2014
  • Non-ICIMOD publication

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Droughts in Pakistan; A Spatiotemporal Variability Analysis Using the Standardized Precipitation Index

  • Xie, H.
  • Ringler, C.
  • Zhu, T.
  • Waqas, A.
  • Summary

We investigated the spatiotemporal variability of drought incidence in Pakistan during 1960–2007 by calculating Standardized Precipitation Index fields for 3-, 6- and 12-month scales using gridded precipitation data. Principal component analysis revealed that droughts are wide-spread and often occur simultaneously over large areas. Furthermore, spectral analysis identified a 16-year drought recurrence period. Three such drought-intensive periods were identified: the late 1960s to early 1970s; the middle 1980s; and the late 1990s to early 2000s. Hence, drought patterns need to be integrated into long-term water planning as well as emergency preparedness.