Publications

Publications Found: 1437

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). DOI: 10.1016/s0168-1923(00)00123-4 Sites: US-LWW

Seasonal And Interannual Variability Of Energy Fluxes Over A Broadleaved Temperate Deciduous Forest In North America
Wilson, K. B., Baldocchi, D. D.

The components of the surface energy balance were measured for 3 years over a broadleaved deciduous forest using the eddy covariance technique. Within years, the magnitude and distribution of fluxes was controlled by seasonal changes in solar radiation, drought, as well as leaf emergence and senescence. Evapotranspiration increased …


Journal: Agricultural And Forest Meteorology, Volume 100 (1): 1-18 (2000). DOI: 10.1016/s0168-1923(99)00088-x Sites: US-WBW

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). DOI: 10.1016/s1352-2310(00)00321-6 Sites: US-Blo

Surface Heat Flux Estimation With Wind-Profiler/RASS And Radiosonde Observations
Jacobs, J. M., Coulter, R. L., Brutsaert, W.

A bulk ABL similarity approach was used to make regional estimates of the sensible heat flux by combining surface temperature measurements with mixed layer temperature and wind speed profiles. The mixed layer profiles were measured by a 915 MHz Profiler/Radio Acoustic Sounding …


Journal: Advances In Water Resources, Volume 23 (4): 339-348 (2000). DOI: 10.1016/s0309-1708(99)00028-7 Sites: US-Wlr

Long-Term Impacts Of Agriculture On Soil Carbon And Nitrogen In New England Forests
Compton, J. E., Boone, R. D.

Abandonment and reforestation of agricultural lands has been a major influence on the landscape of eastern North America. Cultivation and soil amendments can dramatically alter soil nutrient pools and cycling, yet few studies have examined the long-term (>50 yr) influence of pasturing and cultivation on soil processes in the forests …


Journal: Ecology, Volume 81 (8): 2314-2330 (2000). DOI: 10.1890/0012-9658(2000)081[2314:ltioao]2.0.co;2 Sites: US-LPH

Transpiration And Whole-Tree Conductance In Ponderosa Pine Trees Of Different Heights
Ryan, M. G., Bond, B. J., Law, B. E., Hubbard, R. M., Woodruff, D., Cienciala, E., Kucera, J.

Changes in leaf physiology with tree age and size could alter forest growth, water yield, and carbon fluxes. We measured tree water flux (Q) for 14 ponderosa pine trees in two size classes (12 m tall and ∼40 years old, …


Journal: Oecologia, Volume 124 (4): 553-560 (2000). DOI: 10.1007/s004420000403 Sites: US-Me4

Dynamics Of Isotopic Exchange Of Carbon Dioxide In A Tennessee Deciduous Forest
Bowling, D. R., Baldocchi, D. D., Monson, R. K.

The combination of isotopic measurements and micrometeorological flux measurements is a powerful new approach that will likely lead to new insight into the dynamics of CO2 exchange between terrestrial …


Journal: Global Biogeochemical Cycles, Volume 13 (4): 903-922 (1999). DOI: 10.1029/1999gb900072 Sites: US-WBW

Photosynthetic Acclimation To Elevated Atmospheric CO2 Concentration In The Florida Scrub-Oak Species Quercus Geminata And Quercus Myrtifolia Growing In Their Native Environment
Li, J., Dijkstra, P., Hinkle, C. R., Wheeler, R. M., Drake, B. G.

Long-term effects of elevated CO2 concentration (ambient plus 350 μmol mol−1) on leaf photosynthetic acclimation of two species of a scrub-oak community, Quercus myrtifolia Willd. and Quercus geminata Small, were studied. Plants of both species were grown in open-top chambers in their natural …


Journal: Tree Physiology, Volume 19 (4-5): 229-234 (1999). DOI: 10.1093/treephys/19.4-5.229 Sites: US-KS2

Effects Of Climatic Variability On The Annual Carbon Sequestration By A Boreal Aspen Forest
Chen, W. J., Black, T. A., Yang, P. C., Barr, A. G., Neumann, H. H., Nesic, Z., Blanken, P. D., Novak, M. D., Eley, J., Ketler, R. J., Cuenca, R.

To evaluate the carbon budget of a boreal deciduous forest, we measured CO2 fluxes using the eddy covariance technique above an old aspen (OA) forest in Prince Albert National Park, Saskatchewan, Canada, in 1994 and 1996 as part of the Boreal Ecosystem-Atmosphere Study (BOREAS). We found that the OA forest is a strong …


Journal: Global Change Biology, Volume 5 (1): 41-53 (1999). DOI: 10.1046/j.1365-2486.1998.00201.x Sites: CA-Oas

Effect Of Spring Burning On The Surface Energy Balance In A Tallgrass Prairie
Bremer, D. J., Ham, J. M.

Spring burning of dead biomass in tallgrass prairie is a common practice that may influence heat and water vapor transport from the landscape. Bowen ratio methods were used to measure the surface energy balances and evapotranspiration (ET) from burned (B) and unburned (UB) prairie near Manhattan, KS, USA. Data were collected from …


Journal: Agricultural And Forest Meteorology, Volume 97 (1): 43-54 (1999). DOI: 10.1016/s0168-1923(99)00034-9 Sites: US-KFB, US-Kon