Publications

Publications Found: 1373

Sensitivity Of Large-Footprint Lidar To Canopy Structure And Biomass In A Neotropical Rainforest
Drake, J. B., Dubayah, R. O., Knox, R. G., Clark, D. B., Blair, J.

Accurate estimates of the total biomass in terrestrial vegetation are important for carbon dynamics studies at a variety of scales. Although aboveground biomass is difficult to quantify over large areas using traditional techniques, lidar remote sensing holds great promise for biomass estimation because it directly measures components …


Journal: Remote Sensing Of Environment, Volume 81 (2-3): 378-392 (2002), ISBN . DOI: 10.1016/s0034-4257(02)00013-5 Sites: CR-Lse

Comparative Measurements Of Carbon Dioxide Fluxes From Two Nearby Towers In A Central Amazonian Rainforest: The Manaus Lba Site
Araújo, A. C., Nobre, A. D., Kruijt, B., Elbers, J. A., Dallarosa, R., Stefani, P., von Randow, C., Manzi, A. O., Culf, A. D., Gash, J. H. C., Valentini, R., Kabat, P.

Forests around Manaus have staged the oldest and the longest forest-atmosphere CO2 exchange studies made anywhere in the Amazon. Since July 1999 the exchange of CO2, water, and energy, as well as weather variables, have been measured almost continuously over two forests, 11 km apart, in the Cuieiras reserve near Manaus, Brazil. This …


Journal: Journal Of Geophysical Research, Volume 107 (D20): (2002), ISBN . DOI: 10.1029/2001JD000676 Sites: BR-Ma2

Carbon Exchange Of An Old-Growth Eastern Hemlock (Tsuga Canadensis) Forest In Central New England
Hadley, J. L., Schedlbauer, J. L.


Journal: Tree Physiology, Volume 22 (15-16): 1079-1092 (2002), ISBN . DOI: 10.1093/treephys/22.15-16.1079 Sites: US-Ha2

Fluxes of oxygenated volatile organic compounds from a ponderosa pine plantatio
Schade,G.W., Goldstein,A.H.

We present the first canopy-scale, continuous, long-term flux measurements of a suite of oxygenated volatile organic compounds (OVOCs). Fluxes were measured above a ponderosa pine plantation, adjacent to the Blodgett Forest Research Station (38°53′42.9″N, 120°37′57.9″W, 1315 m elevation), with a fully automated relaxed …


Journal: Journal of Geophysical Research-Atmospheres, Volume 106 (D3): 3111-3123 (2001), ISBN . DOI: 1029/2000JD900592 Sites: US-Blo

Interannual Variation Of Soil Respiration In Two New England Forests
Savage, K. E., Davidson, E. A.

Soil respiration is an important component of the annual carbon balance of forests, but few studies have addressed interannual variation in soil respiration. The objectives of this study were to investigate the seasonal and interannual variation in soil respiration, temperature, precipitation, and soil water content in two New England …


Journal: Global Biogeochemical Cycles, Volume 15 (2): 337-350 (2001), ISBN . DOI: 10.1029/1999gb001248 Sites: US-Ha1, US-Ho1

Year-Round Observations Of The Net Ecosystem Exchange Of Carbon Dioxide In A Native Tallgrass Prairie
Suyker, A. E., Verma, S. B.

An Ameriflux site was established in mid 1996 to study the exchange of CO2 in a native tallgrass prairie of north-central Oklahoma, USA. Approximately the first 20 months of measurements (using eddy covariance) are described here. This prairie, dominated by warm season C4 grasses, is typical of the central Kansas/northern …


Journal: Global Change Biology, Volume 7 (3): 279-289 (2001), ISBN . DOI: 10.1046/j.1365-2486.2001.00407.x Sites: US-Shd

Modeling CO2 And Water Vapor Exchange Of A Temperate Broadleaved Forest Across Hourly To Decadal Time Scales
Baldocchi, D. D., Wilson, K. B.

Fluxes of carbon dioxide, water and energy between a temperate deciduous forest and the atmosphere were quantified across time scales of hours, days, seasons, years and decades. This exercise was performed using stand-level eddy covariance flux measurements and a biophysical model, CANOAK. The CANOAK model was tested with measurements …


Journal: Ecological Modelling, Volume 142 (1-2): 155-184 (2001), ISBN . DOI: 10.1016/s0304-3800(01)00287-3 Sites: US-WBW

A Comparison Of Summertime Water And CO2 Fluxes Over Rangeland For Well Watered And Drought Conditions
Meyers, T. P.

Continuous measurements of the surface energy balance components (net radiation Rn, sensible heat flux H, latent heat flux LE, ground heat flux G, and CO2 fluxes began in early June of 1995 at the Little Washita Watershed, near Chickasha, Oklahoma. A severe drought during …


Journal: Agricultural And Forest Meteorology, Volume 106 (3): 205-214 (2001), ISBN . DOI: 10.1016/s0168-1923(00)00213-6 Sites: US-LWW

Boundary Layer Clouds And Vegetation–Atmosphere Feedbacks
Freedman, J. M., Fitzjarrald, D. R., Moore, K. E., Sakai, R. K.

An analysis of boundary layer cumulus clouds and their impact on land surface–atmosphere exchange is presented. Seasonal trends indicate that in response to increasing insolation and sensible heat flux, both the mixed-layer height (zi) …


Journal: Journal Of Climate, Volume 14 (2): 180-197 (2001), ISBN . DOI: 10.1175/1520-0442(2001)013<0180:BLCAVA>2.0.CO;2 Sites: US-Ha1

Spatial And Temporal Variation In Respiration In A Young Ponderosa Pine Forest During A Summer Drought
Law, B., Kelliher, F., Baldocchi, D., Anthoni, P., Irvine, J., Moore, D., Van Tuyl, S.

Respiration rates of heterogeneous forest canopies arise from needles, stems, roots and soil microbes. To assess the temporal and spatial variation in respiration rates of these components in a heterogeneous ponderosa pine forest canopy, and the processes that control these fluxes, we conducted an intensive field study during …


Journal: Agricultural And Forest Meteorology, Volume 110 (1): 27-43 (2001), ISBN . DOI: 10.1016/s0168-1923(01)00279-9 Sites: US-Me5