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Bae-146 ADIENT flight summaries, publication goals and future plans

Bae-146 ADIENT flight summaries, publication goals and future plans. Hugh Coe, Ellie Highwood, Gavin McMeeking, William Morgan and Megan Northway. Overview. Where/when we flew Data status/summary Publication goals High pressure characterisation Black carbon and mixing state

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Bae-146 ADIENT flight summaries, publication goals and future plans

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  1. Bae-146 ADIENT flight summaries, publication goals and future plans Hugh Coe, Ellie Highwood, Gavin McMeeking, William Morgan and Megan Northway

  2. Overview • Where/when we flew • Data status/summary • Publication goals • High pressure characterisation • Black carbon and mixing state • Organics composition • Nitrate and its influences • Optical properties • Radiation case study • June flying plans

  3. 13 December 2007 18 December 2007

  4. 19 December 2007 2 April 2008

  5. 16 April 2007 10 May 2008

  6. 18 September 2008 19 September 2008

  7. 23 September 2008 24 September 2008

  8. 23 September 2008

  9. Mean scattering coefficient (550 nm) for all low-level (<3000 feet) periods DEC 07 Radiation flight(Ireland) Baltic SEP 08 APR 08 High pressure system

  10. Bae-146 data status/summary (http://personalpages.manchester.ac.uk/staff/gavin.mcmeeking/datastatussummary.html) Instrument performance good, data in final form Instrument performance good, data require processing Instrument performance questionable Instrument performance poor or installed Data status table

  11. Paper 1: Characterisation of aerosol properties during the high pressure period of EUCAARI-LONGREX • Lead: Thomas Hamburger (DLR) • Summary: Describe meteorological conditions and aerosol physical properties during the high pressure system dominant 5-14 May (EUCAARI-LONGREX) • Combine PCASP, SMPS, CPC and OPC (sizing) data from the BAe-146 and the DLR Falcon

  12. Sources of aerosol sizing information on the -146. 600 600 Example of re-processed SMPS data (B366). “fixed” AIM “fixed” AIM

  13. Paper 2: Measurements of black carbon and its mixing state over northern Europe • Lead: Gavin McMeeking (Manchester) • Summary: Describe spatial and temporal distributions of black carbon measured by the SP-2 during ADIENT and EUCAARI-LONGREX. • Also examine extent of black carbon mixing state (coating thickness, number of coated particles) in the near-field and far-field regimes. • Status: Need final, re-processed SP-2 data (issues related to flow at high altitudes)

  14. Single particle soot photometer Schwarz et al. [2006], JGR

  15. Incandescence channel: Measure of BC mass loading (and volume equivalent diameter if density is assumed). Result: BC size distributions and mass/number concentrations (limited size range). Scattering channel: Measure of aerosol size and coating thickness (for particles with BC core). Result: “Scattering aerosol” size distribution and mass/number concentrations. Coating thickness!

  16. Examples spatial distribution

  17. Example of similar analysis From Schwarz et al. [2008], GRL

  18. Ratio of SP-2 scatter volume / neph scattering during EUCAARI

  19. Clear altitude dependence (B366)

  20. ADIENT June 2009 flying period

  21. ADIENT June 2009 flying period • 26 May – 2 July 2009 • ~50 hours • Operating in conjunction with: • VISURB: 12-15 hours • APPRAISE Clouds: 20 hours • Cirrus project: 15 hours • Have requested weekend flying, double crews to maximize flying in the window

  22. General approach • Flexibility: “Fly the best mission for the conditions” • Round Britain (e.g., B406) • Coastal work in easterly or westerly conditions • M-25 special case study • Suitcase opportunities: short overnights to find clear sky conditions suitable for radiation flights

  23. M-25 case study • Work in tandem with a vehicle-based lidar moving (or not) along the M-25 (J. Haywood, MetOffice)

  24. Important additions/changes to aircraft payload • Retrofitted PCASP (better flow monitoring and channel resolution/electronics) • Mini-lidar (?) • Upgraded SMPS software (built in flow and pressure corrections, real-time access during flights) • Upgraded cTOF-AMS software (Fast-MS mode) • SP-2 flow control fixed • More/better calibrations

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