Deposition fluxes of air pollutants to terrestrial surfaces in europe
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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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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 Final Event

March 18/19, 2003, Berlin


Eurotrac 2 priority areas

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


Policy relevance

European emissions,

deposition and

critical load

exceedances

Ecosystem protection

National targets and policy

Policy relevance

EUROTRAC-2 Final Event

March 18/19, 2003, Berlin


Monitoring and field experiments

Auchencorth

Speuld

Melpitz

Monitoring and field experiments

EUROTRAC-2 Final Event

March 18/19, 2003, Berlin


Understanding deposition and emission processes

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


Examples

Ammonia surface exchange

Co-deposition of SO2 and NH3

Particle fluxes

Examples

EUROTRAC-2 Final Event

March 18/19, 2003, Berlin


Application deposition modelling

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


Deposition modelling results sox in germany 1990 1999

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


Future needs

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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