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

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

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


European emissions,

deposition and

critical load

exceedances

Ecosystem protection

National targets and policy

Policy relevance

EUROTRAC-2 Final Event

March 18/19, 2003, Berlin


Auchencorth

Speuld

Melpitz

Monitoring and field experiments

EUROTRAC-2 Final Event

March 18/19, 2003, Berlin


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


Ammonia surface exchange

Co-deposition of SO2 and NH3

Particle fluxes

Examples

EUROTRAC-2 Final Event

March 18/19, 2003, Berlin


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


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

  • 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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