NASA/TM--2000-209891, Vol. 142

Technical Report Series on the

Boreal Ecosystem-Atmosphere Study (BOREAS)

Forrest G. Hall and Shelaine Curd, Editors

Volume 142

BOREAS TE-5 Tree Ring

and Carbon Isotope Ratio Data

J. Ehleriingel; J.R. Brooks, and L. Flanagan

National Aeronautics and

Space Administration

Goddard Space Flight Center

Greenbelt, Maryland 20771

October 2000

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NASA/TMm2000-209891, Vol. 142

Technical Report Series on the

Boreal Ecosystem-Atmosphere Study (BOREAS)

Forrest G. Hall and SheIaine Curd, Editors

Volume 142

BOREAS TE-5 Tree Ring

and Carbon Isotope Ratio Data

Jim Ehleriingel; University of Utah, Salt Lake Ci O"

J. Renee Brooks, University of South Florida, Tampa

Laro' Flanagan, University of Lethbridge, Lethbridge, Alberta, Canada

National Aeronautics and

Space Administration

Goddard Space Flight Center

Greenbelt, Maryland 20771

October 2000
NASA Center for AeroSpace Information

7121 Standard Drive

Hanover, MD 21076-1320

Price Code: A17

P_vailable from:

National Technical Information Service

5285 Port Royal Road

Springfield, VA 22161

Price Code: AI0

=
BOREAS TE-5 Tree Ring and Carbon Isotope Ratio Data

Jim Ehleringer, J.Renee Brooks, Larry Flanagan

Summary

The BOREAS TE-5 team collected several data sets to investigate the vegetation-atmosphere CO2 and

H20 exchange processes. These data include tree ring widths and cellulose carbon isotope data from

coniferous trees collected at the BOREAS NSA and SSA in 1993 and 1994 by the BOREAS TE-05

team. Ring width data are provided for both Picea mariana and Pinus banksiana. The carbon isotope

data are provided only for Pinus banksiana, The data are provided 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

I3) Future Modifications and Plans

14) Software

I5) 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 TE-05 Tree Ring and Carbon Isotope Ratio Data

1.2 Data Set Introduction

Tree ring widths were collected from trees from Old Black Spruce (OBS) in the BOReal

Ecosystem-Atmosphere Study (BOREAS) Southern Study Area (SSA), Upland Black Spruce (UBS)

in the Northern Study Area (NSA), and Old Jack Pine (OJP) in the SSA and the NSA. The carbon

isotope ratio of cellulose was measured on individual tree rings from 1974 to 1994 for the OJP sites,

two trees from each site.

1.3 Objective/Purpose

The purpose of this study was to measure year-to-year variation in ring widths and carbon isotope

ratios in the conifers at the northern and southern sites. These data were compared with year-to-year

variations on meteorological measurements in an attempt to find whether variables have influenced

both diameter growth and carbon isotope discrimination. Investigators studied whether controlling

climate variables were the same in the north as in the south.

Page 1
1.4 Summary of Parameters and Variables

Annual ring widths (mm)

Carbon isotope ratios

1.5 Discussion

Tree cores were collected at both the NSA and SSA in both 1993 and 1994 at the OJP, OBS, and

OBS (T6R56) sites. These data can be compared to determine differences in growth rates and possible

effects of climate variables during the time frame recorded by tree ring widths. The tree ring isotope

data ranges can be used to determine the relative concentration of C isotopes based on knowing the

relative assimilation by trees at different sites.

1.6 Related Data Sets

BOREAS TE-05 Diurnal CO2 Canopy Profile Data

BOREAS TE-05 Leaf Carbon Isotope Data

International tree ring data base (http://tree.ltrr.arizona.edu/-grissino/itrdb.htm)

2. Investigator(s)

2.1 Investigator(s) Name and Title

Jim Ehleringer

S1RFER

Dept. of Biology

University of Utah

Dr. Larry Flanagan

Department of Biological Sciences

University of Lethbridge

2.2 Title of Investigation

Vegetation-Atmosphere CO2 and H20 Exchange Processes: Stable Isotope Analyses

2.3 Contact Information

Contact 1:

J. Ren_e Brooks

Department of Biology

University of South Florida

Tampa, FL 33620-5150

(813) 974-7352

(813) 974-3563 (fax)

jrbrooks@chuma.cas.usf.edu

Contact 2:

Dr. Larry Flanagan

Department of Biological Sciences

University of Lethbridge

4401 University Drive

Lethbridge, Alberta

T1K 3M4, CANADA

Page 2
Contact 3:

Shelaine Curd

Raytheon ITSS

Code 923

NASA GSFC

Greenbelt, MD 20771

(301) 286-2447

(301) 286-0239 fax

shelaine.curd@ gsfc.nasa.gov

3. Theory of Measurements

Annual variation in tree ring width represents variation in stem growth. Annual variation in delta 13C

of cellulose represents the annual variation of carbon isotope discrimination by the tree. For complete

information on stable carbon isotope ratios, see Coleman and Fry (1991). The stable carbon isotope

ratio (13C/12C) is not presented as an absolute but as the relative difference between the isotope ratios

of the sample and standard gases: delta 13C (o/oo) = ((Rsample /Rstandard) -1) * 1000, where

Rsample and Rstandard are the 13C/12C ratios of the plant sample and standard Pee Dee Belemite

(PDB). The overall precision of the measurements of cellulose materials was :l: 0.11 o/oo.

4. Equipment

4.1 Sensor/Instrument Description

Isotope ratio mass spectrometer (delta S, Finnigan Mat, San Jose, CA). Measuring stage for tree

ring widths (Fred C. Henson, Mission Viego, CA).

4.1.1 Collection Environment

NSA and SSA black spruce and jack pine sites. Carbon isotopes of cellulose were measured only

for the last 20 years of growth (1994-1974).

4.1.2 Source/Platform

Dominant conifer trees, which were considered to be those trees that were clearly taller than the

surrounding trees, were chosen.

4.1.3 Source/Platform Mission Objectives

The purpose of this study was to understand the relationship between environmental variables and

annual variation in tree ring widths and carbon isotope ratios.

4.1.4 Key Variables

Year

Annual ring widths (ram)

Annual cellulose carbon isotope ratios

4.1.5 Principles of Operation

None.

4.1.6 Sensor/Instrument Measurement Geometry

Not applicable.

Page 3
4.1.7 Manufacturer of Sensor/Instrument

Mass spectrometer:

Finnigan Mat

355 River Oaks Parkway

San Jose, CA 95134

(404) 424-5284

Measuring stage:

Fred C. Henson Co.

28362 Marguerite Parkway

Mission Viego, CA 92691-1523

(714) 831-9192

4.2 Calibration

Ring width calibration: Calibration on the measuring stage was checked prior to each use. The

nature of the measuring stage is such that the calibration is extremely stable and no adjustments were

ever needed.

Carbon isotope calibration: The mass spectrometer is calibrated to standard PDB gas. This

international standard was a limestone of fossil Belemnitella Americana from the Cretaceous Pee Dee

formation in South Carolina. In addition, a standard cellulose sample was run after every 12 cellulose

samples.

4.2.1 Specifications

None.

4.2.1.1 Tolerance

Annual ring widths:

Precision: 0.01 mm

Carbon isotope ratio

Precision: 0.1

4.2.2 Frequency of Calibration

Mass spectrometer: 1 in every 12 samples was a cellulose standard. Mass spectrometers are

maintained by Craig Cook at the University of Utah.

Measuring stage: Calibration was tested prior to every use.

4.2.3 Other Calibration Information

None.

5. Data Acquisition Methods

At each site, four to six dominant trees were cored or slabs were collected for analysis. All slabs and

cores were collected at breast height (1.3 m). Slabs were collected from trees that were destructively

harvested for biomass estimates (see other BOREAS Terrestrial Ecology (TE)-06 documentation). In

the lab, slabs and cores were sanded so that tree rings were clearly visible. For each tree, ring widths

were measured from two directions and averaged together. Prior to measuring ring widths, tree rings

were counted along both measuring directions and checked to ensure that each count was the same.

Skeletal plots were created for each tree and compared for all trees within a plot to ensure comparable

dating for all the trees. Aging these trees was very straightforward from diameter at breast height

(dbh); however, it was understated that this is not the absolute age of the tree because time and growth

were needed for the tree to reach dbh (for more details see: Cook and Kairiukstis, 1990). Each tree

ring chronology begins at the last year of growth (1993 or 1994, depending on when the sample was

collected) and ends at the year the tree reached 1.3 m (center of the slab).

Page 4
Carbonisotopesof celluloseweremeasuredonlyforthelast20yearsof growth(1994-1974).To

collectenoughcellulosematerialforisotopeanalyses,only treeslabswereused.Foreachyear,sample

materialwascollectedfromfoursidesof theslabto ensureannualuniformity.Treeringswere

carefullyseparatedusinganexactoknifewhileviewedundera40xdissectingscope.Carewastaken

to includetissueonlyfromtheyearof interestinthesample.Cellulosewasextractedfromthewood

samplesfollowingthemethodoutlinedinLeavittandDanzer(1992).Cellulosesampleswerethen

analyzedonthemassspectrometerfor delta13C.

6.1 Data Notes

Nonegiven.

6.2 Field Notes

Nonegiven.

6. Observations

7. Data Description

7.1 Spatial Characteristics

7.1.1 Spatial Coverage

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

• NSA-OJP flux tower site: Lat/Long: 55.927°N, 98.62°W; Universal Transverse Mercator

(UTM) Zone 14, N:6,197,997 E:523,501.

• SSA-OJP flux tower site: Lat/Long:53.916°N, 104.69°W: UTM Zone 13, N:5,951,000

E:479,400.

• NSA-UBS canopy access tower site (auxiliary site number T6R5S, BOREAS Experiment

Plan, Version 3).

• SSA-OBS flux tower site: Lat/Long: 53.985°N, I05.122°W; UTM Zone 13, N:5,981,904

E:492,000.

7.1.2 Spatial Coverage Map

Not available.

7.1.3 Spatial Resolution

These data represent point measurements of the sampled trees that may be representative of a larger

area.

7.1.4 Projection

Not applicable.

7.1.5 Grid Description

Not applicable.

7.2 Temporal Characteristics

Not applicable.

7.2.1 Temporal Coverage

Ring width measurements:

NSA-OJP: 1994-1939

NSA-UBS (T6R5S): 1994-1944

Page 5
SSA-OJP:1994,1902

SSA-OBS:1994-1867

Carbon isotope data:

NSA-OJP and SSA-OJP: 1994-1974

7.2.2 Temporal Coverage Map

Not applicable.

7.2.3 Temporal Resolution

Annual.

7.3 Data Characteristics

7.3.1 Parameter/Variable

The parameters contained in the data files on the CD-ROM are:

Column Name

SITE NAME

SUB SITE

START DATE

END DATE

SPECIES

TREE RING YEAR

TREE

TREE RING WIDTH

CELLULOSE DELTA C13

CRTFCN CODE

REVISION DATE

7.3.2 Variable Description/Definition

The descriptions of the parameters contained in the data files on the CD-ROM a_:

Column Name

SITE NAME

SUB SITE

START DATE

END DATE

SPECIES

Description

The identifier assigned to the site by BOREAS,

in the format SSS-TTT-CCCCC, where SSS identifies

the portion of the study area: NSA, SSA, REG,

TRN, and TTT identifies the cover type for the

site, 999 if unknown, and CCCCC is the identifier

for site, exactly what it means will vary with

site type.

The identifier assigned to the sub-site by

BOREAS, in the format GGGGG-IIIII, where GGGGG is

the group associated with the sub-site

instrument, e.g. HYD06 or STAFF, and IIIII is the

identifier for sub-site, often this will refer to

an instrument.

The date on which the collection of data

commenced.

The date on which the collection of the data was

terminated.

Botanical (Latin) name of the species (Genus

Page 6
TREE RING YEAR

TREE

TREE RING WIDTH

CELLULOSE DELTA C13

CRTFCN CODE

REVISION DATE

species).

The year of the tree ring growth.

The individual tree from which measurements were

taken.

The width of the tree ring growth.

Relative difference of the C13 isotope between

the sample and a standard.

The BOREAS certification level of the data.

Examples are CPI (Checked by PI), CGR (Certified

by Group), PRE (Preliminary), and CPI-??? (CPI

but questionable).

The most recent date when the information in the

referenced data base table record was revised.

7.3.3 Unit of Measurement

The measurement units for the parameters contained in the data files on the CD-ROM are:

Column Name Units

SITE NAME [none]

SUB SITE [none]

START DATE [DD-MON-YY]

END DATE [DD-MON-YY]

SPECIES [none]

TREE RING YEAR [none]

TREE [none]

TREE RING WIDTH [millimeters]

CELLULOSE DELTA C13 [unitless]

CRTFCN CODE [none]

REVISION DATE [DD-MON-YY]

7.3.4 Data Source

The sources of the parameter values contained in the data files on the CD-ROM are:

Column Name Data Source

SITE NAME

SUB SITE

START DATE

END DATE

SPECIES

TREE RING YEAR

TREE

TREE RING WIDTH

CELLULOSE DELTA C13

CRTFCN CODE

REVISION DATE

[BORIS Designation]

[BORIS Designation]

[Human Observer]

[Human Observer]

[Human Observer]

[Human Observer]

[Human Observer]

[Human Observer]

[Laboratory Equipment]

[BORIS Designation]

[BORIS Designation]

Page 7
7.3.5 Data Range

The following table gives information about the parameter values found in the data files on the

CD-ROM.

Minimum Maximum Missng Unrel Below Data

Data Data Data Data Detect Not

Column Name Value Value Value Value Limit Cllctd

SITE NAME NSA-9BS-9TETR SSA-OJP-FLXTR None _ None None None

SUB SITE 9TE05-TRC01 9TE05-TRC01 None None None None

START DATE 09-AUG-93 30-AUG-94 None None None None

END DATE 29-AUG-93 19-SEP-94 None None None None

SPECIES N/A N/A None None None None

TREE RING YEAR 1867 1994 None None None None

TREE A I None None None None

TREE RING WIDTH .04 4.815 None None None None

CELLULOSE DELTA C13 -25.37 -22.11 None None None Blank

CRTFCN CODE CPI CPI None None None None

REVISION DATE 12-AUG-97 12-AUG-97 None None None None

Minimum Data Value --

Maximum Data Value --

Missng Data Value --

Unrei Data Value --

Below Detect Limit --

Data Not Cllctd --

The minimum value found in the column.

The maximum value found in the column.

The value that indicates missing data. This is used to

indicate that an attempt was made to determine the

parameter value, but the attempt was unsuccessful.

The value that indicates unreliable data. This is used

to indicate an attempt was made to determine the

parameter value, but the value was deemed to be

unreliable by the analysis personnel.

The value that indicates parameter values below the

instruments detection limits. This is used to

indicate that an attempt was made to determine the

parameter value, but the analysis personnel determined

that the parameter value was below the detection

limit of the instrumentation.

This value indicates that no attempt was made to

determine the parameter value. This usually

indicates that BORIS combined several similar but

not identical data sets into the same data base table

but this particular science team did not

measure that parameter.

Blank -- Indicates that blank spaces are used to denote that type of value.

N/A -- Indicates that the value is not applicable to the respective column.

None -- Indicates that no values of that sort were found in the column.

7.4 Sample Data Record

The following is a sample of the first few records from the data table on the CD-ROM:

SITE NAME, SUB SITE, START DATE,END DATE,SPECIES,TREE RING YEAR, TREE,

TREE RING WIDTH,CELLULOSE DELTA CI3,CRTFCN CODE,REVISION DATE

'NSA-9BS-9TETR', '9TE05-TRC01',30-AUG-94,19-SEP-94, 'Picea mariana',1957,

'D',I.63,, 'CPI',I2-AUG-97

'NSA-9BS-9TETR', '9TE05-TRC01',30-AUG-94,19-SEP-94,'Picea mariana',1954,

'D',I.935,, 'CPI',I2-AUG-97

Page 8
8. Data Organization

8.1 Data Granularity

The smallest unit of data tracked by the BOREAS Information System (BORIS) was that collected

at a given site on a given date.

8.2 Data Format(s)

The Compact Disk-Read-Only Memory (CD-ROM) files contain American Standard Code for

Information Interchange (ASCII) 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.

Each data file on the CD-ROM has four header lines of Hyper-Text Markup Language (HTML)

code at the top. When viewed with a Web browser, this code displays header information (data set

title, location, date, acknowledgments, etc.) and a series of HTML links to associated data files and

related data sets. Line 5 of each data file is a list of the column names, and line 6 and following lines

contain the actual data. Each row represents an annual record beginning with the year.

9. Data Manipulations

9.1 Formulae

None.

9.1.1 Derivation Techniques and Algorithms

None.

9.2 Data Processing Sequence

9.2.1 Processing Steps

None.

9.2.2 Processing Changes

None.

10. Errors

10.1 Sources of Error

Other than normal background error associated with the instrumentation, there are no Other sources

of error. The overall precision of the measurements of cellulose materials was + O. 11 o/oo.

10.2 Quality Assessment

None given.

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.

Page 9
10.2.4 Additional Quality Assessments

None given.

10.2.5 Data Verification by Data Center

Data were examined for general consistency and clarity.

11. Notes

11.1 Limitations of the Data

Small sample sizes.

11.2 Known Problems with the Data

There are no known problems with the data.

11.3 Usage Guidance

None.

11.4 Other Relevant Information

None given.

12. Application of the Data Set

Tree ring and isotope data can be examined to determine previous climate conditions and how those

conditions affect the growth of trees.

None given.

13. Future Modifications and Plans

14. Software

14.1 Software Description

The ITRDB Program Library Version 2.1 is the latest version of the ITRDB Program Library, an

extensive collection of programs to acquire, manipulate, analyze, and display tree ring data; they are

accompanied by extensive documentation, including online help, and run from an easy-to-use

DOS-based menu. Henri D. Grissino-Mayer wrote many of the programs as well as the main menu,

Richard L. Holmes contributed the famous Dendrochronology Program Library, and Edward R. Cook

contributed the standardization program ARSTAN. Other contributors include Thierry Varem-Sanders,

Oriol Bosch, and Paul Krusic, and to them we are very grateful. If you or anybody you work with has

developed software you feel would be useful to the entire dendrochronological community, contact

Henri D. Grissino-Mayer to see about incorporating the programs in the Program Library.

14.2 Software Access

Software access -- http://tree.ltrr.arizona.edu/-grissino/software.htm

For tree ring data: (source: Henri Grissino-Mayer http://tree.ltrr.arizona.edu/~grissino/software.htm)

Page 10
15. Data Access

The TE-05 tree ring and carbon isotope ratio data are available from the Earth Observing System Data

and Information System (EOSDIS) Oak Ridge National Laboratory (ORNL) Distributed Active

Archive Center (DAAC).

15.1 Contact Information

For BOREAS data and documentation please contact:

ORNL DAAC User Services

Oak Ridge National Laboratory

P.O. Box 2008 MS-6407

Oak Ridge, TN 37831-6407

Phone: (423) 241-3952

Fax: (423) 574-4665

E-mail: ornldaac@ornl.gov or ornl@eos.nasa.gov

15.2 Data Center Identification

Earth Observing System Data and Information System (EOSDIS) Oak Ridge National Laboratory

(ORNL) Distributed Active Archive Center (DAAC) for Biogeochemical Dynamics

http://www-eosdis.oml.gov/.

15.3 Procedures for Obtaining Data

Users may obtain data directly through the ORNL DAAC online search and order system

[http://www-eosdis.ornl.gov/] and the anonymous F'['P site [flp://www-eosdis.oml.gov/data/] or by

contacting User Services by electronic mail, telephone, fax, letter, or personal visit using the contact

information in Section 15.1.

15.4 Data Center Status/Plans

The ORNL DAAC is the primary source for BOREAS field measurement, image, GIS, and

hardcopy data products. The BOREAS CD-ROM and data referenced or listed in inventories on the

CD-ROM are available from the ORNL DAAC.

16. Output Products and Availability

16.1 Tape Products

None.

16.2 Film Products

None.

16.3 Other Products

These data are available on the BOREAS CD-ROM series.

Page 11
17. References

17.1 Platform/Sensor/Instrument/Data Processing Documentation

None.

17.2 Journal Articles and Study Reports

Coleman, D.C. and B. Fry. 1991. Carbon Isotope Techniques. Academic Press, San Diego, pp. 273.

Cook, E.R. and L.A. Kairiukstis. 1990. Methods of Dendrochronology: Applications in the

Environmental Sciences. Kluwer Academic Publishers, Dordrecht, pp. 394.

Leavitt, S.W. and S.R. Danzer. 1992. Methods for batch processing small wood samples to

holocellulose for stable-carbon isotope analysis. Anal. Chem. 65: 87-89.

Newcomer, J., D. Landis, S. Conrad, S. Curd, K. Huemmrich, D. Knapp, A. Morrell, J. Nickeson,

A. Papagno, D. Rinker, R. Strub, T. Twine, F. Hall, and P. Sellers, eds. 2000. Collected Data of The

Boreal Ecosystem-Atmosphere Study. NASA. CD-ROM.

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., F. Hail, 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. Wicktand. 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.

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): 28,731-28,770.

17.3 Archive/DBMS Usage Documentation

None.

18. Glossary of Terms

delta 13C, or d 13C - stable carbon isotope ratio

Page 12
ASCII

BOREAS

BORIS

CD-ROM

DAAC

dbh

EOS

EOSDIS

GIS

GSFC

HTML

NASA

NSA

OBS

OJP

ORNL

PANP

SSA

UBS

URL

UTM

19. List of Acronyms

- American Standard Code for Information Interchange

- BOReal Ecosystem-Atmosphere Study

- BOREAS Information System

- Compact Disk-Read-Only Memory

- Distributed Active Archive Center

- Diameter at breast height

- Earth Observing System

- EOS Data and Information System

- Geographic Information System

- Goddard Space Flight Center

- HyperText Markup Language

- National Aeronautics and Space

- Northern Study Area

- Old Black Spruce

- Old Jack Pine

- Oak Ridge National Laboratory

- Prince Albert National Park

- Southern Study Area

- Upland Black Spruce

- Uniform Resource Locator

- Universal Transverse Mercator

Administration

20. Document Information

20.1 Document Revision Date(s)

Written: 03-Apr- 1997

Last Updated: 02-Jun- 1999

20.2 Document Review Date(s)

BORIS Review: 18-Jun- 1997

Science Review: 27-Jan- 1998

20.3 Document ID

20.4 Citation

When using these data, please include the following acknowledgment as well as citations of

relevant papers in Section 17.2:

The efforts of Jim Ehleringer, University of Utah; Larry Flanagan, Carleton University; and J.

Renee Brooks, University of South Florida in collecting and providing these data are greatly

appreciated.

If using data from the BOREAS CD-ROM series, also reference the data as:

Ehleringer, J. and L. Flanagan, " Vegetation-Atmosphere CO2 and H20 Exchange Processes:

Stable Isotope Analyses." In Collected Data of The Boreal Ecosystem-Atmosphere Study. Eds. J.

Newcomer, D. Landis, S. Conrad, S. Curd, K. Huemmrich, D. Knapp, A. Morrell, J. Nickeson, A.

Papagno, D. Rinker, R. Strub, T. Twine, F. Hall, and P. Sellers. CD-ROM. NASA, 2000.

Page 13
Also,citetheBOREASCD-ROMsetas:

Newcomer,J.,D. Landis,S.Conrad,S.Curd,K. Huemmrich,D. Knapp,A. Morrell, J.

Nickeson,A. Papagno,D. Rinker,R. Strub,T. Twine,F.Hall, andP.Sellers,eds.CollectedDataof

TheBorealEcosystem-AtmosphereStudy.NASA.CD-ROM.NASA, 2000.

20.5 Document Curator

20.6 Document URL

Page 14

Form Approved

REPORT DOCUMENTATION PAGE OMB No 0704-0188

_mllBmaaBaBllm==

Public reporting burden for this collection of information is estimated to average 1 hour per response, incTuding the time for reviewing instructions, searching existing data sources,

gathering and maintaining the data needed, and completing and reviewing the collection of information Send comments regarding this burden estimate or any other aspect of this

collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for information Operations and Reports, 1215 Jefferson

Davis Highway, SUite I204, Arlington, VA 22202-4302, and to the Office of Management and Budget, Paperwork Reduction Project (0704-0188j, Washington, DC 20503.

1. AGENCY USE ONLY (Leave blank) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED

October 2000 Technical Memorandum

4. TITLE AND SUBTITLE 5. FUNDING NUMBERS

Technical Report Series on the Boreal Ecosystem-Atmosphere Study (BOREAS)

BOREAS TE-5 Tree Ring and Carbon Isotope Ratio Data

i i

6. AUTHOR(S)

Jim Ehleriinger, J. Renee Brooks and Larry Flanagan

Forrest G. Hall and Shelaine Curd, Editors

7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS (ES)

Goddard Space Flight Center

Greenbelt, Maryland 20771

9. SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS (ES)

National Aeronautics and Space Administration

Washington, DC 20546-0001

923

RTOP: 923-462-33-01

8. PEFORMING ORGANIZATION

REPORT NUMBER

2000-03136-0

10. SPONSORING / MONITORING

AGENCY REPORT NUMBER

TM---2000-209891

Vo1.142

11. SUPPLEM.ENTARY NOTES

J. Ehlenmger: University of Utah, Salt Lake City; J.R. Brooks: University of South Florida, Tampa;

L. Flanagan: University of Lethbridge, Lethbridge, Alberta, Canada; C. Curd: Raytheon ITSS, NASA

Goddard Space Flight Centeq Greenbelt_ Maryland

12a. DISTRIBUTION / AVAILABILITY STATEMENT 12b. DISTRIBUTION CODE

Unclassified-Unlimited

Subject Category: 43

Report available from the NASA Center for AeroSpace Information,

7121 Standard Drive, Hanover, MD 21076-1320. (301) 621-0390.

13. ABSTRACT (Maximum 200 words)

The BOREAS TE-5 team collected several data sets to investigate the vegetation-atmosphere CO 2 and

H20 exchange processes. These data include tree ring widths and cellulose carbon isotope data from

coniferous trees collected at the BOREAS NSA and SSA in 1993 and 1994 by the BOREAS TE-05

team. Ring width data are provided for both Picea mariana and Pinus banksiana. The carbon isotope

data are provided only for Pinus banksiana. The data are provided in tabular ASCII files.

14. SUBJECT TERMS

BOREAS, terrestrial ecology, tree ring data.

17. SECU RITY CLASSIFICATION

OF REPORT

Unclassified

NSN 7540-01-280-5500

18. SECURITY CLASSIFICATION

OF THIS PAGE

Unclassified

19. SECURITY CLASSIFICATION

OF ABSTRACT

Unclassified

S

15. NUMBER OF PAGES

14

16. PRICE CODE

20. LIMITATION OF ABSTRACl

UL

andard Form 298 (ReVl 2-89)

Prescribed by ANSI Std Z39,18

298-102