Publications

Publications Found: 1371
Measuring And Modelling Seasonal Variation Of Carbon Dioxide And Water Vapour Exchange Of A Pinus Ponderosa Forest Subject To Soil Water Deficit
Law, B. E., Williams, M., Anthoni, P. M., Baldocchi, D. D., Unsworth, M. H.

We conducted ecosystem carbon and water vapour exchange studies in an old-growth Pinus ponderosaforest in the Pacific North-west region of the United States. The canopy is heterogeneous, with tall multiaged trees and an open, clumped canopy with low leaf area. Carbon assimilation can occur throughout relatively mild winters, …


Journal: Global Change Biology, Volume 6 (6): 613-630 (2000), ISBN . DOI: 10.1046/j.1365-2486.2000.00339.x Sites: US-Me5

Estimating CO2 Flux From Snowpacks At Three Sites In The Rocky Mountains
McDowell, N. G., Marshall, J. D., Hooker, T. D., Musselman, R.
Soil surface CO2 flux (Fs) is the dominant respiratory flux in many temperate forest ecosystems. Snowpacks increase this dominance by insulating the soil against the low temperature to which aboveground components are exposed. However, measurement of Fs


Journal: Tree Physiology, Volume 20 (11): 745-753 (2000), ISBN . DOI: 10.1093/treephys/20.11.745 Sites: US-GLE

Effects Of Climate Variability On The Carbon Dioxide, Water, And Sensible Heat Fluxes Above A Ponderosa Pine Plantation In The Sierra Nevada (CA)
Goldstein, A., Hultman, N., Fracheboud, J., Bauer, M., Panek, J., Xu, M., Qi, Y., Guenther, A., Baugh, W.

Fluxes of CO2, water vapor, and sensible heat were measured by the eddy covariance method above a young ponderosa pine plantation in the Sierra Nevada Mountains (CA) over two growing seasons (1 June–10 September 1997 and 1 May–30 October 1998). The Mediterranean-type climate of California is characterized by a protracted …


Journal: Agricultural And Forest Meteorology, Volume 101 (2-3): 113-129 (2000), ISBN . DOI: 10.1016/s0168-1923(99)00168-9 Sites: US-Blo

Quantifying Biogenic And Anthropogenic Contributions To Acetone Mixing Ratios In A Rural Environment
Goldstein, A. H., Schade, G. W.

Acetone was one of the most abundant volatile organic compounds (VOCs) observed in the Sierra Nevada Mountains (California, USA). Mixing ratios were measured hourly above a ponderosa pine plantation using an automated in situ dual-channel GC-FID system throughout July 1997, …


Journal: Atmospheric Environment, Volume 34 (29-30): 4997-5006 (2000), ISBN . DOI: 10.1016/s1352-2310(00)00321-6 Sites: US-Blo

Ozone Deposition To A Ponderosa Pine Plantation In The Sierra Nevada Mountains (CA): A Comparison Of Two Different Climatic Years
Bauer, M. R., Hultman, N. E., Panek, J. A., Goldstein, A. H.

Ponderosa pine is one of the most sensitive species to ozone and a dominant species in the Sierra Nevada Mountains. To assess the factors controlling ozone deposition to the forest and to study the forest …


Journal: Journal Of Geophysical Research: Atmospheres, Volume 105 (D17): 22123-22136 (2000), ISBN . DOI: 10.1029/2000jd900168 Sites: US-Blo

On Measuring And Modeling Energy Fluxes Above The Floor Of A Homogeneous And Heterogeneous Conifer Forest
Baldocchi, D. D., Law, B. E., Anthoni, P. M.

Information on mass and energy exchange at the soil surface under vegetation is a critical component of micrometeorological, climate, biogeochemical and hydrological models. Under sparse boreal and western conifer forests as much as 50% of incident solar energy reaches the soil surface. How this energy is partitioned into …


Journal: Agricultural And Forest Meteorology, Volume 102 (2-3): 187-206 (2000), ISBN . DOI: 10.1016/s0168-1923(00)00098-8 Sites: CA-Ojp, US-Me4

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

Remote Sensing Of Photosynthetic-Light-Use Efficiency Of Boreal Forest
Nichol, C. J., Huemmrich, K. F., Black, T., Jarvis, P. G., Walthall, C. L., Grace, J., Hall, F. G.

Using a helicopter-mounted portable spectroradiometer and continuous eddy covariance data we were able to evaluate the photochemical reflectance index (PRI) as an indicator of canopy photosynthetic light-use efficiency (LUE) in four boreal forest species during the Boreal …


Journal: Agricultural And Forest Meteorology, Volume 101 (2-3): 131-142 (2000), ISBN . DOI: 10.1016/s0168-1923(99)00167-7 Sites: CA-Man, CA-Oas, CA-Obs, CA-Ojp

Effect Of Daily Minimum Temperature On Photosynthesis In Eastern Hemlock (Tsuga Canadensis L.) In Autumn And Winter
Hadley, J. L.


Journal: Arctic, Antarctic, And Alpine Research, Volume 32 (4): 368-374 (2000), ISBN . DOI: 10.2307/1552384 Sites: US-Ha2

Correcting Eddy-Covariance Flux Underestimates Over A Grassland
Twine, T., Kustas, W., Norman, J., Cook, D., Houser, P., Meyers, T., Prueger, J., Starks, P., Wesely, M.

Independent measurements of the major energy balance flux components are not often consistent with the principle of conservation of energy. This is referred to as a lack of closure of the surface energy balance. Most results in the literature have shown the sum of sensible …


Journal: Agricultural And Forest Meteorology, Volume 103 (3): 279-300 (2000), ISBN . DOI: 10.1016/s0168-1923(00)00123-4 Sites: US-LWW