Article
Infectious Diseases
Raymond Babila Nyasa, Fuanyi Awatboh, Tebit Emmanuel Kwenti, Vincent P. K. Titanji, Ndip Lucy M. Ayamba
Summary: This study investigates the influence of humidity, temperature, and rainfall on malaria incidence in different regions. The findings suggest that humidity negatively affects malaria cases in inland areas, while higher seasonal temperatures and lower rainfall increase malaria cases in coastal areas.
BMC INFECTIOUS DISEASES
(2022)
Article
Meteorology & Atmospheric Sciences
Shan He, Song Yang, Dake Chen
Summary: This study applies causal inference theory to attribute climatic anomalies and demonstrates its advantage in prediction. The results show that even without large-sample-size data and substantial human intervention, the causal inference approach can reveal the causes of climatic anomalies and construct reliable predictive models.
JOURNAL OF CLIMATE
(2022)
Article
Meteorology & Atmospheric Sciences
Lianlian Xu, Tuantuan Zhang, Aihui Wang, Wei Yu, Song Yang
Summary: Southeast Asia experiences heavy precipitation, which provides substantial energy for global atmospheric circulation. Through classification analysis, three extreme precipitation patterns and five total precipitation patterns during the summer in Southeast Asia are identified. These patterns are closely related to sea surface temperature anomalies in different regions. Comparing extreme and total precipitation can enhance our understanding of regional variabilities and relationships, as well as their global impacts.
JOURNAL OF CLIMATE
(2022)
Article
Multidisciplinary Sciences
Li-Chiao Wang, Yong-Fu Lin, Chau-Ron Wu
Summary: Long-term reanalysis data were used to investigate the inter-decadal to decadal modulations of the North Equatorial Current (NEC) bifurcation in the Pacific after the early 1990s. It was found that the wind stress curl anomaly (WSCA) in the C-BOX region has been remotely modulated by the Southern Annular Mode (SAM) since the early 1990s, leading to a shift in NEC bifurcation towards the equator.
SCIENTIFIC REPORTS
(2022)
Article
Meteorology & Atmospheric Sciences
Adam T. Hartman
Summary: The Congo basin in central Africa experiences intense convection through mesoscale convective systems (MCSs) during the rainy seasons. This study tracks MCSs over a 33-year period and identifies seasonal differences using satellite and reanalysis data. Results show significant variability and differences between seasons, with potential localized terrain effects near the Great Rift Valley.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2021)
Article
Food Science & Technology
Moye Eric Kongnso, Umaru Hassan Buba, Julius Tata Nfor
Summary: This study examines the impact of climate variability on agro-pastoral resources and food security within the Mbororo communities, highlighting the crucial link between climate, land, and water in mountain farming. Issues such as overgrazing and degradation are caused by environmental stressors, with a significant percentage of degradation attributed to these factors.
FRONTIERS IN SUSTAINABLE FOOD SYSTEMS
(2021)
Article
Environmental Sciences
Niranga Alahacoon, Mahesh Edirisinghe, Matamyo Simwanda, E. N. C. Perera, Vincent R. Nyirenda, Manjula Ranagalage
Summary: This study examines rainfall variability and trends in Africa using TAMSAT data from 1983 to 2020. The findings show that certain regions have higher annual rainfall trends, while others have lower trends. There is a statistically significant increase in rainfall in countries located in the northern and central parts of Africa, while no significant change is observed in countries in the southern and eastern regions. The study also reveals a significant increase in rainfall in certain tropical climate zones. These findings are crucial for decision-makers involved in crop planning and water resource management.
Article
Meteorology & Atmospheric Sciences
Kevin Schwarzwald, Andrew Poppick, Maria Rugenstein, Jonah Bloch-Johnson, Jiali Wang, David McInerney, Elisabeth J. Moyer
Summary: Changes in precipitation variability may increase more steeply than its mean in future climate projections, leading to concerns about societal impacts. At local scales, changes in precipitation distributions are complex, while at aggregated scales they become simpler. Precipitation variability changes are especially concerning in subtropical regions.
JOURNAL OF CLIMATE
(2021)
Article
Water Resources
Afaf Bouklikha, Mohammed Habi, Abdelkader Elouissi, Saaed Hamoudi
Summary: The study, based on monthly rainfall data from 17 stations in the Tafna catchment (North West of Algeria), reveals a decreasing trend in precipitation during February to May at all stations, as well as a downward trend in winter and spring rainfall in most stations.
APPLIED WATER SCIENCE
(2021)
Article
Meteorology & Atmospheric Sciences
Mong-Ming Lu, Wayne Yuan -Huai Tsai, Sheng-Feng Huang, Yin -Min Cho, Chung-Hsiung Sui, Ana L. S. Solis, Meng-Shih Chen
Summary: During the first half month of April 2022, the Philippines experienced severe disasters associated with tropical storm Megi, resulting in numerous deaths and sunken ships. The study found that S2S models have good predictive skills for extreme rainfall events ten days in advance. The findings also revealed a strong relationship between ENSO and springtime rainfall variability in the Philippines.
WEATHER AND CLIMATE EXTREMES
(2023)
Article
Meteorology & Atmospheric Sciences
Siyan Dong, Ying Sun, Chao Li, Xuebin Zhang, Seung-Ki Min, Yeon-Hee Kim
Summary: The study evaluates changes in percentile-based precipitation extreme indices, showing increases in most land areas with observations during global warming. CMIP6 models replicate overall increases, but with some regions experiencing considerable over- or underestimations. Fingerprinting analysis reveals detectable anthropogenic signals globally and continentally, with greenhouse gas signals separately detectable over the globe and over Asia. Conversely, signals of anthropogenic aerosols and natural forcings cannot be detected in any of these indices at either global or continental scales.
JOURNAL OF CLIMATE
(2021)
Letter
Geosciences, Multidisciplinary
Omid Bozorg-Haddad, Babak Zolghadr-Asli, Xuefeng Chu, Hugo A. Loaiciga
Summary: In March 2019, Iran experienced three major floods with heavy damages, causing at least 78 fatalities. The historical data suggests that human alteration to natural cycles may have played a dominant role in these devastating flood events.
Article
Meteorology & Atmospheric Sciences
Nicolas Diaz, Marcelo Barreiro, Nicolas Rubido
Summary: The South American dipole (SAD) is the main mode of rainfall variability in South America. This study investigates the intraseasonal predictability of the SAD in relation to the Madden-Julian oscillation (MJO). Significant predictability windows for the SAD's extreme states emerge up to 10-20 days after the MJO is found in phase 2.
JOURNAL OF CLIMATE
(2022)
Article
Environmental Sciences
Zineb Zamrane, Gil Mahe, Nour-Eddine Laftouhi
Summary: This study utilized wavelet analysis to compare rainfall and runoff series in Morocco, detecting various modes of variability specific to certain stations. By complementing the analysis with gridded data, a better understanding of spatial variability, identified frequencies, and discontinuities was achieved. The contribution of climatic indices was found to be significant, ranging from 55% to 80%.
Article
Multidisciplinary Sciences
Eranga M. Wimalasiri, Matthew J. Ashfold, Ebrahim Jahanshiri, Sue Walker, Sayed N. Azam-Ali, Asha S. Karunaratne
Summary: Current agricultural production is at risk due to climate change as it is heavily dependent on a few vulnerable monocultures. However, neglected crop species have the potential to address the challenges of climate change by adapting to adverse climate conditions.
Article
Environmental Sciences
Boubacar Ibrahim, Yahaya Nazoumou, Tazen Fowe, Moussa Sidibe, Boubacar Barry, Gil Mahe, Jean-Emmanuel Paturel
Summary: A method is developed in this study to determine a stationary baseline period for rainfall variability analysis, finding that the longest stationary period is during 1917-1946. The study also shows that the period from 1950-1970 had the most significant wet years, while the period from 1971-1990 had the most significant dry years during the 1901-2018 timeframe.
Article
Meteorology & Atmospheric Sciences
Kwok Pan Chun, Bastien Dieppois, Qing He, Moussa Sidibe, Jonathan Eden, Jean-Emmanuel Paturel, Gil Mahe, Nathalie Rouche, Julian Klaus, Declan Conway
Summary: West Africa displays decadal patterns in droughts and floods behavior, posing challenges to effective water resources management. Recent studies suggest that monitoring sea-surface temperature anomalies in different ocean basins could predict prolonged periods of high-flows or increasing flood occurrences. Climate conditions, such as ENSO, TIO, and EMED, play a significant role in modulating hydrological conditions in the region.
WEATHER AND CLIMATE EXTREMES
(2021)
Article
Water Resources
Papa Malick Ndiaye, Ansoumana Bodian, Lamine Diop, Alain Dezetter, Etienne Guilpart, Abdoulaye Deme, Andrew Ogilvie
Summary: This study evaluated the trends of reference evapotranspiration (ET0) in the Senegal River Basin, finding that regional climate models (RCMs) were more robust than global circulation models (GCMs). ET0 was found to be more sensitive to relative humidity, maximum temperature, and solar radiation, with significant increases projected in ET0, maximum and minimum temperatures in the period 2036-2065.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2021)
Article
Geosciences, Multidisciplinary
Rajae El Aoula, Nadia Mhammdi, Laurent Dezileau, Gil Mahe, Alexander S. Kolker
Summary: Recent reductions in sediment transport in the Bouregreg River and estuary near the city of Rabat in Morocco have been attributed to a combination of human activities, climate variability, and natural events. Research indicates that the installation of a dam in 1974 has had a significant impact on sediment transport rates, with climate change also becoming a growing concern for the future.
JOURNAL OF AFRICAN EARTH SCIENCES
(2021)
Article
Environmental Sciences
Valentin Brice Ebode, Jean Jacques Braun, Bernadette Nka Nnomo, Gil Mahe, Elias Nkiaka, Jean Riotte
Summary: Climate change, variability, and land use change are the main drivers of river discharge variability. The decrease in rainfall is synchronous with the decrease in discharges in large basins, while it is concomitant with an increase in a small basin. Land use change has an impact on extreme discharges, with increases in impervious areas and reductions in forest cover leading to changes in discharge patterns. Precipitation in the dry season affects the flows in the following rainy seasons. The impact of precipitation on discharge varies in different seasons and time periods.
Article
Environmental Sciences
Mohamed Abdellah Ezzaouini, Gil Mahe, Ilias Kacimi, Ali El Bilali, Abdelaziz Zerouali, Ayoub Nafii
Summary: This study attempts to predict the suspended sediment load in the Bouregreg basin, Morocco, using machine learning models. The results show that most of the models have good accuracy during the prediction phase and exhibit good to excellent generalization ability.
Article
Water Resources
Yves Tramblay, El Mahdi El Khalki, Luca Ciabatta, Stefania Camici, Lahoucine Hanich, Mohamed El Mehdi Saidi, Abdellatif Ezzahouani, Lahcen Benaabidate, Gil Mahe, Luca Brocca
Summary: The lack of observed rainfall data in African countries poses a major challenge for efficient water resources management. This study evaluates the ability of satellite rainfall products to estimate river runoff in 12 basins in Morocco using four hydrological models. The results show that the combination of the SM2RAIN-ASCAT satellite product and the IHACRES model produced the best results in replicating river runoff, with the highest efficiency criterion and probability of detection. The performance of the hydrological models varied across catchments and satellite rainfall products, emphasizing the importance of careful model selection for specific applications. This evaluation suggests that SM2RAIN-ASCAT could be a reliable alternative to observed rainfall for hydrological modeling.
HYDROLOGICAL SCIENCES JOURNAL
(2023)
Editorial Material
Water Resources
Alain Dezetter, Alessio Radice
Article
Environmental Sciences
Golab Moussa Omar, Jean-Emmanuel Paturel, Christian Salles, Gil Mahe, Mohamed Jalludin, Frederic Satge, Mohamed Ismail Nour
Summary: This study aims to assess the reliability of gridded precipitation datasets (P datasets) in Djibouti through direct comparisons with rain gauge measurements. The P datasets perform differently at different temporal and spatial scales, with the most reliable product being MSWEP v.2.2. However, none of the products, including the most reliable one, can be used for calibration/validation of a hydrological model at a daily time step.
Article
Water Resources
Claude Alain Kouadio, Kouakou Lazare Kouassi, Arona Diedhiou, Salomon Obahoundje, Ernest Amoussou, Bamory Kamagate, Jean-emmanuel Paturel, Talnan Jean Honore Coulibaly, Houebagnon Saint Jean Patrick Coulibaly, Regis Sacre Didi, Issiaka Savane
Summary: This study assessed the hydropower potential at the White Bandama Watershed in Cote d'Ivoire using a hydrological model and Geographic Information System. It identified 22 potential hydropower sites with an estimated capacity of 538.56 MW.
FRONTIERS IN WATER
(2022)
Article
Geosciences, Multidisciplinary
Yves Tramblay, Nathalie Rouche, Jean-Emmanuel Paturel, Gil Mahe, Jean-Francois Boyer, Ernest Amoussou, Ansoumana Bodian, Honore Dacosta, Hamouda Dakhlaoui, Alain Dezetter, Denis Hughes, Lahoucine Hanich, Christophe Peugeot, Raphael Tshimanga, Patrick Lachassagne
Summary: The African continent currently has a low density of hydrometric stations for measuring river discharge, but the new ADHI database provides a wide range of hydrometric indices and hydrological signatures and will be regularly updated to include more stations and longer time series.
EARTH SYSTEM SCIENCE DATA
(2021)
Article
Geography
Rajae El Aoula, Gil Mahe, Nadia Mhammdi, Abdellatif Ezzahouani, Ilias Kacimi, Kenza Khomsi
Summary: The study investigates the evolution of rainfall and flow in the Bouregreg watershed over a period of 36 years, showing significant variations between sub-regions. Reduction of rainfall in January and February since the late 1970s has led to a decrease in flows at hydrological stations. The year 1996 stands out with very high precipitation levels across all sub-basins.
GEOGRAPHIA POLONICA
(2021)
