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College London, Holmbury St. Mary, Dorking Surrey RH5 6NT L5 Consortium Meeting, London 11th - 14th May, 2015 Plan • Operational needs and measurement requirements • Key challenges • Brief overview of the state of the art • Instruments and techniques currently under development L5 Consortium Meeting

L5 Consortium, London, May 2015 Solar Energetic Particles: Operational needs and L5 R.D. Bentley. UCL-MSSL L5 Consortium, London, May 2015 Why are we interested in energetic particles? • Effect: High energy (>10 MeV) protons alter the ionosphere and increase absorption of HF communication

Helioseismology and Thoughts About a Magnetic and Doppler Imager Instrument Jesper Schou Max Planck Institute for Solar System Research [email protected] L5 Meeting, London, May 12, 2015 Page 1 of 15 Overview • A bit of helioseismology • Requirements – Helioseismology – Instrument • Instrument

the safeguarding areas: 200000 .000000 SOUTH OXFORDSHIRE DISTRICT SOUTH OXFORDSHIRE DISTRICT CHILTERN DISTRICT D WATFORD DISTRICT HERTSMERE DISTRICT ENFIELD LONDON BORO 200000 .000000 3. The appropriate office for the purpose of the consultation is Met Office Safeguarding, Met Office, Observations

apply in these VAAC London QVA Terms “Affiliate” shall mean each and any subsidiary or holding company of the Customer and each and any subsidiary of a holding company of the Customer (and the expressions “holding company” and “subsidiary” shall be construed in accordance with s 1261(1) of Companies

Early February 2009 snowfalls February 2 - Heavy snowfalls in eastern England, with significant travel disruption in London and the south-east. There were heavy snowfalls in many parts of eastern England overnight 1st/2nd, with widespread travel disruption. London and parts of Essex, Kent, Surrey

Observatory (London) 36.3 Station record was broken on 10 August 2003, see table below. Wisley (Surrey) 36.1 Station record was broken on 10 August 2003, see table below. Kew Royal Botanic Gardens Station record was broken on 10 August 2003, see table 36.1 (London) below. Cambridge Guildhall Station

Southern England: climate This describes the main features of the climate of Southern England from Kent westwards to Wiltshire and Dorset Much of the eastern half of this area is densely populated, as it includes Greater London and centres of population such as Reading, Slough, Southampton

Quantitative Volcanic Ash Webinar © Crown Copyright 2025, Met Office Volcanic Ash Advisory Centres (VAACs) www.metoffice.gov.uk © Crown Copyright 2017, Met Office Volcanic Ash Forecasts At present, ICAO mandated Volcanic Ash forecasts are: Volcanic Ash Forecasts • Since 2010 VAAC London and VAAC

London VAAC Quantitative Volcanic Ash charts Quantitative Volcanic Ash charts (QVA) are produced in accordance with International Civil Aviation Organization (ICAO) Annex 3 requirements and are provided as well as the London Volcanic Ash Advisory Graphics (VAG) and Advisories (VAA). The lowest QVA