Zobrazeno 1 - 10
of 33
pro vyhledávání: '"J. H. McCaughey"'
Autor:
L. Montagnani, J. H. McCaughey, J. Campos, G. Wohlfahrt, N. Arriga, B. E. Law, M. Detto, M. Reichstein, M. D. Mahecha, J. Stanovick, G. G. Katul, D. D. Baldocchi, A. D. Richardson, P. C. Stoy, K. T. Paw U, S. Sevanto, M. Williams
Publikováno v:
Biogeosciences, Vol 6, Iss 10, Pp 2297-2312 (2009)
The net ecosystem exchange of CO2 (NEE) varies at time scales from seconds to years and longer via the response of its components, gross ecosystem productivity (GEP) and ecosystem respiration (RE), to physical and biological drivers. Quantifying the
Externí odkaz:
https://doaj.org/article/d0d06b80b8a34eee96e6273197d62e56
Autor:
Leonardo Montagnani, Marian Pavelka, Mart-Jan Schelhaas, Andrej Varlagin, A A Rodrigues, Riccardo Valentini, J. H. McCaughey, Fredrik Lagergren, Alexander Knohl, Michal V. Marek, Cécile Vincke, Bernard Heinesch, Christian Bernhofer, M. J. Sanz Sánchez, Werner Eugster, Mathias Herbst, Janusz Olejnik, Marek Urbaniak, Jian Wu, Andreas Ibrom, Stefano Minerbi, Kateřina Havránková, Timo Vesala, Arnaud Carrara, Giorgio Matteucci, Gabriel Pita, S. Zielis, Matthias Haeni, Kim Pilegaard, Eddy Moors, Arthur Gessler, Roman Zweifel, Thomas Grünwald, Nina Buchmann, Beverly E. Law
Publikováno v:
Journal of Geophysical Research: Biogeosciences. 122:243-260
Accurate predictions of net ecosystem productivity (NEPc) of forest ecosystems are essential for climate change decisions and requirements in the context of national forest growth and greenhouse gas inventories. However, drivers and underlying mechan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d911352f0afc6c0d98b9899dbd4c6e75
https://doi.org/10.1002/2016jg003455
https://doi.org/10.1002/2016jg003455
Autor:
Elizabeth M. Middleton, Alan G. Barr, T. A. Black, David R. Landis, J. H. McCaughey, Karl F. Huemmrich
Publikováno v:
Remote Sensing of Environment. 187:345-366
This study evaluates a direct remote sensing approach from space for the determination of ecosystem photosynthetic light use efficiency (LUE), through measurement of vegetation reflectance changes expressed with the Photochemical Reflectance Index (P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e3086ab27968a9f63db86c5c4348ed5
https://doi.org/10.1016/j.rse.2016.10.021
https://doi.org/10.1016/j.rse.2016.10.021
Autor:
J. H. McCaughey, Hank A. Margolis, Pierre Y. Bernier, Z.S. Xing, Brian D. Amiro, M. A. Arain, K. C. J. Van Rees, John A. Trofymow, Alan G. Barr, Jagtar S. Bhatti, T. A. Black, Tianshan Zha, Carole Coursolle, Michael B. Lavigne
Publikováno v:
Agricultural and Forest Meteorology. :54-64
Simultaneous biometric measurements of aboveground net primary production (ANPP) and eddy-covariance measurements of gross primary production (GPP) were made at 18 forest stands with 80 site-years of data across Canada – to assess the fraction of p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fe2647be2c1dc5b0484e8b6635e82db
https://doi.org/10.1016/j.agrformet.2013.02.004
https://doi.org/10.1016/j.agrformet.2013.02.004
Autor:
Dario Papale, J. W. Munger, T. A. Black, Hank A. Margolis, J. H. McCaughey, Marc Fischer, Beverly E. Law, Arain, Danilo Dragoni, David Y. Hollinger, Alan G. Barr, Gil Bohrer, K. Schaeffer, Lianhong Gu, Walter C. Oechel, Andrew D. Richardson
Publikováno v:
Agricultural and Forest Meteorology
a b s t r a c t 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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7bb99093054a2f98fc61e4dc8e216f9
Autor:
Jing M. Chen, T. A. Black, Marc-André Giasson, Peter M. Lafleur, Michael L. Goulden, J. H. McCaughey, Allison L. Dunn, Brian D. Amiro, Alan G. Barr, Hank A. Margolis, Robert F. Grant, Pierre Y. Bernier, M. A. Arain, Carole Coursolle
Publikováno v:
Agricultural and Forest Meteorology. 165:136-148
Proper management and accounting of forest carbon requires good knowledge of how disturbances and climate affect the carbon dynamics of different stand types. We have investigated such relationships by measuring, over a 5-year period (2003–2007), t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffbc47cad43c574a61400943d052484e
https://doi.org/10.1016/j.agrformet.2012.06.011
https://doi.org/10.1016/j.agrformet.2012.06.011
Publikováno v:
Agricultural and Forest Meteorology. 153:3-13
The eddy-covariance method has become a cornerstone in the study of the surface energy and water balances, yet the oft-reported lack of energy-balance closure adds uncertainty to its measurements of evapotranspiration. This study explores the issue o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a80869dda8e02222bd3564ba5922deb1
https://doi.org/10.1016/j.agrformet.2011.05.017
https://doi.org/10.1016/j.agrformet.2011.05.017
Autor:
Sanna Sevanto, Beverly E. Law, J. Campos, Georg Wohlfahrt, Miguel D. Mahecha, Paul C. Stoy, Markus Reichstein, Leonardo Montagnani, Nicola Arriga, Dennis D. Baldocchi, Matteo Detto, J. Stanovick, Andrew D. Richardson, Mathew Williams, Gabriel G. Katul, J. H. McCaughey
Publikováno v:
Biogeosciences. 6:2297-2312
The net ecosystem exchange of CO2 (NEE) varies at time scales from seconds to years and longer via the response of its components, gross ecosystem productivity (GEP) and ecosystem respiration (RE), to physical and biological drivers. Quantifying the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::801d94e63c739cd9fe18df6d87449e4c
https://doi.org/10.5194/bg-6-2297-2009
https://doi.org/10.5194/bg-6-2297-2009
Publikováno v:
Agricultural and Forest Meteorology. 140:79-96
A long-term flux measurement station has been established in a 74-year-old mixedwood forest ecosystem, located approximately 80 km west of Timmins in northern Ontario, as part of the Fluxnet-Canada Research Network (FCRN). Measurements of energy, wat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77a92409a1cf4c99176c63cd47283c2b
https://doi.org/10.1016/j.agrformet.2006.08.010
https://doi.org/10.1016/j.agrformet.2006.08.010
Nocturnal CO2 exchange over a tall forest canopy associated with intermittent low-level jet activity
Autor:
J. H. McCaughey, Gengsheng Zhang, David Y. Hollinger, G. R. Hendrey, Gregory Starr, Anandakumar Karipot, Monique Y. Leclerc, Timothy A. Martin
Publikováno v:
Theoretical and Applied Climatology. 85:243-248
Nocturnal eddy-covariance carbon dioxide fluxes have uncertainties arising from non-stationary atmospheric processes. Low-level jets (LLJ) are one of the prominent nocturnal boundary-layer phenomena observed over non-mountainous terrain, and are capa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a9b77cf95333194e4b6aefd4fe45a05
https://doi.org/10.1007/s00704-005-0183-7
https://doi.org/10.1007/s00704-005-0183-7