slide1
Download
Skip this Video
Download Presentation
WP 312: Current chemical composition changes from different modes of transport

Loading in 2 Seconds...

play fullscreen
1 / 34

WP 312: Current chemical composition changes from different modes of transport - PowerPoint PPT Presentation


  • 359 Views
  • Uploaded on

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:

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'WP 312: Current chemical composition changes from different modes of transport' - libitha


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1
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
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
wp 312 current chemical composition changes from different modes of transport3
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 x x x x x x

OsloCTM2 x x x x x x

p-TOMCAT x x x x x x

LMDzINCA x x x x x x

E39C ab ab ab ab ab x

E5/M1 x b b b b x

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
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

comparison of models ozone base case column ozone perturbation linearity of approach
Comparison of models

- Ozone BASE case

- Column ozone perturbation

- Linearity of approach

WP 312: Current chemical composition changes
comparison of models column ozone perturbations du july 2003 all
Comparison of models: Column Ozone Perturbations (DU), July 2003, ALL

TM4

OsloCTM2

LMDzINCA

p-TOMCAT

E39C different scale !!!

WP 312: Current chemical composition changes

-similar patterns

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

wp 312 current chemical composition changes
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
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 (%) January July

wp 312 current chemical composition changes13
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
slide14
Ozone perturbations (ppbv), by case, 1000 - 800 hPa

January ROAD July

January SHIP July

January AIRCRAFT July

slide15
Ozone perturbations (ppbv), by case, 250 hPa

January ROAD July

January SHIP July

January AIRCRAFT July

slide16
Ozone perturbations (ppbv), by case, zonal mean

January ROAD July

January SHIP July

January AIRCRAFT July

ozone perturbations du from different means of transport
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

slide18
Ozone perturbations (ppbv), by case, 1000 - 800 hPa

January ROAD July

January SHIP July

January AIRCRAFT July

slide19
Ozone perturbations from different means of transport in the boundary layer (< 800 hPa) by region as a function of timeWP 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

slide20
Ozone perturbations from different means of transport in the boundary layer (< 800 hPa) by region as a function of timeWP 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

slide21
Ozone perturbations from different means of transport in the UTLS (250 hPa) by region as a function of timeWP 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

slide22
OH-perturbation (104molec/cm3), by case, 1000-800 hPa

January ROAD July

January SHIP July

January AIRCRAFT July

slide23
OH perturbations (104 molec/cm3), by case, zonal mean

January ROAD July

January SHIP July

January AIRCRAFT July

wp 312 current chemical composition changes from different modes of transport24
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
slide26
CO perturbations (ppbv), by case, zonal mean

January ROAD July

January SHIP July

January AIRCRAFT July

slide27
Ozone perturbations from different means of transport in the boundary layer (< 800 hPa) in polluted areas and 30°E downwindWP 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

slide28
Ozone perturbations from different means of transport in the UTLS (250 hPa) by region as a function of timeWP 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

slide33
Ozone perturbations from different means of transport in the boundary layer (< 800 hPa) by latitude as a function of timeWP 312: Current chemical composition changes from different modes of transport

Tropics: 10S - 30N

Mid latitudes: 30N - 60N

Arctic: 60N - 90N

other tracers oh co
Other tracers:

- OH

- CO

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

ad