Temperature fluctuation and monthly total rainfall variations are observed.
Monthly averages of minimum and maximum temperature for January 2002 to January 2005 [34], monthly total rainfall for January 2006 to December, 2006 [35], the monthly averages of total rainfall for the year 2002 from January to December [36] are obtained from the sources, readily available.
Time series methodology was then applied to the monthly aggregates.
They including four meteorological factors (i.e., monthly average temperature, monthly average relative humidity, monthly cumulative rainfall, and monthly total sunshine).
The highest monthly rainfall total, 333 mm, occurs in August.
The considered variables were total annual, seasonal and monthly rainfall; annual, seasonal and monthly maximum rainfall; and the number of rainy days per year, season and month.
Fig. 2 Mean monthly rainfall and mean monthly temperature records of study area.
Season, time, and lags (lag 0 4) for both monthly rainfall and average monthly temperature were generated as well.
Anomaly P is defined as the difference between the monthly observed rainfall and the long-term monthly average rainfall.
The rainfall value in every Thiessen polygons was used to calculate the monthly average rainfall and annual average rainfall.
