Publications

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Publications Found: 57

Relative Importance Of Local And Regional Controls On Coupled Water, Carbon, And Energy Fluxes
Albertson, J. D., Katul, G. G., Wiberg, P.

This paper reports the first effort to include carbon, water, and heat exchange in a Large Eddy Simulation (LES) model for 3D canopy flows with dynamic response of leaf temperature and stomatal aperture. The LES model simulates eddy motion from 3D, transient integration …


Journal: Advances In Water Resources, Volume 24 (9-10): 1103-1118 (2001), ISBN . DOI: 10.1016/s0309-1708(01)00042-2 Sites: US-Dk3

Modelling Assimilation And Intercellular CO2 From Measured Conductance: A Synthesis Of Approaches
Katul, G. G., Ellsworth, D. S., Lai, C.

A spectrum of models that estimate assimilation rate A from intercellular carbon dioxide concentration (Ci) and measured stomatal conductance to CO2 (gc) were investigated using leaf-level gas exchange measurements. The gas exchange measurements were performed in a uniform loblolly …


Journal: Plant, Cell And Environment, Volume 23 (12): 1313-1328 (2000), ISBN . DOI: 10.1046/j.1365-3040.2000.00641.x Sites: US-Dk3

The Dynamic Role Of Root-Water Uptake In Coupling Potential To Actual Transpiration
Lai, C., Katul, G.

The relationship between actual (Eact) and potential (Ep) transpiration above a grass-covered forest clearing was investigated numerically and experimentally from simultaneous measurements of soil moisture content profiles, mean meteorological …


Journal: Advances In Water Resources, Volume 23 (4): 427-439 (2000), ISBN . DOI: 10.1016/s0309-1708(99)00023-8 Sites: US-Dk3

Simulated Nitrogen Cycling Response To Elevated CO2 In Pinus Taeda And Mixed Deciduous Forests
Johnson, D. W.

Interactions between elevated CO2 and N cycling were explored with a nutrient cycling model (NuCM, Johnson et al. 1993, 1995) for a Pinus taeda L. site at Duke University, North Carolina, and a mixed deciduous site at Walker Branch, Tennessee. The simulations tested whether N limitation would prevent growth increases …


Journal: Tree Physiology, Volume 19 (4-5): 321-327 (1999), ISBN . DOI: 10.1093/treephys/19.4-5.321 Sites: US-Dk3

Effects Of CO2 Enrichment On The Photosynthetic Light Response Of Sun And Shade Leaves Of Canopy Sweetgum Trees (Liquidambar Styraciflua) In A Forest Ecosystem
Herrick, J. D., Thomas, R. B.

To investigate whether sun and shade leaves respond differently to CO2 enrichment, we examined photosynthetic light response of sun and shade leaves in canopy sweetgum (Liquidambar styraciflua L.) trees growing at ambient and elevated (ambient + 200 μl l−1) atmospheric CO2 in the Brookhaven …


Journal: Tree Physiology, Volume 19 (12): 779-786 (1999), ISBN . DOI: 10.1093/treephys/19.12.779 Sites: US-Dk3

A Lagrangian Dispersion Model For Predicting CO2 Sources, Sinks, And Fluxes In A Uniform Loblolly Pine (Pinus Taeda L.) Stand
Katul, G., Oren, R., Ellsworth, D., Hsieh, C., Phillips, N., Lewin, K.

A canopy Lagrangian turbulent scalar transport model for predicting scalar fluxes, sources, and sinks within a forested canopy was tested using CO2 concentration and flux measurements. The model formulation is based on the localized near-field theory (LNF) proposed by Raupach [1989a, b]. Using the measured mean …


Journal: Journal Of Geophysical Research: Atmospheres, Volume 102 (D8): 9309-9321 (1997), ISBN . DOI: 10.1029/96jd03785 Sites: US-Dk3

Leaf And Canopy Responses To Elevated CO2 In A Pine Forest Under Free-Air CO2 Enrichment
Ellsworth, D. S., Oren, R., Huang, C., Phillips, N., Hendrey, G. R.

Physiological responses to elevated CO2 at the leaf and canopy-level were studied in an intact pine (Pinus taeda) forest ecosystem exposed to elevated CO2 using a free-air CO2 enrichment (FACE) technique. Normalized canopy water-use of trees exposed to elevated …


Journal: Oecologia, Volume 104 (2): 139-146 (1995), ISBN . DOI: 10.1007/bf00328578 Sites: US-Dk3