1. EMEP/MSC-W
How can EMEP Intensive measurement periods help to improve modelling of acidification, eutrophication, O3 and PM? Views from MSC-W
H. Fagerli and MSC-W team, TFMM, Paris 15-17th June 2009

2. Large uncertainty – dry deposition fluxes I
EMEP/MSC-W
Large uncertainty – dry deposition fluxes I
The EMEP model is evaluated using wet deposition measurements and concentrations in air, but to have the full budget we need to evaluate the dry deposition.
Too high dry deposition would imply too short long range transport: S-R matrices

3. Large uncertainty – dry deposition fluxes I
EMEP/MSC-W
Large uncertainty – dry deposition fluxes I
What is the reason for the underestimation?
Gas-particle distribution?
Dry deposition?
Vertical distribution of components? ?

4. Large uncertainty – dry deposition fluxes II
EMEP/MSC-W
Large uncertainty – dry deposition fluxes II
Co-ordination with other European projects (NEU?)?
Co-locate measurements of air concentrations to sites where flux measurements are undertaken? (CarboEurope, FluxNet?) Micro meteorology + concentrations would help to evaluate if dry deposition is reasonable

5. EMEP/MSC-W
Vertical profiles
To help interpreting processes (dynamic and chemistry)

6. Import into target regions as compared to domestic contributionNA EU SA EA ns
Credibility of model results?
Courtesy Michael Schulz

7. Spatial measurement data coverage
EMEP/MSC-W
Spatial measurement data coverage
Much less data for Mediterrenean and South-East Europe.
Could sites that only have partially coverage of the program have additional measurements during the measurement period?
Could countries/sites that not report to EMEP be involved for e.g. level 1 type measurements?

8. SOA and O3 BVOC difficult? Co-operation with other projects?
EMEP/MSC-W
SOA and O3
BVOC difficult? Co-operation with other projects?
Measurements of VOC, possibly co-located with OC/EC and tracers (levoglucosan, 14C) in a summer campaign? Isoprene, terpene ?
Products; HCHO, Methyl-vinyl ketone, machroein ?

9. PM Full chemical speciation (mass closure) Fine versus coarse nitrate
EMEP/MSC-W PM
Full chemical speciation (mass closure)
Dust
Fine versus coarse nitrate
Gas versus particle phase

10. What have we learned? NH3 HNO3 NO3- (PM25) Site: Auchencort (GB48)
Improving diurnal
variation of ammonia
emissions helps – but does not solve the problem
Site: Auchencort (GB48)
NO3- (PM25)

11. Coarse nitrate in standard EMEP model, june 2006
Dots: measurements
Field: EMEP model

12. New parametrisation of formation of coarse nitrate based (on dust and sea salt)
Montelibretti (IT01), june 2006

13. Wish list Dry deposition Vertical profiles VOC’s Spatial coverage
EMEP/MSC-W
Wish list
Dry deposition
Vertical profiles
VOC’s
Spatial coverage
Mass closure (chemical speciation)
Coarse versus fine nitrate
Gas-particle