Ozone (O3) in the troposphere is an air pollutant and a greenhouse gas. In mainland China,
after the Air Pollution Prevention and Action Plan was implemented in 2013—and despite …

Tropospheric ozone (O 3) has increased globally since the end of 20th century. Its formation
undergoes complicated photochemical reactions and processes in the lower boundary …

Short‑lived climate forcers (SLCFs) affect climate and are, in most cases, also air pollutants.
They include aerosols (sulphate, nitrate, ammonium, carbonaceous aerosols, mineral dust …

The evolution of tropospheric ozone from 1850 to 2100 has been studied using data from
Phase 6 of the Coupled Model Intercomparison Project (CMIP6). We evaluate long-term …

Observational evidence shows the ubiquitous presence of ocean-emitted short-lived
halogens in the global atmosphere,–. Natural emissions of these chemical compounds have …

Global Climate is one chapter from the State of the Climate in 2022 annual report and is
available from https://doi. org/10.1175/BAMS-D-23-0090.1. Compiled by NOAA's National …

Quantification and attribution of long-term tropospheric ozone trends are critical for
understanding the impact of human activity and climate change on atmospheric chemistry …

Ultraviolet (UV) radiation drives the net production of tropospheric ozone (O3) and a large
fraction of particulate matter (PM) including sulfate, nitrate, and secondary organic aerosols …

Throughout spring and summer 2020, ozone stations in the northern extratropics recorded
unusually low ozone in the free troposphere. From April to August, and from 1 to 8 kilometers …

Mitigation of greenhouse gas emissions is crucial for achieving the goals of the Paris climate
agreement. One key gas is methane, whose representation in most climate models is limited …