Study Number: 

1040

Project Title:

Continuously measured forest soil moisture at four sites in the Coweeta basin.

Investigator(s):

Brian D. Kloeppel  E-Mail | Tel. 828.524.2128 ext 127 | Biographical Sketch
Paul V. Bolstad  E-Mail | Tel. 612.625.1703 | Biographical Sketch
Affiliated Institution(s): University of Georgia (Kloeppel)
University of Minnesota (Bolstad)
Address: Coweeta Hydrologic Laboratory
3160 Coweeta Lab Road
Otto, North Carolina 28763   USA

School of Forest Resources
University of Minnesota
115 Green Hall
St. Paul, Minnesota 55102   USA
Study Type: Terrestrial
Project Type: Coweeta Core Research
Study Period:

01/2000 - present
Status/Notes:

Type 1
Funding Sources:

National Science Foundation, DEB-9632854 (Text Version) and DEB-0218001 (Text Version) to Coweeta LTER; National Science Foundation, Tree Acclimation Grant.
Abstract: Volumetric soil water content was measured at four locations in the Coweeta Basin across a range of elevations. At each location, soil water content was measured from 0 to 30 cm and from 30 to 60 cm. In addition, air temperature was measured at 100 cm height and soil temperature was measured at 5 and 20 cm depth. Data are output at both hourly and daily time scales.


 Resources for students about terms used in this study:
Soil Water Content - Source: University of Sydney
Soil Water Properties - Source: Northern Arizona University
Location(s), Described: Station 1: on Watershed 1 access road near Coweeta reservoir (elevation __m)
Station 2: near Watershed 55 - LTER riparian study site (elevation __ m)
Station 3: top of Watershed 36 at the end of Shope Fork Road (elevation __m)
Station 4: top of Watershed 27 near the 527 terrestrial gradient plot (photographs) (elevation __m)
Location(s), Download GPS: ArcView Shape Files (shp.):   UTM, NAD83, Zone 17 | Lat/Lon
Location(s), Online Maps: USGS Topographic-based Maps of Research Sites
 (Printable for fieldwork)
Methods/Experimental Design: See Abstract above.

Equipment used: Campbell CR10 datalogger; Campbell CS615 soil moisture sensor; Omega type T 24 gauge thermocouple sensors

For hourly data, data are averaged hourly.
For daily data, maximum and minimum values for the previous 24 hours are included.

Please see the following linked documents regarding Quality Assurance / Quality Control procedures and findings.
Sampling Frequency: Data are collected every 60 seconds, averaged every 60 minutes, and output hourly and daily.
Data Columns:

Hourly Data:
site - Site number
year - Year
julday - Julian day
hour - Hour
stemp05 - Soil temperature at 5 cm depth; degrees Celsius (C)
stemp20 - soil temperature at 20 cm depth; degrees Celsius (C)
atemp100 - air temperature at 100 cm height; degrees Celsius (C)
smois30 - soil moisture at 0 to 30 cm depth; percent volumetric soil water content (%)
smois60 - soil moisture at 30 to 60 cm depth; percent volumetric soil water content (%)
battvolt - battery voltage; volts
reftemp - reference temperature; degrees Celsius (C)

Daily Data:
site - Site number
year - Year
julday - Julian day
hour - Hour
maxref - maximum reference temperature; degrees Celsius (C)
minref - minimum reference temperature; degrees Celsius (C)
maxstemp05 - maximum soil temperature at 5 cm depth; degrees Celsius (C)
minstemp05 - minimum soil temperature at 5 cm depth; degrees Celsius (C)
maxstemp20 - maximum soil temperature at 20 cm depth; degrees Celsius (C)
minstemp20 - minimum soil temperature at 20 cm depth; degrees Celsius (C)
maxair - maximum air temperature at 100 cm height; degrees Celsius (C)
minair - minimum air temperature at 100 cm height; degrees Celsius (C)
maxsmois30 - maximum soil moisture at 0 to 30 cm depth; percent volumetric soil water content (%)
minsmois30 - minimum soil moisture at 0 to 30 cm depth; percent volumetric soil water content (%)
maxsmois60 - maximum soil moisture at 30 to 60 cm depth; percent volumetric soil water content (%)
minsmois60 - minimum soil moisture at 30 to 60 cm depth; percent volumetric soil water content (%)

Missing Data Codes: . (Period)

Publications:

Representative publications and research data from investigator(s) of this study:
Kloeppel - Global search
 Bolstad - Global search
Data Restrictions: Users must adhere to the Coweeta LTER Data Policy.
Metadata: EML Format (XML Schema) | Information about EML
Data Downloads: Hourly Data (2000 - 2008):
Microsoft ExcelŽ (.xls) | Text Comma Delimited (.csv) | DBase (.dbf)

Daily Data (2000 - 2008):
Microsoft ExcelŽ (.xls) | Text Comma Delimited (.csv) | DBase (.dbf)