Evaluation of satellite precipitation products in the Medjerda catchment, East Algeria
(2018) EGU2018 — Location: Vienna, Austria (9.April.2018)
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- Abstract
- In many parts of the world, the observed hydrological alterations are the result of climate change. The increase in the frequency of floods as well as droughts is an indicative parameter. There is now a strong consensus that climate change presents a fundamental challenge for all regions of the world, with potential of being harshest on Mediterranean and semi-arid regions In this study, we investigate hydrological alteration based on several approaches. We propose to study hydrological alteration regimes based on a database already observed in Algeria (straemflow, precipitation, land use) and highlighting the explicative factors for these alterations that result. Here we use advanced methods of time series analysis, the application of advanced data mining tools (CCM / DFA) on the hydrometeorological database of the Tunisian-Algerian transboundary basin of Medjerda. This basin covers 23,600 km2 of which 7500 km2 are in Algeria, or 30% of the total area. We implement the 'Cross Convergent Mapping' method on data base, which will be applied and tested to evaluate alteration factors and to determine the variability and spatial pattern of hydrologic alterations. To apply these methods, it will be necessary to reconstruct a hydrometeorological variables (streamflow / rainfall) already available with a daily time step) and complete it with generic data. For these latest data, we used the new Google Earth Engine cloud-based platform from which we characterize time series of evaporation, temperature, NDVI.
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Citations
Kadir, M., Fehri, R., Delforge, D., Kadir, O., & Vanclooster, M. (2018). Evaluation of satellite precipitation products in the Medjerda catchment, East Algeria. Geophysical Research Abstracts, 20, EGU2018-18663. https://hdl.handle.net/2078.5/30596 (Original work published 2018)