Litter layer temperatures 1997/1998 and 2000


1.0 DOCUMENT INFORMATION
1.1 Document Title: TDE litter layer temperature data
1.2 Revision Date:  March 8, 2001
1.3 Document Summary:   Hourly measurements of litter layer temperature for the TDE site during selected measurement campaigns.
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

Data in 1997 were and 2000 were collected by E.G. O'Neill and Philip Allen, respectively.

2.2 Title Of Investigation:
Walker Branch Throughfall Displacement Experiment (TDE)

3.0 DATA SUMMARY
Hourly temperatures of the Oi litter layer in 1997 or 2000.

4.0 PROCEDURES
Self contained data loggers (Onset Computer Corporation, Bourne, Ma) were deployed within the Oi litter layer during extensive periods in 1997/1998 and 2000.  In 1997 we used StowAway XTI08 sensors in the dry (x4) and ambient (x4) plots.   The XTI08 sensors employed an external thermistor positioned inside litter decomposition bags that were located in the Oi horizon leaf litter from March 15, 1997 through February 6, 1998.  For the 2000 observations StowAway TidbiT sensors were placed directly in the Oi layer  of the dry (x4) and wet (x4) plots from  Jan 27, 2000 to December 14, 2000.

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:  7724 hourly observations in 1997/1998 and 9142 hourly observations in 2000.
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.

1997/1998 litter temperature data
2000 Oi litter temperature data