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fraction 12. surface (skin) temperature Un-split File 2 [yyyymmddhhmm_u1096_ng_umqv_Wholesale2.grib] Full domain, all available time steps and the following surface level parameters: 1. low cloud amount 2. medium cloud amount 3. high cloud amount 4. convective cloud base height 5. convective cloud top

In the atmosphere, we can see liquid water droplets in clouds and we can also see ice crystals as clouds too, but these are usually much higher up. What is the water cycle? The water cycle is the process by which water is continuously transferred between the surface of the earth and the atmosphere

on the 2nd, but showers became more frequent in the north-east from early afternoon. Cloud, mist and fog with light rain spread across the south and parts of the Midlands on the 3rd, with sunshine and showers in the north, the showers turning thundery over the Pennines at times. High pressure then built

. Wind direction is given in degrees true 8000 ‘Eight kilometres’ 9999 = 10 km or more; 0000 = less than 50 metres 7 Significant weather -SHRA ‘Light rain showers’ See present weather table on METAR (page 18) for details; NSW = No significant weather 8 Cloud FEW005 SCT010 SCT018CB BKN025 9 Significant

Dr Justin Langridge Justin is in charge of observational research for improving the representation of physical processes in weather forecasting and climate prediction models. Dr Steven Abel Steven manages the Cloud Physics and Aerosol group, working on observational and numerical modelling studies

Haloes Haloes require ice crystals to form - either from high cirrus cloud of free falling crystals. Typically sunlight or moonlight is reflected by ice crystals producing a white halo. However, if the light rays strike the light at a particular angle, some light may be refracted

of sunshine at Whitby (North Yorkshire). Most places started fine on the 2nd, but showers spread from the south-west, initially with isolated thunderstorms, reaching central and northwestern parts by early evening, while low cloud off the North Sea affected north-eastern parts at times. The 3rd

weather forecasts. Movie loops of images taken from geostationary satellites give a graphic impression of the movement of clouds. Viewed in the visible part of the spectrum, as the human eye would see from space, the shadows cast by the sunlight provide a three dimensional feel to the clouds

Autumn leaves Cloud and rain Lightning Sandcastle Snow on window Snow person Sun Sun and cloud Sun, cloud and rain Sunshade Tropical island Winter scene Rainbow Rainbow, paint by numbers

are associated with cumulonimbus clouds. These clouds allow for deep and vigorous convection (vertical motion) and the temperature of the top of the cumulonimbus cloud must be colder than -20°C. A cumulonimbus cloud is shown on the left. Cumulonimbus clouds generally have an anvil shaped top with the top