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Intercomparison Study of Numerical Models for Long-Range Atmospheric Transport of Mercury

Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003. Intercomparison Study of Numerical Models for Long-Range Atmospheric Transport of Mercury Alexey Ryaboshapko, Richard Artz, Russell Bullock,

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Intercomparison Study of Numerical Models for Long-Range Atmospheric Transport of Mercury

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  1. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 Intercomparison Study of Numerical Models for Long-Range Atmospheric Transport of Mercury Alexey Ryaboshapko, Richard Artz, Russell Bullock, Jesper Christensen, Mark Cohen, Ashu Dastoor, Didier Davignon, Roland Draxler, Ralf Ebinghaus, Ilia Ilyin, John Munthe, Gerhard Petersen, Dimiter Syrakov EMEP/MSC-E

  2. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 Four stages of the intercomparison Stage I. Comparison of chemical modules for mercury transformations in a water droplet (completed) (article published in Atmospheric Environment, 36, pp. 3881–3898, 2002) Stage II. Comparison of the modeling results with observations during short episodes Stage III. Comparison of the modeling results with observations for the whole 1997 Stage IV. Comparison of items of atmospheric budgets of for the EMEP domain and for some selected countries (UK, Poland and Italy) EMEP/MSC-E

  3. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 Models participating in the 2nd stage (comparison of shout episodes) EMEP/MSC-E

  4. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 Measurements • Summer episode: • June - July, 2 weeks, 1995 • Winter episode: • November, 2 weeks, 1999 • Measured Hg forms: • Total Gaseous Mercury (TGM) continuously • Total Particulate Mercury (TPM) several hours sampling • Reactive Gaseous Mercury (RGM) several hours sampling EMEP/MSC-E

  5. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 Results TGM concentrations at Neuglobsow station, summer episode (HYSPLIT model) Map of Hg emissions EMEP/MSC-E

  6. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 TGM concentrations at Aspvreten station, summer episode (CMAQ model) Map of Hg emissions EMEP/MSC-E

  7. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 TGM averages for all participated models Neuglobsou,1995 EMEP/MSC-E

  8. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 TGM averages for all participated models Aspvreten,1995 EMEP/MSC-E

  9. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 MSC-E results for Neuglobsow, 1999 TPM RGM EMEP/MSC-E

  10. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 RGM averages for all participated models Neuglobsou,1999 EMEP/MSC-E

  11. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 TPM averages for all participated models Neuglobsou,1999 EMEP/MSC-E

  12. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 MSC-E results for Mace Head RGM TPM EMEP/MSC-E

  13. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 Analysis of air mass trajectories Back trajectory for 12:00, November 04, 1999 EMEP/MSC-E

  14. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 Back trajectory for 12:00, November 04, 1999 EMEP/MSC-E

  15. Task Force on Measurements and Modelling, Valencia, Spain, 9-11 April 2003 • Conclusions • The models well (within factor of 2) reproduced TPM concentrations • Models reproduced mean levels of TGM, but peaks were mainly underestimated • Current knowledge on RGM should be improved • MSCE_Hg model demonstrates good comparability with advanced scientific mercury transport models • Further stages of the intercomparison study are devoted to simulation of transboundary transport for the whole year EMEP/MSC-E

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