Publications

Filters: Sites: US-Blo
Clear Filters
Publications Found: 57

Influences Of Recovery From Clear-Cut, Climate Variability, And Thinning On The Carbon Balance Of A Young Ponderosa Pine Plantation
Misson, L., Tang, J., Xu, M., McKay, M., Goldstein, A.

From 1999 to 2002, the variations in carbon flux due to management practices (shrub removal, thinning) and climate variability were observed in a young ponderosa pine forest originated from clear-cutting and plantation in 1990. These measurements were done at the Blodgett Forest Ameriflux site located in the Sierra Nevada Mountains …


Journal: Agricultural And Forest Meteorology, Volume 130 (3-4): 207-222 (2005). DOI: 10.1016/j.agrformet.2005.04.001 Sites: US-Blo

Forest Thinning And Soil Respiration In A Ponderosa Pine Plantation In The Sierra Nevada
Tang, J., Qi, Y., Xu, M., Misson, L., Goldstein, A. H.

Soil respiration is controlled by soil temperature, soil water, fine roots, microbial activity, and soil physical and chemical properties. Forest thinning changes soil temperature, soil water content, and root density and activity, and thus changes soil respiration. We measured soil respiration monthly and soil temperature and volumetric …


Journal: Tree Physiology, Volume 25 (1): 57-66 (2005). DOI: 10.1093/treephys/25.1.57 Sites: US-Blo

Atmospheric Aerosol Light Scattering And Surface Wetness Influence The Diurnal Pattern Of Net Ecosystem Exchange In A Semi-Arid Ponderosa Pine Plantation
Misson, L., Lunden, M., McKay, M., Goldstein, A. H.

The diurnal variation of net ecosystem exchange (NEE) showed an unusual pattern at the Blodgett Forest Ameriflux site, with late afternoon NEE lower than early morning (indicating more uptake), while air temperature and atmospheric vapor pressure deficit were much higher. …


Journal: Agricultural And Forest Meteorology, Volume 129 (1-2): 69-83 (2005). DOI: 10.1016/j.agrformet.2004.11.008 Sites: US-Blo

Midday Values Of Gross CO2 Flux And Light Use Efficiency During Satellite Overpasses Can Be Used To Directly Estimate Eight-Day Mean Flux
Sims, D. A., Rahman, A. F., Cordova, V. D., Baldocchi, D. D., Flanagan, L. B., Goldstein, A. H., Hollinger, D. Y., Misson, L., Monson, R. K., Schmid, H. P., Wofsy, S. C., Xu, L.

Most satellites provide, at best, a single daily snapshot of vegetation and, at worst, these snapshots may be separated by periods of many days when the ground was obscured by cloud cover. Since vegetation carbon exchange can be very dynamic on diurnal and day-to-day timescales, the limited temporal resolution of satellite data is …


Journal: Agricultural And Forest Meteorology, Volume 131 (1-2): 1-12 (2005). DOI: 10.1016/j.agrformet.2005.04.006 Sites: CA-Let, US-Blo, US-Ho1, US-MMS, US-NR1, US-Ton, US-Var

Observations Of Total Alkyl Nitrates Within The Sacramento Urban Plume
Cleary, P. A., Murphy, J. G., Day, P. J. Wooldridge, D. A., Millet, D. B., McKay, M., Goldstein, A. H., Cohen, R. C.

During the summer of 2001, NO2, total peroxy nitrates (ΣPNs), total alkyl nitrates (ΣANs), HNO3, volatile organic compounds (VOC), CO2, O3, and meteorological variables were measured at Granite Bay, CA. The diurnal variation in ΣPNs, ΣANs and HNO3 were all strongly correlated …


Journal: Atmospheric Chemistry And Physics Discussions, Volume 5 (4): 4801-4843 (2005). DOI: 10.5194/acpd-5-4801-2005 Sites: US-Blo

Observations Of Oxidation Products Above A Forest Imply Biogenic Emissions Of Very Reactive Compounds
Holzinger, R., Lee, A., Paw, K. T., Goldstein, A. H.

Vertical gradients of mixing ratios of volatile organic compounds have been measured in a Ponderosa pine forest in Central California (38.90° N, 120.63° W, 1315m). These measurements reveal large quantities of previously unreported oxidation products of short lived biogenic precursors. The emission of biogenic precursors must be …


Journal: Atmospheric Chemistry And Physics, Volume 5 (1): 67-75 (2005). DOI: 10.5194/acp-5-67-2005 Sites: US-Blo

Seasonal Variability Of Monoterpene Emission Factors For A Ponderosa Pine Plantation In California
Holzinger, R., Lee, A., McKay, M., Goldstein, A. H.

Monoterpene fluxes have been measured over an 11 month period from June 2003 to April 2004. During all seasons ambient air temperature was the environmental factor most closely related to the measured emission rates. The monoterpene flux was modeled using a basal emission rate multiplied by an exponential function of a temperature, …


Journal: Atmospheric Chemistry And Physics Discussions, Volume 5 (5): 8791-8810 (2005). DOI: 10.5194/acpd-5-8791-2005 Sites: US-Blo

A Comparison Of New Measurements Of Total Monoterpene Flux With Improved Measurements Of Speciated Monoterpene Flux
Lee, A., Schade, G. W., Holzinger, R., Goldstein, A. H.

Many monoterpenes have been identified in forest emissions using gas chromatography (GC). Until now, it has been impossible to determine whether all monoterpenes are appropriately measured using GC techniques. We used a proton transfer reaction mass spectrometer (PTR-MS) coupled with the eddy covariance (EC) technique to measure …


Journal: Atmospheric Chemistry And Physics, Volume 5 (2): 505-513 (2005). DOI: 10.5194/acp-5-505-2005 Sites: US-Blo

A Comparison Of Three Approaches To Modeling Leaf Gas Exchange In Annually Drought-Stressed Ponderosa Pine Forests
Misson, L., Panek, J. A., Goldstein, A. H.
We tested, compared and modified three models of stomatal conductance at the leaf level in a forest ecosystem where drought stress is a major factor controlling forest productivity. The models were tested against 2 years (1999 and 2000) of leaf-level measurements on ponderosa pine (Pinus ponderosaDougl. …


Journal: Tree Physiology, Volume 24 (5): 529-541 (2004). DOI: 10.1093/treephys/24.5.529 Sites: US-Blo

Associations Between Carbon Isotope Ratios Of Ecosystem Respiration, Water Availability And Canopy Conductance
McDowell, N. G., Bowling, D. R., Schauer, A., Irvine, J., Bond, B. J., Law, B. E., Ehleringer, J. R.

We tested the hypothesis that the stable carbon isotope signature of ecosystem respiration (δ13CR) was regulated by canopy conductance (Gc) using weekly Keeling plots (n=51) from a semiarid old-growth ponderosa pine (Pinus ponderosa) forest in Oregon, USA. For …


Journal: Global Change Biology, Volume 10 (10): 1767-1784 (2004). DOI: 10.1111/j.1365-2486.2004.00837.x Sites: US-Blo, US-Me4