Trends of Extreme Events in Precipitation and Temperature during the1986-2015 Period at Cairo, Egypt

ABSTRACT

Daily temperature and precipitation were analyzed for Cairo (Latitude 30.18° S, Longitude: 31.2° E in Egypt.

The study objective was to evaluate the climate indices for extreme weather conditions on temperature and precipitation from 1986 to 2015.

Quality and homogeneity of the time series data were checked using ClimPACT2 software package was used to compute the indices. Annual maximum temperature were statistically significant with a negative linear trend (R²=0.0043). Additionally, results showed a amplitude heat wave Decrease in absolute indices .

The maximum warmest daily temperature (TXx) index showed a predominant decrease in the monthly and annual maximum value of daily maximum temperature at Cairo. The minimum warmest daily temperature (TXn) showed a similar trend for the annual value. The Daily Temperature Range (DTR) significantly decreased annually resulting in a linear slope of 0.0478.

Results also showed that the daily mean temperature (TMm) and mean daily maximum temperature (TXm) had increased from 1986 - 2015.