Found 12625 items
26 September, 2022 by Ingrid Cnossen
Climate change in the upper atmosphere (∼90 − 500 km altitude) has important impacts on practical applications. To prepare for these, realistic projections of future climate change are needed. The…Read more on A realistic projection of climate change in the upper atmosphere into the 21st century
25 September, 2022 by Johnathan Ross, Nigel Meredith, Richard Horne, Sarah Glauert
The banded structure of Electromagnetic Ion Cyclotron (EMIC) wave spectra and their resonant interactions with radiation belt electrons depend on the cold ion composition. However, there is a great deal…Read more on The importance of ion composition for radiation belt modelling
21 September, 2022 by Alex Burton-Johnson, Teal Riley
This paper applies magnetic fabric analyses to plutons of the East Pacific continental arc. Continental arc magmatism is strongly episodic, with voluminous granitic magma addition occurring during discrete high-flux events…21 September, 2022 by Norman Ratcliffe
A wide range of biologging devices are now commonly deployed to study the movement ecology of birds, but deployment of these devices is not without its potential risks and negative…20 September, 2022 by Bjorg Apeland, Clara Manno, Geraint Tarling, Gabriele Stowasser, Sophie Fielding
Estimating the amount of organic carbon leaving the upper water column and becoming sequestered in the deep ocean is a major challenge in our understanding the oceanic C cycle. This…19 September, 2022 by Hamish Pritchard
Seasonal melting of glaciers and snow from the western Third Pole (TP) plays important role in sustaining water supplies downstream. However, the future water availability of the region, and even…18 September, 2022 by Geraint Tarling, Jennifer Freer, Martin Collins
Lanternfishes (Myctophidae) are one of the most species-rich families of mid-water fishes. They inhabit the mesopelagic zone, where physical barriers to dispersal and gene flow are permeable. Thus, modes of…16 September, 2022 by Markus Frey
Previous Antarctic summer campaigns have shown unexpectedly high levels of oxidants in the lower atmosphere of the continental plateau and at coastal regions, with atmospheric hydroxyl radical (OH) concentrations up…16 September, 2022 by Thomas Bauska
Here we use high-precision carbon isotope data (δ13C-CO2) to show atmospheric CO2 during Marine Isotope Stage 4 (MIS 4, ~70.5-59 ka) was controlled by a succession of millennial-scale processes. Enriched…16 September, 2022 by Diana Vladimirova, Jack Humby, Liz Thomas
In this study, we used the stable water isotope record (δ18O) from an ice core drilled in Palmer Land, southern Antarctic Peninsula (AP). Utilizing δ18O we identified two climate regimes…15 September, 2022 by Louise Sime
Southern Ocean bathymetry constrains the path of the Antarctic Circumpolar Current (ACC), but the bathymetric influence on the coupled ocean–atmosphere system is poorly understood. Here, we investigate this impact by…14 September, 2022 by Jasmine Lee
Antarctic biodiversity faces an unknown future with a changing climate. Most terrestrial biota is restricted to limited patches of ice-free land in a sea of ice, where they are adapted…14 September, 2022 by Joanne Johnson
Cosmogenic-nuclide concentrations in subglacial bedrock cores show that the West Antarctic Ice Sheet (WAIS) at a site between Thwaites and Pope Glaciers was at least 35 m thinner than present…12 September, 2022 by Marie Attard
The amniote eggshell is a fundamental aspect of the embryo life-support system, protecting it from UV light, microbes and mechanical damage, while regulating gas exchange and providing calcium for growth.…Read more on Global diversity and adaptations of avian eggshell thickness indices
12 September, 2022 by Michael McCarthy, Michael McCarthy
The current Chilean megadrought has led to acute water shortages in central Chile since 2010. Glaciers have provided vital fresh water to the region’s rivers, but the quantity, timing and…Read more on Glacier contributions to river discharge during the current Chilean megadrought
12 September, 2022 by Anne-Sophie Bonnet-Lebrun, Norman Ratcliffe
Density-dependent prey depletion around breeding colonies has long been considered an important factor controlling the population dynamics of colonial animals. Ashmole proposed that as seabird colony size increases, intraspecific competition…Read more on Foraging range scales with colony size in high-latitude seabirds
12 September, 2022 by Hugh Venables
Tides significantly affect polar coastlines by modulating ice shelf melt and modifying shelf water properties through transport and mixing. However, the effect of tides on the marine carbonate chemistry in…10 September, 2022 by Robert Mulvaney
The response of the East Antarctic Ice Sheet to past intervals of oceanic and atmospheric warming is still not well constrained but is critical for understanding both past and future…