Drought assessment in a south Mediterranean transboundary catchment
| Autor: | Mohamed Slimani, Khouloud Gader, Marnik Vanclooster, Slaheddine Khlifi, Ahlem Gara |
|---|---|
| Přispěvatelé: | UCL - SST/ELI/ELIE - Environmental Sciences |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Mediterranean climate
geography Water resources geography.geographical_feature_category 0208 environmental biotechnology Drainage basin Climate change 02 engineering and technology Forcing (mathematics) 020801 environmental engineering Task (project management) Water management Environmental science Water resource management Water Science and Technology |
| Zdroj: | Hydrological Sciences Journal, p. 1-16 (2020) |
| Popis: | Predicting the impacts of climate change on water resources remains a challenging task and requires a good understanding of the dynamics of the forcing terms in the past. In this study, the variability of precipitation and drought patterns is studied over the Mediterranean catchment of the Medjerda in Tunisia based on an observed rainfall dataset collected at 41 raingauges during the period 1973–2012. The standardized precipitation index and the aridity index were used to characterize drought variability. Multivariate and geostatistical techniques were further employed to identify the spatial variability of annual rainfall. The results show that the Medjerda is marked by a significant spatio-temporal variability of drought, with varying extreme wet and dry events. Four regions with distinct rainfall regimes are identified by utilizing the K-means cluster analysi. A principal component analysis identifies the variables that are responsible for the relationships between precipitation and drought variability. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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