BOREAS TGB-04 Water and Sediment Temperature data over the NSA-BP

Summary

The BOREAS TGB-04 team collected several data sets in support of their flux 
tower measurements at the NSA Beaver Pond site.  This data set contains water 
and sediment temperature data collected from May to September 1994.  The data 
are stored in tabular ASCII files.

Table of Contents
   *  1. Data Set Overview
   *  2. Investigator(s)
   *  3. Theory of Measurements
   *  4. Equipment
   *  5. Data Acquisition Methods
   *  6. Observations
   *  7. Data Description
   *  8. Data Organization
   *  9. Data Manipulations
   *  10. Errors
   *  11. Notes
   *  12. Application of the Data Set
   *  13. Future Modifications and Plans
   *  14. Software
   *  15. Data Access
   *  16. Output Products and Availability
   *  17. References
   *  18. Glossary of Terms
   *  19. List of Acronyms
   *  20. Document Information

1.	Data Set Overview

1.1 Data Set Identification

BOREAS TGB-04 Water and Sediment Temperature data over the NSA-BP

1.2 Data Set Introduction

The fluxes of heat, water and CO2 from one beaver pond were measured 
continuously using the energy balance Bowen ratio approach. The diffuse and 
bubble flux CH4 were measured several times a week using chambers. The chamber 
approach was used to sample CO2 and CH4 flux from 4 to 5 additional beaver 
ponds, once ever two weeks, and regional survey of the beaver ponds once during 
the IFC.  The results of the work was extrapolated from the local to regional 
scale in collaboration with the remote-sensing project of J. Miller (York 
University). 

1.3 Objective/Purpose

The primary objective of the study was to quantify the exchange of water, and 
CH4 between boreal forest beaver ponds and the atmosphere for the ice free 
period of the BOReal Ecosystem-Atmosphere Study (BOREAS).

The secondary objective of the study was to study the soil climate and soil 
characteristics at a forest site in conjunction with the flux studies of P. 
Crill (UNH). Soil moisture and temperatures were measured continuously, and soil 
porosity was determined.

1.4 Summary of Parameters

The main parameters are daily sediment and water temperatures.

1.5 Discussion

None given.

1.6 Related Data Sets

BOREAS TGB01 CH4 Tower flux data over NSA
BOREAS TGB-01 CO2 and CH4 Chamber Flux data over the NSA
BOREAS TGB-03 NEE and air and water temperature data over the NSA Fen
BOREAS TGB-03 CO2 and CH4 Chamber Flux data over the NSA
BOREAS TGB-05 CO, CO2, and CH4 Chamber Flux data over the NSA

2.	Investigator(s)

2.1 Investigator(s) Name and Title

Dr. Nigel T. Roulet
Department of Geography
McGill University
Montreal
(514)-398-4945
(514)-398-7437 (fax)
roulet@felix.geog.mcgill.ca


2.2 Title of Investigation

Stores and Dynamics of Organic Matter in Boreal Ecosystems

2.3 Contact Information

Contact 1
Dr. Nigel T. Roulet
Department of Geography
McGill University
Montreal
(514)-398-4945
(514)-398-7437 (fax)
roulet@felix.geog.mcgill.ca


Contact 2
Jeffrey A. Newcomer
Raytheon STX Corporation
NASA/GSFC
Greenbelt, MD 
(301) 286-7858
Jeffrey.Newcomer@gsfc.nasa.gov

3. Theory of Measurements

None given.

4.	Equipment

4.1 Sensor/Instrument Description

4.1.1 Collection Environment

Water and sediment temperatures were determined.

4.1.2 Source/Platform

Ground.

4.1.3 Source/Platform Mission Objectives

The mission objective was to determine the water and sediment temperatures over 
at the NSA-BP.

4.1.4 Key Variables

The key variables measured were the water and sediment temperatures at specific 
depths.

4.1.5 Principles of Operation

None given.

4.1.6 Sensor/Instrument Measurement Geometry

Not applicable.

4.1.7 Manufacturer of Sensor/Instrument

None given.

4.2 Calibration

None given.

4.2.1 Specifications

4.2.1.1 Tolerance

None given.

4.2.2 Frequency of Calibration

None given.

4.2.3 Other Calibration Information

None given.

5. Data Acquisition Methods

None given.

6.	Observations

6.1	Data Notes

BOREAS Information System (BORIS) staff compiled the information that were 
available to create this document.

6.2 Field Notes

None given.

7. Data Description

7.1 Spatial Characteristics

7.1.1 Spatial Coverage

The North American Datum of 1983 (NAD83) coordinates of the site are:

NSA-9BP-FLXTR:  55.84225 N, 98.02747 W

7.1.2 Spatial Coverage Map

Not available.

7.1.3 Spatial Resolution

These are point source measurements.

7.1.4 Projection

Not applicable.

7.1.5 Grid Description

Not applicable.

7.2 Temporal Characteristics

7.2.1 Temporal Coverage

The data were collected from May to September 1994.

7.2.2 Temporal Coverage Map

Not applicable.

7.2.3 Temporal Resolution

During optimal conditions, the temperatures were recorded hourly.

7.3 Data Characteristics

Sample data format shown in the companion data definition file (tgb4wsed.def).

7.4 Sample Data Record

Sample data format shown in the companion data definition file (tgb4wsed.def).

8. Data Organization

8.1 Data Granularity

All of the Water and Sediment Temperature data over the NSA-BP are contained in 
one data set.

8.2 Data Format(s)

The data file contains numerical and character fields of varying length 
separated by commas. The character fields are enclosed with single apostrophe 
marks. There are no spaces between the fields. Sample data format shown in the 
companion data definition file (tgb4wsed.def).

9. Data Manipulations

9.1 Formulae

None given.

9.1.1 Derivation Techniques and Algorithms

None given.

9.2 Data Processing Sequence

9.2.1 Processing Steps

None given.

9.2.2 Processing Changes

None given.

9.3 Calculations

9.3.1 Special Corrections/Adjustments

None given.

9.3.2 Calculated Variables

None given.

9.4 Graphs and Plots

None.

10. Errors

10.1 Sources of Error

None given.

10.2 Quality Assessment

10.2.1 Data Validation by Source

None given.

10.2.2 Confidence Level/Accuracy Judgment

None given.

10.2.3 Measurement Error for Parameters

None given.

10.2.4 Additional Quality Assessments

None given.

10.2.5 Data Verification by Data Center

Data were examined for general consistency and clarity and available information 
was compiled into this document.

11. Notes

11.1 Limitations of the Data

None given.

11.2 Known Problems with the Data

None given.

11.3 Usage Guidance

None given.

11.4 Other Relevant Information

None given.

12. Application of the Data Set

None given.

13. Future Modifications and Plans

This data set is in its final format.

14. Software

14.1 Software Description

None given.

14.2 Software Access

None given.

15.   Data Access

15.1  Contact for Data Center/Data Access Information

These BOREAS data are available from the Earth Observing System Data and 
Information System (EOS-DIS) Oak Ridge National Laboratory (ORNL) Distributed 
Active Archive Center (DAAC). The BOREAS contact at ORNL is:

ORNL DAAC User Services
Oak Ridge National Laboratory
(865) 241-3952
ornldaac@ornl.gov
ornl@eos.nasa.gov

15.2  Procedures for Obtaining Data

BOREAS data may be obtained through the ORNL DAAC World Wide Web site at 
http://www-eosdis.ornl.gov/ or users may place requests for data by telephone, electronic mail, or fax.

15.3  Output Products and Availability

Requested data can be provided electronically on the ORNL DAAC's anonymous FTP 
site or on various media including, CD-ROMs, 8-MM tapes, or diskettes.

The complete set of BOREAS data CD-ROMs, entitled "Collected Data of the Boreal 
Ecosystem-Atmosphere Study", edited by Newcomer, J., et al., NASA, 1999, are 
also available.

16. Output Products and Availability

16.1 Tape Products

None.

16.2 Film products

None.

16.3 Other Products

Comma separated ASCII files.

17. References

17.1 Platform/Sensor/Instrument/Data Processing Documentation

None.

17.2 Journal Articles and Study Reports

Sellers, P. and F. Hall. 1994. Boreal Ecosystem-Atmosphere Study: Experiment 
Plan. Version 1994-3.0, NASA BOREAS Report (EXPLAN 94). 

Sellers, P. and F. Hall. 1996. Boreal Ecosystem-Atmosphere Study: Experiment 
Plan. Version 1996-2.0, NASA BOREAS Report (EXPLAN 96). 

Sellers, P., F. Hall, and K.F. Huemmrich. 1996. Boreal Ecosystem-Atmosphere 
Study: 1994 Operations. NASA BOREAS Report (OPS DOC 94). 

Sellers, P., F. Hall, and K.F. Huemmrich. 1997. Boreal Ecosystem-Atmosphere 
Study: 1996 Operations. NASA BOREAS Report (OPS DOC 96). 

Sellers, P.J., F.G. Hall, R.D. Kelly, A. Black, D. Baldocchi, J. Berry, M. Ryan, 
K.J. Ranson, P.M. Crill, D.P. Lettenmaier, H. Margolis, J. Cihlar, J. Newcomer, 
D. Fitzjarrald, P.G. Jarvis, S.T. Gower, D. Halliwell, D. Williams, B. Goodison, 
D.E. Wickland, and F.E. Guertin. 1997. BOREAS in 1997: Experiment overview, 
scientific results, and future directions. Journal of Geophysical Research 
102(D24):28,731-28,769.

Sellers, P., F. Hall, H. Margolis, B. Kelly, D. Baldocchi, G. den Hartog, J. 
Cihlar, M.G. Ryan, B. Goodison, P. Crill, K.J. Ranson, D. Lettenmaier, and D.E. 
Wickland. 1995. The boreal ecosystem-atmosphere study (BOREAS): an overview and 
early results from the 1994 field year. Bulletin of the American Meteorological 
Society. 76(9):1549-1577. 

17.3 Archive/DBMS Usage Documentation

None.

18. Glossary of Terms

None.

19. List of Acronyms

    AES     - Atmospheric Environment Services
    BOREAS  - BOReal Ecosystem-Atmosphere Study
    BORIS   - BOREAS Information System
    BP      - Beaver Pond 
    CMDL    - Climate Monitoring and Diagnostics Laboratory
    DAAC    - Distributed Active Archive Center
    ECD     - Electron Capture Detector
    EOS     - Earth Observing System
    EOSDIS  - EOS Data and Information System
    FID     - Flame Ionization Detector
    GC      - Gas Chromatograph
    GSFC    - Goddard Space Flight Center
    NASA    - National Aeronautics and Space Administration
    NSA     - Northern Study Area
    OBS     - Old Black Spruce
    ORNL    - Oak Ridge National Laboratory
    PANP    - Prince Albert National Park
    SSA     - Southern Study Area
    TE      - Terrestrial Ecology
    TCD     - Thermal Conductivity Detector
    TGB     - Trace Gas Biogeochemistry
    URL     - Uniform Resource Locator

20. Document Information

20.1 Document Revision Date

     Written:  10-Aug-1998
     Last Updated:  05-May-1999

20.2 Document Review Date(s)

     BORIS Review:  04-May-1999
     Science Review:

20.3 Document ID

20.4 Citation

20.5 Document Curator

20.6 Document URL

Keywords

Methane flux
Carbon dioxide flux
Trace Gas
Water temperature
Sediment temperature
TGB04_Water_Sed_Temp.doc
06/09/99