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Measurements of light, CO2, temperature, and humidity response curves were made by the BOREAS TE-04 team during the summary of 1994 using intact attached leaves of boreal forest species located in the BOREAS SSA. These measurements were conducted to calibrate models used to predict photosynthesis, stomatal conductance, and leaf respiration. The data can be used to construct plots of response functions or for parameterizing models. Parameter values suitable for application in SiB2 (Sellers et al., 1996) or the leaf model of Collatz et al. (1991) and programs can be obtained from the investigators.

A guide document which includes more information about this data set can be found at

ORNL DAAC maintains information on the entire BOREAS Project.

Data Citation:

Cite this data set as follows:

Berry, J. A., J. Collatz, J. Gamon, W. Fu, and A. Fredeen. 1998. BOREAS TE-04 Gas Exchange Data from Boreal Tree Species. Data set. Available on-line [] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A.


Ball, J.T. 1987. Calculations related to gas exchange. In: E. Zeiger, G.D. Farquhar and I.R. Cowan (Eds.), Stomatal Function, Stanford University Press, Stanford. pp 446-476.

Collatz, G.J., J. T. Ball, C. Grivet, and J.A. Berry. 1991. Physiological and environmental regulation of stomatal conductance, photosynthesis and transpiration: a model that includes a laminar boundary layer. Agricultural and Forest Meteorology, 54, 107-36.

Field, C.B., J. T. Ball, and J.A. Berry. 1989. Photosynthesis: principles and field techniques. In: Plant Physiological Ecology: Field Methods and Instrumentation, Edited by, R.W. Pearcy, J.R. Ehleringer, H.A. Mooney, P.W. Rundel. Chapman and Hall, London and New York, pp. 209 - 254.

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. and F. Hall. 1997. BOREAS Overview Paper. JGR BOREAS Special Issue, 201.

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. Hall, H. Margolis, B. Kelly, D. Baldocchi, G. den Hartog, J. Cihlar, M.G. Ryan, B. Goodison, P. Cril,l 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.

Sellers, P.J, D.R. Randall, G.J. Collatz, J.A. Berry, C.B. Field, D.A. Dazlich, and G.D. Collelo. 1996. A revised land-surface parameterization (SiB2) for GCMs. Part 1: Model formulation, Journal of Climate, 9, 676-705.

Data Format:

For information on Parameter/Variable Names, Variable Description/Definition, Units of Measurement, and Data File Format see the companion file

Document Information:

15-Sept-1998 (data citation revised on 24-Sep-2002)

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