...
| Page Properties | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Title
Nitrate, Stratospheric Aerosol, and their Coupling to Atmospheric Chemistry for E3SMv3
Authors
Hailong Wang, Xiaohong Liu (Unlicensed), Ziming Ke, Zheng Lu, Balwinder Singh, Mingxuan Wu, Rudong Zhang
Abstract
Several science-driven model developments, including the new treatments of nitrate aerosol and stratospheric sulfate, are currently being implemented in E3SM to better capture their role in the Earth’s water cycle and biogeochemistry, and cryosphere system. E3SMv1 simulates the major aerosol species but neglects a few important aerosol components (e.g., nitrate) that will be increasingly important in future climate. Nitrate aerosol is projected to become a significant aerosol component as sulfur and carbonaceous emissions are reduced while NOx and ammonia emissions continue to increase. Stratospheric aerosols from volcanic eruptions are crudely treated in E3SMv1 by prescribing stratospheric aerosol optical properties from CESM simulations, which is inconsistent with the prognostic treatment of tropospheric aerosols. The new treatment of prognostic stratospheric sulfate will add a new capability for geoengineering simulations as well.
...