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for clearance time of cloud on Wednesday and for any rain later in the week. Headline for Wednesday 27 Nov 2024: Early rain clearing east, then dry and bright with winds easing. Mountain weather hazards on Wednesday 27 Nov 2024 Blizzards Heavy persistent snow Storm force winds No Likelihood No Likelihood

How does hail form? Hail forms in thundercloud when drops of water are continuously taken up and down though the cloud by updraughts and downdraughts. When they go to the top of the cloud, it is very cold and they freeze. As the updraughts in thunderclouds are very big, they can keep

, anticyclonic-type weather. Low pressure or depression In a depression (also referred to as a ‘low’), air is rising. As it rises and cools, water vapour condenses to form clouds and perhaps precipitation. Consequently, the weather in a depression is often cloudy, wet and windy (with winds blowing

Kwinten is a research scientist at the Met Office working on large-scale cloud parametrizations.

Areas of expertise Cloud parametrization Cloud microphysics Radiative transfer in cloudy atmospheres Model evaluation Publications by Kwinten Current activities Kwinten is a visiting scientist within the Atmospheric Processes and Parametrizations team. Currently Kwinten investigates how to improve

cover several millions of square kilometres and extend vertically throughout the troposphere. High pressure (or anticyclone) In an anticyclone (also referred to as a 'high') the winds tend to be light and blow in a clockwise direction. Also the air is descending, which stops the formation of clouds

but perhaps a bit more persistent for a few hours around southern areas. Rain tending to die out and clear east soon after dawn breaks, cloudy at first but cloud thinning and breaking. Brighter in the afternoon with light winds and sunny spells, feeling cold with freezing level lowering to around 800m

Leader Pack     Observing the weather sessions, including videos: Session 1 - What is temperature? What is wind? Session 2 - What are clouds? Session 3 - Measuring the weather Session 1 - What is temperature? What is wind? What is temperature? In this part of the session, we will be discussing

with a planetary surface. m [YYYYMMDD]T[hhmm]Z-PT[nnnn]H[mm]M-boundary_layer_depth.nc Hourly (1-126) Instantaneous cloud amount below 1000ft ASL Fraction of horizontal grid square occupied by cloud below 1000 feet above sea level. 1 [YYYYMMDD]T[hhmm]Z-PT[nnnn]H[mm]M-cloud_ amount_below_1000ft_ASL.nc Hourly

Simon uses ground-based instruments to observe and better understand aerosol, cloud and radiation processes, so as to improve NWP forecast models.

Areas of expertise Aerosol microphysics; Radiative effects of aerosols; Cloud microphysics (boundary layer). Publications by Simon Current Activities  Simon carries out analysis and quality control on data gathered from ground-based instrumentation. This includes in-situ and remote sensing

with a planetary surface. m [YYYYMMDD]T[hhmm]Z-PT[nnnn]H[mm] M-boundary_layer_depth.nc Hourly (0-54) 3-hourly (51-120) Instantaneous cloud amount below 1000ft ASL Fraction of horizontal grid square occupied by cloud below 1000 feet above sea level. 1 [YYYYMMDD]T[hhmm]Z-PT[nnnn]H[mm] M