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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

at 10m above the ground • Atmospheric pressure at the station level and reduced to mean sea level • Pressure tendency and characteristic • Visibility • Amount of cloud • Type of cloud identified by observer • Height of cloud base • Present and past weather • Duration of sunshine • Short wave solar

School of Earth and Environment INSTITUTE FOR CLIMATE & ATMOSPHERIC SCIENCE A new approach to quantifying aerosol-cloud radiative effect through process-based constraints on climate model parameters Kunal Ghosh Lea Provost, Leighton Regayre and Ken Carslaw (ICAS, University of Leeds), Jill S

) and a sharp or rumbling sound (thunder). Thunderstorms are associated with convective clouds and are most often, but not necessarily, accompanied by precipitation at the ground. Cumulonimbus clouds (Latin: cumulus – heap; nimbus – rainy cloud) Heavy and dense cloud, of considerable vertical extent

, though the far north can expect a scattering of showers. Later in the day, cloud will increase across western Scotland and the Northern Isles, bringing occasional rain or drizzle. Winds will be a notable feature in the north, with gusty conditions especially to the lee of hills, while the south

current weather or environmental situations - for example, images of cloud-top height, fog coverage or ash clouds from a recent volcanic eruption. The image data can also be processed to form data-sets suitable for climate applications - for example, historical sea-surface temperature analyses

Office Aberdeen Confidence: High confidence through the period and for a change to more wintry conditions from Thursday. Headline for Monday 29 Dec 2025: Mainly dry with variable cloud cover Mountain weather hazards on Monday 29 Dec 2025 Blizzards Heavy persistent snow Storm force winds

Thursday will bring largely settled conditions across the UK, with high pressure continuing to exert its influence. Most areas will remain dry, with the best of the sunshine expected in western regions. Elsewhere, cloud cover will gradually break up through the day, allowing sunny intervals

Areas of expertise Satellite imagery. Radiative transfer. Clouds and radiation.  Publications by Pete Current activities The work of Pete aims to enhance the use of existing and new satellite radiance observations in the weather forecasting process, via the development of value-added products from

or drizzle over the Midlands in the morning, and cloud increasing generally, with isolated showers in the north-west, and more general rain spreading into northern parts around evening. The 4th was generally cloudy but less cold, with rain affecting all parts except the far north, this rain clearing