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Spectral reflectance of the forest understory at the ground level, in three boreal forest sites of Northern Manitoba (56 degrees N latitude and 98 degrees W longitude), were obtained and analyzed. The objective of the study was to estimate light levels inside the forest canopy and to link these estimates with airborne images taken above the canopy, in order to tie the photosynthetic experiments and models with the remotely sensed measurements. The Boreal Ecosystem-Atmospheric Study (BOREAS) Terrestrial Ecosystem (TE)-09 project contained several sub-projects designed to work together to meet this goal: a high-resolution canopy modeling component, extensive measurements of canopy architecture and structure, photometric measurements inside the canopy, and spectral measurements of both the canopy and the understory.

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:

S., Jan, G. Edwards, A. Viau, and K. Thomson. 1998. BOREAS TE-09 in situ Understory Spectral Reflectance within the NSA. Data set. Available on-line []from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee, U.S.A. doi:10.3334/ORNLDAAC/338.


Deering, D. W. et al., 1992. "Prairie Grassland Bi directional Reflectances Measured by Different Instruments at the FIFE Site." Journal of Geophysical Research 97, pp. 18872 903.

Goward, S. N., K. F. Huemmrich, and R. H. Waring, 1994. "Visible Near Infrared Spectral Reflectance of Landscape Components in Western Oregon." Remote Sensing of Environment 47, pp. 190 203.

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 Special Issue.

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

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

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 earlyresults from the 1994 field year. Bulletin of the American Meteorological Society. 76(9):1549-1577.

Supronowicz, J., G. Edwards, K. P. B. Thomson, and A. Viau, 1996. "Spectral Reflectance of Forest Understory in Various Types of Forests within the BOREAS Northern Study Area in Manitoba." Submitted for publication in the Canadian Journal of Remote Sensing.

Vinogradov, B. V. 1969. "Remote Sensing of the Arid Zone Vegetation in the Visible Spectrum for Studying the Productivity." Proceedings of the Sixth International symposium on Remote Sensing of Environment. Ann Arbor, MI, pp. 1237-50.

Walter-Shea, E. A. et al., 1992. "Biophysical Properties Affecting Vegetative Canopy Reflectance and Absorbed Photosynthetically Active Radiation at the FIFE Site." Journal of Geophysical Research 97, pp. 18925-34.

White, H. P. and J. R. Miller, 1995. "Report on Seasonal Change in the Mean Understory Reflectance at BOREAS Flux Tower Sites." Private Communication and to be published.

Data Format:

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

Document Information:

23-Sept-1998 (data citation revised on 25-Sep-2002)

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