Recent results from GA6.0#136.17 (including GLOMAP-mode) + CheST (StratTrop chemistry)

Model Run Chemistry Aerosol-microphys Aerosol-optical Owner UM version Monsoon job ID Met Office ID Link to chemistry evaluation Link to aerosol evaluation Link to Validation Note Comments
1 StratTrop GLOMAP-mode RADAER/ACTIVATE/Gas-phase RF OFF Steven Hardiman 10.2 N/A mi-ah813 Pdficon small.png ah813.pdf Info circle.png Pdficon small.png ah813_updated.pdf Info circle.png None at present ai985 vs ah813 Run for 20 years - plots based on last 10 years; Biogenic ems prescribed; No trop het chem; Lightning ems 10.7 TgN/yr; CH4 lifetime too short; Strat o3 max reduced and in better agreement with obs; Diagnosed STE flux of O3 clearly wrong. Updated pdf now includes updated methane lifetime calculation and nh_oh/sh_oh ratio.
2 StratTrop GLOMAP-mode RADAER/ACTIVATE/O3, N2O, CH44 RF ON Steven Hardiman 10.2 N/A mi-ai985 Pdficon small.png ai985.pdf Info circle.png Pdficon small.png ai985_updated.pdf Info circle.png None at present ai985 vs ah813 Run for 20 years - plots based on last 10 years; Biogenic ems prescribed; No trop het chem; RF bugfix included; Lightning ems 10.7 TgN/yr; CH4 lifetime too short; Strat o3 max reduced and in better agreement with obs; Diagnosed STE flux of O3 clearly wrong. Updated pdf now includes updated methane lifetime calculation and nh_oh/sh_oh ratio.
3 StratTrop GLOMAP-mode RADAER/ACTIVATE/O3, N2O, CH4 RF ON Steven Hardiman 10.2 N/A mi-aj868 Pdficon small.png aj868.pdf Info circle.png Pdficon small.png aj868_updated.pdf Info circle.png None at present aj868 vs ai985 RF bugfix included; Lightning emissions halved. Updated pdf now includes updated methane lifetime calculation and nh_oh/sh_oh ratio. Methane lifetime now increased.
4 StratTrop GLOMAP-mode RADAER/ACTIVATE/O3, N2O, CH4 RF OFF João Teixeira 10.2 N/A mi-ak384 Pdficon small.png ak384.pdf Info circle.png None at present ak384 vs aj868 RF bugfix included; Lightning emissions halved. Updated pdf now includes updated methane lifetime calculation and nh_oh/sh_oh ratio.


Results from GA7.0 (including GLOMAP-mode) + CheST (StratTrop chemistry)

Model Run Chemistry Aerosol-microphys Aerosol-optical Owner UM version Monsoon job ID Met Office ID Link to chemistry evaluation Link to aerosol evaluation Link to Validation Note Comments
1 StratTrop GLOMAP-mode RADAER/ACTIVATE/Gas-phase RF ON Mohit Dalvi 10.3 N/A u-ac900
GA7 N96 AMIP
Pdficon small.png u-ac900 Evaluation Info circle.png Pdficon small.png u-ac253 Evaluation Info circle.png None at present None at present Run for 10 years - plots based on 10th year; Lightning emissions halved. Tropopause height bugfix included;
Branch to maintain SAD above 12km ; compared against base vn10.3 GA7 suite -u-ac253


Investigating Low OH, High Methane Lifetime in vn10.5 GA7.0 CheST/StratTrop + GLOMAP simulations

Suite-Id Owner UM version Branches and Configuration Details
(apart from CheST+GLOMAP+RADAER+UKCAGHG)
Simulation Length Plots CH4 lifetime years
Whole Atm vs OH
; ACCMIP=9.3 +/− 0.9
Mean OH molec/cm3
ACCMIP = 1.17(+/−0.1)e+06
Comments
u-ac253 FOC vn10.3 Lightning NOx 50%, Tropopause height bugfix
ukca_ch2br2mmr=1.802e-11, ukca_h2mmr=3.453e-08
20 year, Plots:11-20yr Pdficon small.png ac253_OH_Lawrence Info circle.png, Pdficon small.png ac253_ch4_lifetime Info circle.png 8.63 8.98e+05 Explosive-volc-SO2 emitted, Aero-surf-area=0
u-ad265 MD vn10.3 Lightning NOx 50%, Tropopause height bugfix, Strat-Hetero aer-surf-area fixes
ukca_ch2br2mmr=1.802e-11, ukca_h2mmr=3.453e-08
20 year, Plots:6-10yr Pdficon small.png ad265_OH_Lawrence Info circle.png, Pdficon small.png ad265_ch4_lifetime Info circle.png 9.65 8.0e+05 Expl-volc-SO2 emitted
u-ac961 FOC vn10.3 Lightning NOx 50%, Tropopause height bugfix, ExplVolc_SO2 Off
ukca_ch2br2mmr=1.802e-11, ukca_h2mmr=3.453e-08
20 year, Plots:6-10yr Pdficon small.png ac961_OH_Lawrence Info circle.png, Pdficon small.png ac961_ch4_lifetime Info circle.png 8.8 8.8e+05 Expl-volc-SO2 Off
puma-aa342 MK vn10.4 Lightning NOx 50%, Tropopause height bugfix, Strat-Hetero aer-surf-area fixes, ExplVolc_SO2 Off
ukca_ch2br2mmr=1.0000-12, ukca_h2mmr=500.0e-09
10 year, Plots:6-10yr Pdficon small.png aa342_OH_Lawrence Info circle.png, Pdficon small.png aa342_ch4_lifetime Info circle.png 13.2 6.22e+05 Expl-volc-SO2 Off
u-ae771 MD vn10.5 Lightning NOx 50%, Tropopause height bugfix, Strat-Hetero-psc aero-surf-area fixes, ExplVolc_SO2 Off
ukca_ch2br2mmr=1.0000-12, ukca_h2mmr=500.0e-09
20 year, Plots:11-20yr Pdficon small.png ae771_OH_Lawrence Info circle.png, Pdficon small.png ae771_ch4_lifetime Info circle.png 14.3 5.73e+05 Expl-volc-SO2 Off