Decagon sensors (5TE).

Click here for map and photos of the Meadow site.

Download Google Earth Placemark.

Inauguration of the site June 3rd 2008 PhD-student Rasmus Ringgaard talks about the installation The Mast at the Meadow Site in Skjern Enge.   Panorama at the Meadow Site in Skjern Enge.