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  • Water budget/balance x
  • Global Drought Information System - Drought Characterization, Occurrence, Driving Mechanisms, and Predictability Worldwide (GDIS Worldwide) x
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Omar V. Müller, Ernesto Hugo Berbery, Domingo Alcaraz-Segura, and Michael B. Ek

is computed with a simple water balance model using precipitation and temperature over land as input ( Fan and Van den Dool 2004 ). The CPC soil moisture is used here as an additional indicator of the observed drought, but not for model evaluation as values are highly dependent on model characteristics, preventing a direct comparison between models. Finally, the normalized difference vegetation index (NDVI) was used to identify ecosystem functional types to capture the seasonal and interannual

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Siegfried D. Schubert, Ronald E. Stewart, Hailan Wang, Mathew Barlow, Ernesto H. Berbery, Wenju Cai, Martin P. Hoerling, Krishna K. Kanikicharla, Randal D. Koster, Bradfield Lyon, Annarita Mariotti, Carlos R. Mechoso, Omar V. Müller, Belen Rodriguez-Fonseca, Richard Seager, Sonia I. Seneviratne, Lixia Zhang, and Tianjun Zhou

play a role in shaping the observed decadal variability, enhancing the large-scale influences. Della Marta et al. (2007) found a relationship between western Mediterranean heat waves and the AMO. On decadal time scales, the AMO and NAO explain over 60% of the observed area-averaged summer temperature and winter precipitation variability, respectively ( Mariotti and Dell’Aquila 2012 ). The Mediterranean region displays a robust drying trend in both precipitation and the land water balance since

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