Raziei, Tayeb; Martins, Diogo; Bordi, Isabella; Santos, … - In: Water Resources Management 29 (2015) 2, pp. 487-504
Regional drought modes in Portugal are identified applying the Principal Component Analysis (PCA) and Varimax rotation to the Standardized Precipitation Index (SPI) computed on various time scales using the three precipitation datasets covering the period 1950–2003: (i) The observation dataset...