1. IACETH Institute for Atmospheric and Climate Science Representation of Middle Range Energy Electrons in the Chemistry-Climate Model SOCOL Pavle Arsenovic * Andrea Stenke *, Eugene Rozanov *,**, Thomas Peter * * Institute for Atmospheric and Climate Science, ETH Zürich ** PMOD/WRC, Davos ISSI Meeting, January 2015 1

2. IACETH Institute for Atmospheric and Climate Science Outline Types of energetic particles Model framework Middle range energy electrons AIMOS Ionization rates Solar wind data Flow speed and dynamic pressure Z component of IMF Correlation between Ionization rates and solar wind Outlook 2

3. IACETH Institute for Atmospheric and Climate Science Energetic particles Galactic cosmic rays (up to 5x10 13 MeV) Solar protons (up to 500 MeV) 3 Low energy electrons (<30 keV) Middle energy electrons (30- 300 keV) High energy electrons (300 keV to 10 MeV) Turunen et al., 2008

4. IACETH Institute for Atmospheric and Climate Science Model framework SOCOL3-MPIOM 4 GCR SPE LEE MEE HEE

5. IACETH Institute for Atmospheric and Climate Science Middle range energy electrons Energy 30-300 keV Originate from outer radiation belt Produce HOx and NOx between 60 and 80 km HOx and NOx deplete ozone 5

6. IACETH Institute for Atmospheric and Climate Science Data used for linking Ionization rates from Atmosphere Ionization Module Osnabrück (AIMOS) Satellite solar wind data:  Flow speed  Dynamic pressure  Z component of IMF 6

7. IACETH Institute for Atmospheric and Climate Science 7 AIMOS Ionization Rates Vertical resolution – 8 levels between 60 and 80 km Horizontal resolution – 96x48 Time resolution – from 2004 to 2010, 2 hourly

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12. IACETH Institute for Atmospheric and Climate Science 12 AIMOS Ionization Rate

13. IACETH Institute for Atmospheric and Climate Science 13 Solar Wind Data Solar wind flow speed (v) Solar wind dynamic pressure (p) p = c N p V p 2 Z component of interplanetary magnetic field (Bz) Time resolution – from 2004 to 2010, 5 minutes

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17. IACETH Institute for Atmospheric and Climate Science 17 Bz of interplanetary magnetic field

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20. IACETH Institute for Atmospheric and Climate Science Outlook Correlation between AIMOS Ionization rates and solar wind data is low for 2-hourly and daily data Yearly data correlation shows much higher correlation (~0.9) Time lag between the peaks in v, bz and ionization rates? Current state: Including AIMOS ionization rates (daily) in SOCOL and compare results with runs with no MEE (in progress) 20