Global net climate effects of anthropogenic reactive nitrogen.

ABSTRACT: Anthropogenic activities have substantially enhanced the loadings of reactive nitrogen (Nr) in the Earth system since pre-industrial times^1,2, contributing to widespread eutrophication and air pollution^3-6. Increased Nr can also influence global climate through a variety of effects on atmospheric and land processes but the cumulative net climate effect is yet to be unravelled. Here we show that anthropogenic Nr causes a net negative direct radiative forcing of -0.34 [-0.20, -0.50] W m^-2 in the year 2019 relative to the year 1850. This net cooling effect is the result of increased aerosol loading, reduced methane lifetime and increased terrestrial carbon sequestration associated with increases in anthropogenic Nr, which are not offset by the warming effects

SUBMITTER: Gong C 

PROVIDER: S-EPMC11324526 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature