Flanagan, Larry

 

Recent Submissions

  • Coupled eco-hydrology and biogeochemistry algorithms enable the simulation of water table depth effects on boreal peatland net CO2 exchange 
    Mezbahuddin, Mohammad; Grant, Robert F.; Flanagan, Larry B. (European Geosciences UnionArts and ScienceDepartment of Biological SciencesAlberta Agriculture and ForestryUniversity of AlbertaUniversity of Lethbridgehttps://dx.doi.org/10.5194/bg-14-5507-2017, 2017)
    Water table depth (WTD) effects on net ecosystem CO2 exchange of boreal peatlands are largely mediated by hydrological effects on peat biogeochemistry and the ecophysiology of peatland vegetation. The lack of representation ...
  • A model-data intercomparison of CO2 exchange across North America: results from the North American Carbon Program site synthesis 
    Schwalm, Christopher R.; Williams, Christopher A.; Schaefer, Kevin; Anderson, Ryan S.; Arain, M. Altaf; Baker, Ian T.; Barr, Alan G.; Black, T. Andrew; Chen, Guangsheng; Chen, Jing M.; Ciais, Philippe; Davis, Kenneth J.; Desai, Ankur R.; Dietze, Michael C.; Dragoni, Danilo; Fischer, Marc L.; Flanagan, Larry B.; Grant, Robert F.; Gu, Lianhong; Hollinger, David Y.; Izaurralde, R. Cesar; Kucharik, Christopher J.; Lafleur, Peter M.; Law, Beverly E.; Li, Longhui; Li, Zhengpeng; Liu, Shuguang; Lokupitiya, Erandathie; Luo, Yiqi; Ma, Siyan; Margolis, Hank; Matamala, Roser; McCaughey, Harry; Monson, Russell K.; Oechel, Walter C.; Peng, Changhui; Poulter, Benjamin; Price, David T.; Ricciuto, Daniel M.; Riley, William J.; Sahoo, Alok Kumar; Sprintsin, Michael; Sun, Jianfeng; Tian, Hanqin; Tonitto, Christina; Verbeeck, Hans; Verma, Shashi B. (American Geophysical UnionArts and ScienceDepartment of Biological SciencesClark UniversityUniversity of Colorado at BoulderUniversity of MontanaMcMaster UniversityColorado State UniversityAtmospheric Science and Technology DirectorateUniversity of British ColumbiaAuburn UniversityUniversity of TorontoLaboratoire des Sciences du Climat et de l'EnvironmentPennsylvania State UniversityUniversity of Wisconsin-MadisonUniversity of Illinoise at Urbana-ChampaignIndiana UniversityLawrence Berkeley National LaboratoryUniversity of LethbridgeUniversity of AlbertaOak Ridge National LaboratoryUSDA Forest ServicePacific Northwest National LaboratoryUniversity of MarylandTrent UniversityOregon State UniversityASRC Research and Technology SolutionsEarth Resources Observation and Science CenterUniversity of OklahomaUniversity of CaliforniaUniversite LavalArgonne National LaboratoryQueen's UniversitySan Diego State UniversityUniversity of Quebec at MontrealSwiss Federal Research InstituteCanadian Forest ServicePrinceton UniversityCornell UniversityGhent UniversityUniversity of Nebraska-Lincolnhttps://dx.doi.org/10.1029/2009JG001229, 2010)
    Our current understanding of terrestrial carbon processes is represented in various models used to integrate and scale measurements of CO2 exchange from remote sensing and other spatiotemporal data. Yet assessments are ...
  • Characterizing the performance of ecosystem models across time scales: a spectral analysis of the North American Carbon Program site-level synthesis 
    Dietze, Michael C.; Vargas, Rodrigo; Richardson, Andrew D.; Stoy, Paul C.; Barr, Alan G.; Anderson, Ryan S.; Arain, M. Altaf; Baker, Ian T.; Black, T. Andrew; Chen, Jing M.; Philippe, Ciais; Flanagan, Larry B.; Gough, Christopher M.; Grant, Robert F.; Hollinger, David Y.; Izaurralde, R. Cesar; Kucharik, Christopher J.; Lafleur, Peter M.; Liu, Shugang; Lokupitiya, Erandathie; Luo, Yiqi; Munger, J. William; Peng, Changhui; Poulter, Benjamin; Price, David T.; Ricciuto, Daniel M.; Riley, William J.; Sahoo, Alok Kumar; Schaefer, Kevin; Suyker, Andrew E.; Tian, Hanqin; Tonitto, Christina; Verbeeck, Hans; Verma, Shashi B.; Wang, Weifeng; Weng, Ensheng (American Geophysical UnionArts and ScienceDepartment of Biological SciencesUniversity of Illinoise at Urbana-ChampaignCentro de Investigacion Cientifica y de Educacion Superior de EnsenadaHarvard UniversityMontana State UniversityAtmospheric Science and Technology DirectorateUniversity of MontanaMcMaster UniversityColorado State UniversityUniversity of British ColumbiaUniversity of TorontoCentre d'Etudes Orme des MerisiersUniversity of LethbridgeVirginia Commonwealth UniversityUniversity of AlbertaU.S. Department of Agriculture Forest ServicePacific Northwest National LaboratoryUniversity of MarylandUniversity of Wisconsin-MadisonTrent UniversityEarth Resources Observation and Science CenterUniversity of OklahomaUniversity of Quebec at MontrealSwiss Federal Research InstituteLaboratoire des Sciences du Climat et de l'EnvironmentCanadian Forest ServiceOak Ridge National LaboratoryLawrence Berkeley National LaboratoryPrinceton UniversityUniversity of Colorado at BoulderUniversity of Nebraska-LincolnAuburn UniversityCornell UniversityGhent Universityhttps://dx.doi.org/10.1029/2011JG001661, 2011)
    Ecosystem models are important tools for diagnosing the carbon cycle and projecting its behavior across space and time. Despite the fact that ecosystems respond to drivers at multiple time scales, most assessments of model ...
  • On the use of MODIS EVI to assess gross primary productivity of North American ecosystems 
    Sims, Daniel A.; Rahman, Abdullah F.; Cordova, Vicente D.; El-Masri, Bassil Z.; Baldocchi, Dennis D.; Flanagan, Larry B.; Goldstein, Allen H.; Hollinger, David Y.; Misson, Laurent; Monson, Russell K.; Oechel, Walter C.; Schmid, Hans P.; Wofsy, Steven C.; Xu, Liukang (American Geophysical UnionArts and ScienceDepartment of Biological SciencesBall State UniversityTexas Tech UniversityUniversity of CaliforniaUniversity of LethbridgeNortheastern Research StationUniversity of Colorado at BoulderSan Diego State UniversityIndiana UniversityHavard UniversityLicor Incorporated Environmentalhttps://dx.doi.org/10.1029/2006JG000162, 2006)
    Carbon flux models based on light use efficiency (LUE), such as the MOD17 algorithm, have proved difficult to parameterize because of uncertainties in the LUE term, which is usually estimated from meteorological variables ...
  • Impact of hydrological variations on modeling of peatland CO2 fluxes: results from the North American Carbon Program site synthesis 
    Sulman, Benjamin N.; Desai, Ankur R.; Schroeder, Nicole M.; Ricciuto, Daniel M.; Barr, Alan G.; Richardson, Andrew D.; Flanagan, Larry B.; Lafleur, Peter M.; Tian, Hanqin; Chen, Guangsheng; Grant, Robert F.; Poulter, Benjamin; Verbeeck, Hans; Ciais, Philippe; Ringeval, Bruno; Baker, Ian T.; Schaefer, Kevin; Luo, Yiqi; Wong, Ensheng (American Geophysical UnionArts and ScienceDepartment of Biological SciencesUniversity of Wisconsin-MadisonOak Ridge National LaboratoryEnvironment CanadaHarvard UniversityUniversity of LethbridgeTrent UniversityAuburn UniversityUniversity of AlbertaSwiss Federal Research InstituteLaboratoire des Sciences du Climat et de l'EnvironmentGhent UniversityColorado State UniversityUniversity of Colorado at BoulderUniversity of Oklahomahttps://dx.doi.org/10.1029/2011JG001862, 2012)
    Northern peatlands are likely to be important in future carbon cycle-climate feedbacks due to their large carbon pools and vulnerability to hydrological change. Use of non-peatland-specific models could lead to bias in ...
  • Summer carbon dioxide and water vapor fluxes across a range of northern peatlands 
    Humphreys, Elyn R.; Lafleur, Peter M.; Flanagan, Larry B.; Hedstrom, Newell; Syed, Kamran H.; Glenn, Aaron J.; Granger, Raoul (American Geophysical UnionArts and ScienceDepartment of Biological SciencesTrent UniversityUniversity of LethbridgeNational Hydrology Research Centrehttps://dx.doi.org/10.1029/2005JG000111, 2006)
    Northern peatlands are a diverse group of ecosystems varying along a continuum of hydrological, chemical, and vegetation gradients. These ecosystems contain about one third of the global soil carbon pool, but it is uncertain ...
  • Modeling stomatal and nonstomatal effects of water deficits on CO2 fixation in a semiarid grassland 
    Grant, Robert F.; Flanagan, Larry B. (American Geophysical UnionArts and ScienceDepartment of Biological SciencesUniversity of AlbertaUniversity of Lethbridgehttps://dx.doi.org/10.1029/2006JG000302, 2007)
    The confidence with which we can model water deficit effects on grassland productivity is limited by uncertainty about the mechanisms, stomatal and nonstomatal, by which soil water deficits reduce CO2 uptake. We propose ...
  • Contrasting responses of growing season ecosystem CO2 exchange to variation in temperature and water table depth in two peatlands in northern Alberta, Canada 
    Adkinson, Angela C.; Syed, Kamran H.; Flanagan, Larry B. (American Geophysical UnionArts and ScienceDepartment of Biological SciencesUniversity of Lethbridgehttps://dx.doi.org/10.1029/2010JG001512, 2011)
    The large belowground carbon stocks in northern peatland ecosystems are potentially susceptible to release because of the expected differential responses of photosynthesis and respiration to climate change. This study ...
  • Phenology and its role in carbon dioxide exchange processes in northern peatlands 
    Kross, Angela S.E.; Roulet, Nigel T.; Moore, Tim R.; Lafleur, Peter M.; Humphreys, Elyn R.; Seaquist, Jonathan W.; Flanagan, Larry B.; Aurela, Mike (American Geophysical UnionArts and ScienceDepartment of Biological SciencesAgriculture and Agri-Food CanadaMcGill UniversityTrent UniversityCarleton UniversityLund UniversityUniversity of LethbridgeFinnish Meteorological Institute, 2014)
    Ecosystem phenology plays an important role in carbon exchange processes and can be derived from continuous records of carbon dioxide (CO2) exchange data. In this study we examined the potential use of phenological indices ...
  • The sensitivity of carbon exchanges in Great Plains grasslands to precipitation variability 
    Petrie, M. D.; Brunsell, N. A.; Vargas, R.; Collins, S. L.; Flanagan, Larry B.; Hanan, N. P.; Litvak, M. E.; Suker, A. E. (American Geophysical UnionArts and ScienceDepartment of Biological SciencesUniversity of WyomingUSGS Colorado Plateau Research StationUniversity of KansasUniversity of DelawareUniversity of New MexicoUniversity of LethbridgeSouth Dakota State UniversityUniversity of Nebraska, 2016)
    In the Great Plains, grassland carbon dynamics differ across broad gradients of precipitation and temperature, yet finer-scale variation in these variables may also affect grassland processes. Despite the importance of ...
  • Modeling hydrological controls on variations in peat water content, water table depth, and surface energy exchange of a boreal western Canadian fen peatland 
    Mezbahuddin, M.; Grant, Robert F.; Flanagan, Larry B. (American Geophysical UnionArts and ScienceDepartment of Biological SciencesAlberta Agriculture and ForestryUniversity of AlbertaUniversity of Lethbridge, 2016)
    Improved predictive capacity of hydrology and surface energy exchange is critical for conserving boreal peatland carbon sequestration under drier and warmer climates. We represented basic processes for water and O2 transport ...