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Figure
JRC: Sciene for Disaster Risk Management 2017, doi:10.2788/842809, Figure 3.35. A drought event is defined as a continuous period of at least two months in whicht the SPI-3 is below -1 (see Spinoni et al. 2017, doi:10.1016/j.gloplacha.2016.11.013).Trends are expressed in number of events per decade squared. For example, a trend of +1 means that a location will experience each decade, on average, one drought event more than in the previous decad.
For references, please go to https://www.eea.europa.eu/data-and-maps/figures/trend-in-the-frequency-of or scan the QR code.
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