Did the global warming confirm in central northern Sahara (case of the Ouargla region )?

摘要

Climate change shows itself in various scales in the Mediterranean and Sahara region. The study aims at characterizing climate of the Sahara in a bigger scale otherwise-said, precision as for the current climate reigning (evolution), at the level of the region of Ouargla. For that purpose, we adopted a complementary, dynamic and static approach. The dynamic approach was approached by compilations of the previous works. Followed by a static analysis, leaning on climatological data, spread over a period going from 1978 till 2015. It emerges from it that the dynamic character is characterized by the frequency of the regime NAO + with regard to that of the NAO-. This regime expresses himself daily, in terms, of temperature and haste, explaining the importing lived reheating these last decades. So, the results show that the region is characterized by a "hot" thermoclimate, expressed by all the energy parameters (rise of the fraction of sunstroke and the temperature) and a "dry"ombroclimate.