1. Case study lead concentration & deposition in the Netherlands
Eric van der Swaluw,
Benno Jimmink,
Bert Leekstra,
Addo van Pul (RIVM)
Ilia Ilyin (MSC-E)
8 May TFMM Zagreb

2. Outline
measurements modelling
8 May TFMM Zagreb

3. Motivation: Assessment of lead concentration and deposition in the
Netherlands
Analysis of how well monitoring is able to represent the
lead concentration and deposition in the Netherlands
8 May TFMM Zagreb

4. Measurements in the Netherlands
Since 2008 measurements have been performed in configuration:
AIR
PRECIPITATION
8 May TFMM Zagreb

5. Measurements in the Netherlands
Since reduction took place due to budget-cuts :
AIR
PRECIPITATION
8 May TFMM Zagreb

6. Quality of air measurements
Leckel - PM10
Frequency: every other day
Operational since
Correction factor of for lead measurements before 2008
Hafkenscheid et al. (2010)
8 May TFMM Zagreb

7. Quality of precipitation data
Wet-only samplers
Eigenbrodt NSA 181 KHT
Operational since
Current sampling frequency is on weekly basis
8 May TFMM Zagreb

8. Emissions in the Netherlands 1
Source:
Lead emissions from the grid of emission registration are transformed (indicated by the blue arrow) to the EMEP grid
Standard
Pb emissions for 2007
EMEP Grid (50x50)
8 May TFMM Zagreb

9. Emissions in the Netherlands 2
Lead emissions from the grid of emission registration are transformed (indicated by the blue arrow) to the high resolution EMEP grid
Case study
EMEP Grid (5x5)
8 May TFMM Zagreb

10. Result for the averaged concentration of lead
8 May TFMM Zagreb

11. Result for the averaged concentration of lead
Industrial
source Pb
8 May TFMM Zagreb

12. A comparison of concentration of lead
8 May TFMM Zagreb

13. A comparison of concentration of lead
8 May TFMM Zagreb

14. A comparison of concentration of lead
8 May TFMM Zagreb

15. A comparison of wet deposition lead
8 May TFMM Zagreb

16. A comparison of wet deposition lead
8 May TFMM Zagreb

17. Conclusions so far …
Large-scale gradient SW – NE in concentration and deposition
Large-scale gradient “picked up” with measurements of concentration
Peak values as observed in the simulation results clearly not “picked up” by measurements
8 May TFMM Zagreb

18. Prospects Simulation runs for 2007-2009 Comparison with measurements
Special focus on peak concentration in the Netherlands (2009)
Analyze year-to-year variation due to meteo effects
Other heavy metals (Hg & Cd)
Analysis of critical loads
8 May TFMM Zagreb