Sea ice versus storms: what controls sea salt in Arctic ice cores?
The sea ice surface is thought to be a major source of sea salt aerosol, suggesting that sodium records of polar ice cores may trace past sea ice extent. Here […]
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Read more of: Sea ice versus storms: what controls sea salt in Arctic ice cores?
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EMIC wave events during the four GEM QARBM challenge intervals
Read more of: EMIC wave events during the four GEM QARBM challenge intervalsThis paper presents observations of EMIC waves from multiple data sources during the four GEM challenge events in 2013 selected by the GEM “Quantitative Assessment of Radiation Belt Modeling” focus […]
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Quantitative comparison of taxa and taxon concepts in the diatom genus Fragilariopsis: a case study on using slide scanning, multi‐expert image annotation and image analysis in taxonomy
Read more of: Quantitative comparison of taxa and taxon concepts in the diatom genus Fragilariopsis: a case study on using slide scanning, multi‐expert image annotation and image analysis in taxonomySemi‐automated methods for microscopic image acquisition, image analysis and taxonomic identification have repeatedly received attention in diatom analysis. Less well studied is the question whether and how such methods might […]
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Seasonal prey switching in non-breeding gentoo penguins related to a wintertime environmental anomaly around South Georgia
Read more of: Seasonal prey switching in non-breeding gentoo penguins related to a wintertime environmental anomaly around South GeorgiaInformation 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 […]
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Time-lapse cameras reveal latitude and season influence breeding phenology durations in penguins
Read more of: Time-lapse cameras reveal latitude and season influence breeding phenology durations in penguinsVariation in the phenology of avian taxa has long been studied to understand how a species reacts to environmental changes over both space and time. Penguins (Sphenicidae) serve as an […]
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Investigating the distribution of magmatism at the onset of Gondwana breakup with novel strapdown gravity and aeromagnetic data
Read more of: Investigating the distribution of magmatism at the onset of Gondwana breakup with novel strapdown gravity and aeromagnetic dataMassive volumes of mafic magmatism forming the Karoo-Ferrar Large Igneous Province (LIP) in Southern Africa and Antarctica preceded Jurassic breakup of the Gondwana Supercontinent. This widespread LIP magmatism is attributed […]
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Varying depth and swarm dimensions of open-ocean Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea) over diel cycles
Read more of: Varying depth and swarm dimensions of open-ocean Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea) over diel cyclesDiel vertical migration (DVM) behaviour in swarms of Antarctic krill (Euphausia superba Dana, 1850) is notoriously variable, with swarms being found at a range of depths and in different shapes, […]
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Geothermal heat flux reveals the Iceland hotspot track underneath Greenland
Read more of: Geothermal heat flux reveals the Iceland hotspot track underneath GreenlandCurie depths beneath Greenland are revealed by spectral analysis of data from the World Digital Magnetic Anomaly Map 2. A thermal model of the lithosphere then provides a corresponding geothermal […]
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Can the optimisation of pop-up agriculture in remote communities help feed the world?
Read more of: Can the optimisation of pop-up agriculture in remote communities help feed the world?Threats to global food security have generated the need for novel food production techniques to feed an ever-expanding population with ever-declining land resources. Hydroponic cultivation has been long recognised as […]
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Using habitat models for chinstrap penguins Pygoscelis antarctica to advise krill fisheries management during the penguin breeding season
Read more of: Using habitat models for chinstrap penguins Pygoscelis antarctica to advise krill fisheries management during the penguin breeding seasonAim: 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. […]
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Holocene dynamics of the Southern Hemisphere westerly winds and possible links to CO2 outgassing
Read more of: Holocene dynamics of the Southern Hemisphere westerly winds and possible links to CO2 outgassingThe Southern Hemisphere westerly winds (SHW) play an important role in regulating the capacity of the Southern Ocean carbon sink. They modulate upwelling of carbon-rich deep water and, with sea […]
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Observations and modelling of increased nitric oxide in the Antarctic polar middle atmosphere associated with geomagnetic storm driven energetic electron precipitation
Read more of: Observations and modelling of increased nitric oxide in the Antarctic polar middle atmosphere associated with geomagnetic storm driven energetic electron precipitationNitric oxide (NO) produced in the polar middle and upper atmosphere by energetic particle precipitation depletes ozone in the mesosphere and, following vertical transport in the winter polar vortex, in […]