Isoprene carries approximately half of the flux of non-methane volatile organic carbon
emitted to the atmosphere by the biosphere. Accurate representation of its oxidation rate and …

This overview paper highlights the successes of the Ozone Monitoring Instrument (OMI) on
board the Aura satellite spanning a period of nearly 14 years. Data from OMI has been used …

An overview of the Community Earth System Model Version 2 (CESM2) is provided,
including a discussion of the challenges encountered during its development and how they …

Exposure to outdoor fine particulate matter (PM2. 5) is a leading risk factor for mortality. We
develop global estimates of annual PM2. 5 concentrations and trends for 1998–2018 using …

Abstract Fine particulate matter (PM2. 5) decreased by 30–40% across China during 2013–
2017 in response to the governmental Clean Air Action. However, surface ozone pollution …

Surface ozone is a severe air pollution problem in the North China Plain, which is home to
300 million people. Ozone concentrations are highest in summer, driven by fast …

Observations of surface ozone available from∼ 1,000 sites across China for the past 5 years
(2013–2017) show severe summertime pollution and regionally variable trends. We resolve …

Outdoor air pollution adversely affects human health and is estimated to be responsible for
five to ten per cent of the total annual premature mortality in the contiguous United States …

We present a new data set of annual historical (1750–2014) anthropogenic chemically
reactive gases (CO, CH 4, NH 3, NO x, SO 2, NMVOCs), carbonaceous aerosols (black …

Since 2013, clean-air actions in China have reduced ambient concentrations of PM2. 5.
However, recent studies suggest that ground surface O3 concentrations increased over the …