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Jonathan works on cloud microphysics modelling, with the specific interest of lightning parametrization and the forecasting of lightning activity.

Areas of expertise Cloud Microphysics Lightning and atmospheric electricity Ground-based and spaceborne radar and lidar Cloud-aerosol interactions Numerical modelling and parametrization development Publications by Jonathan Current activities Jonathan is a senior scientist working in the fields

released into the air throughout the continent. GULFEX At the end of the first Gulf War, retreating Iraqi troops set hundreds of Kuwaiti oil fires alight, creating a massive cloud of smoke which at times blocked out the sun over Kuwait. Fears of this cloud of smoke spreading and having worldwide impacts

by Met Office Aberdeen Confidence: High through to Saturday. Low for details of any heavier rain and winds on Sunday, and timing of colder conditions arriving later Sunday. Headline for Thursday 28 Nov 2024: Cold dry bright morning. Low cloud, strong winds and rain later in the day. Mountain weather

of the Great Lakes. The ensuing warming of the atmosphere at low levels causes de-stabilisation, producing rising air parcels. These in turn develop into narrow bands of convective cloud, oriented along the wind flow, that can rapidly deposit large amounts of snow downwind. The above images show data from

The representation of solar and infra-red radiation, and its interaction with clouds in our numerical models.

Various radiative processes occur in the atmosphere: gases, aerosols, cloud droplets and ice crystals absorb radiation and emit thermal radiation. Aerosols, cloud particles and air molecules scatter radiation. The surface absorbs, reflects and emits radiation. The radiative properties

particles, such as sulphate from industrial sulphur dioxide emissions; smoke from burning of agricultural waste, and pollution particles from traffic emissions. These atmospheric particles scatter and absorb sunlight and terrestrial radiation and also act as cloud condensation nuclei and modify

Dr Keith Williams Keith is the Head of Atmospheric Processes and Parametrizations and conducts research into process-orientated model evaluation. Dr Paul Barrett Paul leads research into the representation of clouds and radiation Dr Martin Best Martin manages the research undertaken on land surface

% of average. 1st to 7th Central and northern parts saw mist, fog and frost on the 1st, the fog slow to clear in some spots, especially in the east, but southern and north-western counties became sunny. The north-west began the 2nd clear and frosty, but low cloud, mist and fog affected most other places

a 'temperate climate' which means winters are, overall, mild and summers, generally, don't get too hot. Clouds Clouds are made of lots tiny drops of water that float in the air. Clouds can be white, grey or dark grey. The darker a cloud, the more water it is carrying, and the more likely

Charlie specializes in modelling the dispersion of volcanic eruption clouds using the Met Office's Numerical Atmospheric-dispersion Modelling Environment (NAME).

Areas of Expertise Volcanic cloud transport and dispersion   Current Activities Charlie is working in the Volcanic and Chemical Dispersion team of the Atmospheric Dispersion and Air Quality (ADAQ) group within Weather Science. Charlie is currently working on the development of resuspended volcanic