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Wednesday morning will begin with locally heavy rain moving southeast across parts of England and Wales, accompanied by an area of showers pushing southeast. By mid-morning, the rain will clear the far southeast, leaving behind variable cloud cover and scattered showers. Temperatures will be around

Cyril leads a team improving the way that clouds and radiation are represented in weather forecasts and climate simulations.

Areas of expertise Cloud parametrization Initiation of atmospheric convection Slantwise convection and conditional symmetric instability Publications by Cyril Current activities Cyril is a science manager within the Atmospheric Processes and Parametrizations team. He leads the Clouds and Radiation

Top level summary of PS43 PS43 introduces atmospheric physics upgrades to both the global and regional NWP models. In the global model there are changes to improve boundary-layer processes, the representation of cloud, radiation, warm rain microphysics, and deep convection, whilst in the regional

. 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 in an anticlockwise direction around the depression). There are usually frontal systems associated with depressions. Figure

models. • However there are a number of differences between global (GAL) and regional (RAL) configurations, most notably: Scheme GAL RAL Convection parametrization On Off Cloud fraction PC2 (Wilson et al., 2008) Bi-modal (Van Weverberg et al., 2021) Cloud microphysics Wilson and Ballard (1999) CASIM

temperatures are expected to reach between 27°C and 29°C quite widely, with some locations in southern England potentially peaking at 30°C or 31°C. Further north, conditions will remain largely dry and warm, although there will be more cloud, particularly along North Sea coasts. A few isolated showers

weather and cloud from automated systems should be treated with caution due to the limitations of the sensors themselves and the spatial area sampled by the sensors. 2 Wind Wind direction/speed 31015G27KT 'three one zero degrees, fifteen knots, max twenty seven knots' Max only given if >= 10KT greater

radiation signature emitted by the atmosphere or surface. It uses the fact that the radiation reaching the satellite will vary from wavelength to wavelength depending upon the temperature structure of the intervening atmosphere and the presence of any absorbing gases and clouds. The method

the key feedback mechanisms relevant to improved simulations of present-day climate and climate change. Key aims Improve our understanding of the physical basis for cloud and water vapour feedbacks. Improve the representation of clouds, water vapour and the Earth's radiation budget in the Met Office

Aerosols, clouds and climate feedbacks in the Southern Ocean Highlights from New Zealand’s Deep South National Science Challenge Catherine Hardacre Laura Revell, Olaf Morgenstern, Yusuf Bhatti, Nick Edkins, Felix Goddard, Cameron McErlich, Abhi Venugopal, and Jonny Williams Seamless Modelling