EVERGREEN WP 4200: model intercomparison on transport and chemistry
description
Transcript of EVERGREEN WP 4200: model intercomparison on transport and chemistry
![Page 1: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/1.jpg)
TM meeting, KNMI, 12 November 2003
EVERGREEN WP 4200: model intercomparison on transport and chemistry
Peter Bergamaschi (JRC IES)
Jan Fokke Meirink (KNMI)
Stefan Körner / Martin Heimann (MPI)
Jean Francois Muller (BIRA IASB)
![Page 2: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/2.jpg)
TM meeting, KNMI, 12 November 2003
EVERGREEN WP4200 – overview
• 222Rn• SF6
• OH (full chemistry runs)• calibration of OH fields• single-tracer forwards runs for CH4 (CO, and CO2?)
![Page 3: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/3.jpg)
TM meeting, KNMI, 12 November 2003
EVERGREEN WP4200 – atmospheric transport / chemistry models
TM3 (KNMI) TM3 (MPI) IMAGES
(BIRA-IASB) MOZART (UPMC)
TM5 (JRC)
horizontal resolution
3 x 2 5 x 3.8 5 x 5 6 x 4 (global) 1 x 1 (zoom over Europe)
vertical layers 25 hybrid (surface - 0.0 hPa)
19 hybrid (surface - 0.0 hPa)
25 sigma (surface - 50 hPa)
25 hybrid (surface - 0.0 hPa)
advection slopes scheme [Russel & Lerner, 1981]
slopes scheme [Russel and Lerner, 1981]
Semi-Lagrangian (2nd order) [Smolarkiewicz and Rasch, 1991]
slopes scheme [Russel and Lerner, 1981]
vertical diffusion PBL: [Holtslag and Boville, 1993] FT: [Louis et al., 1982]
Louis, 1979 PBL: [Muller and Brasseur, 1995]
PBL: [Holtslag and Boville, 1993] FT: [Louis et al., 1982]
convective cumulus clouds
Tiedke, 1989 Tiedke, 1989 [Muller and Brasseur, 1995] [Costen et al., 1988]
Tiedke, 1989
meteorology ECMWF ECMWF / NCEP ECMF (climatological) ECMWF
chemistry - offline - CBM4 based chem
- offline - chem (?)
- offline - IMAGES-chemistry
- offline - CBM4 based chem
NCEP
![Page 4: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/4.jpg)
TM meeting, KNMI, 12 November 2003
EVERGREEN WP4200 – 222Rn protocol
• constant surface emissions of 1 atom cm-2 s-1 between -60o S and 60o N
• constant surface emissions of 0.5 atom cm-2 s-1 between 60o N and 70o N (except Greenland)
• no temporal variation
![Page 5: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/5.jpg)
TM meeting, KNMI, 12 November 2003
222Rn surface June
![Page 6: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/6.jpg)
TM meeting, KNMI, 12 November 2003
222Rn 750hPa June
![Page 7: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/7.jpg)
TM meeting, KNMI, 12 November 2003
222Rn 500hPa June
![Page 8: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/8.jpg)
TM meeting, KNMI, 12 November 2003
222Rn 250hPa June
![Page 9: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/9.jpg)
TM meeting, KNMI, 12 November 2003
222Rn latitude vs. altitude June
![Page 10: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/10.jpg)
TM meeting, KNMI, 12 November 2003
222Rn latitude vs. altitude December
![Page 11: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/11.jpg)
TM meeting, KNMI, 12 November 2003
222Rn Freiburg
![Page 12: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/12.jpg)
TM meeting, KNMI, 12 November 2003
222Rn Schauinsland
![Page 13: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/13.jpg)
TM meeting, KNMI, 12 November 2003
222Rn Mauna Loa
![Page 14: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/14.jpg)
TM meeting, KNMI, 12 November 2003
EVERGREEN WP4200 – SF6 protocol
• simulation 1994-2001
• emissions EDGAR V3.2 SF6 inventory for 1995 (atmospheric increase 1994-2001
approximately linear)
• initial field 1994 from MPI (TRANSCOM)
![Page 15: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/15.jpg)
TM meeting, KNMI, 12 November 2003
SF6 surface June 2001
![Page 16: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/16.jpg)
TM meeting, KNMI, 12 November 2003
SF6 latitude vs. altitude June 2001
![Page 17: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/17.jpg)
TM meeting, KNMI, 12 November 2003
SF6 latitude vs. altitude December 2001
![Page 18: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/18.jpg)
TM meeting, KNMI, 12 November 2003
SF6 stations
01/01/2001 observed TM3 TM3 IMAGES TM5(KNMI) (MPI) (BIRA IASB) (JRC)
BRW 4.85 4.80 4.77 4.92 4.82SPO 4.50 4.37 4.34 4.34 4.36
NH-SH 0.35 0.43 0.43 0.58 0.46
![Page 19: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/19.jpg)
TM meeting, KNMI, 12 November 2003
Conclusions
222RN
• horizontal distribution similar for all 4 models
• synoptic variabiltity well reproduced by all TM models
• similar vertical mixing TM3(KNMI) and TM5
• TM3(MPI): stronger vertical mixing (exception: TM3(KNMI) / TM5 stronger regional convection in the tropics)
• significant influence at monitoring stations
SF6
• significant difference in interhemispheric mixing: TM-models similar, but IMAGES stronger gradient
• significant difference in troposphere – stratosphere exchange: TM3(KNMI) and TM5(JRC) strongest gradient stratosphere
![Page 20: EVERGREEN WP 4200: model intercomparison on transport and chemistry](https://reader035.fdocuments.net/reader035/viewer/2022070406/568141dc550346895dadb73c/html5/thumbnails/20.jpg)
TM meeting, KNMI, 12 November 2003
Outlook
• Finalisation 222Rn / SF6
• OH (full chemistry runs)• calibration of OH fields• single-tracer forwards runs for CH4, (CO and CO2 ?)