AN ANALYSIS OF 1990-2011 ONTARIO SURFACE AIR TEMPERATURES

The paper's concern is the estimation of the average monthly temperature across a given region as a function of time. The region studied here is the Canadian province of Ontario and the time unit is month. Data for various stations and times were obtained from the Berkeley Earth website, (http://www.berkeleyearth.org). In this paper a generalized additive model with random effects is employed that allows both spatial and temporal dependence. Handling variability in both space and time is basic.