Dramatic changes in sea ice have been observed in both poles in recent decades. However,
the observational period for sea ice is short, and the climate models tasked with predicting …

As the intricacies of paleoclimate dynamics are explored, it is becoming understood that sea-
ice variability can instigate, or contribute to, climate change instabilities commonly described …

We present a 2700-year annually resolved chronology and snow accumulation history for
the Roosevelt Island Climate Evolution (RICE) ice core, Ross Ice Shelf, West Antarctica. The …

Springtime atmospheric mercury depletion events (AMDEs) lead to snow with elevated
mercury concentrations (> 200 ng Hg/L) in the Arctic and Antarctic. During AMDEs gaseous …

Tropospheric reactive bromine (Bry) influences the oxidation capacity of the atmosphere by
acting as a sink for ozone and nitrogen oxides. Aerosol acidity plays a crucial role in Bry …

Reconstructing the past variability of Arctic sea ice provides an essential context for recent
multi-year sea ice decline, although few quantitative reconstructions cover the Holocene …

Constraining the past sea ice variability in the Nordic Seas is critical for a comprehensive
understanding of the abrupt Dansgaard-Oeschger (DO) climate changes during the last …

Sea ice decline in the North Atlantic and Nordic Seas has been proposed to contribute to the
repeated abrupt atmospheric warmings recorded in Greenland ice cores during the last …

We use the GEOS-Chem chemical transport model to examine the influence of bromine
release from blowing-snow sea salt aerosol (SSA) on springtime bromine activation and O 3 …

Global iodine emissions have been increasing rapidly in recent decades, further influencing
the Earth's climate and human health. However, our incomplete understanding of the iodine …