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Anomaly PED, 2013/14–2015/16
Ministry for the EnvironmentPotential evapotranspiration deficit (PED) can be thought of as a drought index. It is the difference between how much water could potentially be lost from the soil through evapotranspiration and how much is actually available. When PED is high, plants do not have the full amount of water available they need for growth. As our climate changes, increasing...Created 2 February 2020 • Updated 3 March 2025