Analysis of meteorological drought sequences at various timescales in semi-arid climate: case of the Cheliff watershed (northwest of Algeria)

An Enhanced Innovative Triangular Trend Analysis of Rainfall Based on a Spectral Approach

“…It is also characterized by a high diversity of climate trends relating to relief, watershed orientation, and the distance from the sea. The climate of Algeria is dependent on the air mass movement (North Atlantic) cold and wet (responsible for low temperatures and heavy rains) tropical ocean; warm humid, associated with the Azores anticyclone [10,12,[15][16][17][18][19]. Therefore, the climate of Algeria is varied, since the country has a very large area.…”

“…The success of this system is not complete without the availability of analysis tools and competent persons. In Algeria, for example, despite the many kinds of research that have been done in the field of geosciences, hydrology, and water resources [10][11][12][13][14][15][16][17], it is insufficient to assess climatic conditions and their impact on the environment [18], and to find accurate future solutions to manage crises and natural disasters, such as long-term droughts, floods, and management of hydraulic structures [19]. This is due to its vast area, abundant natural resources, climate, environmental diversity, and unsatisfactory conditions to support research.…”

A new regionalization of rainfall patterns based on wavelet transform information and hierarchical cluster analysis in northeastern Algeria

“…The analysis indicated that a severe drought affected the region, and the severity and duration of the drought decreased in the eastern part of the region. Hallouz et al (2020) assessed meteorological drought during the period from 1972-2012 in the 5 semiarid climate region of northwestern Algeria. The drought analysis revealed that the rain gauges in the western region recorded the largest durations of dry sequences, and the highest values of consecutive dry days were recorded in February.…”

Evolution of the hydrological regime in relation to climate change: Case of the Bouregreg River basin, Morocco

“…Thus, the detection of trends and variations in long hydroclimatological series is relevant for climate change mitigation and adaptation strategies. Particularly, Nord African countries suffered economically, socially and ecologically from drought during the last decades as in Morocco during years from 1980 to 1985 and from 1991 to 1995 (Tsiourtis, 2001;Singla et al, 2010;Khomsi et al, 2016;Zamrane et al, 2016aZamrane et al, , 2016b, in Algeria (Taibi et al, 2017(Taibi et al, , 2019Hadour et al, 2020;Hallouz et al, 2020 andin Tunisia (Bargaoui et al, 2014;Kotti et al, 2016;Tramblay et al, 2019). Natural systems and human activities are most at risk due to lack of regular water supply during the year.…”