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of the wet season. Present-day simulations of the RCM ensemble are more similar to each other than those of the driving GCM ensemble which indicates that their climatologies are influenced significantly by the RCM formulation and less so by their driving GCMs. Consistent with this, the spread and magnitudes

neither quite as warm nor quite as wet as the previous autumn 2022. The three months of the autumn saw dramatic contrasts in the weather. Settled weather in early September brought many warm, dry, sunny days with a significant late-season heatwave. 30°C was reached on seven consecutive days (a September

but cold far in the northwest (2) Note: Very wet in the south, normal elsewhere (3) Note: Wet in parts of the north, normal* elsewhere * Region usually experiences less than 10mm/month rainfall during the month (dry season). Climate Outlook Global: December to September Current Status 11 Current

to trigger public health warnings. Here we a seeing a 16-fold increase! 14 Working together on UK Climate Projections Projecting future seasons using the Local (2.2km) The Local (2.2km) ensemble suggests: Summer Summers will drier by 16- 46% and winters will be wetter by 16-42%. Winter Projected

in detail beyond about a week ahead, it is possible indicate whether conditions over a season are likely to be wetter, drier, warmer or cooler compared to a long-term average (e.g. warmer than normal). The graphic below shows you can formulate statements of above and below normal for a hypothetical month

, wetter winters and hotter drier summers, which will influence the release of pollen into the atmosphere. Yolanda added: “We’re already seeing an impact on the pollen season as a result of climate change. Some species are having longer seasons, some are starting earlier and some are more severe. We’re

Forecast of July- August-September 2022 season rainfall in the Sahel and other regions of tropical North Africa: Updated forecast 1 FORECAST OF JULY-AUGUST-SEPTEMBER 2022 SEASON RAINFALL IN THE SAHEL AND OTHER REGIONS OF TROPICAL NORTH AFRICA: UPDATED FORECAST Andrew Colman Met Office Hadley Centre

Forecast of July- August-September 2022 season rainfall in the Sahel and other regions of tropical North Africa: Preliminary forecast 1 FORECAST OF JULY-AUGUST-SEPTEMBER 2022 SEASON RAINFALL IN THE SAHEL AND OTHER REGIONS OF TROPICAL NORTH AFRICA: PRELIMINARY FORECAST Andrew Colman Met Office

7.4 Information on early/late season Sahel rains 7.5 Rainfall versus Drought Predictability 8. Summary: Gaps and Potential Opportunities Supported by: Fund Manager: 1. Introduction: Aims and Scope This report is a literature review on the topic of seasonal-decadal prediction of Sahel rainfall

-month, but eastern areas were drier. Total rainfall amounts for the season have been unexceptional, mostly within 25% of average. Sunshine has also shown a contrast, being rather more than normal in September, but well below average for most areas during October, then broadly closer to normal