Light-absorbing carbonaceous aerosols (LACs), including black carbon and light-absorbing
organic carbon (brown carbon, BrC), have an important role in the Earth system via heating …

Cloud drop condensation nuclei (CCN) and ice nuclei (IN) particles determine to a large
extent cloud microstructure and, consequently, cloud albedo and the dynamic response of …

Atmospheric deposition of inorganic nitrogen is critical to the function of ecosystems and
elemental cycles. During the industrial period, humans have doubled the amount of …

Severe surface ozone pollution over major Chinese cities has become an emerging air
quality concern, raising a new challenge for emission control measures in China. In this …

Ambient air pollution is the leading environmental health risk factor globally, resulting in
nearly 3.5 million premature deaths in 2017 from stroke, ischemic heart disease, chronic …

The Arctic warms nearly four times faster than the global average, and aerosols play an
increasingly important role in Arctic climate change. In the Arctic, sea salt is a major aerosol …

Several recent observational studies have shown organic carbon aerosols to be a significant
source of absorption of solar radiation. The absorbing part of organic aerosols is referred to …

Current estimates of agricultural ammonia (NH 3) emissions in China differ by more than a
factor of 2, hindering our understanding of their environmental consequences. Here we …

We present a first description and evaluation of GEOS‐CHEM, a global threedimensional (3‐
D) model of tropospheric chemistry driven by assimilated meteorological observations from …

We present a comprehensive simulation of tropospheric chlorine within the GEOS-Chem
global 3-D model of oxidant–aerosol–halogen atmospheric chemistry. The simulation …