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Deposition Fluxes of Air Pollutants to Terrestrial Surfaces in Europe

Deposition Fluxes of Air Pollutants to Terrestrial Surfaces in Europe. Jan Willem Erisman (ECN), David Fowler, Mark Sutton, Eiko Nemitz, Kim Pilegaard , Martin Gallagher,Juha-Pekka Tuovinen, Jan Duyzer, Ludger Grünhage, Ulrich Dämmgen,Stanislav Cieslik. EUROTRAC-2 priority areas.

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Deposition Fluxes of Air Pollutants to Terrestrial Surfaces in Europe

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  1. Deposition Fluxes of Air Pollutants to Terrestrial Surfaces in Europe Jan Willem Erisman (ECN), David Fowler, Mark Sutton, Eiko Nemitz, Kim Pilegaard, Martin Gallagher,Juha-Pekka Tuovinen, Jan Duyzer, Ludger Grünhage, Ulrich Dämmgen,Stanislav Cieslik EUROTRAC-2 Final Event March 18/19, 2003, Berlin

  2. EUROTRAC-2 priority areas Tropospheric ozone and its control Tropospheric aerosols and clouds Deposition fluxes of Air pollutants Emission of gases and particles • Loss from the atmosphere: long-range transport, PM • Ecosystem inputs: acidification, eutrofication, ozonce exposure EUROTRAC-2 Final Event March 18/19, 2003, Berlin

  3. European emissions, deposition and critical load exceedances Ecosystem protection National targets and policy Policy relevance EUROTRAC-2 Final Event March 18/19, 2003, Berlin

  4. Auchencorth Speuld Melpitz Monitoring and field experiments EUROTRAC-2 Final Event March 18/19, 2003, Berlin

  5. c air concentration a atmospheric resistance ATMOSPHERE boundary canopy layer c compensation resistance CANOPY c point stomatal In-canopy c resistance resistance cuticular resistance G = [NH ]/[H ] + + c 4 stomatal s compensation point c soil l compensation point Understanding deposition and emission processes • Bi-directional nature of ammonia exchange • Co-deposition of SO2 and NH3 • In-canopy NOx processes • Ozone fluxes: stomatal and external leaf uptake • Modelling surface – atmosphere exchange EUROTRAC-2 Final Event March 18/19, 2003, Berlin

  6. Ammonia surface exchange Co-deposition of SO2 and NH3 Particle fluxes Examples EUROTRAC-2 Final Event March 18/19, 2003, Berlin

  7. 50x50 km hourly average concentration Sub-grid model - local emissions - detailed land use, complex terrain and surface roughness - meteorology - surface exchange modelling 5x5 km Application: deposition modelling EUROTRAC-2 Final Event March 18/19, 2003, Berlin

  8. 12 y = 1,06x + 1,89 10 2 R = 0,49 y = 1,07x + 2,09 2 R = 0,47 8 1997 1998 EDACS 6 Lineair (1998) Lineair (1997) 4 2 0 0 2 4 6 8 10 12 throughfall corrected for canopy exchange 8 7 y = 1,31x + 1,26 2 R = 0,54 y = 1,00x + 1,78 6 2 R = 0,39 5 1997 1998 EDACS 4 Lineair (1998) Lineair (1997) 3 2 1 0 0 1 2 3 4 5 6 7 8 throughfall corrected for canopy exchange Deposition modelling results: SOx in Germany 1990-1999 land use SOx, 1990 1999 EUROTRAC-2 Final Event March 18/19, 2003, Berlin

  9. Future needs • Dynamic surface – exchange modeling • Integral deposition/emission modeling • Policy evaluation: (dry) deposition network • Evaluating feedback mechanisms (global warming, ecosystem vitality, co-deposition, etc.) • Integrated approaches of C, H, O, P, N cycles and their interaction EUROTRAC-2 Final Event March 18/19, 2003, Berlin

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