Measurement of Atmospheric Concentration of CO2 in the Hudson Bay Lowlands: An Application of a Lagrangian Particle Dispersion Model (STILT)

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dc.contributor.advisorBello, Richard
dc.creatorBalogun, Olalekan Oluleye
dc.date.accessioned2016-09-20T16:44:09Z
dc.date.available2016-09-20T16:44:09Z
dc.date.copyright2015-12-23
dc.date.issued2016-09-20
dc.date.updated2016-09-20T16:44:09Z
dc.degree.disciplineGeography
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractAtmospheric CO2 concentrations are influenced by surface fluxes, as well as advection and vertical mixing on the way to the measurement tower. The capability of transport models to accurately represent air parcel trajectories and footprints is crucial in inverse analysis. This study employs the Stochastic Time-inverted Lagrangian Transport model (STILT), driven by meteorological inputs from the North American Regional Reanalysis (NARR), to simulate atmospheric CO2 in the Hudson Bay Lowlands. The primary objectives include: (1) Characterize daily, seasonal and interannual variations of atmospheric CO2 for a 5-year (2008-2012) period; (2) Evaluate the performance of the STILT model, and CarbonTracker flux estimates. STILT-modelled CO2 concentrations compare reasonably against observations. The mean model bias was -0.57 ppm at Churchill, and -2.44 ppm at Fraserdale. Smoothed seasonal curves fitted to the daily afternoon data revealed that model bias was highest during summertime, particularly over the Fraserdale region. This disparity between modelled and observed results are attributed to transport errors related to advection and PBL mixing.
dc.identifier.urihttp://hdl.handle.net/10315/32208
dc.language.isoen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectClimate change
dc.subject.keywordsAtmospheric CO2 concentration
dc.subject.keywordsBiosphere-atmosphere interactions
dc.subject.keywordsMeteorology and Atmospheric Dynamics
dc.subject.keywordsBoundary layer processes
dc.subject.keywordsCarbon fluxes
dc.subject.keywordsCO2 sources and sinks
dc.subject.keywordsTrajectory modeling
dc.subject.keywordsStochastic Time-Inverted Lagrangian Transport Model
dc.subject.keywordsSTILT
dc.subject.keywordsLagrangian Particle Dispersion Models
dc.subject.keywordsLPDM
dc.subject.keywordsCarbon Tracker
dc.subject.keywordsHudson Bay Lowlands
dc.subject.keywordsCanada's Boreal Forest
dc.subject.keywordsChurchill Manitoba
dc.subject.keywordsFraserdale Ontario
dc.subject.keywordsGlobal Change Science
dc.titleMeasurement of Atmospheric Concentration of CO2 in the Hudson Bay Lowlands: An Application of a Lagrangian Particle Dispersion Model (STILT)
dc.typeElectronic Thesis or Dissertation

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