British Antarctic Survey

A comprehensive phylogenomic framework for brachiopod evolution among lophotrochozoans

Brachiopods appeared early in the Cambrian radiation and represent an important clade for understanding the origin of animal body plans and the evolution of biomineralized structures. A robust phylogenetic framework of the living representatives is needed to answer persistent que...

Interacting effects of droplet number and ice formation processes on mixed-phase cold-air outbreak clouds

Abstract. Shallow, mixed-phase clouds associated with cold-air outbreak (CAO) events are natural laboratories for studying mixed-phase cloud processes which are important for estimating cloud-phase feedback in the warming climate. Recent studies show that CAO clouds are sensitive...

Antarctic sea ice over the past 130 000 years – Part 2: A review of its role in the Earth system

Abstract. Antarctic sea-ice cover reached historically low levels in 2023, consistent with the simulated decrease in sea-ice extent in response to anthropogenic warming. Antarctic sea ice is closely linked to multiple components of the Earth system, thus its demise could precipit...

"Extraordinary claims require extraordinary evidence" – proactively evidencing research software impact

As RSEs, at some point we may need to provide evidence that our software actually has some effect on the world. Whether this is for career progression, the REF, just for your own peace of mind, collecting usage data takes many forms but can often come as an afterthought. In this...

"Extraordinary claims require extraordinary evidence" – proactively evidencing research software impact

As RSEs, at some point we may need to provide evidence that our software actually has some effect on the world. Whether this is for career progression, the REF, just for your own peace of mind, collecting usage data takes many forms but can often come as an afterthought. In this...

The Source of Arctic Precipitation in HadGEM3‐GC5

Abstract Snow and rain are increasing in the Arctic. Climate model projections indicate a 50% increase in precipitation by the end of the century. This increase is driven by increased local evaporation following reduced sea ice coverage alongside enhanced global evaporation and t...

Recent intensification of extreme precipitation over East Antarctica driven by increases in greenhouse gases and stratospheric ozone

Abstract. Extreme precipitation is a major contributor to the total precipitation over Antarctica and its variability. However, it remains poorly understood whether Antarctic extreme precipitation has undergone recent changes and, if so, whether these changes are anthropogenicall...

Year-round movement of emperor penguin colonies observed from space

Abstract Emperor penguins are threatened by climate change and their population is predicted to decline rapidly this century due to changes in Antarctic sea ice. Remote sensing is a key tool for monitoring emperor penguins but analysis has been restricted to spring/summer due to...

West Antarctic subglacial geology distinguished by Pb isotopes and Rb–Sr ages in ice-rafted feldspars

Provenance data from sediment delivered to the marine environment by icebergs can trace past ice sheet dynamics and help constrain the ice sheet models used in sea level projections. This approach requires an interpretative framework, but in Antarctica, blanketing ice sheets hind...

Krill defecation at depth reduces carbon flux attenuation in the Weddell Sea euphotic zone

Abstract. The Weddell Sea, Southern Ocean, is a highly productive location of deep-water formation and a globally important site of carbon sequestration. Here, the biological carbon pump is dominated by particulate processes (e.g. zooplankton faecal pellets and phytoplankton detr...

Rb-Sr and U-Pb geochronology of neoblasts and porphyroclasts constrain movements along reactivated segments of the Outer Hebrides Fault Zone, NW Scotland

The crustal-scale Outer Hebrides Fault Zone (OHFZ) (NW Scotland) was initiated as a Stenian-Tonian (1040-950 Ma) ductile thrust, as determined by published U-Pb dating of syn-kinematic apatite. Thrust-related mylonites were then reactivated to form phyllonite belts during success...

Sensitivity of the Bootstrap sea ice concentration algorithm to surface parameters in the Antarctic marginal ice zone using passive microwave retrievals

Abstract. Changes in sea ice concentration (SIC) and derived sea ice extent have been monitored using microwave radiometers since the late 1970s, providing information about the polar response to climate change, making SIC an invaluable variable for numerical models. Antarctic se...