Peña-Angulo, D. Vicente-Serrano, S. M. Dominguez-Castro, F. Lorenzo-Lacruz, J. Murphy, C. Hannaford, J. Allan, R. P. Tramblay, Y. Reig-Gracia, F. El Kenawy, A. The Complex and Spatially Diverse Patterns of Hydrological Droughts Across Europe Water resour. res. 10.1029/2022WR031976 2022 2022