Articles | Volume 383
https://doi.org/10.5194/piahs-383-61-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/piahs-383-61-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Pre-conference publication
| 
16 Sep 2020
Pre-conference publication |
| 16 Sep 2020
| 16 Sep 2020
Study of the spatial and temporal variability of rainfall in the Middle and Lower Cheliff (Algeria)
Ali Hadour
CORRESPONDING AUTHOR
Ecole Nationale Supérieure de l'Hydraulique, 29 route de Soumaâ, Blida, Algeria
UMR HydroSiences Montpellier/IRD, Montpellier, France
Gil Mahé
UMR HydroSiences Montpellier/IRD, Montpellier, France
Mohamed Meddi
Ecole Nationale Supérieure de l'Hydraulique, 29 route de Soumaâ, Blida, Algeria
Related authors
No articles found.
Abderraouf Hzami, Oula Amrouni, Essam Heggy, Gil Mahé, and Hechmi Missaoui
Proc. IAHS, 385, 377–385, https://doi.org/10.5194/piahs-385-377-2024, https://doi.org/10.5194/piahs-385-377-2024, 2024
Short summary
Short summary
Natural and anthropogenic causes of coastal environmental change are significantly linked to the sediment dynamics of the coastal lagoon on the North African coast, through both the variability of continental input and the coastal marine geomorphology. Temporal analysis of the aerial and orbital photogrammetry suggests that ~ 70 % of the Ghar El Melh coast.
Marc Auriol Amalaman, Gil Mahé, Béh Ibrahim Diomande, Armand Zamblé Tra Bi, Nathalie Rouché, Zeineddine Nouaceur, and Benoit Laignel
Proc. IAHS, 385, 365–370, https://doi.org/10.5194/piahs-385-365-2024, https://doi.org/10.5194/piahs-385-365-2024, 2024
Short summary
Short summary
L’objectif de ce travail est d’analyser les liens entre les indices climatiques et la variabilité des séries de précipitations et de débits. La méthode a consisté à rechercher les changements survenus dans ces données à travers la variabilité du signal. Ainsi, au niveau de l’analyse interannuelle et saisonnière, le signal indique une forte oscillation marquée par une prédominance de la couleur rouge. L’utilisation de l’indice ENSO montre que le phénomène El-Niño impacte le débit et la pluie.
Domiho Japhet Kodja, Gandomè Mayeul Leger Davy Quenum, Houteta Djan'na Koubodana, Ernest Amoussou, Isaiah Sewanu Akoteyon, Arsène Sègla Josué Akognongbé, Mahougnon Fidèle Ahéhéhinnou Yêdo, Gil Mahé, Jean-Emmanuel Paturel, Expédit Wilfrid Vissin, and Constant Houndénou
Proc. IAHS, 385, 359–364, https://doi.org/10.5194/piahs-385-359-2024, https://doi.org/10.5194/piahs-385-359-2024, 2024
Short summary
Short summary
The results showed that there is an variability in the spatial distribution of extreme indices with an upward and downward trend of dry and wet rainfall periods in West Africa in both historical and projected periods. Thus, the results revealed that the spatio- temporal variability of extreme rainfall can have repercussions on the hydrological functioning of watersheds, water availability and water-dependent activities.
Golab Moussa Omar, Jean-Emmanuel Paturel, Christian Salles, Gil Mahé, Mohamed Jalludin, Frédéric Satgé, Mohamed Ismail Nour, and Abdillahi Hassan Hersi
Proc. IAHS, 385, 59–64, https://doi.org/10.5194/piahs-385-59-2024, https://doi.org/10.5194/piahs-385-59-2024, 2024
Short summary
Short summary
The Republic of Djibouti is a small country in the Horn of Africa and as with most regions of Africa, rain gauges are sparse. This study aims to compare at different time steps (annual, monthly, and daily) 15 rainfall estimation products (P-datasets) to 5 reference ground-based rainfall stations, over the period of 1980–1990. To classify the reliability of these products, several metrics were considered, the Kling Gupta Efficiency (KGE) and the Heidle Skills Scores (HSS at daily time step).
Ernest Amoussou, Félix Toundé Amoussou, Aymar Yaovi Bossa, Domiho Japhet Kodja, Henri Sourou Totin Vodounon, Constant Houndénou, Valérie Borrell Estupina, Jean-Emmanuel Paturel, Gil Mahé, Christophe Cudennec, and Michel Boko
Proc. IAHS, 385, 141–146, https://doi.org/10.5194/piahs-385-141-2024, https://doi.org/10.5194/piahs-385-141-2024, 2024
Short summary
Short summary
The objective is to assess the causes of exceptional floods in the Ouémé basin using the HEC-RAS model. The results of the calculation made it possible to characterize: the losses and damage due to human settlement on the banks and agricultural production in the flood zone, the flooded extent and the height of submersion depend on the return period, most of the Flood waters converge towards the west of the basin (low risk) and towards the east around the Damè-Wogon depression (high risk).
Rajae El Aoula, Gil Mahé, Nadia Mhammdi, Abdellatif Ezzahouani, Ilias Kacimi, and Kenza Khomsi
Proc. IAHS, 384, 163–168, https://doi.org/10.5194/piahs-384-163-2021, https://doi.org/10.5194/piahs-384-163-2021, 2021
Oula Amrouni and Gil Mahé
Proc. IAHS, 384, 133–139, https://doi.org/10.5194/piahs-384-133-2021, https://doi.org/10.5194/piahs-384-133-2021, 2021
Short summary
Short summary
Our multidisciplinary study reveals an alarming trend of beach retreat reaching −20 m ± 0.15 m yr−1 after the human-induced change over the hydrological network where ~ 50 % of sediment discharge has been trapped upstream the dams. Accros the semi arid north African coasts, the rapid shoreline retreat is due to the decreasing of sediment fluvial discharge trapped by the dam infrastrcture.
Gil Mahé, Gamal Abdo, Ernest Amoussou, Telesphore Brou, Stephan Dietrich, Ahmed El Tayeb, Henny van Lanen, Mohamed Meddi, Anil Mishra, Didier Orange, Thi Phuong Quynh Le, Raphael Tshimanga, Patrick Valimba, Santiago Yepez, Andrew Ogilvie, and Oula Amrouni
Proc. IAHS, 384, 5–18, https://doi.org/10.5194/piahs-384-5-2021, https://doi.org/10.5194/piahs-384-5-2021, 2021
Short summary
Short summary
The FRIEND-Water program (FWP) is the oldest and the most transverse program within the UNESCO IHP. It allows large communities of hydrologists to collaborate across borders on common shared data and scientific topics, addressed through 8 large world regions. Research priorities evolve according to the projections given by the member States during the IHP councils. FWP further activities follow the IHP IX program with the support of the Montpellier UNESCO Category II Center ICIREWAD.
Valentin Brice Ebodé, Gil Mahé, and Ernest Amoussou
Proc. IAHS, 384, 247–253, https://doi.org/10.5194/piahs-384-247-2021, https://doi.org/10.5194/piahs-384-247-2021, 2021
Short summary
Short summary
The objective of this article is to assess recent trends of hydroclimatic quantities in Ogooue basin in the context of climate change. For this, the rainfall and discharges data of this basin were analyzed using the Pettitt test. The results of this study reveal a statistically significant decrease in runoff that the Pettitt test situates in 1972–73, but nothing like that for rainfall at this same time scale.
Valentin Brice Ebodé, Gil Mahé, and Ernest Amoussou
Proc. IAHS, 384, 261–267, https://doi.org/10.5194/piahs-384-261-2021, https://doi.org/10.5194/piahs-384-261-2021, 2021
Short summary
Short summary
La sécheresse observée en Afrique tropicale vers la fin des années 1960, a également affecté le bassin de la Bénoué en Afrique centrale, avec une persistance remarquable qui s’est répercutée sur les écoulements. Les ruptures à la baisse ont été mises en évidence dans les séries hydropluviométriques de ce bassin au pas de temps annuel en 1970–71 (pluies) et 1971–72 (débits). Les déficits associés à cette rupture sont de −2,9 % pour les pluies et −14,2 % pour les débits.
Sakaros Bogning, Frédéric Frappart, Gil Mahé, Adrien Paris, Raphael Onguene, Fabien Blarel, Fernando Niño, Jacques Etame, and Jean-Jacques Braun
Proc. IAHS, 384, 181–186, https://doi.org/10.5194/piahs-384-181-2021, https://doi.org/10.5194/piahs-384-181-2021, 2021
Short summary
Short summary
This paper investigates links between rainfall variability in the Ogooué River Basin (ORB) and El Niño Southern Oscillation (ENSO) in the Pacific Ocean. Recent hydroclimatology studies of the ORB and surrounding areas resulting in contrasting conclusions about links between rainfall variability and ENSO. Then, this work uses cross-wavelet and wavelet coherence analysis to highlight significant links between ENSO and rainfall in the ORB.
Ernest Amoussou, Gil Mahe, Oula Amrouni, Ansoumana Bodian, Christophe Cudennec, Stephan Dietrich, Domiho Japhet Kodja, and Expédit Wilfrid Vissin
Proc. IAHS, 384, 1–4, https://doi.org/10.5194/piahs-384-1-2021, https://doi.org/10.5194/piahs-384-1-2021, 2021
Short summary
Short summary
This short paper is the preface of the PIAHS volume of the IAHS/UNESCO FRIEND-Water conference of Cotonou in November 2021.
Golab Moussa Omar, Jean-Emmanuel Paturel, Christian Salles, Gil Mahé, and Mohamed Jalludin
Proc. IAHS, 384, 225–231, https://doi.org/10.5194/piahs-384-225-2021, https://doi.org/10.5194/piahs-384-225-2021, 2021
Short summary
Short summary
Le district de Djibouti est situé dans le bassin versant de l’Oued Ambouli qui par sa nappe aquifère procure la source principale d’alimentation en eau potable de la ville de Djibouti, mais est aussi à l’origine de crues rares et brèves avec de lourds bilans humains et économiques Le développement du district se traduit par une expansion urbaine et un développement des activités qui accentuent le risque inondation.
Faiza Hallouz, Abdelhadi Ammari, Mohamed Meddi, Ouarda Yasmine Nait Yahia, and Ali Rahmani Salah Eddine
Proc. IAHS, 384, 155–161, https://doi.org/10.5194/piahs-384-155-2021, https://doi.org/10.5194/piahs-384-155-2021, 2021
Short summary
Short summary
Le taux de sédimentation des barrages du bassin hydrographique du Cheliff reste le plus élevé de toutes les régions de l’Algérie. L’oued Mina est un affluent majeur de l’oued Cheliff, le plus grand oued de l’Algérie qui transporte un taux de sédiment important et le barrage de Sidi M’Hamed Ben Aouda (Relizane) qui barre cet oued a reçu un volume de vase égal à 6,7 millions de m3 par année.
Yves Tramblay, Nathalie Rouché, Jean-Emmanuel Paturel, Gil Mahé, Jean-François Boyer, Ernest Amoussou, Ansoumana Bodian, Honoré Dacosta, Hamouda Dakhlaoui, Alain Dezetter, Denis Hughes, Lahoucine Hanich, Christophe Peugeot, Raphael Tshimanga, and Patrick Lachassagne
Earth Syst. Sci. Data, 13, 1547–1560, https://doi.org/10.5194/essd-13-1547-2021, https://doi.org/10.5194/essd-13-1547-2021, 2021
Short summary
Short summary
This dataset provides a set of hydrometric indices for about 1500 stations across Africa with daily discharge data. These indices represent mean flow characteristics and extremes (low flows and floods), allowing us to study the long-term evolution of hydrology in Africa and support the modeling efforts that aim at reducing the vulnerability of African countries to hydro-climatic variability.
Senna Bouabdelli, Ayoub Zeroual, Mohamed Meddi, Fateh Djelloul, and Ramdane Alkama
Proc. IAHS, 383, 315–318, https://doi.org/10.5194/piahs-383-315-2020, https://doi.org/10.5194/piahs-383-315-2020, 2020
Short summary
Short summary
The temporal evolution of drought events characteristics is discussed.
Data from observations and simulations of the regional climate model RCA4 MPI-ESM-LR under two Representative Concentration Pathways (RCPs) scenarios for the period (1941–2100) are used. An amplification of drought frequencies is projected in the future under the RCP8.5 scenario. The maximum duration is expected to hardly change under the RCP8.5 scenario or even to decline.
Fatima Hara, Mohammed Achab, Anas Emran, and Gil Mahe
Proc. IAHS, 383, 159–162, https://doi.org/10.5194/piahs-383-159-2020, https://doi.org/10.5194/piahs-383-159-2020, 2020
Domiho Japhet Kodja, Arsène J. Sègla Akognongbé, Ernest Amoussou, Gil Mahé, E. Wilfrid Vissin, Jean-Emmanuel Paturel, and Constant Houndénou
Proc. IAHS, 383, 163–169, https://doi.org/10.5194/piahs-383-163-2020, https://doi.org/10.5194/piahs-383-163-2020, 2020
Zhongbo Yu, Chunhui Lu, Jianyuan Cai, Dazheng Yu, Gil Mahe, Anil Mishra, Christophe Cudennec, Henny A. J. Van Lanen, Didier Orange, and Abou Amani
Proc. IAHS, 383, 3–4, https://doi.org/10.5194/piahs-383-3-2020, https://doi.org/10.5194/piahs-383-3-2020, 2020
Short summary
Short summary
The 8th Global FRIEND conference highlighted the advance in hydrological science and innovation in water management. 52 accepted papers cover study areas in precipitation and climate impact; observation, analysis and simulations of hydrologic processes; floods in the changing environments; drought monitoring and analysis; water resources and environmental impacts. The outcome of the conference presented in the proceedings will be shared and discussed widely among UNESCO IHP networks.
Thouraya Benmoussa, Oula Amrouni, Laurent Dezileau, Gil Mahé, and Saâdi Abdeljaouad
Proc. IAHS, 377, 77–81, https://doi.org/10.5194/piahs-377-77-2018, https://doi.org/10.5194/piahs-377-77-2018, 2018
Ernest Amoussou, Henri S. Totin Vodounon, Expédit W. Vissin, Gil Mahé, and Marc Lucien Oyédé
Proc. IAHS, 377, 91–96, https://doi.org/10.5194/piahs-377-91-2018, https://doi.org/10.5194/piahs-377-91-2018, 2018
Fatma Kotti, Laurent Dezileau, Gil Mahé, Hamadi Habaieb, Malik Bentkaya, Claudine Dieulin, and Oula Amrouni
Proc. IAHS, 377, 67–76, https://doi.org/10.5194/piahs-377-67-2018, https://doi.org/10.5194/piahs-377-67-2018, 2018
Short summary
Short summary
This study was designed to prove that the coastal changes of the Gulf of Tunis are mainly driven by the changes of the hydrological regime of the Medjerda river due to dams. We sampled cores of sediments in the low valley just before the sea, and analyzed them. They show the dramatic reduction of sediment supply after 1981, date of construction of the largest dam of Sidi Salem, and the disappearance of sand in the fluvial sediments.
Gil Mahe, Kate Heal, Akhilendra B. Gupta, and Hafzullah Aksoy
Proc. IAHS, 377, 1–1, https://doi.org/10.5194/piahs-377-1-2018, https://doi.org/10.5194/piahs-377-1-2018, 2018
Kenza Khomsi, Gil Mahe, Yves Tramblay, Mohamed Sinan, and Maria Snoussi
Nat. Hazards Earth Syst. Sci., 16, 1079–1090, https://doi.org/10.5194/nhess-16-1079-2016, https://doi.org/10.5194/nhess-16-1079-2016, 2016
Short summary
Short summary
The study investigates trends in mean and extreme rainfall, run-off, temperature and their relationship with large-scale atmospheric circulation. It focuses on two Moroccan watersheds; Bouregreg and Tensift, using data from 1977 to 2003. Results do not show a homogeneous behaviour in the catchments; the influence of the large-scale atmospheric circulation is different and a clear spatial dependence of the trend analysis is linked to the distance from the coast and the mountains.
S. Taibi, M. Meddi, and G. Mahé
Proc. IAHS, 369, 175–180, https://doi.org/10.5194/piahs-369-175-2015, https://doi.org/10.5194/piahs-369-175-2015, 2015
Short summary
Short summary
Cette étude vise à analyser les tendances des pluies extrêmes dans un bassin semi-aride du Nord de l’Algérie et leur relation avec les types de circulation atmosphérique. Les pluies totales et l’intensité journalière ont connu une baisse significative durant la période 1971-2010 montre des tandis que leur fréquence ne montre pas de changement significatif.
L’oscillation méditerranéenne est le type de circulation qui influence la variabilité des pluies extrêmes du bassin du Chéliff
Cited articles
Bodian, A.: Caractérisation de la variabilité temporelle
récente des précipitations annuelles au Sénégal (Afrique de
l'Ouest), Physio-Géo. Géographie physique et environnement, 8, 297–312, 2014.
Boyer, J.-F.: Logiciel Khronostat d’analyse statistique de séries chronologiques. IRD UR2 Programme 21 FRIEND AOC, Equipe Hydrologie UMRGBE, Université de Montpellier II, Ecole des Mines de Paris, France, 1998.
IPCC: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment
Report of the Intergovernmental Panel on Climate Change, edited by: Solomon, S., Qin, D., Manning, M., Chen, Z., Marquis, M., Averyt, K. B., Tignor,
M., and Miller, H. L., Cambridge University Press, Cambridge, UK and New York, NY, USA, 996 pp., 2007.
IPCC: Climate Change 2014: Mitigation of Climate Change. Contribution of Working Group III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Edenhofer, O., Pichs-Madruga, R., Sokona, Y., Farahani, E., Kadner, S., Seyboth, K., Adler, A., Baum, I., Brunner, S., Eickemeier, P., Kriemann, B., Savolainen, J., Schlömer, S., von Stechow, C., Zwickel, T., and Minx, J. C., Cambridge University Press, Cambridge, UK and New York, NY, USA, 161 pp., 2014.
Davis, J. C.: Statistics and Data Analysis in Geology, John Wiley and Sons, New York, USA,
656 pp., 1986.
Franke, R.: Scattered data interpolation: tests of some methods, Math. Comput., 38, 181–200, 1982.
Ghenim, A. N. and Megnounif, A.: Analyse des précipitations dans le
Nord-Ouest algérien, Science et changements
planétaires/Sécheresse, 24, 107–114, 2013.
Hallouz, F., Meddi, M., and Mahe, G.: Modification du régime
hydroclimatique dans le bassin de l'Oued Mina (nord-ouest
d'Algérie), Revue des sciences de l'eau/Journal of Water Science, 26,
33–38, 2013.
Hiez, G.: L'homogénéité des données
pluviométriques, Cahiers ORSTOM, série Hydrologie, 14, 29–173,
1977.
Hubert, P. and Carbonnel, J. P.: Approche statistique de l'aridification de
l'Afrique de l'Ouest, J. Hydrol., 95, 165–183, 1987.
Kingumbi, A., Bargaoui, Z., and Hubert, P.: Investigation of the rainfall
variability in central Tunisia/Investigations sur la variabilité
pluviométrique en Tunisie centrale, Hydrolog. Sci.
J., 50, p. 508, https://doi.org/10.1623/hysj.50.3.493.65027, 2005.
Kotti, F. C., Mahe, G., Habaieb, H., Dieulin, C., Calvez, R., and Ali, H. B.:
Etude des pluies et des débits sur le bassin versant de la Medjerda,
Tunisie Study of rainfall and discharges in the Medjerda watershed,
Tunisia, Bulletin de l'Institut Scientifique, Rabat, 38, 19–28, 2016.
Lee, A. F. and Heghinian, S. M.: A Shift Of The Mean Level In A Sequence Of
Independent Normal Random Variables – A Bayesian
Approach, Technometrics, 19, 503–506, 1977.
Mahé, G. and L'Hôte, Y.: Utilisation de la Méthode du Vecteur
Régional pour la description des variations pluviométriques
interannuelles en Afrique de l'Ouest et centrale de 1951 à
1989, Régionalisation en hydrologie: application au développement.
Huitièmes Journées Hydrologiques de l'ORSTOM, Montpellier, France, 22–23,
1992.
Mahé, G. and Olivry, J. C.: Variations des précipitations et des
écoulements en Afrique de l'Ouest et centrale de 1951 à
1989, Science et changements planétaires/Sécheresse, 6, 109–117,
1995.
Meddi, M. and Hubert, P.: Impact de la modification du régime pluviométrique sur les ressources en eau du nord-ouest de l’Algérie, in: Hydrology of the Mediterranean and Semiarid Regions, IAHS Publ, 278, 229–235, 2003.
Meddi, H. and Meddi, M.: Variabilité spatiale et temporelle des
précipitations du Nord-Ouest de l'Algérie, Géographia
technica, 2, 49–55, 2007.
Meddi, M., Assani, A., and Meddi, H.: Temporal variability of annual rainfall
in the Macta and Tafna catchments, Northwestern Algeria, Water Resour.
Manag., 24, 3817–3833, 2010.
Pettitt, A.: A non-parametric approach to the change-point problem, J. Roy. Stat. Soc. C-App., 28.2, 126–135, 1979.
Salameh, T.: Modelisation multi-echelles de la circulation
atmospherique sur le bassin mediterraneen, Doctoral dissertation, Ecole
Polytechnique X, Paris, France, 2008.
Singla, S., Mahé, G., Dieulin, C., Driouech, F., Milano, M., El Guelai,
F. Z., and Ardoin-Bardin, S.: Evolution des relations pluie-débit sur des
bassins versants du Maroc, Global Change: Facing Risks and Threats to Water Resources, Proc. Of the Sixth
World FRIEND Conference, Fez, Morocco, IAHS. 340, 679–687, 2010.
Taibi, S., Meddi, M., Souag, D., and Mahé, G.: Évolution et
régionalisation des précipitations au nord de l'Algérie
(1936–2009), Climate and land surface changes in hydrology, IAHS Publ, 359,
191–197, 2013.
Taibi, S., Meddi, M., Mahé, G., and Assani, A.: Relationships between
atmospheric circulation indices and rainfall in Northern Algeria and
comparison of observed and RCM-generated rainfall, Theor. Appl.
Climatol., 127, 241–257, 2017.
Vauchel, P.: Hydraccess: Software for Management and processing of
Hydro–meteorological data software, Version 2.1.4, available at: https://www.documentation.ird.fr/hor/fdi:010026171 (last access: 5 August 2020), 2005.
WWAP (United Nations World Water Assessment Programme)/UN-Water: The United Nations World Water
Development Report 2018: Nature-Based Solutions for Water, UNESCO, Paris, France, 154 pp., 2018.
Xoplaki, E., González-Rouco, J. F., Luterbacher, J., and Wanner, H.: Wet
season Mediterranean precipitation variability: influence of large-scale
dynamics and trends, Clim. Dynam., 23, 63–78, 2004.
Short summary
The downward of rainfall trend occurred in the study area in 1972, affecting a few coastal stations. In 1976, this decline extended to the South West and throughout the coastal region. In 1980, the drop covered the entire basin. This decline has resulted in an estimated deficit of 30 % on average in the eastern region, the coastal region and the Mina. However, the central part of the basin experienced a 20 % decrease compared to the period before the break (1968–1980).
The downward of rainfall trend occurred in the study area in 1972, affecting a few coastal...
