Soil temperatures from 1993 through 2000


1.0 DOCUMENT INFORMATION
1.1 Document Title: TDE soil temperature data
1.2 Revision Date: February 12, 2001
1.3 Document Summary:   Hourly measurements of soil temperature for the TDE site.
1.4 Sponsor: Office of Biological and Environmental Research, U. S. DOE

 2.0 INVESTIGATOR
2.1 Investigator and data set contact:

P.J. Hanson (hansonpj@ornl.gov)
Environmental Sciences Division
Oak Ridge National Laboratory
Building 1059, P.O. Box 2008
Oak Ridge, TN 37831-6422
2.2 Title Of Investigation:
Walker Branch Throughfall Displacement Experiment (TDE)

 3.0 DATA SUMMARY
Soil temperatures for 10 and 35 cm from 1993 through 1998, and for various additional depths and treatment locations from 1999 and 2000.

4.0 PROCEDURES
From 1993 through 1997 hourly soil temperatures were measured at two depths (10 and 35 cm) at 2 location in each treatment plot.  Soil temperature themistors (LI-1000-15) were installed vertically from the surface to the specified depth.  Data were automatically logged on  six independent LI-1000 data loggers (LiCor Inc., Lincoln, Nebraska) housed in instrument enclosures located at one upslope and one downslope location per treatment plot.  No differences among treatment plots or slope positions were observed for temperatures at these depths and the data were pooled as hourly site averages.

Starting in 1998 soil temperatures observations were obtained from soil temperature thermistors (Campbell Scientific thermistor water/soil temperature probe (Model 107) installed horizontally into the walls of an excaveted and subsequently refilled soil pit.  The probes were distributed  at four depths in each pit (~10 cm, ~30 cm, ~45 cm and one deep probe in the 60 to 100 cm range).  Data were logged as hourly means of 5 second observations on a Campbell Scientific CR10X data logger.

5.0 OBSERVATION NOTES
None

 6.0 DATA ORGANIZATION

Data are provided in comma delimeted text files where the first line includes the variable names and subsequent lines include the hourly data.

6.1 Variable, Definition, and Units

6.2 Number of Records:  ~287,000 hourly observations.
6.3 Missing data: Missing data are present and represented by blanks between commas.
6.4 Related Data Sets: None

7.0 KNOWN ERRORS AND QUALITY ASSESSMENT
These daily data have been checked for errors.   Bad data and missing data are represented by empty cells within the data matrix.

8.0 NOTES
8.1 Limitations of the data:     None.
8.2 Known Problems With The Data:     None.
8.3 Usage Guidance:     None.

 9.0 REFERENCES:

Hanson, P.J., D.E. Todd, N.T. Edwards, and M.A. Huston.  1995.  Field performance of the Walker Branch Throughfall Displacement Experiment,   In:  A. Jenkins, R.C. Ferrier, and C. Kirby, eds., Ecosystem Manipulation Experiments: scientific approaches, experimental design and relevant results, Ecosystem Research Report #20, Commission of the European Communities, pp. 307-313.

Hanson, P.J., D.E. Todd, M.A. Huston, J.D. Joslin, Jennifer Croker, and R. M. Augé. 1998.  Description and field performance of the Walker Branch Throughfall Displacement Experiment: 1993-1996, ORNL/TM-13586, Oak Ridge National Laboratory, Oak Ridge, Tennessee.

10.0 DATA LISTING

Click on the following to view data for the listed year.
Once open the files can exported as text files with the 'Save As' command.

Soil temperature data file by year and depth