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of the wet season in semiarid tropical climates of western Africa. Int J Climatol 21:1251– 1262 Sijikumar S, Roucou P, Fontaine B (2006) Monsoon onset over Sudan- Sahel: simulation by the regional scale model MM5. Geophys Res Lett 33: L03814. doi:10.1029/2005GL024819 Sivakumar MVK (1988) Predicting

to less frequent, more extreme rainfall and therefore the seasonal mean may decrease while daily extreme values may stay similar to the baseline or increase. • See UKCP Probabilistic Extremes report and factsheet for more details. • Widespread wet bias in Europe and UK region in winter. Biases vary

maximum temperature maps - calendar view 9. Daily minimum temperature maps - calendar view 10. Daily rainfall maps - calendar view 11. Monthly atmospheric circulation 12. Weather diary 13. Notes UK overview April continued the theme of the previous few months, being unsettled, wet and dull. The April

maximum temperature maps - calendar view 9. Daily minimum temperature maps - calendar view 10. Daily rainfall maps - calendar view 11. Monthly atmospheric circulation 12. Weather diary 13. Notes UK overview April continued the theme of the previous few months, being unsettled, wet and dull. The April

in percentages. The outlook uses 3 categories, linked to previous observed UK conditions, for possible UK temperature, precipitation and wind speed in the coming season: COLD, NEAR AVERAGE and MILD for temperature WET, NEAR AVERAGE and DRY for precipitation CALM, NEAR AVERAGE and WINDY for wind speed

in all areas across the UK. We can also see that whilst some areas have become drier, more areas have become wetter. IMPACTS Cities and towns across the UK are already experiencing the impacts of climate change. The negative impacts of climate change for urban areas may include: HEAT Increased energy

) and rainfall (right) from 1991-2020 compared to a baseline period of 1961-1990. We can see that temperatures have risen in all areas across the UK. We can also see that whilst some areas have become drier, more areas have become wetter. IMPACTS Cities and towns across the UK are already experiencing

(left) and rainfall (right) from 1991-2020 compared to a baseline period of 1961-1990. We can see that temperatures have risen in all areas across the UK. We can also see that whilst some areas have become drier, more areas have become wetter. IMPACTS Cities and towns across the UK are already

that is being li ed and cooled below its dew point. Rainfall tends to be associated with Atlantic depressions or with convection. The Atlantic Lows are more vigorous in autumn and winter and bring most of the rain that falls in these seasons. In summer, convection caused by solar surface heating sometimes forms

areas have become drier, more areas have become wetter. IMPACTS Cities and towns across the UK are already experiencing the impacts of climate change. The negative impacts of climate change for urban areas may include: HEAT Increased energy demand for summer cooling SEA LEVEL RISE Increased risk