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The introduction of new processes in biogeochemical models brings new model parameters that must be set. Optimization of the model parameters is crucial to ensure that model performance is based on process representation (i.e., functional forms) rather than poor choices of input parameter values.
Projections of Antarctic Ice Sheet mass loss and therefore global sea level rise are hugely uncertain, partly due to how mass loss of the ice sheet occurs at the grounding line. The Wilkes Subglacial Basin (WSB), a vast region of the East Antarctic Ice Sheet…
Meridional winds over the seasonal ice zone of the Antarctic have undergone changes and likely contributed to sea ice extent variability in recent decades. In this study, using observations and an eddy-resolving channel model of the Antarctic seasonal ice zone…
Fabrics, also known as textures or crystallographic preferred orientations, reveal information about the deformation history of the flow of polycrystalline materials, including glacial ice, olivine in the mantle, and feldspar and quartz in the crust.
Between March 15-19, 2022, East Antarctica experienced an exceptional heatwave with widespread 30-40° C temperature anomalies across the ice sheet. This record-shattering event saw numerous monthly temperature records being broken including a new all-time temperature record of -9.
Between March 15-19, 2022, East Antarctica experienced an exceptional heatwave with widespread 30-40° C temperature anomalies across the ice sheet. In Part I, we assessed the meteorological drivers that generated an intense atmospheric river (AR)…
Estimates of the distribution and density of Antarctic krill (Euphausia superba Dana, 1850) were derived from a large-scale survey conducted during the austral summer in the Southwest Atlantic sector of the Southern Ocean and across the Scotia Sea in 2018–19, the '2018–19 Area 48 Survey'.
Catch rates or catch per unit of effort (CPUE) are used for data-poor exploratory fisheries without integrated assessments in the CPUE by seabed area method to estimate stock biomass in the interim of collecting sufficient tag recaptures. Here, we address the two questions: (1)…
Antarctic polynyas are persistent open water areas which enable early and large seasonal phytoplankton blooms. This high primary productivity, boosted by iron supply from coastal glaciers, attracts organisms from all trophic levels to form a rich and diverse community.
Estimates of the distribution and density of Antarctic krill (Euphausia superba Dana, 1850) were derived from a large-scale survey conducted during the austral summer in the Southwest Atlantic sector of the Southern Ocean and across the Scotia Sea in 2018–19, the ‘2018–19 Area 48 Survey’.
The foraging behaviour of conspecific female Antarctic fur seals (AFS) was compared … simultaneously at 2 breeding colonies at Iles Kerguelen (S Indian Ocean). A remnant colony at IIes … Nuageuses (IN)…
This review of late-Holocene palaeoclimatology represents the results from a PAGES/CLIVAR … Intersection Panel meeting that took place in June 2006. The review is in three parts: the principal high-resolution … proxy disciplines (trees, corals, ice cores and documentary evidence)…
Signals used in mate attraction are predicted to be highly condition dependent, and thus should be … sensitive to environmental contributions to condition. However, the effects of temporal fluctuations in the … environment on sexual selection in long-lived animals have been largely ignored.
We report a long-term study of offspring sex … ratios in the cooperatively breeding superb fairy-wren … Malurus cyaneus. Detailed study of this species had … revealed a suite of potentially strong selection pressures … on the sex ratio. First…
For over a century, atmospheric electricity data has been collected from all over the world, as well as from space. For the last thirty years, Antarctica has been the observatory site of … choice for atmospheric electricity studies.
Subantarctic islands contain some of the most remote and least disturbed wilderness regions of the world. Despite best efforts at conservation…
ABSTRACT: Foraging movements of Adélie penguins are constrained both by environmental conditions … (e.g. sea ice cover) and life history factors (e.g. regular offspring provisioning). We describe … within season changes in foraging range…
An overview of the Davis station hydroxyl airglow temperature program will be given. Seasonal structure, planetary scale periodicities and inter-year variability determined from six years of hydroxyl airglow rotational temperatures will be presented. Solar cycle influences will be examined.
Black-browed albatrosses breed at four known locations in Chile: Diego de Almagro (15,900 pairs, Lawton et al. 2003), Evangelistas (4,700; Arata et al. 2003), Ildefonso (47,000; this presentation) and Diego Ramirez (55,300; Robertson et al. unpublished). After the Falkland Islands/Islas Malvinas…