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Investigation of enhancements to two fundamental components of the statistical interpolation method used by the Canadian Precipitation Analysis (CaPA)

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dc.contributor.supervisor Rasmussen, Peter (Civil Engineering) en_US
dc.contributor.author Evans, Andrea Marie
dc.date.accessioned 2013-11-26T13:20:19Z
dc.date.available 2013-11-26T13:20:19Z
dc.date.issued 2013-11-26
dc.identifier.uri http://hdl.handle.net/1993/22276
dc.description.abstract The Canadian Precipitation Analysis (CaPA) generates gridded precipitation data outputs based on the assimilation of both observation and climate model data. CaPA outputs are highly valuable to modelling efforts dependent on precipitation inputs, and as such the quality of CaPA outputs is crucial. Two improvements to CaPA were investigated: reducing transformation bias though correction against moving-window averaged CaPA output that avoids transformation, and enhancing semivariograms through anisotropy and convection considerations. Accounting for convection in the semivariogram proved ineffectual, while the bias correction technique and anisotropic semivariograms both reduced bias and improved related metrics. No methods improved the Equitable Threat Score. If implemented separately, the bias correction or anisotropic semivariogram approaches will yield targeted benefits for CaPA users, particularly for applications focused on extreme precipitation values. Improvements were not so comprehensive as to warrant adoption in the operational CaPA configuration, although availability in experimental versions is recommended. en_US
dc.subject bias en_US
dc.subject semivariogram en_US
dc.subject precipitation en_US
dc.subject anisotropy en_US
dc.title Investigation of enhancements to two fundamental components of the statistical interpolation method used by the Canadian Precipitation Analysis (CaPA) en_US
dc.degree.discipline Civil Engineering en_US
dc.contributor.examiningcommittee Stadnyk, Tricia (Civil Engineering) Acar, Elif (Statistics) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note February 2014 en_US


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