In the past 40 years, atmospheric chemists have come to realize that halogens exert a
powerful influence on the chemical composition of the troposphere and through that …

We present a simulation of the global present-day composition of the troposphere which
includes the chemistry of halogens (Cl, Br, I). Building on previous work within the GEOS …

The amended and adjusted Montreal Protocol has continued to reduce emissions and
atmospheric abundances of most controlled ozone-depleting substances. By 2012, the total …

Halogens released from long-lived anthropogenic substances, such as chlorofluorocarbons,
are the principal cause of recent depletion of stratospheric ozone, a greenhouse gas …

Chlorine atoms (Cl) are highly reactive toward hydrocarbons in the Earth's troposphere,
including the greenhouse gas methane (CH4). However, the regional and global CH4 sink …

We present a global simulation of tropospheric iodine chemistry within the GEOS-Chem
chemical transport model. This includes organic and inorganic iodine sources, standard gas …

Volatile halogenated organic compounds containing bromine and iodine, which are
naturally produced in the ocean, are involved in ozone depletion in both the troposphere …

Eutrophication promotes massive cyanobacteria blooms (CBBs), leading to the release of
volatile organic compounds (VOCs). To investigate the effects of cyanobacteria on VOC …

Very short-lived (VSL) bromocarbons are produced at a prodigious rate by ocean biology
and these source compounds (SG VSL), together with their inorganic degradation products …

Climate change modulates the effects of solar UV radiation on biogeochemical cycles in
terrestrial and aquatic ecosystems, particularly for carbon cycling, resulting in UV-mediated …