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Environmental setting
1 August, 2014 by Andrew Meijers, Huw Griffiths, Susie Grant
Geochemistry of the 1100 Ma intrusive rocks from the Ahlmannryggen region, Dronning Maud Land, Antarctica
1 August, 2014 by Teal Riley
The recognition of a Mesoproterozoic large igneous province (LIP) across large parts of southern Africa has been strengthened by recent geochronology, geochemistry and petrology. The c. 1100 Ma Umkondo province…Southern Ocean squid
1 August, 2014 by Huw Griffiths, Paul Rodhouse, Susie Grant
Antarctic-wide array of high-resolution ice core records reveals pervasive lead pollution began in 1889 and persists today
28 July, 2014 by Liz Thomas
Interior Antarctica is among the most remote places on Earth and was thought to be beyond the reach of human impacts when Amundsen and Scott raced to the South Pole…Activity patterns of wintering Great Skuas Stercorarius skua
25 July, 2014 by Richard Phillips
Capsule Great Skuas Stercorarius skua wintering in different areas spent different amounts of time in flight (foraging or searching for food) and so may be experiencing different feeding conditions. Aims…Read more on Activity patterns of wintering Great Skuas Stercorarius skua
Climate change selects for heterozygosity in a declining fur seal population
24 July, 2014 by Jaume Forcada
Global environmental change is expected to alter selection pressures in many biological systems, but the long-term molecular and life history data required to quantify changes in selection are rare. An…Read more on Climate change selects for heterozygosity in a declining fur seal population
Variability of Mg-calcite in Antarctic bryozoan skeletons across spatial scales.
17 July, 2014 by David Barnes
Bryozoans exhibit a highly variable chemistry within their calcium carbonate skeletons. Previous studies have shown that the level of Mg-calcite in skeletons increases with increasing seawater temperature. For high-latitude regions…Read more on Variability of Mg-calcite in Antarctic bryozoan skeletons across spatial scales.
Eddy-induced variability in Southern Ocean abyssal mixing on climatic timescales
13 July, 2014 by Jean-Baptiste Sallee, Michael Meredith
The Southern Ocean plays a pivotal role in the global ocean circulation and climate1, 2, 3. There, the deep water masses of the world ocean upwell to the surface and…Read more on Eddy-induced variability in Southern Ocean abyssal mixing on climatic timescales
Global diversity and oceanic divergence of humpback whales (Megaptera novaeangliae)
7 July, 2014 by Jennifer Jackson
Humpback whales (Megaptera novaeangliae) annually undertake the longest migrations between seasonal feeding and breeding grounds of any mammal. Despite this dispersal potential, discontinuous seasonal distributions and migratory patterns suggest that…Read more on Global diversity and oceanic divergence of humpback whales (Megaptera novaeangliae)
Limpet feeding rate and the consistency of physiological response to temperature
3 July, 2014 by Andrew Clarke, Lloyd Peck, Michael Thorne, Simon Morley
Thermal reaction norms are fundamental relationships for geographic comparisons of organism response to temperature. They are shaped by an organism’s environmental history and provide insights into both the global patterns…Read more on Limpet feeding rate and the consistency of physiological response to temperature
Diet of South American fur seals at the Falkland Islands
1 July, 2014 by Iain Staniland
South American fur seals (SAFS) (Arctophoca australis1) are one of the most widely distributed otariids breeding on both the Atlantic and Pacific sides of South America, from Uruguay to Peru…Read more on Diet of South American fur seals at the Falkland Islands
Saturn’s dynamic magnetotail: A comprehensive magnetic field and plasma survey of plasmoids and travelling compression regions, and their role in global magnetospheric dynamics
1 July, 2014 by Mervyn Freeman
We present a comprehensive study of the magnetic field and plasma signatures of reconnection events observed with the Cassini spacecraft during the tail orbits of 2006. We examine their “local”…Open access data in polar and cryospheric remote sensing
1 July, 2014 by Andrew Fleming, Adrian Fox
This paper aims to introduce the main types and sources of remotely sensed data that are freely available and have cryospheric applications. We describe aerial and satellite photography, satellite-borne visible,…Read more on Open access data in polar and cryospheric remote sensing
Colony attendance and at-sea distribution of thin-billed prions during the early breeding season
1 July, 2014 by Richard Phillips
Procellariiform seabirds have extreme life histories; they are very long-lived, first breed when relatively old, lay single egg clutches, both incubation and chick-rearing are prolonged and chicks exhibit slow growth.…Adjustment of pre-moult foraging strategies in Macaroni Penguins Eudyptes chrysolophus according to locality, sex and breeding status
1 July, 2014 by Philip Trathan
The annual moult creates the highest physiological stress during a penguin's breeding-cycle and is preceded by a period of hyperphagia at sea. Although crucial to individual survival, foraging strategies before…Extent of ECH Wave Emissions in Earth’s Magnetotail
1 July, 2014 by Richard Horne
The exact role of electron cyclotron harmonic (ECH) waves in driving diffuse aurora has been controversial for many years. Using THEMIS observations from five magnetotail seasons, we investigate the occurrence…Read more on Extent of ECH Wave Emissions in Earth’s Magnetotail
Evolution of the Southern Annular Mode during the past millennium
1 July, 2014 by John Turner, Robert Mulvaney
The Southern Annular Mode (SAM) is the primary pattern of climate variability in the Southern Hemisphere1, 2, influencing latitudinal rainfall distribution and temperatures from the subtropics to Antarctica. The positive…Read more on Evolution of the Southern Annular Mode during the past millennium
New views of plant fossils from Antarctica: a comparison of X-ray and neutron imaging techniques
1 July, 2014 by Jane Francis
A fossil plant of Eocene age from Antarctica was studied using X-ray and neutron tomography to reveal the three-dimensional plant structures encased within carbonate nodules. The fossil was identified as…A cool temperate climate on the Antarctic Peninsula during the latest Cretaceous and early Paleogene
1 July, 2014 by Alistair Crame, Jane Francis, Rowan Whittle, Vanessa Bowman
Constraining past fluctuations in global temperatures is central to our understanding of the Earth's climatic evolution. Marine proxies dominate records of past temperature reconstructions, whereas our understanding of continental climate…Assessing population viability while accounting for demographic and environmental uncertainty
1 July, 2014 by Norman Ratcliffe
Predicting the future trend and viability of populations is an essential task in ecology. Because many populations respond to changing environments, uncertainty surrounding environmental responses must be incorporated into population…Is realistic Antarctic sea ice extent in climate models the result of excessive ice drift?
1 July, 2014 by Paul Holland
For the first time, we compute the sea-ice concentration budget of a fully coupled climate model, the Australian ACCESS model, in order to assess its realism in simulating the autumn–winter…Influence of fasting during moult on the faecal microbiota of penguins
30 June, 2014 by Philip Trathan
Many seabirds including penguins are adapted to long periods of fasting, particularly during parts of the reproductive cycle and during moult. However, the influence of fasting on the gastrointestinal (GI)…Read more on Influence of fasting during moult on the faecal microbiota of penguins
The seasonality of Antarctic sea ice trends
28 June, 2014 by Paul Holland
Antarctic sea ice is experiencing a weak overall increase in area that is the residual of opposing regional trends. This study considers their seasonal pattern. In addition to traditional ice…Factors controlling the last interglacial climate as simulated by LOVECLIM1.3
27 June, 2014 by Emilie Capron
The last interglacial (LIG), also identified to the Eemian in Europe, began at approximately 130 kyr BP and ended at about 115 kyr BP (before present). More and more proxy-based…Read more on Factors controlling the last interglacial climate as simulated by LOVECLIM1.3
How old is the ice beneath Dome A, Antarctica?
27 June, 2014 by Carlos Martin Garcia
Chinese scientists will start to drill a deep ice core at Kunlun station near Dome A in the near future. Recent work has predicted that Dome A is a location…Emperors in hiding: When ice-breakers and satellites complement each other in Antarctic exploration
25 June, 2014 by Philip Trathan, Peter Fretwell
Evaluating the demographic trends of marine top predators is critical to understanding the processes involved in the ongoing rapid changes in Antarctic ecosystems. However, the remoteness and logistical complexity of…A new bathymetric compilation for the South Orkney Islands, Antarctic Peninsula (49°-39°W to 64°-59°S): insights into the glacial development of the continental shelf
24 June, 2014 by Claus-Dieter Hillenbrand, James Smith, Philip Trathan, Robert Larter, William Dickens
We present a new, high resolution (300 m) bathymetric grid of the continental shelf surrounding the South Orkney Islands, northeast of the Antarctic Peninsula. The new grid, derived from a…Consistency of the current global ocean observing systems from an Argo perspective
24 June, 2014 by Jean-Baptiste Sallee
Variations in the world's ocean heat storage and its associated volume changes are a key factor to gauge global warming and to assess the Earth's energy budget. It is also…Read more on Consistency of the current global ocean observing systems from an Argo perspective
Sources of 21st century regional sea level rise along the coast of North-West Europe
19 June, 2014 by David Vaughan
Changes in both global and regional mean sea level, and changes in the magnitude of extreme flood heights, are the result of a combination of several distinct contributions most, but…Read more on Sources of 21st century regional sea level rise along the coast of North-West Europe
Millimeter-Sized Marine Plastics: A New Pelagic Habitat for Microorganisms and Invertebrates
18 June, 2014 by David Barnes
Millimeter-sized plastics are abundant in most marine surface waters, and known to carry fouling organisms that potentially play key roles in the fate and ecological impacts of plastic pollution. In…Cyclone-induced rapid creation of extreme Antarctic sea ice conditions
17 June, 2014 by John Turner
Two polar vessels, Akademik Shokalskiy and Xuelong, were trapped by thick sea ice in the Antarctic coastal region just to the west of 144°E and between 66.5°S and 67°S in…Read more on Cyclone-induced rapid creation of extreme Antarctic sea ice conditions
Climate-linked iceberg activity massively reduces spatial competition in Antarctic shallow waters
16 June, 2014 by David Barnes, Mairi Fenton
Life on Antarctica’s coastal seabed rollercoasters between food-rich, open-water, iceberg-scoured summers and food-sparse winters, when the sea surface freezes into ‘fast-ice’, locking up icebergs, reducing their seabed collisions (scouring). In…Climate variability features of the last interglacial in the East Antarctic EPICA Dome C ice core
16 June, 2014
Whereas millennial to sub-millennial climate variability has been identified during the current interglacial period, past interglacial variability features remain poorly explored because of lacking data at sufficient temporal resolutions. Here,…Similarity of organized patterns in driving and basal stresses of Antarctic and Greenland ice sheets beneath extensive areas of basal sliding
16 June, 2014 by Richard Hindmarsh, Richard Hindmarsh
The rate of ice transport from the interior of ice sheets to their margins, and hence the rate with which it contributes to sea level, is determined by the balance…The contribution of the Weddell Gyre to the lower limb of the global overturning circulation
14 June, 2014 by Hugh Venables, Michael Meredith, Paul Holland
The horizontal and vertical circulation of the Weddell Gyre is diagnosed using a box inverse model constructed with recent hydrographic sections and including mobile sea ice and eddy transports. The…A reversal of fortunes: climate change ‘winners’ and ‘losers’ in Antarctic Peninsula penguins
12 June, 2014 by Michael Dunn
Climate change is a major threat to global biodiversity. Antarctic ecosystems are no exception. Investigating past species responses to climatic events can distinguish natural from anthropogenic impacts. Climate change produces…Auroral spectral estimation with wide-band color mosaic CCDs
11 June, 2014 by Emma Woodfield
Color mosaic CCDs use a matrix of different wide-band micro-filters in order to produce images with several (often three) color channels. These devices are increasingly employed in auroral studies to…Read more on Auroral spectral estimation with wide-band color mosaic CCDs
Commonness and rarity in the marine biosphere
10 June, 2014 by Katrin Linse
Explaining patterns of commonness and rarity is fundamental for understanding and managing biodiversity. Consequently, a key test of biodiversity theory has been how well ecological models reproduce empirical distributions of…Investigating the insecticidal potential of Geomyces (Myxotrichaceae: Helotiales) and Mortierella (Mortierellacea: Mortierellales) isolated from Antarctica
9 June, 2014 by Kevin Hughes
Fungi isolated from environmentally challenging habitats can have adaptations of potential value when developed as insect pest-controls. Fungal isolates collected from Antarctica, Geomyces sp. I, Geomyces sp. II, Mortierella signyensis…An assessment of deep hot-water drilling as a means to undertake direct measurement and sampling of Antarctic subglacial lakes: experience and lessons learned from the Lake Ellsworth field season 2012/13
5 June, 2014 by Keith Makinson
In the early hours of 25 December 2012, an attempt to explore Subglacial Lake Ellsworth, West Antarctica, using a specially designed hot-water drill, was halted. This UK project, involving several…Freshwater fluxes in the Weddell Gyre: results from δ18O
2 June, 2014 by Hugh Venables, Michael Meredith, Paul Holland
Full-depth measurements of δ18O from 2008 to 2010 enclosing the Weddell Gyre in the Southern Ocean are used to investigate the regional freshwater budget. Using complementary salinity, nutrients and oxygen…Read more on Freshwater fluxes in the Weddell Gyre: results from δ18O
Ocean processes at the Antarctic continental slope
2 June, 2014 by Damien Guihen, Sophie Fielding
The Antarctic continental shelves and slopes occupy relatively small areas, but, nevertheless, are important for global climate, biogeochemical cycling and ecosystem functioning. Processes of water mass transformation through sea ice…Read more on Ocean processes at the Antarctic continental slope
The Southern Ocean in the Coupled Model Intercomparison Project phase 5
2 June, 2014 by Andrew Meijers
The Southern Ocean is an important part of the global climate system, but its complex coupled nature makes both its present state and its response to projected future climate forcing…Read more on The Southern Ocean in the Coupled Model Intercomparison Project phase 5
Dense waters of the Weddell and Scotia Seas: recent changes in properties and circulation
2 June, 2014 by Michael Meredith
The densest waters in the Atlantic overturning circulation are sourced at the periphery of Antarctica, especially the Weddell Sea, and flow northward via routes that involve crossing the complex bathymetry…Ice Sheets and the Anthropocene
2 June, 2014 by Eric Wolff
Ice could play a role in identifying and defining the Anthropocene. The recurrence of northern hemisphere glaciation and the stability of the Greenland Ice Sheet are both potentially vulnerable to…Diversity, abundance and composition in macrofaunal molluscs from the Ross Sea (Antarctica): results of fine-mesh sampling along a latitudinal gradient
1 June, 2014 by Huw Griffiths, Katrin Linse
The Latitudinal Gradient Program (2002–2011) aimed at understanding the marine and terrestrial ecosystems existing along the Victoria Land coast (Ross Sea), an area characterized by strong latitudinal clines in environmental…Aspects of the Antarctic Circumpolar Current dynamics investigated with drifter data
1 June, 2014 by Jean-Baptiste Sallee
Interactions between eddies and mean flow are essential to close the momentum budget of the Southern Ocean, as well as to determine the structure of the global meridional overturning circulation.…Read more on Aspects of the Antarctic Circumpolar Current dynamics investigated with drifter data
Antarctic climate change and the environment: an update
1 June, 2014 by Adrian Jenkins, Dominic Hodgson, Gareth Marshall, Howard Roscoe, Jonathan Shanklin, John Turner, Michael Meredith, Peter Convey, Thomas Bracegirdle
We present an update of the ‘key points’ from the Antarctic Climate Change and the Environment (ACCE) report that was published by the Scientific Committee on Antarctic Research (SCAR) in…Read more on Antarctic climate change and the environment: an update
Deep sequencing of the mantle transcriptome of the great scallop Pecten maximus
1 June, 2014 by Lloyd Peck, Michael Thorne, Melody Clark
RNA-Seq transcriptome data were generated from mantle tissue of the great scallop, Pecten maximus. The consensus data were produced from a time course series of animals subjected to a 56-day…Read more on Deep sequencing of the mantle transcriptome of the great scallop Pecten maximus
Sardine cycles, krill declines, and locust plagues: revisiting ‘wasp-waist’ food webs
1 June, 2014 by Simeon Hill
‘Wasp-waist’ systems are dominated by a mid trophic-level species that is thought to exert top-down control on its food and bottom-up control on its predators. Sardines, anchovy, and Antarctic krill…Read more on Sardine cycles, krill declines, and locust plagues: revisiting ‘wasp-waist’ food webs
Ecology and distribution of the grey notothen, Lepidonotothen squamifrons, around South Georgia and Shag Rocks, Southern Ocean
1 June, 2014 by Mark Belchier, Susan Gregory
New information on the biology and ecology of an abundant ‘rockcod’ species, Lepidonotothen squamifrons (family: Nototheniidae), found at South Georgia is presented. Data collected from twenty demersal trawl surveys carried…An assessment of the use of ocean gliders to undertake acoustic measurements of zooplankton: the distribution and density of Antarctic krill (Euphausia superba) in the Weddell Sea
1 June, 2014 by Damien Guihen, Eugene Murphy, Sophie Fielding
A calibrated 120 kHz single-beam echo-sounder was integrated into an ocean glider and deployed in the Weddell Sea, Southern Ocean. The glider was deployed for two short periods in January…Constraining past accumulation in the central Pine Island Glacier basin, West Antarctica, using radio-echo sounding
1 June, 2014 by David Vaughan, Hugh Corr, Richard Hindmarsh, Richard Hindmarsh
The potential for future dynamical instability of Pine Island Glacier, West Antarctica, has been addressed in a number of studies, but information on its past remains limited. In this study…Geographic isolation and physiological mechanisms underpinning species distributions at the range limit hotspot of South Georgia
1 June, 2014 by Chester Sands, David Barnes, Lloyd Peck, Mark Belchier, Simon Morley
In order to allocate quotas for sustainable harvests, that account for climate warming, it is important to incorporate species vulnerabilities that will underlie likely changes in population dynamics. Hotspots, regions…Resource partitioning between incubating and chick-rearing brown boobies and red-tailed tropicbirds on Christmas Island
1 June, 2014 by Rocio Moreno
Background: In oligotrophic tropical marine environments, the main mechanism explaining the coexistence of sympatric seabirds is segregation by habitat or segregation by prey within the same habitat. Both types of…Interaction strengths in balanced carbon cycles and the absence of a relation between ecosystem complexity and stability
1 June, 2014 by Anje-Margriet Neutel, Michael Thorne
The strength of interactions is crucial to the stability of ecological networks. However, the patterns of interaction strengths in mathematical models of ecosystems have not yet been based upon independent…The SOOS Asian Workshop: Exploring possibilities for collaboration
1 June, 2014 by Michael Meredith
The first Southern Ocean Observing System (SOOS) Asian Workshop was successfully held in Shanghai, China in May 2013, attracting over 40 participants from six Asian nations and widening exposure to…Read more on The SOOS Asian Workshop: Exploring possibilities for collaboration
Diving capabilities of diving petrels
1 June, 2014 by Richard Phillips
In striking contrast to the general increase in diving ability with body mass in seabirds, amongst the Procellariiformes, the deepest dives appear to be by the smallest species. Here, we…The trophodynamics of Southern Ocean Electrona (Myctophidae) in the Scotia Sea
1 June, 2014 by Geraint Tarling, Gabriele Stowasser, Peter Ward, Ryan Saunders
The Scotia Sea is one of the most productive regions of the Southern Ocean, but its surface waters are experiencing a rapid increase in temperature, which may be changing the…Read more on The trophodynamics of Southern Ocean Electrona (Myctophidae) in the Scotia Sea
The importance of geomagnetic field changes versus rising CO2 levels for long-term change in the upper atmosphere
22 May, 2014 by Ingrid Cnossen
The Earth’s upper atmosphere has shown signs of cooling and contraction over the past decades. This is generally attributed to the increasing level of atmospheric CO2, a coolant in the…Contrasting strategies of resistance vs. tolerance to desiccation in two polar dipterans
22 May, 2014 by Roger Worland, Peter Convey
Low water availability is one of the principal stressors for terrestrial invertebrates in the polar regions, determining the survival of individuals, the success of species and the composition of communities.…Sea salt as an ice core proxy for past sea ice extent: a process-based model study
19 May, 2014 by Anna Jones, Eric Wolff
Sea ice is a reflection of, and a feedback on the Earth's climate. We explore here, using a global atmospheric chemistry-transport model, the use of sea salt in Antarctic ice…Read more on Sea salt as an ice core proxy for past sea ice extent: a process-based model study
Subduction-modified oceanic crust mixed with a depleted mantle reservoir in the sources of the Karoo continental flood basalt province
15 May, 2014 by Teal Riley
The great majority of continental flood basalts (CFBs) have a marked lithospheric geochemical signature, suggesting derivation from the continental lithosphere, or contamination by it. Here we present new Pb and…Neodymium and hafnium boundary contributions to seawater along the West Antarctic continental margin
15 May, 2014 by Claus-Dieter Hillenbrand
Neodymium and hafnium isotopes and elemental concentrations (Sm, Nd, Hf, Zr) have been measured in three water column profiles south of the Antarctic Circumpolar Current in, and to the east…Alien invasions in Antarctica – is anyone liable?
14 May, 2014 by Kevin Hughes, Peter Convey
The introduction of non-native species to Antarctica in association with human activities is a major threat to indigenous biodiversity and the region's unique ecosystems, as has been well-demonstrated in other…Read more on Alien invasions in Antarctica – is anyone liable?
Post-fledging dispersal of King Penguins (Aptenodytes patagonicus) from two breeding sites in the South Atlantic
14 May, 2014 by Martin Collins, Philip Trathan
Most studies concerning the foraging ecology of marine vertebrates are limited to breeding adults, although other life history stages might comprise half the total population. For penguins, little is known…Retreat of the West Antarctic Ice Sheet from the western Amundsen Sea shelf at a pre- or early LGM stage
1 May, 2014 by Claus-Dieter Hillenbrand, James Smith, Robert Larter
Recent palaeoglaciological studies on the West Antarctic shelf have mainly focused on the wide embayments of the Ross and Amundsen seas in order to reconstruct the extent and subsequent retreat…A statistical approach to determining energetic outer radiation-belt electron precipitation fluxes
1 May, 2014 by Mark Clilverd, Neil Cobbett, Paul Breen
Sub-ionospheric radio-wave data from an AARDDVARK receiver located in Churchill, Canada, is analysed to determine the characteristics of electron precipitation into the atmosphere over the range 3 30 keV precipitation fluxes of…The spatial structure of Antarctic biodiversity
1 May, 2014 by Andrew Clarke, David Barnes, Huw Griffiths, Lloyd Peck, Peter Convey, Simon Morley
Patterns of environmental spatial structure lie at the heart of the most fundamental and familiar patterns of diversity on Earth. Antarctica contains some of the strongest environmental gradients on the…Read more on The spatial structure of Antarctic biodiversity
Genetic Diversity of Antarctic Fish
1 May, 2014 by Elaine Fitzcharles
Correct species identification is fundamental to all areas of biology, but particularly the policy related areas of conservation and fisheries management. To enable guidelines to be developed for environmental management…Morphological and molecular characterization of salps (Thalia spp.) from the Tristan da Cunha archipelago
1 May, 2014 by Will Goodall-Copestake
The identification of salp species by morphological features alone can be challenging. This study combined morphological and molecular approaches to characterize different salp reproductive forms (oozooids and blastozooids) collected from…Modelled trends in Antarctic sea ice thickness
1 May, 2014 by Paul Holland
Unlike the rapid sea-ice losses reported in the Arctic, satellite observations show an overall increase in Antarctic sea ice concentration over recent decades. However, observations of decadal trends in Antarctic…Characterisation of vertical BrO distribution during events of enhanced tropospheric BrO in Antarctica, from combined remote and in-situ measurements
1 May, 2014 by Anna Jones, Howard Roscoe, Neil Brough
Tropospheric BrO was measured by a ground-based remote-sensing spectrometer at Halley in Antarctica in spring 2007, and BrO was measured by satellite-borne remote-sensing spectrometers using similar spectral regions and similar…Instantaneous movement of krill swarms in the Antarctic Circumpolar Current
1 May, 2014 by Geraint Tarling, Sally Thorpe
Antarctic krill are known to have strong swimming capabilities, but direct observations of the speed and direction of krill-swarm movement within their natural environment are rare. We identified and examined…Read more on Instantaneous movement of krill swarms in the Antarctic Circumpolar Current
The origin of Jupiter’s outer radiation belt
1 May, 2014 by Emma Woodfield, Richard Horne, Sarah Glauert
The intense inner radiation belt at Jupiter (>50 MeV at 1.5 RJ) is generally accepted to be created by radial diffusion of electrons from further away from the planet. However,…Individual consistency in migratory behaviour of a pelagic seabird
1 May, 2014 by Philip Trathan
Many animals migrate between breeding and wintering areas; however, whether each animal behaves consistently in space and time between consecutive years is less well understood. Furthermore, previous breeding state (successful…Read more on Individual consistency in migratory behaviour of a pelagic seabird
NGRIP CH4 concentration from 120 to 10 kyr before present and its relation to a δ15N temperature reconstruction from the same ice core
30 April, 2014 by Emilie Capron
During the last glacial cycle, Greenland temperature showed many rapid temperature variations, the so called Dansgaard-Oeschger (DO) events. The past atmospheric methane concentration closely followed these temperature variations, which implies…Sea ice and the ocean mixed layer over the Antarctic shelf seas
29 April, 2014 by Paul Holland
An ocean mixed-layer model has been incorporated into the Los Alamos sea ice model CICE to investigate regional variations in the surface-driven formation of Antarctic shelf waters. This model captures…Read more on Sea ice and the ocean mixed layer over the Antarctic shelf seas
Electromagnetic ion cyclotron wave modeling during the geospace environment modeling challenge event
28 April, 2014 by Richard Horne
We investigate the temporal evolution and the spatial distribution of electromagnetic ion cyclotron (EMIC) waves during the 8–11 June 2001 geomagnetic storm, one of the storms selected for study by…The mitochondrial genome of the antarctic springtail Folsomotoma octooculata (Hexapoda; Collembola), and an update on the phylogeny of collembolan lineages based on mitogenomic data
24 April, 2014 by Peter Convey
This study provides the description of the complete mitochondrial genome of the Antarctic collembola Folsomotoma octooculata. Since mitogenomic data are extensively used for phylogenetic reconstruction, we also provide a phylogenetic…Energetic particle forcing of the Northern Hemisphere winter stratosphere: comparison to solar irradiance forcing
24 April, 2014 by Mark Clilverd
Variation in solar irradiance is considered an important factor in natural climate forcing. Variations in the solar UV in particular are now regarded as a major source of decadal variability…Marine ice regulates the future stability of a large Antarctic ice shelf
22 April, 2014 by Ed King
The collapses of the Larsen A and B ice shelves on the Antarctic Peninsula in 1995 and 2002 confirm the impact of southward-propagating climate warming in this region. Recent mass…Read more on Marine ice regulates the future stability of a large Antarctic ice shelf
The effect of geometry on ice shelf ocean cavity ventilation: a laboratory experiment
20 April, 2014 by Adrian Jenkins, Paul Holland
A laboratory experiment is constructed to simulate the density-driven circulation under an idealized Antarctic ice shelf and to investigate the flux of dense and freshwater in and out of the…Read more on The effect of geometry on ice shelf ocean cavity ventilation: a laboratory experiment