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Real-Time Measurements during the EMEP Intensive Measurement Period and Application of EMEP4UK

This presentation discusses the importance of real-time measurements in capturing diurnal variations in aerosol composition and inorganic gases. It also explores the application of EMEP4UK in capturing mesoscale transport phenomena and provides insights into the contrast between local controls and transport across Europe.

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Real-Time Measurements during the EMEP Intensive Measurement Period and Application of EMEP4UK

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  1. Real-Time Measurements during the EMEP Intensive Measurement Period and Application of EMEP4UK Massimo Vieno, Eiko Nemitz CEH Edinburgh & Univ. Edinburgh

  2. Daily aerosol composition  Wenche Aerosol physics (size spectra)  Jean-Phillippe ? Real-time measurements of aerosol composition & inorganic gases (hourly or better)  This presentation Intensive Measurement Campaigns (June ’06 & Jan ‘07)

  3. Daily measurements capture mesoscale transport phenomena But: hourly measurements are needed to capture diurnal variations due to: Changes in emissions Changes in boundary layer height Changes in (T & RH-dependent) gas / aerosol equilibria Why make real-time measurements?

  4. Aerosol Mass Spectrometer vs. wet chemistry instruments

  5. Example Time Series UK 40 (continuous sampling at Auchencorth Moss UK Supersite)

  6. Cabauw (NL11) Auchencorth (GB40) Mace Head (IE31) Harwell (GB36) Ispra (IT04) Network of 2006/07 Real-time Measurements

  7. Meteorology during 2006/07:Example Back-trajectories • Jan 07 was an unusually mild winter month • Sites better connected in Jan-07 than in Jun-06 19 June 2006 17 Jan 2007

  8. Measured time-series: June 2006

  9. Averaged Diurnal Cycles:Summer Nitrate Cabauw (NL) Payerne (CH) Auchencorth (UK) Ispra (IT)

  10. Averaged Diurnal Cycles:Summer Ammonia Auchencorth (UK) Harwell (UK) Ispra (IT) Cabauw (NL)

  11. Averaged Diurnal Cycles:Summer nitric acid & hydrochloric acid

  12. Coarse vs. Fine Mode NO3- • Harwell (June 2006): 49% fine : 51 % coarse • Harwell (Jan 2007): 61% fine : 39 % coarse

  13. Study transport across Europe Contrast local controls (e.g. NO3-): transport vs. emissions vs. thermodynamics Integrate with daily measurements (at more sites) Provide dataset for validation of atmospheric transport models at European and national scale Data usage

  14. EMEP Campaign 2008: 15 Sep - 17 Oct 2008 EMEP Campaign 2009: 23 Feb – 27 Mar 2009 Timing of Next Campaigns

  15. Improved coverage in Easter and Southern Europe Link to aerosol physics from EUCAARI (size distributions, air ions, hygroscopicity) Aerosol climatology based on Aerosol Mass Spectrometry (Synchronized) database for OM analysis (e.g. POA vs. SOA) Improved gas phase measurements (HNO3 & HNO3) Improved EC/OC (EUCAARI methodology) Improved mass closure (incl. water, OC/OM, mineral dust) 14C & Levoglucosane Objectives & Challenges for 2008/09 Campaigns

  16. AMS Size Distribution at CEH EMEP (UK 36)

  17. AMS Aerosol Climatology (not synchronised)

  18. Map of Likely Sites of AMS Measurements during 2008/09 EMEP Campaigns

  19. Funding sources: National governments EUSAAR (provision of site infrastructure): www.eusaar.net European ACCENT/BIAFLUX IP (trans-national travel funds for 2008 campaign): www.accent-network.org; applications to kjf@ceh.ac.uk ESF INTROP Combine with other project commitments Organisation: Eiko Nemitz (en@ceh.ac.uk) Andre Prevot (EUCAARI) (andre.prevot@psi.ch) Wenche Aas (EMEP, NILU, Norway) (waa@nilu.no ) Funding

  20. CEH Edinburgh, UK Gavin Phillips, Rick Thomas, Chiara Di Marco, Eiko Nemitz IFT Leipzig, Germany Laurent Poulain PSI Switzerland Rami Alfarra, Andre Prevot University of Kopio, FI Jukka Rukkainen, Ari Laaksonen ECN Petten, Netherlands Rene Otjes JRC Ispra, Italy Jean-Phillippe Putaud Groups involved in 2006/07

  21. Model comparison EMEP4UK 2.44 – WRF 2.2 nested within EMEP 2.44 Europe –WRF 2.2

  22. Auchencorth SO4 June 2006 (hourly) 25 EMEP4UK (Auch) 20 MARGA (Auch) AMS (Bush) 15 concentration / ug m-3 10 5 0 01/06/2006 06/06/2006 11/06/2006 16/06/2006 21/06/2006 26/06/2006 time / hours EMEP4UKAuchencorth

  23. EMEP4UKHarwell

  24. EMEP4UKMace Head

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