Effect of autocorrelation on temporal trends in air-temperature in Northern Algeria and links with teleconnections patterns

This study investigates the effect of autocorrelation on temporal trends and step change a monthly, seasonal annual temperatures six meteorological stations over North Algeria. Afterwards, links between general atmospheric circulation, via climate indices, temperature data are examined. The in analysed using different versions Mann-Kendall approach while, changes time series defined original Pettitt test modified-Pettitt. Statistical tests have shown an increase from 0.8 to 0.9°C since 1980s coastal regions 1990s highlands. warming most often exceeds 1°C scale, particularly summer; however, no significant trend is observed winter. On monthly marked April October. analysis relationships indices average has that inter-annual variability associated with East Atlantic oscillation for entire area. winter influenced by Mediterranean as well oscillation. dominant mode circulation spring summer, whereas autumn, strongly linked West However, correlations been Arctic El Nino southern