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Briefing note Severe or extreme weather in a changing climate We know our climate is changing. Sea levels are rising, air temperatures are going up, ice cover on land and sea is decreasing and rainfall patterns are changing. Scientists are studying all of these, and making projections

average levels. The best of the sunshine will be found in western areas, although cloud is expected to become increasingly broken, allowing some sunshine to reach most regions. A few light showers are possible at times in the Northern Isles, eastern Scotland, and later along North Sea coastal areas

and animals in response to the weather and climate.” The National Oceanography Centre (NOC) contributed to the sea-level section of this report. The NOC’s Director, Professor Edward Hill, said: “Sea-level around the UK is expected to continue to rise due to an increased rate of ice loss from the Greenland

The latest measurements released by the Scripps Institution of Oceanography, UC San Diego  show that the atmospheric CO2 concentrations at Mauna Loa Observatory, Hawaii, are now at record levels. The average for March 2021 was 417.14 parts per million (ppm), which is 50% higher than the average

temperature of around 2.5°C - 3°C above pre-industrial levels by the end of the 21st century. This scenario is also known as RCP4.5. The high emissions scenario represents considerable future increases in global greenhouse gas emissions resulting in a rise in global average temperature of 4°C

average levels. The best of the sunshine will be found in western areas, although cloud is expected to become increasingly broken, allowing some sunshine to reach most regions. A few light showers are possible at times in the Northern Isles, eastern Scotland, and later along North Sea coastal areas

A new study has examined how high-impact weather in the UK, such as extremely hot days, heavy rainfall and very cold conditions, could be affected at different levels of global warming.

The study, published in the journal Climatic Change, found that the higher the level of global warming, the projected increase in frequency or severity or both will be stronger for hot weather, droughts and flooding in the UK. These high-impact weather events can cause significant disruption across

CSV NETCDF Planning sea defences Offshore operations Marine consultancy World Area Forecast System (WAFS) data for aviation 36 hours ahead 6-hourly Worldwide Wind Temperature Humidity at various flight levels Significant weather hazards (icing, turbulence, CB, volcanic ash) GRIB BUFR PNG Flight

In 2021, carbon dioxide in the atmosphere will reach levels 50% higher than before the industrial revolution, due to human-caused emissions, says a Met Office forecast. 

The Met Office predicts that annual average CO2 concentration at Mauna Loa Observatory, Hawaii, will be 2.29 ± 0.55 parts per million (ppm) higher in 2021 than in 2020. This rise is driven by emissions from fossil fuel burning and deforestation, but will be slightly smaller than usual due