Measuring meteorological droughts on the basis of rainfall data.



There is little, if anything, that can be done to alter the occurrence of droughts. However, it is important that scientists try to understand and communicate the probability of drought events of various levels of intensity and duration. The World Meteorological Organization (WMO) has adopted the Standardized Precipitation Index (SPI) as a global standard to measure meteorological droughts on the basis of rainfall data.

The Integrated Drought Management Programme (IDMP), co-sponsored by the WMO and the Global Partnership Water (GWP), have developed a three pillar approach to Integrated Drought Management. These pillars include: drought monitoring and early warning; drought vulnerability and impact assessment; and drought mitigation, preparedness and response. IDMP developed the National Drought Management Policy Guidelines, which include a 10-step process to assist countries in developing national drought plans and policies (WMO and GWP, 2014).



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