Prokoph, A.,Patterson, R.T. 2004. Application of wavelet and discontinuity analysis to trace temperature changes: Eastern Ontario as a case study. Atmosphere Ocean, v. 42, p. 201-212.
Regression and wavelet analysis have been employed to trace and quantify variation in temporal patterns (e.g., cycles, and trends) between the instrument climate records of urban Ottawa, and nearby rural areas in eastern Ontario. Possible links between observed climate change at these stations and possible natural and anthropogenic drivers were also investigated. Regression analysis indicates that the temperature in Ottawa increased, on average, at a rate of >0.010C/year in comparison to adjacent rural areas through the last century. Wavelet analysis (WA) shows that this relative urban warming trend was primarily manifested in the form of multidecadal and interseasonal cycles that are likely attributable to gradual increased winter heating in Ottawa (?eheat island effects?f) associated with population growth. We estimate that the 10C increase in Ottawa temperature is equivalent to ~400,000 increase in population size. In contrast, interannual variability correlates well between rural and urban areas with about the same temperature amplitudes.