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who adopt a more conservative approach. Unlike the SQI more than one category threshold is used by the GSS (see table 1). The Met Office assess all the TAF cloud base and visibility categories defined by ICAO. At the time of writing, the following categories are used for TAF assessment: Surface

Areas of expertise Frances' areas of expertise include: Atmospheric Dispersion Modelling Volcanic Clouds Pulling science through to services Application to Emergency Response Publications by Frances Beckett Current activities Frances is the scientific manager of the Volcanic and Chemical team

Areas of Expertise Fluid Dynamics Mathematical Modelling Cloud Physics Current Activities  Frankie’s current ongoing work involves running single column models, as well as high-resolution simulations over multiple domains across the globe where there are observations, particularly focussing

-hours • 6-hour intervals for forecasts valid from 54- hours through 120 hours. Note: Grid point forecasts of turbulence, icing, and cumulonimbus clouds will be provided through 48-hours. Current WAFS grid point forecasts have a temporal resolution of 3-hour intervals from 6-hours through 36-hours

north. Any local mist or fog soon cleared on the 6th, then it was fine but with cloud increasing from the west, and rain reached the north by late morning, spreading south and east into the Midlands during the afternoon, and parts of the south-west and East Anglia by evening. The 7th was brightest

an overall figure of 118%. 1st to 8th Showers developed widely through the morning of the 1st away from the south-west, dying away during the afternoon, leaving just a few over the north-west by evening. The 2nd started fine, cloud increasing in many places from late morning with showers developing

Nina is a scientist working with modelling the dispersion of volcanic eruption clouds using the Met Office's atmospheric dispersion model NAME.

Areas of expertise Nina has been working with Lagrangian Particle Dispersion Models and inversion modelling since 2008 with a main focus on forecasting volcanic eruption clouds. Her key areas of expertise include: dispersion modelling (FLEXPART and NAME) inverse modelling   volcanic eruption clouds

Areas of expertise Satellite imagery. Volcanic cloud detection and retrieval. Current activities Cameron's work aims to enhance the use of existing and new satellite radiance observations to improve the tracking of hazardous volcanic clouds. Volcanic clouds are hazardous to aircraft and satellites

Areas of Expertise Satellite imagery. Volcanic cloud detection and retrieval. Current Activities Mike's work aims to enhance the use of existing and new satellite radiance observations to improve the tracking of hazardous volcanic clouds. Volcanic clouds are hazardous to aircraft and satellites

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