Index Catalog // ScholarsArchive@OSU

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
Full Text:: . W. Hudiburg (hudiburg@illinois.edu), B. E. Law (bev.law@oregonstate.edu) and P. E. Thornton

Empirical assessment of uncertainties of meteorological parameters and turbulent fluxes in the AmeriFlux network

Creator:: Schmidt, Andres, Hanson, Chad, Chan, W. Stephen, and Law, Beverly E.
Abstract:: Terrestrial ecosystem-atmosphere exchange of carbon, water vapor, and energy has been measured for over a decade at many sites globally. To minimize measurement and analysis errors, quality assurance data have been collected over short periods along-side tower instruments at AmeriFlux research sites. Theoretical and empirical error and uncertainty values have...
Resource Type:: Article
Full Text:: . Chan, and B. E. Law (2012), Empirical assessment of uncertainties of meteorological parameters and

Sensitivity of a subregional scale atmospheric inverse CO₂ modeling framework to boundary conditions

Creator:: Göckede, Mathias, Turner, David P., Michalak, Anna M., Vickers, Dean, and Law, Beverly E.
Abstract:: We present an atmospheric inverse modeling framework to constrain terrestrial biosphere CO₂ exchange processes at subregional scales. The model is operated at very high spatial and temporal resolution, using the state of Oregon in the northwestern United States as the model domain. The modeling framework includes mesoscale atmospheric simulations coupled...
Resource Type:: Article
Full Text:: , and B. E. Law (2010), Sensitivity of a subregional scale atmospheric inverse CO2 modeling framework to

Decadal Trends in Net Ecosystem Production and Net Ecosystem Carbon Balance for a Regional Socioecological System

Creator:: Turner, David P., Ritts, William D., Yang, Zhiqiang, Kennedy, Robert E., Cohen, Warren B., Duane, Maureen V., Thornton, Peter E., and Law, Beverly E.
Abstract:: Carbon sequestration is increasingly recognized as an ecosystem service, and forest management has a large potential to alter regional carbon fluxes − notably by way of harvest removals and related impacts on net ecosystem production (NEP). In the Pacific Northwest region of the U.S., the implementation of the Northwest Forest...
Resource Type:: Article
Full Text:: , Peter E. Environmental Sciences Division, Oak Ridge National Laboratory Law, Beverly E. Department

Integration of MODIS land and atmosphere products with a coupled-process model to estimate gross primary productivity and evapotranspiration from 1 km to global scales

Creator:: Ryu, Youngryel, Baldocchi, Dennis D., Kobayashi, Hideki, van Ingen, Catharine, Li, Jie, Black, T. Andy, Beringer, Jason, van Gorsel, Eva, Knohl, Alexander, Law, Beverly E., and Roupsard, Olivier
Abstract:: We propose the Breathing Earth System Simulator (BESS), an upscaling approach to quantify global gross primary productivity and evapotranspiration using MODIS with a spatial resolution of 1-5 km and a temporal resolution of 8 days. This effort is novel because it is the first system that harmonizes and utilizes MODIS...
Resource Type:: Article
Full Text:: T. Andy Black,5 Jason Beringer,6 Eva van Gorsel,7 Alexander Knohl,8 Beverly E. Law,9 and Olivier

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:: of change-point detection for friction–velocity threshold evaluation in eddy-covariance studies U e

On the temporal upscaling of evapotranspiration from instantaneous remote sensing measurements to 8-day mean daily-sums

Creator:: Ryu, Youngryel, Baldocchi, Dennis D., Black, T. Andrew, Detto, Matteo, Law, Beverly E., Leuning, Ray, Miyata, Akira, Reichstein, Markus, Vargas, Rodrigo, Ammann, Christof, Beringer, Jason, Flanagan, Lawrence B., Gu, Lianhong, Hutley, Lindsay B., Kim, Joon, McCaughey, Harry, Moors, Eddy J., Rambal, Serge, and Vesala, Timo
Abstract:: The regular monitoring of evapotranspiration from satellites has been limited because of discontinuous temporal coverage, resulting in snapshots at a particular point in space and time. We developed a temporal upscaling scheme using satellite-derived instantaneous estimates of evapotranspiration to produce a daily-sum evapotranspiration averaged over an 8-day interval. We tested...
Resource Type:: Article
Full Text:: mean daily-sums O s Y R L , a b c d e f g h i j k l m n o p q r s a A R R A K

Thermal optimality of net ecosystem exchange of carbon dioxide and underlying mechanisms

Creator:: Niu, Shuli, Luo, Yiqi, Fei, Shenfeng, Yuan, Wenping, Schimel, David, Law, Beverly E., Ammann, Christof, Arain, M. Altaf, Arneth, Almut, Aubinet, Marc, Barr, Alan, Beringer, Jason, Bernhofer, Christian, Black, T. Andrew, Buchmann, Nina, Cescatti, Alessandro, Chen, Jiquan, Davis, Kenneth J., Dellwik, Ebba, Desai, Ankur R., Etzold, Sophia, Francois, Louis, Gianelle, Damiano, Gielen, Bert, Goldstein, Allen, Groenendijk, Margriet, Gu, Lianhong, Hanan, Niall, Helfter, Carole, Hirano, Takashi, Hollinger, David Y., Jones, Mike B., Kiely, Gerard, Kolb, Thomas E., Kutsch, Werner L., Lafleur, Peter, Lawrence, David M., Li, Linghao, Lindroth, Anders, Litvak, Marcy, Loustau, Denis, Lund, Magnus, Marek, Michal, Martin, Timothy A., Matteucci, Giorgio, Migliavacca, Mirco, Montagnani, Leonardo, Moors, Eddy, Munger, J. William, Noormets, Asko, Oechel, Walter, Olejnik, Janusz, Paw U, Kyaw Tha, Pilegaard, Kim, Rambal, Serge, Raschi, Antonio, Scott, Russell L., Seufert, Gunther, Spano, Donatella, Stoy, Paul, Sutton, Mark A., Varlagin, Andrej, Vesala, Timo, Weng, Ensheng, Wohlfahrt, Georg, Yang, Bai, Zhang, Zhongda, and Zhou, Xuhui
Abstract:: It is well established that individual organisms can acclimate and adapt to temperature to optimize their functioning. However, thermal optimization of ecosystems, as an assemblage of organisms, has not been examined at broad spatial and temporal scales. Here, we compiled data from 169 globally distributed sites of eddy covariance and...
Resource Type:: Article
Full Text:: Schimel4, Beverly E. Law5, Christof Ammann6, M. Altaf Arain7, Almut Arneth8,9, Marc Aubinet10, Alan Barr11

ScholarsArchive@OSU

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

Empirical assessment of uncertainties of meteorological parameters and turbulent fluxes in the AmeriFlux network

Sensitivity of a subregional scale atmospheric inverse CO₂ modeling framework to boundary conditions

Decadal Trends in Net Ecosystem Production and Net Ecosystem Carbon Balance for a Regional Socioecological System

Integration of MODIS land and atmosphere products with a coupled-process model to estimate gross primary productivity and evapotranspiration from 1 km to global scales

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

On the temporal upscaling of evapotranspiration from instantaneous remote sensing measurements to 8-day mean daily-sums

Thermal optimality of net ecosystem exchange of carbon dioxide and underlying mechanisms

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