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| Feature Update | Component | Relevant model | Notes | 
|---|---|---|---|
| Saving 2m ozone | diagnostic | CESM/CAM-Chem, WACCM and MUSICA | Some land component output is necessary for interpolating the surface layer to 2m. Forrest Lacey has performed this previously with MUSICA output. | 
| Saving MDA8 ozone | diagnostic | CESM/CAM-Chem, WACCM and MUSICA | Important for comparing with air quality attainment standards. | 
| Lightning NOx | atmosphere interactive emissions | CESM/CAM-Chem, WACCM and MUSICA | Scale aware production of lightning NOx. | 
| Upper boundary conditions | External forcing | Optional Upper boundary conditions for the low top L58 model created from a WACCM simulation (CAM Issue #533). | |
| Marine Organic Aerosol Emissions | emissions | CESM/CAM-Chem, WACCM and MUSICA | Add emissions of marine aerosols (CAM Issue #531). | 
| Nitrate aerosols | aerosol mechanism | CESM/CAM-Chem, WACCM and MUSICA | Implementation of MOSIAC or CARMA with nitrate aerosols. | 
Previous updates
Previous updates that have happened in the model.
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