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Understanding Aerosols and Chemistry in IPSL-CM5 and IPSL-CM6 Earth System Models

This overview delves into the aerosol and chemistry components of the IPSL-CM5 and IPSL-CM6 Earth System Models. It highlights inputs from the INCA Chemistry Model, explores anthropogenic and natural aerosol emissions, and examines the roles of photochemistry, wet, and dry deposition. Additionally, it discusses oceanic circulation, marine biogeochemistry, and the evolution of climate forcing agents from 1850 to 2100. The resolution of various model components and their implications for global climate change are also addressed.

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Understanding Aerosols and Chemistry in IPSL-CM5 and IPSL-CM6 Earth System Models

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  1. Aerosols and chemistry in IPSL-CM5 IPSL-CM5 Earth System Model Inputs Climate-Chemistry Models Climatologies Anthropogenic emissions • INCA Chemistry Model • Natural aerosol emissions • photochemistry (NMHC/NOx/O3) • wet and dry deposition … NEMO/OPA Oceanic Circulation PISCES Marine biogeochemistry Natural emissions 3D fields: sea-salt, BC, OC, sulfur, dust 1850-2000 2000-2100 Evolution of climate forcing agents : - Landuse- SST • [LL-GHG] General Circulation Model Large scale advection of tracers General Circulation Model LMDz Resolution: 3.75°x1.9°x19 vertical levels (surf 35 km) LMDz Soil and vegetation Model ORCHIDEE

  2. Aerosols and chemistry in IPSL-CM6 More runs with IPSL-CM6 Earth System Model Inputs Climatologies A few runs with IPSL-CM6 Anthropogenic emissions • INCA Chemistry Model • Natural aerosol emissions • Wet and dry deposition … NEMO/OPA Oceanic Circulation PISCES Marine biogeochemistry Oxydants • Evolution of climate forcing agents : • - Landuse- SST • LL-GHG General Circulation Model Large scale advection of tracers General Circulation Model 3D fields: sea-salt, BC, OC, sulfur, dust 1850-2000 2000-2100 LMDz - NP Resolution: 144 x 142 x79 vertical levels LMDz - NP NEMO/OPA Oceanic Circulation PISCES Marine biogeochemistry Soil and vegetation Model Soil and vegetation Model ORCHIDEE ORCHIDEE

  3. Aerosols and chemistry in IPSL-CM6 IPSL-CM6 Earth System Model Inputs • INCA Chemistry Model • Natural aerosol emissions • Photochemistry (NMHC/NOx/O3) • Wet and dry deposition … Anthropogenic emissions ORCHIDEE Soil and vegetation Model • Evolution of climate forcing agents : • - Landuse • LL-GHG General Circulation Model Large scale advection of tracers LMDz - NP NEMO/OPA Oceanic Circulation PISCES Marine biogeochemistry Resolution: 144 x 14 x79 vertical levels

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