Droughts in Pakistan: A spatiotemporal variability analysis using the standardized precipitation index
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Xie H, Ringler C, Zhu T, Waqas A. 2013. Droughts in Pakistan: A spatiotemporal variability analysis using the standardized precipitation index. Water International 38(5):620-631.
Permanent link to this item: http://hdl.handle.net/10568/52146
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.