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E.Meijer, P.van Velthoven M.Gauss, I.S.A.Isaksen O.Dessens V.Grewe D.Caro, D.Hauglustaine P.Hoor, P.Jöckel, J.Lelieveld. WP 312: Current chemical composition changes from different modes of transport. Idea:

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WP 312: Current chemical composition changes from different modes of transport

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E.Meijer, P.van Velthoven

M.Gauss, I.S.A.Isaksen

O.Dessens

V.Grewe

D.Caro, D.Hauglustaine

P.Hoor, P.Jöckel, J.Lelieveld

WP 312: Current chemical composition changes from different modes of transport


Idea:

QUANTIFY the effect of different means of transport on the current state of the atmosphere

Setup:

1. Take a number of models (six)

2. same initialization, emissions etc … as far as possible

3. simulate current conditions (2003) (BASE)

4. sensitivity runs to investigate the effect of

ROAD SHIP AIR ALL (ROAD + SHIP + AIR)

-5% -5% -5% - 5% each

4. later upscaling to 100%

WP 312: Current chemical composition changes from different modes of transport


Status:

- Monthly mean output perturbation fields for 2003 available on server in Oslo (x,a)

- Draft of Report and under revision within AC312 (general

assembly)

- Timepos files produced for model/obsevation comparison

BASE ROAD SHIP AIR ALL TIMEPOS

TM4 xx x xxx

OsloCTM2 x x x x x x

p-TOMCAT xx x x xx

LMDzINCA x x x xxx

E39C abab ab ababx

E5/M1 xb b bbx

a) alternative data provided (tagged ozone, different emissions used)

b) problems due to nudging and coupling, perturbation fields discarded,

available on request

WP 312: Current chemical composition changes from different modes of transport


Emissions:

WP 312: Current chemical composition changes from different modes of transport

Brackets: Annual values from POET based on June

June values provided by M. Gauss


NOx-Emissions: Annual mean NO-flux

WP 312: Current chemical composition changes from different modes of transport

ROAD SHIP

AIRCRAFT NON-TRAFFIC + SOIL


CO-Emissions: Annual mean CO-flux

WP 312: Current chemical composition changes from different modes of transport

ROAD SHIP

NON-TRAFFIC BIOGENIC


Comparison of models

- Ozone BASE case

- Column ozone perturbation

- Linearity of approach

WP 312: Current chemical composition changes


Comparison of models: Ozone BASE case (ppbv), July 2003, 1050-800 hPa

TM4

OsloCTM2

LMDzINCA

p-TOMCAT

ECHAM5/MESSy

E39C

WP 312: Current chemical composition changes


Comparison of models: Ozone BASE case (ppbv), July 2003, zonal mean

WP 312: Current chemical composition changes

TM4

OsloCTM2

LMDzINCA

p-TOMCAT

ECHAM5/MESSy

E39C


Comparison of models: Column Ozone Perturbations (DU), July 2003, ALL

TM4

OsloCTM2

LMDzINCA

p-TOMCAT

E39Cdifferent scale !!!

WP 312: Current chemical composition changes

-similar patterns

-absolute numbers vary among CTM's (minima from 3.5 – 5.5 DU)


0

-1

-2

-3

-4

-5

-6

0

-1

-2

-3

-4

-5

-6

January

July

15

10

5

0

15

10

5

0

January

July

Mean column ozone perturbation (DU) derived from all CTM’s

WP 312: Current chemical composition changes

Relative standard deviation (%)


Linearity: Column Ozone Perturbations (DU):

SUM(perturbations) – Perturbation (ALL emissions)

2

1

0

-1

-2

2

1

0

-1

-2

Linearity of approach achieved (~1%)

WP 312: Current chemical composition changes

January

Sum of individual

O3-perturbations (DU)

ROAD+SHIP+AIR

O3-perturbation (DU)

from ALL emissions reduced

all CTM's

rel. difference (%) JanuaryJuly


Effect of different means of transportation

- January / July

- PBL (1000 – 800 hPa)

- UTLS (250 hPa)

- seasonal cycles

- regional differences

WP 312: Current chemical composition changes


Ozone perturbations (ppbv), by case, 1000 - 800 hPa

January ROAD July

January SHIP July

January AIRCRAFT July


Ozone perturbations (ppbv), by case, 250 hPa

January ROAD July

January SHIP July

January AIRCRAFT July


Ozone perturbations (ppbv), by case, zonal mean

January ROAD July

January SHIP July

January AIRCRAFT July


Ozone perturbations (DU) from different means of transport

WP 312: Current chemical composition changes from different modes of transport

Tropics: 10S - 30N

Mid latitudes:30N - 60N

Arctic:60N - 90N

1000 – 600 hPa

ROAD

SHIP

600 – 100 hPa

% relative to total column: dashed: PBL, solid: UTLS


Ozone perturbations (ppbv), by case, 1000 - 800 hPa

January ROAD July

January SHIP July

January AIRCRAFT July


Ozone perturbations from different means of transport in the boundary layer (< 800 hPa) by region as a function of time

WP 312: Current chemical composition changes from different modes of transport

East Asia: 100E - 120E , 30N-50N

Central Europe: 10W - 10 E , 40N-60N

Eastern US: 90W - 70 W , 30N-50N


Ozone perturbations from different means of transport in the boundary layer (< 800 hPa) by region as a function of time

WP 312: Current chemical composition changes from different modes of transport

East Asia: 100E - 120E , 30N-50N

Central Europe: 10W - 10 E , 40N-60N

Eastern US: 90W - 70 W , 30N-50N

dashed: example for regional variability of CTM's


Ozone perturbations from different means of transport in the UTLS (250 hPa) by region as a function of time

WP 312: Current chemical composition changes from different modes of transport

East Asia: 100E - 120E , 30N-50N

Central Europe: 10W - 10 E , 40N-60N

Eastern US: 90W - 70 W , 30N-50N


OH-perturbation (104molec/cm3), by case, 1000-800 hPa

January ROAD July

January SHIP July

January AIRCRAFT July


OH perturbations (104 molec/cm3), by case, zonal mean

January ROAD July

January SHIP July

January AIRCRAFT July


Summary:

- Models agree by 15 % calculating the summed effect of traffic emissions on total ozone

- Linear approach successful

- Mean maxiumum total column reduction of ozone:

3.5 DU (Jan) – 4.5 DU (July)

- discrepancies between models: 3.5 DU – 5.5 DU (July)

- PBL:- road emissions: Largest regional effect of on ozone

central Europe, Eastern US, summer

- ship emissions: dominating ozone perturbation over the central eastern Atlantic, weaker seasonal cycle

- 250 hPa: road emissions during NH-summer ~ 50% of aircraft effect

ship emissions of importance in the tropics

impact of road+ship ~aircraft

WP 312: Current chemical composition changes from different modes of transport


THANK YOU !

WP 312: Current chemical composition changes from different modes of transport


CO perturbations (ppbv), by case, zonal mean

January ROAD July

January SHIP July

January AIRCRAFT July


Ozone perturbations from different means of transport in the boundary layer (< 800 hPa) in polluted areas and 30°E downwind

WP 312: Current chemical composition changes from different modes of transport

East Asia: 100E - 120E , 30N-50N

Central Europe: 10W - 10 E , 40N-60N dashed: 30E downwind

Eastern US: 90W - 70 W , 30N-50N


Ozone perturbations from different means of transport in the UTLS (250 hPa) by region as a function of time

WP 312: Current chemical composition changes from different modes of transport

East Asia: 100E - 120E , 30N-50N

Central Europe: 10W - 10 E , 40N-60N

Eastern US: 90W - 70 W , 30N-50N


Zonal mean ozone perturbations (ppbv), January

WP 312: Current chemical composition changes

ROADSHIP

AIRCRAFTALL


Zonal mean ozone perturbations (ppbv), July

WP 312: Current chemical composition changes

ROADSHIP

AIRCRAFTALL


Emissions:

WP 312: Current chemical composition changes from different modes of transport


Emissions:

WP 312: Current chemical composition changes from different modes of transport


Ozone perturbations from different means of transport in the boundary layer (< 800 hPa) by latitude as a function of time

WP 312: Current chemical composition changes from different modes of transport

Tropics: 10S - 30N

Mid latitudes:30N - 60N

Arctic:60N - 90N


Other tracers:

- OH

- CO

WP 312: Current chemical composition changes from different modes of transport


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