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OH fields in KNMI, UiO & LSCE models P. Bousquet, Sophie Szopa, Isabelle Pison

OH fields in KNMI, UiO & LSCE models P. Bousquet, Sophie Szopa, Isabelle Pison M. Van Weele, S.B.Dalsoren, + other HYMN partners. Outline. OH on the vertical OH maps Zona l time series. HYMN, Paris meeting, 7-8 April 2008. Comparison set up.

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OH fields in KNMI, UiO & LSCE models P. Bousquet, Sophie Szopa, Isabelle Pison

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  1. OH fields in KNMI, UiO & LSCE models P. Bousquet, Sophie Szopa, Isabelle Pison M. Van Weele, S.B.Dalsoren, + other HYMN partners

  2. Outline • OH on the vertical • OH maps • Zona l time series HYMN, Paris meeting, 7-8 April 2008

  3. Comparison set up • Each group runs ~ the same emissions scenarios • Year 2004 • OH is interactive in each model • Daily outputs on the 3D matrix (monthly for UiO) • Vertical interpolation on 5 vertical layers • Horizontal grid change with mass conservation HYMN, Paris meeting, 7-8 April 2008

  4. Atmospheric chemistry modelling at LSCE Forward modelling Inverse modelling LMDZ-INCA Full model LMDZ-INCA GHG SACAS Simplified Atm. Chemistry Assim. System CHIMERE Regional model Traditional inversion Variational Inversion PYVAR HYMN, 1st annual meeting, Totnes October 22-24, 2007

  5. The general circulation model: LMDz-INCA • Standard horizontal res. 3.75x2.5 • Standard vertical resolution: 19 hybrid -p levels (surface to 35 km). • Dynamic: large scale advection of tracers: LMD climate model • Chemistry: standard version for tropospheric ozone calculation including NMHCs (90 species – 300 reactions); aerosols (mineral, sea-salt, BC, OC, sulfur) : INCA • Biogenic Emissions from the ORCHIDEE dynamical vegetation model • Anthropogenic emissions from either Edgar/IIASA/RETRO • Biomass burning from van der Werf 2006 Hauglustaine et al., JGR, 2004 CH4 ~ 9.5 years (tropo ~ 8.2 years) HYMN, 1st annual meeting, Totnes October 22-24, 2007

  6. OH on the vertical Ground LSCE KNMI Up 2.5 UiO January 2004 106 molec/cm3 0 HYMN, Paris meeting, 7-8 April 2008

  7. OH on the vertical- zonal means Ground KNMI LSCE Up 3.5 UiO July 2004 106 molec/cm3 0 HYMN, Paris meeting, 7-8 April 2008

  8. OH maps - 950 hPa - January 2004 5.5 KNMI LSCE 0 2.0 UiO KNMI-LSCE -2.5 106 molec/cm3 HYMN, Paris meeting, 7-8 April 2008

  9. OH maps - 950 hPa - July 2004 5.5 KNMI LSCE 0 2.0 UiO KNMI-LSCE -2.5 106 molec/cm3 HYMN, Paris meeting, 7-8 April 2008

  10. OH maps - 700 hPa - January 2004 5.5 KNMI LSCE 0 2.0 UiO KNMI-LSCE -2.5 106 molec/cm3 HYMN, Paris meeting, 7-8 April 2008

  11. OH maps - 700 hPa - July 2004 5.5 KNMI LSCE 0 2.0 UiO KNMI-LSCE -2.5 106 molec/cm3 HYMN, Paris meeting, 7-8 April 2008

  12. OH and synoptic variations LSCE 1st of January 2004 KNMI 106 molec/cm3 HYMN, Paris meeting, 7-8 April 2008

  13. OH time series - 950 & 850 hPa HYMN, Paris meeting, 7-8 April 2008

  14. OH time series - 700 & 500 hPa HYMN, Paris meeting, 7-8 April 2008

  15. OH time series - 200 hPa HYMN, Paris meeting, 7-8 April 2008

  16. OH time series - 950hPa - NH HYMN, Paris meeting, 7-8 April 2008

  17. OH time series - 950 hPa- SH HYMN, Paris meeting, 7-8 April 2008

  18. OH time series - 700 hPa - NH HYMN, Paris meeting, 7-8 April 2008

  19. OH time series - 700 hPa - SH HYMN, Paris meeting, 7-8 April 2008

  20. Some conclusions • Differences between OH fields at daily scale stay beyond ±10% at zonal scale (KNMI/LSCE) • Differences in troposphere max location between between the 3 models : LSCE ~ >900 hPa KNMI ~ 800 hPa UiO ~ 700 hPa • Phasing differences between LMDZ and (KNMI, UiO) due to northern hemisphere HYMN, Paris meeting, 7-8 April 2008

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