Climate Science
The emperor penguin Aptenodytes forsteri is highly sea ice dependent and vulnerable to climate change, yet the at-sea distribution and habitat associations of breeding adults remain poorly understood for colonies […] The post Breeding emperor penguins show interannual recurrence in shelf-break associated foraging areas across contrasting sea ice conditions in the northwestern Weddell Sea appeared…
The Antarctic Peninsula and Scotia Sea are experiencing the greatest pressures from climate change and fisheries in the Southern Ocean, with associated penguin population declines. However, surveys of the South […] The post Population declines and changes in community composition at the world’s largest penguin colony appeared first on British Antarctic Survey.
The Arctic is at the forefront of global warming. More frequent and intense rain-on-snow events during winter are altering the annual snowpack with its environmental proxy records, so that Svalbard […] The post In-situ tracer percolation experiments to constrain the influence of near-surface melting on Svalbard snow signatures appeared first on British Antarctic Survey.
The post Peat reveals 16 500 years of Falkland Islands climate change, and a lot more besides appeared first on British Antarctic Survey.
Subglacial sedimentary basins in Antarctica are hypothesized to modulate ice flow and biogeochemical cycles via groundwater and geothermal feedbacks, yet their properties remain poorly constrained. Here, we present a joint […] The post Distinct Groundwater Regimes in West Antarctic Sedimentary Basins Inferred From Magnetotelluric Imaging appeared first on British Antarctic Survey.
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 […] The post Year-round movement of emperor penguin colonies observed from space appeared first on British Antarctic Survey.
Southern Hemisphere (SH) circulation and surface climate changes are emerging in recent decades. For example, in most seasons, the SH Hadley cell edge and the eddy-driven jet stream have shifted […] The post Disentangling Anthropogenic Effects on Southern Hemisphere Circulation and Surface Climate: A Multi‐Model Large Ensemble Approach appeared first on British Antarctic Survey.
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, […] The post Sensitivity of the Bootstrap sea ice concentration algorithm to surface parameters in the Antarctic marginal ice zone using passive microwave retrievals appeared…
Climate change is driving vegetation expansion in polar regions. Roland et al.1 report a 14-fold greening trend across the Antarctic Peninsula region since the 1980s, based on satellite data. However, […] The post Greening rates are sensitive to methodology and biology; comment to Sustained greening of the Antarctic Peninsula observed from satellites [Commentary] appeared first…
During Pleistocene ice ages, abrupt climate changes co-occurred with switches in Atlantic Meridional Overturning Circulation (AMOC) strength. The global impact and characteristic north-south temperature pattern of these events is typically […] The post Planetary energy budget during abrupt glacial climate events set by Atlantic Ocean heat valve appeared first on British Antarctic Survey.