Atmospheric Radiation Measurement Program facilities newsletter, January 2001.

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In the realm of global climate modeling, numerous variables affect the state of the atmosphere and climate. One important area is soil moisture and temperature. The ARM Program uses several types of instruments to gather soil moisture information. An example is the soil water and temperature system (SWATS). A SWATS is located at each of 21 extended facility sites within the CART site boundary. Each system is configured to measure soil moisture and temperature at eight distinct subsurface levels. A special set of probes used in the SWATS measures soil temperature, soil-water potential, and volumetric water content. Sensors are placed ... continued below

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Holdridge, D. J. February 5, 2001.

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Description

In the realm of global climate modeling, numerous variables affect the state of the atmosphere and climate. One important area is soil moisture and temperature. The ARM Program uses several types of instruments to gather soil moisture information. An example is the soil water and temperature system (SWATS). A SWATS is located at each of 21 extended facility sites within the CART site boundary. Each system is configured to measure soil moisture and temperature at eight distinct subsurface levels. A special set of probes used in the SWATS measures soil temperature, soil-water potential, and volumetric water content. Sensors are placed at eight different depths below the soil surface, starting at approximately 5 cm (2 in.) below the surface and ending as deep as 175 cm (69 in.). Each site has two identical sets of probes buried 1 m (3.3 ft) apart, to yield duplicate measurements as a quality control measure. At some sites, impenetrable soil or rock layers prevented installation of probes at the deeper levels. The sensors are connected to an electronic data logger that collects and stores the data. Communication equipment transfers data from the site. All of the electronic equipment is housed in a weatherproof enclosure mounted on a concrete slab.

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  • Other Information: PBD: 5 Feb 2001

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  • Report No.: ANL/ER/NL-01-01
  • Grant Number: W-31-109-ENG-38
  • DOI: 10.2172/797939 | External Link
  • Office of Scientific & Technical Information Report Number: 797939
  • Archival Resource Key: ark:/67531/metadc741064

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  • February 5, 2001

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  • Oct. 19, 2015, 7:39 p.m.

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  • March 24, 2016, 5:38 p.m.

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Holdridge, D. J. Atmospheric Radiation Measurement Program facilities newsletter, January 2001., report, February 5, 2001; Illinois. (digital.library.unt.edu/ark:/67531/metadc741064/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.