Publications

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Publications Found: 82

Greenness Indices From Digital Cameras Predict The Timing And Seasonal Dynamics Of Canopy-Scale Photosynthesis
Toomey, M., Friedl, M. A., Frolking, S., Hufkens, K., Klosterman, S., Sonnentag, O., Baldocchi, D. D., Bernacchi, C. J., Biraud, S. C., Bohrer, G., Brzostek, E., Burns, S. P., Coursolle, C., Hollinger, D. Y., Margolis, H. A., McCaughey, H., Monson, R. K., Munger, J. W., Pallardy, S., Phillips, R. P., Torn, M. S., Wharton, S., Zeri, M., Richardson, A. D.

The proliferation of digital cameras co‐located with eddy covariance instrumentation provides new opportunities to better understand the relationship between canopy phenology and the seasonality of canopy photosynthesis. In this paper we analyze the abilities and limitations of canopy color metrics measured by digital repeat photography …


Journal: Ecological Applications, Volume 25 (1): 99-115 (2015). DOI: http://doi.org/10.1890/14-0005.1 Sites: US-ARM, US-Bar, US-Ha1, US-Ho1, US-MMS, US-MOz, US-NR1, US-UMB, US-UMd, US-Var, US-Wrc

Fluxes Of Energy, Water, And Carbon Dioxide From Mountain Ecosystems At Niwot Ridge, Colorado
Knowles, J. F., Burns, S. P., Blanken, P. D., Monson, R. K.


Journal: Plant Ecology & Diversity, Volume 8 (5-6): 663-676 (2015). DOI: 10.1080/17550874.2014.904950 Sites: US-NR1, US-NR3, US-NR4

Fluxes Of Energy, Water, And Carbon Dioxide From Mountain Ecosystems At Niwot Ridge, Colorado
Knowles, J. F., Burns, S. P., Blanken, P. D., Monson, R. K.


Journal: Plant Ecology & Diversity, Volume 8 (5-6): 663-676 (2015). DOI: 10.1080/17550874.2014.904950 Sites: US-NR1

Fluxes Of Energy, Water, And Carbon Dioxide From Mountain Ecosystems At Niwot Ridge, Colorado
Knowles, J. F., Burns, S. P., Blanken, P. D., Monson, R. K.

Background: The eddy covariance (EC) technique provides a direct measure of water vapour and carbon dioxide fluxes between ecosystems and the atmosphere.

Aims: This review article highlights the findings of various studies that have integrated EC observations into basic meteorological, hydrological and ecological research questions …


Journal: Plant Ecology & Diversity, Volume 8 (5-6): 663-676 (2015). DOI: 10.1080/17550874.2014.904950 Sites: US-NR1

The Relative Contributions Of Alpine And Subalpine Ecosystems To The Water Balance Of A Mountainous, Headwater Catchment
Knowles, J. F., Harpold, A. A., Cowie, R., Zeliff, M., Barnard, H. R., Burns, S. P., Blanken, P. D., Morse, J. F., Williams, M. W.

Climate change is affecting the hydrology of high‐elevation mountain ecosystems, with implications for ecosystem functioning and water availability to downstream populations. We directly and continuously measured precipitation and evapotranspiration (ET) from both subalpine forest and alpine tundra portions of a single catchment, …


Journal: Hydrological Processes, Volume 29 (22): 4794-4808 (2015). DOI: 10.1002/hyp.10526 Sites: US-NR1

Does day and night sampling reduce spurious correlation between canopy photosynthesis and ecosystem respiration?
Dennis Baldocchi, Cove Sturtevant

It is necessary to partition eddy covariance measurements of carbon dioxide exchange into its offsetting gross fluxes, canopy photosynthesis, and ecosystem respiration, to understand the biophysical controls on the net fluxes. And independent estimates of canopy photosynthesis (G) and ecosystem respiration (R) are needed to validate …


Journal: Agricultural and Forest Meteorology, Volume 207: 117-126 (2015). DOI: 10.1016/j.agrformet.2015.03.010 Sites: CA-Ca1, CA-Ca2, CA-Ca3, CA-Let, CA-Mer, CA-NS1, CA-NS3, CA-NS5, CA-NS6, CA-NS7, CA-Oas, CA-Obs, CA-Ojp, CA-Qcu, CA-Qfo, CA-SJ2, CA-SJ3, CA-TP4, CA-WP1, US-ARM, US-Aud, US-Bo1, US-Ho1, US-Ho2, US-IB2, US-KS2, US-MMS, US-MOz, US-NC2, US-NR1, US-SO2, US-SO3, US-SO4, US-SP2, US-SP3, US-SRM, US-Ton, US-Tw3, US-UMB, US-Var, US-WBW, US-Wkg, US-Wrc

The Influence Of Warm-Season Precipitation On The Diel Cycle Of The Surface Energy Balance And Carbon Dioxide At A Colorado Subalpine Forest Site
Burns, S. P., Blanken, P. D., Turnipseed, A. A., Hu, J., Monson, R. K.


Journal: Biogeosciences, Volume 12 (23): 7349-7377 (2015). DOI: 10.5194/bg-12-7349-2015 Sites: US-NR1

Ecological Processes Dominate The13c Land Disequilibrium In A Rocky Mountain Subalpine Forest
Bowling, D. R., Ballantyne, A. P., Miller, J. B., Burns, S. P., Conway, T. J., Menzer, O., Stephens, B. B., Vaughn, B. H.


Journal: Global Biogeochemical Cycles, Volume 28 (4): 352-370 (2014). DOI: 10.1002/2013GB004686 Sites: US-NR1

Snow Temperature Changes Within A Seasonal Snowpack And Their Relationship To Turbulent Fluxes Of Sensible And Latent Heat
Burns, S. P., Molotch, N. P., Williams, M. W., Knowles, J. F., Seok, B., Monson, R. K., Turnipseed, A. A., Blanken, P. D.

Snowpack temperatures from a subalpine forest below Niwot Ridge, Colorado, are examined with respect to atmospheric conditions and the 30-min above-canopy and subcanopy eddy covariance fluxes of sensible Qh and latent Qe heat. In the lower snowpack, daily snow temperature changes greater than 1°C day−1 occurred about 1–2 times …


Journal: Journal Of Hydrometeorology, Volume 15 (1): 117-142 (2014). DOI: 10.1175/JHM-D-13-026.1 Sites: US-NR1

Characterizing The Diurnal Patterns of Errors in The Prediction of Evapotranspiration by Several Land-Surface Models: An Nacp Analysis
Matheny, A. M., Bohrer, G., Stoy, P. C., Baker, I. T., Black, A. T., Desai, A. R., Dietze, M. C., Gough, C. M., Ivanov, V. Y., Jassal, R. S., Novick, K. A., Schäfer, K. V., Verbeeck, H.


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 119 (7): 1458-1473 (2014). DOI: 10.1002/2014JG002623 Sites: CA-Ca1, CA-Gro, CA-Let, CA-Oas, CA-Ojp, CA-Qfo, US-ARM, US-Dk3, US-Ha1, US-Ho1, US-IB2, US-Me2, US-MMS, US-MOz, US-Ne1, US-Ne2, US-Ne3, US-NR1, US-PFa, US-Syv, US-Ton, US-UMB, US-Var, US-WCr