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Pinatubo eruption (orange).    The carbon dioxide concentration also varies during the year due to uptake by ecosystems in the northern hemisphere spring and summer growing season and a release as vegetation dies back in autumn and winter.  This seasonal cycle is forecast to peak at 412.2 ± 0.6 ppm in May

Forecast for June to November 2019 Issued 21 May 2019 The most likely number of named tropical storms (winds of at least 39 mph) predicted to occur in the North Atlantic during the June to November period is 13, with a 70% chance that the number will be in the range 9 to 17. The 1981-2010 long-term

Forecast for June to November 2020 Issued 20 May 2020 The most likely number of named tropical storms (winds of at least 39 mph) predicted to occur in the North Atlantic during the June to November period is 13, with a 70% chance that the number will be in the range 9 to 17. The 1981-2010 long-term

show? Recent research has put forward conflicting evidence to show carbon budgets may be either larger or smaller than previously thought. For example, one 2017 paper 2 updates carbon budgets based on recent global temperature observations and suggests that warming in our climate may be less sensitive

. Uncertainty in September sea ice extent is still very high at this point in the season. Antarctic sea ice extent remains exceptionally low and has been record low by a very wide margin since late May. Extent is very low across the whole Southern Ocean except for the Amundsen Sea where it is slightly higher

outlets for its economic activities. 4.2. When delivering non-economic activities, the Met Office's standard approach (consistent with HM Treasury Guidance) is to price such activity based upon full cost recovery plus a real charge for the cost of capital and may include an agreed efficiency target

concluded that these systems are vulnerable to space weather. Navigational safety becomes reliant on the ability of the ship’s crew to identify that GNSS may not be accurate and utilise traditional navigation aids and radar instead. The e-LORAN system was unaffected by the GNSS jamming. Low level space

, Northern Ireland, northern England, and possibly north Wales. Some of these showers may be heavy and thundery, though they will gradually ease and clear from the west through the afternoon. Further south, conditions will be much calmer, with dry and fine weather dominating. Temperatures will be slightly

. Using climate model projections • Together with observations, projections can be used as one source of information when planning for the future or as a communication tool. • When planning for the future, you may wish to carry out a climate change risk assessment. This needs to takes into account

to Met Office website • COP26 may pose risks to delivery for some work, particularly for the communications team. Issues will be highlighted if they arise. • Met Office customer survey has been launched – members were asked to complete this. Action: Members of PWSCG to complete the MO Customer