A
Alan Barr
Researcher at Environment Canada
Publications - 10
Citations - 3087
Alan Barr is an academic researcher from Environment Canada. The author has contributed to research in topics: Carbon cycle & Carbon dioxide in Earth's atmosphere. The author has an hindex of 8, co-authored 10 publications receiving 2634 citations. Previous affiliations of Alan Barr include Meteorological Service of Canada.
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Journal ArticleDOI
Net carbon dioxide losses of northern ecosystems in response to autumn warming
Shilong Piao,Philippe Ciais,Pierre Friedlingstein,Philippe Peylin,Markus Reichstein,Sebastiaan Luyssaert,Hank A. Margolis,Jingyun Fang,Alan Barr,Anping Chen,Achim Grelle,David Y. Hollinger,Tuomas Laurila,Anders Lindroth,Andrew D. Richardson,Timo Vesala +15 more
TL;DR: Simulation and observations indicate that northern terrestrial ecosystems may currently lose carbon dioxide in response to autumn warming, with a sensitivity of about 0.2 PgC °C-1, offsetting 90% of the increased carbon dioxide uptake during spring.
Journal ArticleDOI
Comprehensive comparison of gap-filling techniques for eddy covariance net carbon fluxes
Antje Moffat,Dario Papale,Markus Reichstein,David Y. Hollinger,Andrew D. Richardson,Alan Barr,Clemens Beckstein,Bobby H. Braswell,Galina Churkina,Ankur R. Desai,Eva Falge,Jeffrey H. Gove,Martin Heimann,Dafeng Hui,Andy Jarvis,Jens Kattge,Asko Noormets,Vanessa J. Stauch +17 more
TL;DR: In this paper, 15 techniques for estimating missing values of net ecosystem CO 2 exchange (NEE) in eddy covariance time series and evaluate their performance for different artificial gap scenarios based on a set of 10 benchmark datasets from six forested sites in Europe.
Journal ArticleDOI
Separation of net ecosystem exchange into assimilation and respiration using a light response curve approach: critical issues and global evaluation
Gitta Lasslop,Markus Reichstein,Dario Papale,Andrew D. Richardson,Almut Arneth,Alan Barr,Paul C. Stoy,Georg Wohlfahrt +7 more
TL;DR: In this paper, the authors introduce an algorithm for NEE partitioning that uses a hyperbolic light response curve fit to daytime NEE, modified to account for the temperature sensitivity of respiration and the VPD limitation of photosynthesis.
Journal ArticleDOI
Climate control of terrestrial carbon exchange across biomes and continents
Chuixiang Yi,Daniel M. Ricciuto,Runze Li,John Wolbeck,Xiyan Xu,Mats Nilsson,Luis Aires,John D. Albertson,Christof Ammann,M. Altaf Arain,Alessandro Araújo,Marc Aubinet,Mika Aurela,Zoltán Barcza,Alan Barr,Paul Berbigier,Jason Beringer,Christian Bernhofer,Andrew Black,Paul V. Bolstad,Fred C. Bosveld,M. S. J. Broadmeadow,Nina Buchmann,Sean P. Burns,Pierre Cellier,Jingming Chen,Jiquan Chen,Philippe Ciais,Robert Clement,Bruce D. Cook,Peter S. Curtis,D. Bryan Dail,Ebba Dellwik,Nicolas Delpierre,Ankur R. Desai,Sabina Dore,Danilo Dragoni,Bert G. Drake,Eric Dufrêne,Allison L. Dunn,Jan Elbers,Werner Eugster,Matthias Falk,Christian Feigenwinter,Lawrence B. Flanagan,Thomas Foken,John M. Frank,J. Fuhrer,Damiano Gianelle,Allen H. Goldstein,Michael L. Goulden,André Granier,Thomas Gruenwald,Lianhong Gu,Haiqiang Guo,Albin Hammerle,Shijie Han,Niall P. Hanan,László Haszpra,Bernard Heinesch,Carole Helfter,Dimmie Hendriks,Lindsay B. Hutley,Andreas Ibrom,Corinne Jacobs,Torbjoern Johansson,Marjan Jongen,Gabriel G. Katul,Gerard Kiely,Katja Klumpp,Alexander Knohl,Thomas Kolb,Werner L. Kutsch,Peter M. Lafleur,Tuomas Laurila,Ray Leuning,Anders Lindroth,Heping Liu,Benjamin Loubet,Giovanni Manca,Michal V. Marek,Hank A. Margolis,Timothy A. Martin,William J. Massman,Roser Matamala,Giorgio Matteucci,Harry McCaughey,Lutz Merbold,Tilden P. Meyers,Mirco Migliavacca,Franco Miglietta,Laurent Misson,Meelis Moelder,John Moncrieff,Russell K. Monson,Leonardo Montagnani,M. Montes-Helu,Eddy Moors,Christine Moureaux,Mukufute M. Mukelabai,J. William Munger,M. Myklebust,Zoltán Nagy,Asko Noormets,Walter C. Oechel,Ram Oren,Stephen G. Pallardy,Tha Paw U Kyaw,João Pereira,Kim Pilegaard,Krisztina Pintér,Casimiro Pio,Gabriel Pita,Thomas L. Powell,Serge Rambal,James T. Randerson,Celso von Randow,Corinna Rebmann,Janne Rinne,Federica Rossi,Nigel T. Roulet,Ronald J. Ryel,Jörgen Sagerfors,Nobuko Saigusa,María José Sanz,Giuseppe-Scarascia Mugnozza,Hans Peter Schmid,Guenther Seufert,Mario B. S. Siqueira,Jean-François Soussana,Gregory Starr,Mark A. Sutton,John Tenhunen,Zoltán Tuba,Juha-Pekka Tuovinen,Riccardo Valentini,Christoph S. Vogel,Jingxin Wang,Shaoqiang Wang,Weiguo Wang,Lisa R. Welp,Xuefa Wen,Sonia Wharton,Matthew Wilkinson,Christopher B. Williams,Georg Wohlfahrt,Susumu Yamamoto,Guirui Yu,Roberto Zampedri,Bin Zhao,Xinquan Zhao +150 more
TL;DR: In this article, the authors measured the relationship between net ecosystem exchange of carbon and climate factors using the eddy covariance method at 125 unique sites in various ecosystems over six continents with a total of 559 site-years.
Journal ArticleDOI
Thermal optimality of net ecosystem exchange of carbon dioxide and underlying mechanisms.
Shuli Niu,Yiqi Luo,Yiqi Luo,Shenfeng Fei,Wenping Yuan,David S. Schimel,Beverly E. Law,Christof Ammann,M. Altaf Arain,Almut Arneth,Almut Arneth,Marc Aubinet,Alan Barr,Jason Beringer,Christian Bernhofer,T. Andrew Black,Nina Buchmann,Alessandro Cescatti,Jiquan Chen,Kenneth J. Davis,Ebba Dellwik,Ankur R. Desai,Sophia Etzold,Louis François,Damiano Gianelle,Bert Gielen,Allen H. Goldstein,M. Groenendijk,Lianhong Gu,Niall P. Hanan,Carole Helfter,Takashi Hirano,David Y. Hollinger,Michael P. Jones,Gerard Kiely,Thomas Kolb,Werner L. Kutsch,Peter M. Lafleur,David M. Lawrence,Linghao Li,Anders Lindroth,Marcy E. Litvak,Denis Loustau,Magnus Lund,Michal V. Marek,Timothy A. Martin,Giorgio Matteucci,Mirco Migliavacca,Leonardo Montagnani,Eddy Moors,J. William Munger,Asko Noormets,Walter C. Oechel,Janusz Olejnik,Kyaw Tha Paw U,Kim Pilegaard,Serge Rambal,Antonio Raschi,Russell L. Scott,Guenther Seufert,Donatella Spano,Paul C. Stoy,Mark A. Sutton,Andrej Varlagin,Timo Vesala,Ensheng Weng,Georg Wohlfahrt,Bai Yang,Zhongda Zhang,Xuhui Zhou +69 more
TL;DR: The temperature response functions of net ecosystem exchange (NEE), an ecosystem-level property, were compiled and it was found that the temperature response of NEE followed a peak curve, with the optimum temperature being positively correlated with annual mean temperature over years and across sites.