Contribution à la caractérisation du changement climatique du bassin versant des hauts plateaux constantinois (07)

Abstract

The Constantine Plateau watershed area BV07, like all watersheds, is subject to climate change, and in order to highlight its impact, we selected seven climate stations 070105, 070201, 070312, 070403, 070502, 070607, and 070708, one in each sub-catchment chosen according to their representative geographical distribution. First, we exhibited a physical representation of the Hauts plateau Constantinois watershed, located in the northeast of Algeria, with an average rainfall of 368.17 mm and an average temperature of 14.74°C (series 1958-2023). For the same series, using statistical tests such as the Mann-Kendall test, Mill-Sen test, Pettit test and others, applied to the time series of annual precipitation values, we were able to identify the 2011 outage years for stations 070105, 070201 and 2013 for stations 070312, 070403, 070502, 070607, We found that all stations have a negative trend, as the average annual precipitation before the refractory years is greater than after the refractory years. An innovative trend analysis method (TIA) was used to show that all stations have a positive trend in temperature.