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Diurnal cycle of coastal anthropogenic pollutant transport over southern West Africa during the DACCIWA campaign
14 January, 2019
During the monsoon season, pollutants emitted by large coastal cities and biomass burning plumes originating from Central Africa have complex transport pathways over Southern West Africa (SWA). The Dynamics–Aerosol–Chemistry–Cloud–Interactions in…Respiration rates and active carbon flux of mesopelagic fishes (Family Myctophidae) in the Scotia Sea, Southern Ocean
7 January, 2019 by Anna Belcher, Geraint Tarling, Ryan Saunders
Mesopelagic fish have recently been highlighted as an important, but poorly studied component of marine ecosystems, particularly regarding their role in the marine pelagic food webs and biogeochemical cycles. Myctophids…Utility of salps as a baseline proxy for food web studies
4 January, 2019 by Gabriele Stowasser
In recent years, pelagic tunicates (mostly salps, but potentially doliolids, appendicularians and pyrosomes as well) have been used in isotopic studies as a baseline consumer (trophic position 2) when recreating…Read more on Utility of salps as a baseline proxy for food web studies
ESD Ideas: Photoelectrochemical carbon removal as negative emission technology
4 January, 2019 by Kira Rehfeld
The pace of the transition to a low-carbon economy – especially in the fuels sector – is not high enough to achieve the 2 ∘C target limit for global warming by…Read more on ESD Ideas: Photoelectrochemical carbon removal as negative emission technology
A long-term study of gentoo penguin (Pygoscelis papua) population trends at a major Antarctic tourist site, Goudier Island, Port Lockroy
1 January, 2019 by Claire Waluda, Jennifer Jackson, Jaume Forcada, Michael Dunn, Philip Trathan
Gentoo penguins Pygoscelis papua breed at a number of sites at the West Antarctic Peninsula, including Goudier Island, Port Lockroy—the longest studied location for tourist-penguin interactions in the Antarctic. These…Life cycle and phenology of an Antarctic invader – the flightless chironomid midge, Eretmoptera murphyi
1 January, 2019 by Peter Convey
Knowledge of the life cycles of non-native species in Antarctica is key to understanding their ability to establish and spread to new regions. Through laboratory studies and field observations on…Using habitat models to identify marine important bird and biodiversity areas for Chinstrap Penguins Pygoscelis antarcticus in the South Orkney Islands
1 January, 2019 by Harriet Clewlow, Norman Ratcliffe, Philip Trathan, Victoria Warwick-Evans
Tracking individual marine predators can provide vital information to aid the identification of important activity (foraging, commuting, rafting, resting, etc.) hotspots and therefore also to delineate priority sites for conservation.…Condition of pteropod shells near a volcanic CO2 vent region
1 January, 2019 by Clara Manno
Natural gradients of pH in the ocean are useful analogues for studying the projected impacts of Ocean Acidification (OA) on marine ecosystems. Here we document the in situ impact of…Read more on Condition of pteropod shells near a volcanic CO2 vent region
The development of a space climatology: 3. Models of the evolution of distributions of space weather variables with timescale
1 January, 2019 by Mervyn Freeman
We study how the probability distribution functions of power input to the magnetosphere Pα and of the geomagnetic ap and Dst indices vary with averaging timescale, τ, between 3 hours…Divergent foraging strategies during incubation of an unusually wide-ranging seabird, the Murphy’s petrel
1 January, 2019 by Richard Phillips, Thomas Clay, Thomas Clay
Divergent foraging strategies may emerge within a population due to a combination of physiological and environmental factors; yet to persist, neither strategy should offer a consistent selective advantage over the…Increased snowfall over the Antarctic Ice Sheet mitigated twentieth-century sea-level rise
1 January, 2019 by Liz Thomas
Changes in accumulated snowfall over the Antarctic Ice Sheet have an immediate and time-delayed impact on global mean sea level. The immediate impact is due to the instantaneous change in…Contrasting hydrological controls on bed properties during the acceleration of Pine Island Glacier, West Antarctica
1 January, 2019 by Alex Brisbourne, Andy Smith, David Vaughan
In the Amundsen sector of West Antarctica, the flow of glaciers accelerates when intrusion of warm ocean water onto the continental shelf induces strong melting beneath ice shelves and thinning…Propagation and vertical structure of the tidal flow in Nares Strait
1 January, 2019 by Peter Davis
The southward freshwater flux though Nares Strait is an important component of the Arctic's freshwater budget. On short time scales, flow through the strait is dominated by the tides, and…Read more on Propagation and vertical structure of the tidal flow in Nares Strait
D-region high latitude forcing factors
1 January, 2019 by David Newnham, Mark Clilverd, Tracy Moffat-Griffin
The subionospheric very low frequency (VLF) radio wave technique provides the possibility of investigating the response of the ionospheric D‐region to a diversity of transient and long‐term physical phenomena originating…Physical conditions of fast glacier flow: 3. Seasonally-evolving ice deformation on Store Glacier, West Greenland
1 January, 2019 by Keith Nicholls, Tun Jan Young
Temporal variations in ice sheet flow directly impact the internal structure within ice sheets through englacial deformation. Large‐scale changes in the vertical stratigraphy within ice sheets have been previously conducted…Evaluation of mumiyo deposits from East Antarctica as archives for the Late Quaternary environmental and climatic history
1 January, 2019 by Dominic Hodgson
Mumiyo deposits form in the vicinity of snow petrel (Pagodroma nivea) nesting sites and consist of fossil stomach oil (mumiyo), guano, and minerogenic material. Here we evaluate mumiyo deposits from…A horizon scan of emerging issues for global conservation in 2019
1 January, 2019 by Lloyd Peck
We present the results of our tenth annual horizon scan. We identified 15 emerging priority topics that may have major positive or negative effects on the future conservation of global…Read more on A horizon scan of emerging issues for global conservation in 2019
Segregation in space and time explains the coexistence of two sympatric sub-Antarctic petrels
1 January, 2019 by Richard Phillips
Biological communities are shaped by competition between and within species. Competition is often reduced by inter- and intraspecific specialization on resources, such as differencet foraging areas or time, allowing similar…Experimental validation of in silico predicted RAD locus frequencies using genomic resources and short read data from a model marine mammal
1 January, 2019 by Jaume Forcada
Background Restriction site-associated DNA sequencing (RADseq) has revolutionized the study of wild organisms by allowing cost-effective genotyping of thousands of loci. However, for species lacking reference genomes, it can be…Metapopulation dynamics of roseate terns: Sources, sinks and implications for conservation management decisions
1 January, 2019 by Norman Ratcliffe
Habitat management to restore or create breeding sites may allow metapopulations to increase in size and reduce the risk of demographic stochasticity or disasters causing metapopulation extinction. However, if newly…Adaptation of proteins to the cold in Antarctic fish: A role for Methionine?
1 January, 2019 by Lloyd Peck, Melody Clark
The evolution of antifreeze glycoproteins has enabled notothenioid fish to flourish in the freezing waters of the Southern Ocean.Whereas successful at the biodiversity level to life in the cold, paradoxically…Read more on Adaptation of proteins to the cold in Antarctic fish: A role for Methionine?
The EU-PolarNet White Papers
1 January, 2019 by David Vaughan
Constraining recent ice flow history at Korff Ice Rise, West Antarctica, using radar and seismic measurements of ice fabric
1 January, 2019 by Alex Brisbourne, Andy Smith, Carlos Martin Garcia
The crystal orientation fabric of ice reflects its flow history, information which is required to better constrain projections of future ice sheet behavior. Here we present a novel combination of…Acute oil exposure reduces physiological process rates in Arctic phyto- and zooplankton
1 January, 2019 by Jakob Thyrring
Arctic shipping and oil exploration are expected to increase, as sea ice extent is reduced. This enhances the risk for accidental oil spills throughout the Arctic, which emphasises the need…Read more on Acute oil exposure reduces physiological process rates in Arctic phyto- and zooplankton
The development of a space climatology: 2. The distribution of power input into the magnetosphere on a 3‐hourly timescale
1 January, 2019 by Mervyn Freeman
Paper 1 in this series (Lockwood et al., 2018a, https://doi.org/10.1029/2018SW001856) showed that the power input into the magnetosphere Pα is an ideal coupling function for predicting geomagnetic “range” indices that…Carbon storage by Kerguelen zoobenthos as a negative feedback on climate change.
1 January, 2019 by Chester Sands, David Barnes
As oceans warm, reducing the extent of sea-ice and-ice shelves, increased carbon capture by phytoplankton and storage by southern polar benthos (sea bed organisms), is potentially the largest negative feedback…Read more on Carbon storage by Kerguelen zoobenthos as a negative feedback on climate change.
Evaluating northern high-latitude paleoclimate model results using paleobotanical evidence from the Middle Cretaceous
1 January, 2019 by Jane Francis
Climate plays a significant role in determining the styles of depositional processes at different latitudes, which in turn influence the locations of hydrocarbon systems. Results of climate modeling may therefore…Report from the Expert Panel on the evaluation of the VRZs during the 2018/19 fishing season
1 January, 2019 by Simeon Hill
In July 2018 ARK (the Association of Responsible Krill harvesting companies) launched a set of voluntary measures, known as ARK’s Commitment, which were proposed to improve the long-term sustainability of…Three new seabird species recorded at Tristan da Cunha archipelago.
1 January, 2019 by Norman Ratcliffe
The Tristan da Cunha archipelago comprises three main islands: Tristan, Inaccessible and Nightingale at 37ºS 12ºW, with Gough Island (40ºS 10ºW) the only other temperate oceanic island in the South…Read more on Three new seabird species recorded at Tristan da Cunha archipelago.
Current logistical capacity is sufficient to deliver the implementation and management of a representative Antarctic protected area system
5 December, 2018 by Kevin Hughes, Susie Grant
Antarctica’s terrestrial ecosystems are vulnerable to impacts resulting from climate change and local human activities. The Antarctic Treaty System (ATS) provides for the designation of protected areas through the Protocol…Characterisation of Pseudanabaena amphigranulata (Synechococcales) isolated from a man-made pond, Malaysia: A polyphasic approach
1 December, 2018 by Peter Convey
A filamentous benthic cyanobacteria strain isolated from a tropical man-made pond in Malaysia was characterised using combined phenotypic and genetic approaches. Morphological and ultrastructural observations were performed together with growth…Ontogenic changes in habitat and trophic ecology in the Antarctic squid Kondakovia longimana derived from isotopic analysis on beaks
1 December, 2018
The life histories of cephalopods are still not well described. Stable isotopic analysis of cephalopod beaks is an effective method to study the habitat and trophic ecology of this group…Using habitat models for chinstrap penguins Pygoscelis antarctica to advise krill fisheries management during the penguin breeding season
1 December, 2018 by Harriet Clewlow, Louise Ireland, Norman Ratcliffe, Philip Trathan, Victoria Warwick-Evans
Aim: To predict the at-sea distribution of chinstrap penguins across the South Orkney Islands and to quantify the overlap with the Southern Ocean krill fishery. Location: South Orkney Islands, Antarctica.…Competition between co-occurring invasive and native consumers switches between habitats
1 December, 2018 by Nadescha Zwerschke
1.The introduction of a non‐native species frequently has adverse direct effects on native species. The underlying mechanisms, however, often remain unclear, in particular where native and invasive species are taxonomically…Persistent Organic Pollutants in two species of migratory birds from Rothera Point, Adelaide Island, Antarctica
1 December, 2018 by Lloyd Peck
Carcasses of South Polar Skuas (Catharacta maccormicki) and Kelp gulls (Larus dominicanus) were opportunistically collected around of Rothera Research station (67°35′8″S and 68°7′59″W) during the 2016/2017 austral summer. Samples of…Comparative population genomics reveals key barriers to dispersal in Southern Ocean penguins
1 December, 2018 by Michael Dunn, Richard Phillips
The mechanisms that determine patterns of species dispersal are important factors in the production and maintenance of biodiversity. Understanding these mechanisms helps to forecast the responses of species to environmental…Spatial scales of marine conservation management for breeding seabirds
1 December, 2018 by Michael Dunn, Norman Ratcliffe, Philip Trathan, Richard Phillips
Knowing the spatial scales at which effective management can be implemented is fundamental for conservation planning. This is especially important for mobile species, which can be exposed to threats across…Read more on Spatial scales of marine conservation management for breeding seabirds
Ice-rise stratigraphy reveals changes in surface mass balance over the last millennia in Dronning Maud Land
1 December, 2018 by Carlos Martin Garcia
We use ice flow modelling to simulate the englacial stratigraphy of Blåskimen Island, an ice rise in Dronning Maud Land and elucidate the evolution of this data-sparse region. We apply…Spatially coherent late Holocene Antarctic Peninsula surface air temperature variability
1 December, 2018 by Dominic Hodgson, Peter Convey
The Antarctic Peninsula experienced a rapid rise in regional temperature during the second half of the 20th century, but the regional pattern of multi-centennial temperature changes and their dynamical drivers…Interconnectivity between volume transports through Arctic straits
1 December, 2018 by Louise Sime
Arctic heat and freshwater budgets are highly sensitive to volume transports through the Arctic‐Subarctic straits. Here we study the interconnectivity of volume transports through Arctic straits in three models; two…Read more on Interconnectivity between volume transports through Arctic straits
Holocene fire activity during low-natural flammability periods reveals scale-dependent cultural human-fire relationships in Europe
1 December, 2018 by Kira Rehfeld
Fire is a natural component of global biogeochemical cycles and closely related to changes in human land use. Whereas climate-fuel relationships seem to drive both global and subcontinental fire regimes,…Prototype wireless sensors for monitoring subsurface processes in snow and firn
1 December, 2018 by Hugh Corr, Keith Nicholls
The detection and monitoring of meltwater within firn presents a significant monitoring challenge. We explore the potential of small wireless sensors (ETracer+, ET+) to measure temperature, pressure, electrical conductivity and…Read more on Prototype wireless sensors for monitoring subsurface processes in snow and firn
Polar climate change as manifest in atmospheric circulation
1 December, 2018 by Thomas Bracegirdle
Purpose of Review Dynamic manifestations of climate change, i.e. those related to circulation, are less well understood than are thermodynamic, or temperature-related aspects. However, this knowledge gap is narrowing. We…Read more on Polar climate change as manifest in atmospheric circulation
Soil fungal responses to warming in polar regions
1 December, 2018 by Marta Misiak
Polar regions are subjected to rapid climate change, with increased air temperatures and precipitation being predicted during future decades. Rising temperatures and precipitation will have an effect on saprotrophic soil…Read more on Soil fungal responses to warming in polar regions
Contrasting phylogeographic pattern among Eudyptes penguins around the Southern Ocean
30 November, 2018 by Philip Trathan
Since at least the middle-Miocene, the Antarctic Polar Front (APF) and the Subtropical Front (STF) appear to have been the main drivers of diversification of marine biota in the Southern…Read more on Contrasting phylogeographic pattern among Eudyptes penguins around the Southern Ocean
Formation of electron radiation belts at Saturn by Z-mode wave acceleration
29 November, 2018 by Emma Woodfield, Richard Horne, Sarah Glauert
At Saturn electrons are trapped in the planet’s magnetic field and accelerated to relativistic energies to form the radiation belts, but how this dramatic increase in electron energy occurs is…Read more on Formation of electron radiation belts at Saturn by Z-mode wave acceleration
Supraglacial debris thickness variability: impact on ablation and relation to terrain properties
29 November, 2018 by Michael McCarthy, Hamish Pritchard, Michael McCarthy
Shallow ground-penetrating radar (GPR) surveys are used to characterize the small-scale spatial variability of supraglacial debris thickness on a Himalayan glacier. Debris thickness varies widely over short spatial scales. Comparison…Ecological niches and geographic distributions of lanternfishes
28 November, 2018
Lanternfishes (Myctophidae) dominate fish diversity and biomass within the mesopelagic ocean between 200-1000m deep. In the face of exploitation and climate change there is a need to predict their current…Read more on Ecological niches and geographic distributions of lanternfishes
Characterization of a novel N-acylhomoserine lactonase, AidP, from Antarctic Planococcus sp.
17 November, 2018 by David Pearce, Peter Convey
N-acylhomoserine lactones (AHLs) are well-studied signalling molecules produced by some Gram-negative Proteobacteria for bacterial cell-to-cell communication or quorum sensing. We have previously demonstrated the degradation of AHLs by an Antarctic…Seasonal prey switching in non-breeding gentoo penguins related to a wintertime environmental anomaly around South Georgia
16 November, 2018 by Geraint Tarling, Norman Ratcliffe, Philip Trathan
Information is needed on how anomalous environmental conditions affect important Antarctic ecological sentinels during the winter. Using a non-invasive method (scats), the diet of non-breeding gentoo penguins Pygoscelis papua at…Simulating the 128 ka Antarctic climate response to Northern Hemisphere ice sheet melting using the isotope-enabled HadCM3
16 November, 2018 by Louise Sime, Max Holloway
Warmer than present Antarctic and Southern Ocean temperatures during the last interglacial, approximately 128,000 years ago, have been attributed to changes in north‐south ocean heat transport, causing opposing hemispheric temperature…Demographic histories and genetic diversity across pinnipeds are shaped by human exploitation, ecology and life-history
16 November, 2018
A central paradigm in conservation biology is that population bottlenecks reduce genetic diversity and population viability. In an era of biodiversity loss and climate change, understanding the determinants and consequences…Anomalously high geothermal flux near the South Pole
15 November, 2018 by Carlos Martin Garcia, Fausto Ferraccioli, Hugh Corr, Tom Jordan
Melting at the base of the Antarctic Ice Sheet influences ice dynamics and our ability to recover ancient climatic records from deep ice cores. Basal melt rates are affected by…Read more on Anomalously high geothermal flux near the South Pole
Variability in basal melting beneath Pine Island Ice Shelf on weekly to monthly timescales
14 November, 2018 by Adrian Jenkins, Povl Abrahamsen, Keith Nicholls, Peter Davis
Ocean‐driven basal melting of Amundsen Sea ice shelves has triggered acceleration, thinning, and grounding line retreat on many West Antarctic outlet glaciers. Here we present the first year‐long (2014) record…Dynamical drivers of the local wind regime in a Himalayan valley
12 November, 2018 by Andrew Orr, Emily Potter
Understanding the local valley wind regimes in the Hindu‐Kush Karakoram Himalaya is vital for future predictions of the glacio‐hydro‐meteorological system. Here the Weather Research and Forecasting model is employed at…Read more on Dynamical drivers of the local wind regime in a Himalayan valley
Basal freeze-on generates complex ice-sheet stratigraphy
7 November, 2018 by Carlos Martin Garcia, Richard Hindmarsh, Richard Hindmarsh
Large, plume-like internal ice-layer-structures have been observed in radar images from both Antarctica and Greenland, rising from the ice-sheet base to up to half of the ice thickness. Their origins…Read more on Basal freeze-on generates complex ice-sheet stratigraphy
Earth tectonics as seen by GOCE – Enhanced satellite gravity gradient imaging
5 November, 2018 by Fausto Ferraccioli
Curvature components derived from satellite gravity gradients provide new global views of Earth’s structure. The satellite gravity gradients are based on the GOCE satellite mission and we illustrate by curvature…Read more on Earth tectonics as seen by GOCE – Enhanced satellite gravity gradient imaging
The climate of the Antarctic Peninsula during the 20th century- evidence from ice cores
5 November, 2018 by Dieter Tetzner, Liz Thomas
The Antarctic Peninsula (AP) is a region of special climatological interest. The late twentieth century has been a period of warming surface temperatures, enhanced mass loss from melting glaciers and…Read more on The climate of the Antarctic Peninsula during the 20th century- evidence from ice cores
Blue carbon on polar and subpolar seabeds
5 November, 2018 by David Barnes
When marine organisms eat and grow they capture and store carbon, termed blue carbon. Polar seas have extreme light climates and sea temperatures. Their continental shelves have amongst the most…Threatened species drive the strength of the carbonate pump in the northern Scotia Sea
2 November, 2018 by Clara Manno, Geraint Tarling, Gabriele Stowasser, Peter Enderlein, Sophie Fielding
The efficiency of deep-ocean CO2 sequestration is regulated by the relative balance between inorganic and organic carbon export respectively acting through the biological carbon pump (BCP) and the carbonate counter…Read more on Threatened species drive the strength of the carbonate pump in the northern Scotia Sea
IMF-driven change to the Antarctic tropospheric temperature due to the global atmospheric electric circuit
1 November, 2018 by Gareth Chisham, Mai Mai Lam, Mervyn Freeman
We use National Centers for Environmental Prediction (NCEP)/National Center for Atmospheric Research (NCAR) reanalysis data to investigate the Antarctic mean tropospheric temperature anomaly associated with changes in the dawn-dusk component…Conventional and molecular analysis of the diet of gentoo penguins: contributions to assess scats for non-invasive penguin diet monitoring
1 November, 2018 by Norman Ratcliffe, Philip Trathan
There is a growing search for less invasive methods while studying the diet of Antarctic animals in the wild. Therefore, we compared the diet of gentoo penguins from stomach contents…Minimising the limitations of using dietary analysis to assess foodweb changes by combining multiple techniques
1 November, 2018 by Catharine Horswill, Jennifer Jackson, Philip Trathan
Dietary studies of marine predators offer an immediate signal of foodweb changes occurring at lower trophic levels, and therefore are often used to assess the ecosystem status of marine systems.…Temporal changes in abundances of large calanoid copepods in the Scotia Sea: comparing the 1930s with contemporary times
1 November, 2018 by Geraint Tarling, Peter Ward, Sally Thorpe
To investigate whether impacts of reported climate change in the Antarctic marine environment have affected mesozooplankton populations, we compared the summertime abundances of four species of large calanoid copepods from…The relationship between coastal weather and foraging behaviour of chinstrap penguins, Pygoscelis antarctica
1 November, 2018 by Philip Trathan
There is increasing interest in using higher-trophic level predators as ecosystem indicators because their performance is presumed to be linked to the overall function of the ecosystem that supports them.…A 2000-year record of ocean influence on Jakobshavn Isbræ calving activity, based on marine sediment cores
1 November, 2018 by Kelly Hogan
The Greenland Ice Sheet has experienced significant mass loss in recent years. A substantial component of this is attributable to the retreat of marine-terminating outlet glaciers, which lose mass through…Habitat use of adult male South American fur seals and a preliminary assessment of spatial overlap with trawl fisheries in the South Atlantic
1 November, 2018 by Iain Staniland
Little is known about the movement ecology of male South American fur seals (SAFS; Arctocephalus australis). To begin to address knowledge gaps we used satellite telemetry to track four adult…Seasonal variation in the predatory impact of myctophids on zooplankton in the Scotia Sea (Southern Ocean)
1 November, 2018 by Geraint Tarling, Gabriele Stowasser, Peter Ward, Ryan Saunders, Simeon Hill
Myctophids are the biomass-dominant mesopelagic fishes in the Southern Ocean, but their trophic role within the pelagic food web south of the Antarctic Polar Front is poorly resolved from a…Statistical analysis of the oceanic magnetic anomaly data
1 November, 2018 by Fausto Ferraccioli
The study of the statistical properties of ocean magnetic anomalies could be very important to obtain new understanding on plate tectonics, especially about the past properties of the lithospheric oceanic…Read more on Statistical analysis of the oceanic magnetic anomaly data
Identification of marine important bird and biodiversity areas for penguins around the South Shetland Islands and South Orkney Islands
1 November, 2018 by Harriet Clewlow, Norman Ratcliffe, Philip Trathan, Victoria Warwick-Evans
Aim: To provide a method of analyzing penguin tracking data to identify priority at-sea areas for seabird conservation (marine IBAs), based on pre-existing approaches for flying seabirds but revised according…Combined bottom-up and top-down pressures drive catastrophic population declines of Arctic skuas in Scotland
1 November, 2018 by Norman Ratcliffe
1.Understanding drivers of population change is critical for effective species conservation. In the northeast Atlantic Ocean, recent changes amongst seabird communities are linked to human and climate change impacts on…Quiet daytime Arctic ionospheric D region
1 November, 2018 by Mark Clilverd
Phase and amplitude measurements of VLF radio waves propagating sub‐ionospherically on long paths across the Arctic are used to determine the high latitude, daytime D region height and sharpness of…Effects of field warming on high arctic soil bacterial community: a metagenomic analysis
1 November, 2018 by Kevin Newsham, Peter Convey
Soil microbial communities in the Arctic, one of the most rapidly warming regions on Earth, play an important role in a range of ecological processes. This report describes initial studies…Electron acceleration to MeV energies at Jupiter and Saturn
1 November, 2018 by Emma Woodfield
The radiation belts and magnetospheres of Jupiter and Saturn show significant intensities of relativistic electrons with energies up to tens of MeV. To date, the question on how the electrons…Read more on Electron acceleration to MeV energies at Jupiter and Saturn
Effects of vertically propagating mountain waves during a strong wind event over the Ross Ice Shelf, Antarctica
1 November, 2018 by John Turner
Weather forecasting in the Antarctic presents many challenges, with strong wind events (SWEs) often disrupting air and field operations. Here, we study the mechanisms responsible for a SWE (maximum wind…Draft genome sequence of a novel actinobacterium from the family Intrasporangiaceae isolated from Signy Island, Antarctica
1 November, 2018 by David Pearce, Peter Convey
Actinobacterium strain S63T isolated from a soil sample collected from Spindrift Col on Signy Island (South Orkney Islands, maritime Antarctic) is a new species of the Intrasporangiaceae family. Here we…Determination of the equatorial electron differential flux from observations at low Earth orbit
1 November, 2018 by Hayley Allison, Richard Horne, Sarah Glauert
Variations in the high-energy relativistic electron flux of the radiation belts depend on transport, acceleration, and loss processes, and importantly on the lower-energy seed population. However, data on the seed…The low-resolution version of HadGEM3 GC3.1: development and evaluation for global climate
1 November, 2018 by Antony Siahaan
A new climate model, HadGEM3 N96ORCA1, is presented that is part of the GC3.1 configuration of HadGEM3. N96ORCA1 has a horizontal resolution of ~135 km in the atmosphere and 1°…The TropD software package (v1): standardized methods for calculating tropical-width diagnostics
26 October, 2018 by Alison Ming
Observational and modeling studies suggest that Earth's tropical belt has widened over the late 20th century and will continue to widen throughout the 21st century. Yet, estimates of tropical-width variations…The internal structure of the Brunt Ice Shelf from ice-penetrating radar analysis and implications for ice shelf fracture
24 October, 2018 by Ed King, Hilmar Gudmundsson, Jan De Rydt
The rate and direction of rift propagation through ice shelves depends on both the stress field and the heterogeneity, or otherwise, of the physical properties of the ice. The Brunt…Marine plastics threatens giant Atlantic Marine Protected Areas
20 October, 2018 by Chester Sands, David Barnes, Simon Morley, Will Goodall-Copestake
There has been a recent shift in global perception of plastics in the environment, resulting in a call for greater action. Science and the popular media have highlighted plastic as…Read more on Marine plastics threatens giant Atlantic Marine Protected Areas
Evidence for the long-term sedimentary environment in an Antarctic subglacial lake
18 October, 2018 by Andy Smith, Dominic Hodgson, Ed King
Lakes beneath the Antarctic Ice Sheet are of fundamental scientific interest for their ability to contain unique records of ice sheet history and microbial life in their sediments. However, no…Read more on Evidence for the long-term sedimentary environment in an Antarctic subglacial lake
Surface meltwater impounded by seasonal englacial storage in West Greenland
16 October, 2018 by Keith Nicholls, Tun Jan Young
The delivery of surface meltwater through englacial drainage systems to the bed of the Greenland Ice Sheet modulates ice flow through basal lubrication. Recent studies in Southeast Greenland have identified…Read more on Surface meltwater impounded by seasonal englacial storage in West Greenland
Simulating the Last Interglacial Greenland stable water isotope peak: the role of Arctic sea ice changes
15 October, 2018 by Emilie Capron, Irene Malmierca Vallet, Louise Sime
Last Interglacial (LIG), stable water isotope values (δ18O) measured in Greenland deep ice cores are at least 2.5‰ higher compared to the present day. Previous isotopic climate simulations of the…Ice core evidence for decoupling between mid-latitude atmospheric water cycle and Greenland temperature during the last deglaciation
8 October, 2018 by Emilie Capron
The last deglaciation represents the most recent example of natural global warming associated with large-scale climate changes. In addition to the long-term global temperature increase, the last deglaciation onset is…