Global impact of anthropogenic NH₃ emissions on upper tropospheric aerosol formation.

ABSTRACT: Anthropogenic ammonia (NH₃) emissions have significantly increased in recent decades due to enhanced agricultural activities, contributing to global air pollution. While the effects of NH₃ on surface air quality are well documented, its influence on particle dynamics in the upper troposphere-lower stratosphere (UTLS) and related aerosol impacts remain unquantified. NH₃ reaches the UTLS through convective transport and can enhance new particle formation (NPF). This modeling study evaluates the global impact of anthropogenic NH₃ on UTLS particle formation and quantifies its effects on aerosol loading and cloud condensation nuclei (CCN) abundance. We use the EMAC Earth system model, incorporating multicomponent NPF parameterizations from the CERN CL

SUBMITTER: Xenofontos C 

PROVIDER: S-EPMC12595474 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature