greenhouses

In 1990 a Campbell datalogger was installed in block 2 of the Toolik LTER experimental tussock plots. Sensors were placed in a control, fertilized, greenhouse, greenhouse fertilized, shade house and shade house fertilized sites.

In each plot two strings (one in a tussock and one in a moss dominated area) of copper/copper-nickel thermocouple wires (TC) were installed at depths of 10, 20, and 40 cm. The following label codes were used: CT=control, GH = greenhouses, SH = shade houses, F=fertilized, GF= greenhouse fertilized, SF = Shade house fertilized, with a suffix of 1 for Eriophorum vaginatum tussock or 2 for moss bed. All measurements are in degree Celsius. All soil sensors were read every 15 minutes and averaged every 3 hours. During early years due to storage limitations just daily soil values were stored during the winter months.

In the control plot additional sensors include: global solar radiation, photosynthetically active radiation, unfrozen precipitation, and at 3 meters: air temperature, relative humidity, wind speed, and wind direction. In greenhouses and shade houses plots, air temperature, relative humidity and photosynthetically active radiation are also measured during the growing season. See Sensors for a detailed description of each sensor used. Each sensor is read every minute and averaged or totaled every hour.

The soil sensors have been very problematic.  The sensors strings would move with freezing and thawing of the soil.  Most strings were heaved up 3 - 10 cm.  Soil data are being evaluated to determent the usable data and will be added when completely error checked.

Weather Moist Acidic Tussock (MAT)
Abstract
Gaius Shaver, 1993 Soil temperature data from the Arctic LTER Toolik Tussock Experimental plots, Arctic LTER 1991.. 10.6073/pasta/619c1b4cb6bd3f2407fa7c45de940f24
Soil temperature data from the Arctic LTER Toolik Tussock Experimental plots. In 1990 a Campbell CR21x datalogger was installed in block 2 of the Toolik LTER experimental tussock plots. The plots are located on a hillside near Toolik Lake (68 38' N, 149 36'W). Sensors were placed in a control, fertilized, greenhouse, greenhouse fertilized, shadehouse and shadehouse fertilized sites.
Gaius Shaver, 1992 Soil temperature data from the Toolik Tussock Experimental plots, Arctic LTER 1990.. 10.6073/pasta/1d26326026df4ecd8d1234ef5b69fed5
Soil temperature data from the Toolik Tussock Experimental plots. In 1990 a Campbell CR21x datalogger was installed in block 2 of the Toolik LTER experimental tussock plots. The plots are located on a hillside near Toolik Lake (68 38' N, 149 36'W). Sensors were placed in a control, fertilized, greenhouse, greenhouse fertilized, shade house and shade house fertilized sites.
CSV
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