- Extreme dry and wet spells face changes in their duration and timing

Extreme dry and wet spell analysis across Europe. (a), (b) Duration of extreme dry (wet) spells. (c), (d) Changes in the duration of extreme dry (wet) spells as percentage change per decade with reference to the duration in 1958. (e), (f) Average within-year timing of extreme dry (wet) spells in the period 1958–2017. (g), (h) Changes in the within-year timing of extreme dry (wet) spells as days per decade with reference to the timing in 1958. Results of (c), (d), (g) and (h) are shown as means across hexagons. Black dots represent the rain gauges examined with locally significant (green) and field significant (magenta) sites.