Figure 1. Representative plot of (a) Daily temperature in the Oxford study area over one year from 1^st March 2000; demonstrating a clear sinusoidal seasonal trend.

The solid line represents the effect of yearly mean temperature, , combined with temperature amplitude, , in 2000. Some variance around the predicted temperatures (the solid line) is evident, defined as (b) Daily rainfallover the Oxford study area over one year from 1^st March 2000. No seasonal trends were apparent. The year 2000 was taken as an example and while there is inter-annual variation, other years followed the same general temperature and rainfall patterns.