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Modification of Tracegas Scenarios

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Presentation on theme: "Modification of Tracegas Scenarios"— Presentation transcript:

1 Modification of Tracegas Scenarios
Brapho Box/Slimcat CTM derived stratospheric climatology (Marco Bruns) SZA and albedo dependence of photochemistry tropospheric modification introduced constant tropospheric O3 number density profile (all) biomass burning/ biogenic emission (5N, July) H2CO 2ppb < 3 km (may affect BrO fit) NO2 taken from MPI-2D CTM O3 doubled < 5 km free tropospheric BrO (55N, April) BrO 1ppt < 10 km (Fitzenberger et al., 2001) PBL BrO explosion (75S, October) BrO 50ppt < 2 km O3 0ppm < 2 km 24 trace gas profile scenarios

2 Tracegas scenarios: total column O NO BrO OClO file [DU] [1019/m2] [1018/m2] [1016/m2] 9610am_lat18N_lon300_SZA40_a10.tg 9610am_lat18N_lon300_SZA40_a90.tg 9610am_lat55N_lon300_SZA69_a10.tg 9610am_lat55N_lon300_SZA69_a90.tg 9610am_lat77N_lon000_SZA86_a10.tg 9610am_lat77N_lon000_SZA86_a90.tg 9610am_lat77S_lon000_SZA90_a10.tg PBL BrO / high OClO/ 9610am_lat77S_lon000_SZA90_a90.tg ozone hole 9701am_lat18N_lon300_SZA50_a10.tg 9701am_lat18N_lon300_SZA50_a90.tg 9701am_lat55N_lon000_SZA80_a10.tg 9701am_lat55N_lon000_SZA80_a90.tg 9704am_lat18N_lon300_SZA40_a10.tg 9704am_lat18N_lon300_SZA40_a90.tg 9704am_lat55N_lon300_SZA49_a10.tg free tropospheric BrO 9704am_lat55N_lon300_SZA49_a90.tg 9704am_lat77N_lon000_SZA69_a10.tg 9704am_lat77N_lon000_SZA69_a90.tg 9707am_lat18N_lon300_SZA41_a10.tg biomass burning 9707am_lat18N_lon300_SZA41_a90.tg 9707am_lat55N_lon300_SZA39_a10.tg 9707am_lat55N_lon300_SZA39_a90.tg 9707am_lat77N_lon000_SZA59_a10.tg 9707am_lat77N_lon000_SZA59_a90.tg

3 Antarctic Ozone hole (77S, Oct 1996)
Ozone „hole“ profile (151 DU) zero surface ozone 50 ppt BrO < 2km (BrO explosion) stratospheric maximum at km

4 Antarctic Ozone Hole (Part II)
High OClO Free tropospheric BrO (55N, Apr) 1 ppt BrO < 10 km

5 Biomass burning (18N, July)
Formaldehyde 2ppb < 3 km troposperic NO2 from MPI-2D

6 Biomass burning (Part II)
tropospheric O3 doubled <5 km Conclusions: more realistic scenarios developed CDI simulation repeated (see ftp server) basic and SNR error assessment with new scenarios

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