The goal of the Tropospheric Ozone Assessment Report (TOAR) is to provide the research
community with an up-to-date scientific assessment of tropospheric ozone, from the surface …

Sea spray aerosol (SSA) is the largest natural source of aerosols in the troposphere, and
has profound potential significance for climate change, visibility, and human health. It has …

We present an updated mechanism for tropospheric halogen (Cl+ Br+ I) chemistry in the
GEOS-Chem global atmospheric chemical transport model and apply it to investigate …

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

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 …

Our understanding of the processes that control the burden and budget of tropospheric
ozone has changed dramatically over the last 60 years. Models are the key tools used to …

Iodine is a naturally-occurring halogen in natural waters generally present in concentrations
between 0.5 and 100 µg L− 1. During oxidative drinking water treatment, iodine-containing …

Iodine is a critical trace element involved in many diverse and important processes in the
Earth system. The importance of iodine for human health has been known for over a century …

Atmospheric iodine causes tropospheric ozone depletion and aerosol formation, both of
which have significant climate impacts, and is an essential dietary element for humans …

Aircraft and satellite observations indicate the presence of ppt (ppt≡ pmol/mol) levels of BrO
in the free troposphere with important implications for the tropospheric budgets of ozone …