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What is the jet stream and how does it affect our weather?

down the movement of weather systems and making their paths less predictable. These meanders can lead to prolonged periods of wet or dry weather, depending on where the jet stream is positioned. The jet stream can also intensify weather systems. When it flows over an area of low pressure, it can act

wales_-climate-met-office.pdf

and in the southernmost counties, where almost half the population lives. Wales has an essentially maritime climate, characterised by weather that is o en cloudy, wet and windy but mild. However, the shape of the coastline and the central spine of high ground from Snowdonia southwards to the Brecon Beacons introduce

Climate and climate change

Weather and Climate summaries

Overview of weather across the UK for previous months, seasons and years

Timing of summaries and statistics Those interested in climate change and predictions of future climates should also visit the Climate Change pages. UK last month December 2025 December was wet and warm as low pressure brought unsettled conditions and frontal systems across the country. The 8th

mena-climate-risk-report-appendix-final.pdf

varieties. Increased risk of harvest failure due to increasing risk from drought and extreme heat each year. Shortening of growing season for key crops (e.g. cereals and vegetables) planted in October/November and harvested between June and August. Off-season crops - typically summer vegetables - planted

wiser-mena-scoping-study-external-v2.pdf

the SSP5-RCP8.5 scenario (Gutiérrez et al., 2021; Figure 2). In general, decreases in precipitation and increases in temperature and evaporation are expected to intensify drought severity and duration over the region. Wet season rain storms are also projected to become more intense, as a warmer

gc-seamless-workshop-agenda.pdf

and WP-MIP Machine Learning Emulation of Climate Change Projections for Southeast Asia 12:00 Discussion groups 13:00 Group photo 13:05 Lunch + Poster Session 2&3 14:00 Plenary debrief Ron McTaggart- Cowan Chen Chen ECCC CCRS Session 2b: AI/ML models and integration with seamless physical model

gc-seamless-workshop-agenda-3.pdf

and WP-MIP Machine Learning Emulation of Climate Change Projections for Southeast Asia 12:00 Discussion groups 13:00 Group photo 13:05 Lunch + Poster Session 2&3 14:00 Plenary debrief Ron McTaggart- Cowan Chen Chen ECCC CCRS Session 2b: AI/ML models and integration with seamless physical model

Relative lack of Spring rainfall triggers water scarcity alert

to put it into context by casting our minds back to winter; a season traditionally regarded as a recharge period for the UK’s water supplies. UK rainfall over winter was down compared with average, with only 83% of average rainfall being recorded for the UK. This relative shortfall in a key period

west-africa-climate-risk-report-final.pdf

and rainfall, with the southerly coastal regions being cooler and wetter and the northern areas being hotter and drier as they get closer to the Sahel. Observations from 1981-2010 show a moderate increasing trend in temperature compared to other regions of the world, but as the region has a narrow climatic

Seasonal Climate Outlooks user guide

of a particular place is often described in seasonal periods (e.g. summer/ winter or rainy/ dry season) over the cycle of the year.   The climate can also naturally vary between different years due to the process of Earth system cycles, especially those associated with large circulations of the oceans

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