Publications

Filters: Sites: US-WBW
Clear Filters
Publications Found: 70

A Numerical Model For Simulating The Radiation Regime Within A Deciduous Forest Canopy
Wang, H., Baldocchi, D. D.

A numerical model that simulates the radiation regime inside a fully leafed and leafless deciduous forest canopy is discussed and tested. The model incorporates features which account for the vertical variation in leaf inclination angles and penumbral effects; these features have been experimentally shown to significantly influence …


Journal: Agricultural And Forest Meteorology, Volume 46 (4): 313-337 (1989). DOI: 10.1016/0168-1923(89)90034-8 Sites: US-WBW

Turbulent Transfer In A Deciduous Forest
Baldocchi, D. D.
Carbon dioxide, water vapor and other passive scalars are physically transferred between a plant canopy and the atmosphere by turbulence. Intense and intermittent sweep and ejection events transfer most of the mass. Although the capacity for turbulence to transfer material is high, mass transfer is coupled …


Journal: Tree Physiology, Volume 5 (3): 357-377 (1989). DOI: 10.1093/treephys/5.3.357 Sites: US-WBW

Turbulence Structure In A Deciduous Forest
Baldocchi, D. D., Meyers, T. P.

Three-dimensional wind velocity components were measured at two levels above and at six levels within a fully-leafed deciduous forest. Greatest shear occurs in the upper 20% of the canopy, where over 70% of the foliage is concentrated. The turbulence structure …


Journal: Boundary-Layer Meteorology, Volume 43 (4): 345-364 (1988). DOI: 10.1007/bf00121712 Sites: US-WBW

A Spectral And Lag-Correlation Analysis Of Turbulence In A Deciduous Forest Canopy
Baldocchi, D. D., Meyers, T. P.

The processes influencing turbulence in a deciduous forest and the relevant length and time scales are investigated with spectral and cross-correlation analysis. Wind velocity power spectra were computed from three-dimensional wind velocity measurements …


Journal: Boundary-Layer Meteorology, Volume 45 (1-2): 31-58 (1988). DOI: 10.1007/bf00120814 Sites: US-WBW

Measuring Biosphere-Atmosphere Exchanges Of Biologically Related Gases With Micrometeorological Methods
Baldocchi, D. D., Hicks, B. B., Meyers, T. P.

Ecologists are expected to play an important role in future studies of the biosphere/atmosphere exchange of materials associated with the major biogeochemical cycles and climate. Most studies of material …


Journal: Ecology, Volume 69 (5): 1331-1340 (1988). DOI: 10.2307/1941631 Sites: US-WBW

A Canopy Stomatal Resistance Model For Gaseous Deposition To Vegetated Surfaces
Baldocchi, D. D., Hicks, B. B., Camara, P.

A gaseous deposition model, based on a realistic canopy stomatal resistance submodel, is described, analyzed and tested. This model is designed as one of a hierarchy of simulations, leading up to a “big-leaf” model of the processes contributing to the exchange of trace …


Journal: Atmospheric Environment, Volume 21 (1): 91-101 (1987). DOI: 10.1016/0004-6981(87)90274-5 Sites: US-WBW

Eddy Fluxes Of CO2, Water Vapor, And Sensible Heat Over A Deciduous Forest
Verma, S. B., Baldocchi, D. D., Anderson, D. E., Matt, D. R., Clement, R. J.

Fluxes of CO2, latent heat and sensible heat were measured above a fully-leafed deciduous forest in eastern Tennessee with the eddy correlation technique. These are among the first reported observations over such a surface. The influences of solar …


Journal: Boundary-Layer Meteorology, Volume 36 (1-2): 71-91 (1986). DOI: 10.1007/bf00117459 Sites: US-WBW

Seasonal Variation In The Statistics Of Photosynthetically Active Radiation Penetration In An Oak-Hickory Forest
Baldocchi, D., Hutchison, B., Matt, D., McMillen, R.

The seasonal variability in the frequency distribution (FD) and higher order moments (e.g., standard deviation, skewness and kurtosis) of photosynthetically active radiation (PAR) penetration in an oak—hickory forest were examined. In a leafless, wintertime forest the …


Journal: Agricultural And Forest Meteorology, Volume 36 (4): 343-361 (1986). DOI: 10.1016/0168-1923(86)90013-4 Sites: US-WBW

The Architecture Of A Deciduous Forest Canopy In Eastern Tennessee, U.S.A.
Hutchison, B. A., Matt, D. R., McMillen, R. T., Gross, L. J., Tajchman, S. J., Norman, J. M.


Journal: The Journal Of Ecology, Volume 74 (3): 635-676 (1986). DOI: 10.2307/2260387 Sites: US-WBW

On Estimating Canopy Photosynthesis And Stomatal Conductance In A Deciduous Forest With Clumped Foliage
Baldocchi, D. D., Hutchison, B. A.
The foliage in a fully-leafed deciduous forest canopy is clumped. Consequently, theory indicates that the probability of beam penetration will be estimated more accurately with a model based on the negative binomial distribution than with a model based on the Poisson distribution, incorporating an assumption …


Journal: Tree Physiology, Volume 2 (1-2-3): 155-168 (1986). DOI: 10.1093/treephys/2.1-2-3.155 Sites: US-WBW