Index Catalog // ScholarsArchive@OSU

Seasonal variation of photosynthetic model parameters and leaf area index from global Fluxnet eddy covariance data

Creator:: Groenendijk, M., Dolman, A. J., Ammann, C., Arneth, A., Cescatti, A., Dragoni, D., Gash, J. H. C., Gianelle, D., Gioli, B., Kiely, G., Knohl, A., Law, B. E., Lund, M., Marcolla, B., van der Molen, M. K., Montagnani, L., Moors, E., Richardson, A. D., Roupsard, O., Verbeeck, H., and Wohlfahrt, G.
Abstract:: Global vegetation models require the photosynthetic parameters, maximum carboxylation capacity (V[subscript cm]), and quantum yield (alpha) to parameterize their plant functional types (PFTs). The purpose of this work is to determine how much the scaling of the parameters from leaf to ecosystem level through a seasonally varying leaf area index...
Resource Type:: Article
Full Text:: E. Moors,17 A. D. Richardson,18 O. Roupsard,19,20 H. Verbeeck,21 and G. Wohlfahrt22 Received 20

Evaluation of continental carbon cycle simulations with North American flux tower observations

Creator:: Raczka, Brett M., Davis, Kenneth J., Huntzinger, Deborah, Neilson, Ronald P., Poulter, Benjamin, Richardson, Andrew D., Xiao, Jingfeng, Baker, Ian T., Ciais, Philippe, Keenan, Trevor F., Law, Beverly, Post, Wilfred M., Ricciuto, Daniel, Schaefer, Kevin, Tian, Hanqin, Tomelleri, Enrico, Verbeeck, Hans, and Viovy, Nicolas
Abstract:: Terrestrial biosphere models can help identify physical processes that control carbon dynamics, including land–atmosphere CO₂ fluxes, and have great potential to predict the terrestrial ecosystem response to changing climate. The skill of models that provide continental-scale carbon flux estimates, however, remains largely untested. This paper evaluates the performance of continental-scale...
Resource Type:: Article
Full Text:: Verbeeck, and Nicolas Viovy 2013. Evaluation of continental carbon cycle simulations with North American

Evaluating the agreement between measurements and models of net ecosystem exchange at different times and timescales using wavelet coherence: an example using data from the North American Carbon Program Site-Level Interim Synthesis

Creator:: Stoy, P. C., Dietze, M. C., Richardson, A. D., Vargas, R., Barr, A. G., Anderson, R. S., Arain, M. A., Baker, Ian T., Black, T. Andrew, Chen, J. M., Cook, R. B., Gough, C. M., Grant, R. F., Hollinger, D. Y., Izaurralde, R. C., Kucharik, C. J., Lafleur, P., Law, B. E., Liu, S., Lokupitiya, E., Luo, Y., Munger, J. W., Peng, C., Poulter, B., Price, D. T., Ricciuto, D. M., Riley, W. J., Sahoo, A. K., Schaefer, K., Schwalm, C. R., Tian, H., Verbeeck, H., and Weng, E.
Abstract:: Earth system processes exhibit complex patterns across time, as do the models that seek to replicate these processes. Model output may or may not be significantly related to observations at different times and on different frequencies. Conventional model diagnostics provide an aggregate view of model–data agreement, but usually do not...
Resource Type:: Article
Full Text:: . Schwalm29, H. Tian30, H. Verbeeck31, and E. Weng32 1Department of Land Resources and Environmental Sciences

A model-data comparison of gross primary productivity: Results from the North American Carbon Program site synthesis

Creator:: Schaefer, Kevin, Schwalm, Christopher R., Williams, Chris, Arain, M. Altaf, Barr, Alan, Chen, Jing M., Davis, Kenneth J., Dimitrov, Dimitre, Hilton, Timothy W., Hollinger, David Y., Humphreys, Elyn, Poulter, Benjamin, Raczka, Brett M., Richardson, Andrew D., Sahoo, Alok, Thornton, Peter, Vargas, Rodrigo, Verbeeck, Hans, Anderson, Ryan, Baker, Ian, Black, T. Andrew, Bolstad, Paul, Chen, Jiquan, Curtis, Peter S., Desai, Ankur R., Dietze, Michael, Dragoni, Danilo, Gough, Christopher, Grant, Robert F., Gu, Lianhong, Jain, Atul, Kucharik, Chris, Law, Beverly, Liu, Shuguang, Lokipitiya, Erandathie, Margolis, Hank A., Matamala, Roser, McCaughey, J. Harry, Monson, Russ, Munger, J. William, Oechel, Walter, Peng, Changhui, Price, David T., Ricciuto, Dan, Riley, William J., Roulet, Nigel, Tian, Hanqin, Tonitto, Christina, Torn, Margaret, Weng, Ensheng, and Zhou, Xiaolu
Abstract:: Accurately simulating gross primary productivity (GPP) in terrestrial ecosystem models is critical because errors in simulated GPP propagate through the model to introduce additional errors in simulated biomass and other fluxes. We evaluated simulated, daily average GPP from 26 models against estimated GPP at 39 eddy covariance flux tower sites...
Resource Type:: Article
Full Text:: ,7 Andrew D. Richardson,13 Alok Sahoo,14 Peter Thornton,15 Rodrigo Vargas,16,17 Hans Verbeeck,18

Use of change-point detection for friction–velocity threshold evaluation in eddy-covariance studies

Creator:: Barr, A. G., Richardson, A. D., Hollinger, D. Y., Papale, D., Arain, M. A., Black, T. A., Bohrer, G., Dragoni, D., Fischer, M. L., Gu, L., Law, B. E., Margolis, H. A., McCaughey, J. H., Munger, J. W., Oechel, W., and Schaeffer, K.
Abstract:: The eddy-covariance method often underestimates fluxes under stable, low-wind conditions at night when turbulence is not well developed. The most common approach to resolve the problem of nighttime flux underestimation is to identify and remove the deficit periods using friction-velocity (u*) threshold filters (u*[superscript Th]). This study modifies an accepted...
Resource Type:: Article
Full Text:: A D W a b c d e f g h i j k l m n o p a A R R A K E F U C , 0 h Agricultural

Analysis of the regional carbon balance of Pacific Northwest forests under changing climate, disturbance, and management for bioenergy

Creator:: Hudiburg, Tara W.
Abstract:: Atmospheric carbon dioxide levels have been steadily increasing from anthropogenic energy production, development and use. Carbon cycling in the terrestrial biosphere, particularly forest ecosystems, has an important role in regulating atmospheric concentrations of carbon dioxide. US West coast forest management policies are being developed to implement forest bioenergy production while...
Resource Type:: Dissertation
Full Text:: . H. Aukema, B. J. Bentz, A. L. Carroll, J. A. Hicke, M. G. Turner, and W. H. Romme. 2008. Cross

Current systematic carbon-cycle observations and the need for implementing a policy-relevant carbon observing system

Creator:: Ciais, P., Dolman, A. J., Bombelli, A., Duren, R., Peregon, A., Rayner, P. J., Miller, C., Gobron, N., Kinderman, G., Marland, G., Gruber, N., Chevallier, F., Andres, R. J., Balsamo, G., Bopp, L., Bréon, F.-M., Broquet, G., Dargaville, R., Battin, T. J., Borges, A., Bovensmann, H., Buchwitz, M., Butler, J., Canadell, J. G., Cook, R. B., DeFries, R., Engelen, R., Gurney, K. R., Heinze, C., Heimann, M., Held, A., Henry, M., Law, B., Luyssaert, S., Miller, J., Moriyama, T., Moulin, C., Myneni, R. B., Nussli, C., Obersteiner, M., Ojima, D., Pan, Y., Paris, J.-D., Piao, S. L., Poulter, B., Plummer, S., Quegan, S., Raymond, P., Reichstein, M., Rivier, L., Sabine, C., Schimel, D., Tarasova, O., Valentini, R>, Wang, R., van der Werf, G., Wickland, D., Williams, M., and Zehner, C.
Abstract:: A globally integrated carbon observation and analysis system is needed to improve the fundamental understanding of the global carbon cycle, to improve our ability to project future changes, and to verify the effectiveness of policies aiming to reduce greenhouse gas emissions and increase carbon sequestration. Building an integrated carbon observation...
Resource Type:: Article
Full Text:: . Dargaville5, T. J. Battin12, A. Borges13, H. Bovensmann14, M. Buchwitz14, J. Butler15, J. G. Canadell16, R. B

Evaluation and improvement of the Community Land Model (CLM4) in Oregon forests

Creator:: Hudiburg, T. W., Law, B. E., and Thornton, P. E.
Abstract:: Ecosystem process models are important tools for determining the interactive effects of global change and disturbance on forest carbon dynamics. Here we evaluated and improved terrestrial carbon cycling simulated by the Community Land Model (CLM4), the land model portion of the Community Earth System Model (CESM1.0.4). Our analysis was conducted...
Resource Type:: Article

Concurrency of coherent structures and conditionally sampled daytime sub-canopy respiration

Creator:: Zeeman, Matthias J., Eugster, Werner, and Thomas, Christoph K.
Abstract:: We investigated an alternative means for quantifying daytime ecosystem respiration from eddy-covariance data in three forests with different canopy architecture. Our hypothesis was that the turbulent transport by coherent structures is the main pathway for carrying detectable sub-canopy respiration signals through the canopy. The study extends previously published work by...
Resource Type:: Article
Full Text:: , Vesala T, Verbeeck H,496 Yakir D (2008) Quality control of CarboEurope flux data .1. Coupling foot-497

The role of remote sensing in process-scaling studies of managed forest ecosystems

Creator:: Masek, Jeffrey G., Hayes, Daniel J., Hughes, M. Joseph, Healey, Sean P., and Turner, David P.
Abstract:: Sustaining forest resources requires a better understanding of forest ecosystem processes, and how management decisions and climate change may affect these processes in the future. While plot and inventory data provide our most detailed information on forest carbon, energy, and water cycling, applying this understanding to broader spatial and temporal...
Resource Type:: Article

ScholarsArchive@OSU

Seasonal variation of photosynthetic model parameters and leaf area index from global Fluxnet eddy covariance data

Evaluation of continental carbon cycle simulations with North American flux tower observations

Evaluating the agreement between measurements and models of net ecosystem exchange at different times and timescales using wavelet coherence: an example using data from the North American Carbon Program Site-Level Interim Synthesis

A model-data comparison of gross primary productivity: Results from the North American Carbon Program site synthesis

Use of change-point detection for friction–velocity threshold evaluation in eddy-covariance studies

Analysis of the regional carbon balance of Pacific Northwest forests under changing climate, disturbance, and management for bioenergy

Current systematic carbon-cycle observations and the need for implementing a policy-relevant carbon observing system

Evaluation and improvement of the Community Land Model (CLM4) in Oregon forests

Concurrency of coherent structures and conditionally sampled daytime sub-canopy respiration

The role of remote sensing in process-scaling studies of managed forest ecosystems

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