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Relationship of Weather Types on the Seasonal and Spatial Variability of Rainfall, Runoff, and Sediment Yield in the Western Mediterranean Basin

D. Pena-Angulo 1 E. Nadal-Romero 1 J.C. González-Hidalgo J. Albaladejo 2 V. Andreu 3 H. Bahri 4 S. Bernal 5 M. Biddoccu R. Bienes 6 J. Campo 3 M.A. Campo-Bescós A. Canatario-Duarte 7 Y. Canton 8 J. Casali 9 V. Castillo 10 E. Cavallo A. Cerda 11 P. Cid 12 N. Cortesi 13 G. Desir 14 E. Diaz-Pereira 10 T. Espigares 15 J. Estrany 16 J. Farguell M. Fernandez-Raga 17 C.S. Ferreira V. Ferro 18 F. Gallart 19 R. Gimenez 9 E. Gimeno 3 J.A. Gómez A. Gomez-Gutierrez 20 H. Gomez-Macpherson 21 O. Gonzalez-Pelayo 22 O. Kairis 23 G.P. Karatzas S. Keesstra 24 S. Klotz 25 C. Kosmas 23 N. Lana-Renault 26 T. Lasanta 27 J. Latron 28 R. Lazaro 29 Yves Le Bissonnais 30 C. Le Bouteiller 25 F. Licciardello 31 J.A. López-Tarazón A. Lucia 32 V.M. Marín-Moreno C. Marin 33 M.J. Marques 34 J. Martinez-Fernandez 35 M. Martinez-Mena 10 L. Mateos 21 N. Mathys 25 Luis Merino-Martín 36, 37 M. Moreno-de las Heras 28 N. Moustakas 23 J.M. Nicolau V. Pampalone 38 Damien Raclot 39 M.L. Rodríguez-Blanco J. Rodrigo-Comino 40 A. Romero-Diaz 41 J.D. Ruiz-Sinoga J.L. Rubio S. Schnabel 20 J.M. Senciales-González A. Sole-Benet 29 E.V. Taguas M.T. Taboada-Castro 42 M.M. Taboada-Castro 42 F. Todisco 43 X. Ubeda 44 E.A. Varouchakis L. Wittenberg 45 A. Zabaleta 46 M. Zorn 47
33 IMAPEC - Instrumentation, Material and Correlated Electrons Physics
PHELIQS - PHotonique, ELectronique et Ingénierie QuantiqueS : DRF/IRIG/PHELIQS
Abstract : Rainfall is the key factor to understand soil erosion processes, mechanisms, and rates. Most research was conducted to determine rainfall characteristics and their relationship with soil erosion (erosivity) but there is little information about how atmospheric patterns control soil losses, and this is important to enable sustainable environmental planning and risk prevention. We investigated the temporal and spatial variability of the relationships of rainfall, runoff, and sediment yield with atmospheric patterns (weather types, WTs) in the western Mediterranean basin. For this purpose, we analyzed a large database of rainfall events collected between 1985 and 2015 in 46 experimental plots and catchments with the aim to: (i) evaluate seasonal differences in the contribution of rainfall, runoff, and sediment yield produced by the WTs; and (ii) to analyze the seasonal efficiency of the different WTs (relation frequency and magnitude) related to rainfall, runoff, and sediment yield. The results indicate two different temporal patterns: the first weather type exhibits (during the cold period: autumn and winter) westerly flows that produce the highest rainfall, runoff, and sediment yield values throughout the territory; the second weather type exhibits easterly flows that predominate during the warm period (spring and summer) and it is located on the Mediterranean coast of the Iberian Peninsula. However, the cyclonic situations present high frequency throughout the whole year with a large influence extended around the western Mediterranean basin. Contrary, the anticyclonic situations, despite of its high frequency, do not contribute significantly to the total rainfall, runoff, and sediment (showing the lowest efficiency) because of atmospheric stability that currently characterize this atmospheric pattern. Our approach helps to better understand the relationship of WTs on the seasonal and spatial variability of rainfall, runoff and sediment yield with a regional scale based on the large dataset and number of soil erosion experimental stations
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D. Pena-Angulo, E. Nadal-Romero, J.C. González-Hidalgo, J. Albaladejo, V. Andreu, et al.. Relationship of Weather Types on the Seasonal and Spatial Variability of Rainfall, Runoff, and Sediment Yield in the Western Mediterranean Basin. Atmosphere, MDPI 2020, 11 (6), pp.609. ⟨10.3390/atmos11060609⟩. ⟨hal-02893421⟩



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