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warnings UK Storm Centre Seasonal advice Maps & charts Maps & charts UK forecast UK weather map Cloud cover map Precipitation map Lightning map Rainfall map Temperature map Wind map Wind gust map Surface pressure charts All countries Climate Climate Climate explained What is climate change? Causes

warnings UK Storm Centre Seasonal advice Maps & charts Maps & charts UK forecast UK weather map Cloud cover map Precipitation map Lightning map Rainfall map Temperature map Wind map Wind gust map Surface pressure charts All countries Climate Climate Climate explained What is climate change? Causes

is characterised by equability, a consequence of the moderating effects of the Atlantic Ocean - bringing relatively mild winters and cool summers. However, the indented shape of the coastline and the presence of high ground introduce localised differences in temperature, cloud and precipitation. Temperature

/m 3 • Forecast vertical range covers FL000 to FL600 • Data in IWXXM format QVA data will be issued for “significant eruptions” For a volcanic ash cloud to be deemed significant, and so prompting the provision of QVA, a VAAC will consider the following points (subject to VAAC assessment and workload

warnings UK Storm Centre Seasonal advice Maps & charts Maps & charts UK forecast UK weather map Cloud cover map Precipitation map Lightning map Rainfall map Temperature map Wind map Wind gust map Surface pressure charts All countries Climate Climate Climate explained What is climate change? Causes

warnings UK Storm Centre Seasonal advice Maps & charts Maps & charts UK forecast UK weather map Cloud cover map Precipitation map Lightning map Rainfall map Temperature map Wind map Wind gust map Surface pressure charts All countries Climate Climate Climate explained What is climate change? Causes

Volcanic Ash – 1500 UTC annotated satellite image Issued 1530 UTC on Tue 11 Apr 2017 LOW CONFIDENCE Ash plume is not clearly discernible around Grimsvotn due to cloud obstruction, but IMO ground based radar observations report ash plume to 15km. © Crown copyright Met Office Volcanic Ash – T+0

warnings UK Storm Centre Seasonal advice Maps & charts Maps & charts UK forecast UK weather map Cloud cover map Precipitation map Lightning map Rainfall map Temperature map Wind map Wind gust map Surface pressure charts All countries Climate Climate Climate explained What is climate change? Causes

COMBINED WEATHER-CLIMATE MODEL DEVELOPMENT PROJECTS • Southern Ocean Clouds and Climate (M Ahlgrimm, M Köhler, WA Müller) � Fundamental surface climate bias in the SO, e.g.T2m � Associated with SW radiation bias and related surface fluxes, and deep mixed layer >4000m resulting warming and freshening

warnings UK Storm Centre Seasonal advice Maps & charts Maps & charts UK forecast UK weather map Cloud cover map Precipitation map Lightning map Rainfall map Temperature map Wind map Wind gust map Surface pressure charts All countries Climate Climate Climate explained What is climate change? Causes