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The interpretation of spikes and trends in concentration of nitrate in polar ice cores, based on evidence from snow and atmospheric measurements
1 January, 2008 by Anna Jones, Eric Wolff
Nitrate is frequently measured in ice cores, but its interpretation remains immature. Using daily snow surface concentrations of nitrate at Halley (Antarctica) for 2004 - 2005, we show that sharp…The past 800 ka viewed through Antarctic ice cores
1 January, 2008 by Eric Wolff
The later parts of the Quaternary are of particular importance for assessing out ability to understand the future operation of the Earth because the main boundary conditions are similar to…Read more on The past 800 ka viewed through Antarctic ice cores
The significance of the moult cycle to cold tolerance in the Antarctic collembolan Cryptopygus antarcticus
1 January, 2008 by Roger Worland, Peter Convey
Research into the ecophysiology of arthropod cold tolerance has largely focussed on those parts of the year and/or the life cycle in which cold stress is most likely to be…Mapping ionospheric backscatter measured by the SuperDARN HF radars – Part 2: Assessing SuperDARN virtual height models
1 January, 2008 by Gareth Chisham
The Super Dual Auroral Radar Network (SuperDARN) network of HF coherent backscatter radars form a unique global diagnostic of large-scale ionospheric and magnetospheric dynamics in the northern and southern hemispheres.…Regional genetic diversity patterns in Antarctic hairgrass (Deschampsia antarctica Desv.)
1 January, 2008
Aim To determine patterns in diversity of a major Antarctic plant species, including relationships of Antarctic populations with those outside the Antarctic zone. Location Antarctic Peninsula, Maritime Antarctica, sub-Antarctic islands,…RRS James Clark Ross Cruise 139, 05 Dec-12 Dec 2005. Drake Passage Repeat Hydrography: WOCE Southern Repeat Section 1b – Burdwood Bank to Elephant Island
1 January, 2008 by Michael Meredith
This report describes the eleventh occupation of the Drake Passage section, established during the World Ocean Circulation Experiment as repeat section SR1b. It was first occupied by Southampton Oceanography Centre…Biodiversity and biogeography of southern temperate and polar bryozoans
1 January, 2008 by David Barnes, Huw Griffiths
Aim To describe the distribution of biodiversity and endemism of bryozoans in southern temperate and polar waters. We hypothesized that we would find: (1) no strong latitudinal richness gradient; (2)…Read more on Biodiversity and biogeography of southern temperate and polar bryozoans
Investigating turbulent structure of ionospheric plasma velocity using the Halley SuperDARN radar
7 December, 2007 by Gareth Chisham, Mervyn Freeman
We present a detailed analysis of the spatial structure of the ionospheric plasma velocity in the nightside F-region ionosphere, poleward of the open-closed magnetic field line boundary (OCB), i.e. in…The mid Pliocene Warm Period : a test-bed for integrating data and models
1 December, 2007
In this paper we present a summary of palaeoclimate modelling activities carried out for the mid Pliocene, and demonstrate how a combined data and modelling approach has led to significant…Read more on The mid Pliocene Warm Period : a test-bed for integrating data and models
Model uncertainty in the ecosystem approach to fisheries
1 November, 2007 by John Turner, Simeon Hill
Fisheries scientists habitually consider uncertainty in parameter values, but often neglect uncertainty about model structure. The importance of this latter source of uncertainty is likely to increase with the greater…Read more on Model uncertainty in the ecosystem approach to fisheries
Quasi-biennial modulation of the semidiurnal tide in the upper mesosphere above Halley, Antarctica
1 November, 2007
We present an analysis of a long-term archive of horizontal wind data derived from meteor wind observations from a SuperDARN radar at Halley, Antarctica (76S, 27W). Systematic differences between the…Spiracle structure in ticks (Ixodida: Anactinotrichida: Arachnida): resume, taxonomic and functional significance
1 November, 2007
Spiracle and tracheal structure in the extant Ixodida is revised and shown to comprise 29 distinct component characters, some of which are common to all Anactinotrichida, while others are unique…Low-altitude measurements of 2–6 MeV electron trapping lifetimes at 1.5 ≤ L ≤ 2.5
1 October, 2007 by Nigel Meredith, Richard Horne, Sarah Glauert
During the Halloween Storm period (October–November 2003), a new Van Allen belt electron population was powerfully accelerated. The inner belt of electrons formed in this process decayed over a period…Read more on Low-altitude measurements of 2–6 MeV electron trapping lifetimes at 1.5 ≤ L ≤ 2.5
Temporal variability of the descent of high-alitutude NOx inferred from ionospheric data
1 September, 2007 by Mark Clilverd
In this study we investigate periods of enhanced ionization in the mesosphere during Northern Hemisphere wintertime. Long-lasting ionization enhancements (days) are typically produced by solar proton events or by the…Electron acceleration in the Van Allen radiation belts by fast magnetosonic waves
1 September, 2007 by Nigel Meredith, Richard Horne, Sarah Glauert
Local acceleration is required to explain electron flux increases in the outer Van Allen radiation belt during magnetic storms. Here we show that fast magnetosonic waves, detected by Cluster 3,…Read more on Electron acceleration in the Van Allen radiation belts by fast magnetosonic waves
Ray tracing of penetrating chorus and its implications for the radiation belts
1 August, 2007 by Nigel Meredith
Using ray tracing and suprathermal electron distributions from CRRES, the final propagation latitudes of typical chorus rays are calculated as a function of L, MLT, AE, and initial wave normal…Read more on Ray tracing of penetrating chorus and its implications for the radiation belts
Radio echo sounding of Pine Island Glacier, West Antarctica: Aperture synthesis processing and analysis of feasibility from space
1 August, 2007 by David Vaughan, Hugh Corr
Airborne radio echo sounding of the West Antarctic Ice Sheet over Pine Island Glacier was performed in the austral summer of 2004/2005 under the National Science Foundation's West Antarctic Ice…Improved dynamic geomagnetic rigidity cutoff modeling: testing predictive accuracy
18 July, 2007 by Mark Clilverd, Tracy Moffat-Griffin
. In the polar atmosphere, significant chemical and ionization changes occur during solar proton events (SPE). The access of solar protons to this region is limited by the dynamically changing…Read more on Improved dynamic geomagnetic rigidity cutoff modeling: testing predictive accuracy
Arctic and Antarctic polar winter NOx and energetic particle precipitation in 2002-2006
1 June, 2007 by Mark Clilverd
We report GOMOS nighttime observations of middle atmosphere NO2 and O-3 profiles during eight recent polar winters in the Arctic and Antarctic. The NO2 measurements are used to study the…Read more on Arctic and Antarctic polar winter NOx and energetic particle precipitation in 2002-2006
Parameterization of radiation belt electron loss timescales due to interactions with chorus waves
1 June, 2007 by Nigel Meredith
Wave-particle interactions lead to the loss of relativistic electrons from the outer radiation belt on timescales ranging from hours to weeks. For a fixed value of chorus wave amplitudes pitch-angle…On the association between northward turnings of the interplanetary magnetic field and substorm onsets
1 April, 2007 by Mervyn Freeman
We re-examine whether substorms are triggered by solar wind fluctuations or an internal magnetospheric instability by comparing the statistical associations between substorm onsets and (1) an external trigger definition, (2)…Sensitivity of modelled atmospheric circulation to the representation of stable boundary layer processes
1 March, 2007 by John King
We examine the sensitivity of the modelled climate of the third generation Hadley Centre climate model to changes in the parametrization of surface and boundary-layer fluxes under stable stratification. Replacing…Effects of tropical sea surface temperature (SST) errors on the Antarctic atmospheric circulation of HadCM3
1 March, 2007 by John Turner, Thomas Lachlan-Cope
This paper investigate the large mean sea level pressure errors in the HadCM3 atmosphere-ocean global climate model around Antarctica and finds them to be caused by the sea surface temperature…Glacial/interglacial changes in mineral dust and sea-salt records in polar ice cores: sources, transport, and deposition
24 February, 2007 by Eric Wolff
Sea salt and mineral dust records as represented by Na+ and Ca2+ concentrations, respectively, in Greenland and Antarctic ice cores show pronounced glacial/interglacial variations. For the Last Glacial Maximum (LGM)…Circumpolar connections between Antarctic krill (Euphausia superba Dana) populations: investigating the roles of ocean and sea ice transport
1 February, 2007 by Eugene Murphy, Jonathan Watkins, Sally Thorpe
Antarctic krill, Euphausia superba Dana, has a heterogeneous circumpolar distribution in the Southern Ocean. Krill have a close association with sea ice which provides access to a critical food source…Taking issue with PPARC over STP
1 January, 2007
Following the PPARC programmatic review announced in the spring of last year, with its gloomy outlook for solar–terrestrial physics, three young scientists in the field mobilized the junior members of…Investigating the turbulent structure of ionospheric plasma velocities on open and closed magnetic field lines
1 January, 2007 by Gareth Chisham, Mervyn Freeman
In this paper we review some recent work investigating the turbulent structure of the ionospheric plasma velocity in the polar and auroral regions. The studies make use of spatially distributed…Plasma astrophysics: Acceleration of killer electrons
1 January, 2007 by Richard Horne
Relativistic electrons in the outer Van Allen belt wreak havoc with satellites in geosynchronous orbit, but how they reach such high energies has been unclear. New data identify gyro-resonant wave-particle…Read more on Plasma astrophysics: Acceleration of killer electrons
Antarctic ecology: from genes to ecosystems. Part 2: Evolution, diversity and function
1 January, 2007 by Andrew Clarke, Eugene Murphy, Nadine Johnston
The Antarctic biota has evolved over the last 100 million years in increasingly isolated and cold conditions. As a result, Antarctic species, from micro-organisms to vertebrates, have adapted to life…Read more on Antarctic ecology: from genes to ecosystems. Part 2: Evolution, diversity and function
The Italian-British Antarctic geophysical and geological survey in northern Victoria Land 2005-06 – towards the International Polar Year 2007-08
1 January, 2007 by Fausto Ferraccioli
During the summer season 2005-06 a major scientific collaboration between the British Antarctic Survey (BAS) and the Italian Programma Nazionale di Ricerche in Antartide (PNRA) carried out airborne geophysical investigations…Ice core records as sea ice proxies: An evaluation from the Weddell Sea region of Antarctica
1 January, 2007 by Eric Wolff, Robert Mulvaney
Ice core records of methanesulfonic acid (MSA) from three sites around the Weddell Sea are investigated for their potential as sea ice proxies. It is found that the amount of…Lactation and mother–pup behaviour in the Mediterranean monk seal Monachus monachus: an unusual pattern for a phocid
1 January, 2007 by Jaume Forcada
This paper presents baseline information on maternal behaviour and lactation in the Mediterranean monk seal, with particular focus on the age at which pups are weaned. The study was conducted…A new species of Pareledone (Cephalopoda: Octopodidae) from Antarctic Peninsula Waters
1 January, 2007
During recent cruises aboard RV Polarstern in the Antarctic Peninsula region, a new species of benthic octopodid was discovered whose generic affinities based on morphological characteristics were uncertain. Molecular sequence…Read more on A new species of Pareledone (Cephalopoda: Octopodidae) from Antarctic Peninsula Waters
Photoformation of hydroxyl radical on snow grains at Summit, Greenland
1 January, 2007
We measured the photoformation of hydroxyl radical (OH) on snow grains at Summit, Greenland during the spring and summer. Midday rates of OH formation in the snow phase in the…Read more on Photoformation of hydroxyl radical on snow grains at Summit, Greenland
Behaviour of tracer diffusion in simple atmospheric boundary layer models
1 January, 2007
1-D profiles and time series from an idealised atmospheric boundary layer model are presented, which show agreement with boundary layer measurements of polar NOx. Diffusion models are increasingly being used…Read more on Behaviour of tracer diffusion in simple atmospheric boundary layer models
A high-resolution aeromagnetic survey over the Cape Roberts Rift Basin: correlations with seismic reflection and magnetic susceptibility log data. Extended abstract
1 January, 2007 by Fausto Ferraccioli
A high resolution aeromagnetic survey (altitude 125 m asl, spacing 500 m , area 800 km2) was carried out in 1994 offshore of Cape Roberts by the GITARA (German ITalian…Aeromagnetic anomaly patterns reveal buried faults along the eastern margin of the Wilkes Subglacial Basin (East Antarctica)
1 January, 2007 by Fausto Ferraccioli
The Wilkes Subglacial Basin (WSB) is the major morphological feature recognized in the hinterland of the Transantarctic Mountains. The origin of this basin remains contentious and relatively poorly understood due…Aeromagnetic search for Cenozoic magmatism over the Admiralty Mountains Block (East Antarctica)
1 January, 2007 by Fausto Ferraccioli
Cenozoic magmatic rocks of the Transantarctic Mountains provide an important window on the tectonic and magmatic processes of the West Antarctic Rift System. Previous aeromagnetic investigations in northern Victoria Land…Climate change and invasibility of the Antarctic benthos
1 January, 2007 by Andrew Clarke, Lloyd Peck
Benthic communities living in shallow-shelf habitats in Antarctica (Read more on Climate change and invasibility of the Antarctic benthos
Evidence for a CO increase in the SH during the 20th century based on firn air samples from Berkner Island, Antarctica
1 January, 2007 by Robert Mulvaney
Trends of carbon monoxide (CO) for the past 100 years are reported as derived from Antarctic firn drilling expeditions. Only one of 3 campaigns provided high quality results. The trend…Disturbance, colonization and development of Antarctic benthic communities
1 January, 2007 by David Barnes
A decade has yielded much progress in understanding polar disturbance and community recovery—mainly through quantifying ice scour rates, other disturbance levels, larval abundance and diversity, colonization rates and response of…Read more on Disturbance, colonization and development of Antarctic benthic communities
Richness, abundance and shell use of subarctic and arctic hermit crabs
1 January, 2007 by David Barnes
Hermit crabs are an obvious, common and abundant feature of global shallow water environments but almost nothing is known of their ecology at their extreme latitudinal ranges, the Arctic and…Read more on Richness, abundance and shell use of subarctic and arctic hermit crabs
Growth rate and its variability in erect Antarctic bryozoans
1 January, 2007 by David Barnes, Katrin Linse
Climate is altering rapidly in parts of the Arctic and Antarctic but we know little about how marine organisms are responding to, or might respond to such changes. Knowledge of…Read more on Growth rate and its variability in erect Antarctic bryozoans
Are Antarctic Peninsula Ice Sheet grounding events manifest in sedimentary cycles on the adjacent continental rise?
1 January, 2007 by Claus-Dieter Hillenbrand
The direct record of Late Miocene–Early Pliocene Antarctic Peninsula Ice Sheet expansions from a previously published seismostratigraphic study of the outer shelf at Ocean Drilling Program Site 1097 is compared…Application of liposome and stable isotope tracer techniques to study polyunsaturated fatty acid biosynthesis in marine zooplankton
1 January, 2007
We investigated the ability of four species of marine zooplankton to synthesize polyunsaturated fatty acids (PUFAs) during pulse-chase tracer experiments. Liposomes containing a deuterium labelled precursor fatty acid, D5-18:3n-3, were…Radar-derived bed roughness characterization of Institute and Möller ice streams, West Antarctica, and comparison with Siple Coast ice streams
1 January, 2007
Subglacial bed conditions exert a significant control on ice stream behavior and evolution, and can be characterized by determining bed roughness from FFT analysis of radar-imaged basal reflectors. Here we…Variations in behaviour and condition of a Southern Ocean top predator in relation to in situ oceanographic conditions
1 January, 2007 by Michael Meredith, Sally Thorpe
Responses by marine top predators to environmental variability have previously been almost impossible to observe directly. Using novel, animal-mounted instruments simultaneously recording movements, diving behaviour and in-situ oceanographic properties, we…Observations of OH and HO2 radicals in coastal Antarctica
1 January, 2007 by Anna Jones, Howard Roscoe
OH and HO2 radical concentrations have been measured in the boundary layer of coastal Antarctica for a six-week period during the austral summer of 2005. The measurements were performed at…Read more on Observations of OH and HO2 radicals in coastal Antarctica
Differential thermal adaptation of clonal strains of a protist morphospecies originating from different climatic zones
1 January, 2007
Eco-physiological variation and local adaptation are key issues in microbial ecology. Here, we investigated the thermal adaptation of 19 strains of the same Spumella morphospecies (Chrysophyceae, Heterokonta). In order to…Climate change effects on organic matter decomposition rates in ecosystems from the Maritime Antarctic and Falkland Islands
1 January, 2007 by Peter Convey
Antarctic terrestrial ecosystems have poorly developed soils and currently experience one of the greatest rates of climate warming on the globe. We investigated the responsiveness of organic matter decomposition in…External nutrient inputs into terrestrial ecosystems of the Falkland Islands and the Maritime Antarctic region
1 January, 2007 by Peter Convey
Antarctic terrestrial ecosystems are nutrient-poor and depend for their functioning in part on external nutrients. However, little is known about the relative importance of various sources. We measured external mineral…Food choice of Antarctic soil arthropods clarified by stable isotope signatures
1 January, 2007 by Peter Convey
Antarctic soil ecosystems are amongst the most simplified on Earth and include only few soil arthropod species, generally believed to be opportunistic omnivorous feeders. Using stable isotopic analyses, we investigated…Read more on Food choice of Antarctic soil arthropods clarified by stable isotope signatures
The effect of environmental change on vascular plant and cryptogam communities from the Falkland Islands and the Maritime Antarctic
1 January, 2007 by Peter Convey
Background: Antarctic terrestrial vegetation is subject to one of the most extreme climates on Earth. Currently, parts of Antarctica are one of the fastest warming regions on the planet. During…Modeling the propagation characteristics of chorus using CRRES suprathermal electron fluxes
1 January, 2007 by Nigel Meredith
In the present paper, phase space density functions of the form f(v) = A N /v n are fitted to statistical distributions of suprathermal electron fluxes (E = 0.213–16.5 keV)…Energetic cost of synthesizing proteins in Antarctic limpet, Nacella concinna (Strebel, 1908), is not temperature dependent
1 January, 2007 by Andrew Clarke, Lloyd Peck
The energetic cost of protein synthesis is thought to account for a significant proportion of total metabolism. However, attempts to estimate the energetic cost of synthesizing proteins have resulted in…Geomorphological signature and flow dynamics of The Minch palaeo-ice stream, NW Scotland
1 January, 2007 by Robert Larter
Large-scale streamlined glacial landforms are identified in 11 areas of northwest Scotland, from the Isle of Skye in the south to the Butt of Lewis in the north. These ice-directional…The biodiversity of the deep Southern Ocean benthos
1 January, 2007 by Katrin Linse
Our knowledge of the biodiversity of the Southern Ocean (SO) deep benthos is scarce. In this review, we describe the general biodiversity patterns of meio-, macro- and megafaunal taxa, based…Read more on The biodiversity of the deep Southern Ocean benthos
First insights into the biodiversity and biogeography of the Southern Ocean deep sea
1 January, 2007 by Katrin Linse
Shallow marine benthic communities around Antarctica show high levels of endemism, gigantism, slow growth, longevity and late maturity, as well as adaptive radiations that have generated considerable biodiversity in some…Read more on First insights into the biodiversity and biogeography of the Southern Ocean deep sea
Isolation of diverse viable fungi from the larvae of the introduced chironomid Eretmoptera murphyi on Signy Island
1 January, 2007
The chironimid midge Eretmoptera murphyi has been introduced to Signy Island and has since become established at a single site. Viable propagules of a diverse range of micro-fungi were recovered…Introduction or stimulation? The association of Stropharia aurantiaca with bark and wood-chip mulches
1 January, 2007
Polymerase chain reaction (PCR) primers ST1 and ST2 were designed for the specific amplification of ribosomal DNA from Stropharia aurantiaca, and a nested PCR method was developed for the detection…The cyanobacterial community of polygon soils at an inland Antarctic nunatak
1 January, 2007 by David Pearce, Peter Convey
Inland Antarctic terrestrial ecosystems and biodiversity are poorly understood in comparison with Antarctic coastal regions. Microorganisms, as primary colonists, are integral to Antarctic soil ecosystem development, essential for pedogenesis and…Read more on The cyanobacterial community of polygon soils at an inland Antarctic nunatak
Gametogenesis and gonad mass cycles in the common circumpolar Antarctic echinoid Sterechinus neumayeri
1 January, 2007 by Lloyd Peck
Polar conditions (low and stable seawater temperature coupled with highly seasonal primary productivity) constrain reproduction in benthic invertebrates. The reproductive cycle of the common Antarctic sea urchin Sterechinus neumayeri was…Life in the fast lane: The free-ranging activity, heart rate and metabolism of an Antarctic fish tracked in temperate waters
1 January, 2007 by Lloyd Peck
The fish species Notothenia angustata inhabits temperate waters (10 °C), yet retains physiological traits that show it once existed at sub-zero temperatures. We determined the free-ranging activity, heart rate and…Contributions to accelerating atmospheric CO2 growth from economic activity, carbon intensity, and efficiency of natural sinks
1 January, 2007
The growth rate of atmospheric carbon dioxide (CO2), the largest human contributor to human-induced climate change, is increasing rapidly. Three processes contribute to this rapid increase. Two of these processes…Persistence of duplicated PAC1 receptors in the teleost, Sparus auratus
1 January, 2007 by Melody Clark
Background: Duplicated genes are common in vertebrate genomes. Their persistence is assumed to be either a consequence of gain of novel function (neofunctionalisation) or partitioning of the function of the…Read more on Persistence of duplicated PAC1 receptors in the teleost, Sparus auratus
An assessment of the polar HOx photochemical budget based on 2003 Summit Greenland field observations
1 January, 2007
An interpretative modeling analysis is conducted to simulate the diurnal variations in OH and HO2 + RO2 observed at Summit, Greenland in 2003. The main goal is to assess the…Interannual to diurnal variability in the near-surface scattering layer in Drake Passage
1 January, 2007 by Geraint Tarling
Backscattering strength was estimated from 127 shipboard surveys with an acoustic Doppler current profiler (ADCP) made during Drake Passage transits from 1999 to 2004. The backscattering strength is used to…A decade of the Super Dual Auroral Radar Network (SuperDARN): scientific achievements, new techniques and future directions
1 January, 2007 by Gareth Chisham, Mervyn Freeman, Michael Pinnock
The Super Dual Auroral Radar Network (SuperDARN) has been operating as an international co-operative organisation for over 10 years. The network has now grown so that the fields of view…Spatial and temporal variability across life’s hierarchies in the terrestrial Antarctic
1 January, 2007 by Peter Convey
Antarctica and its surrounding islands lie at one extreme of global variation in diversity. Typically, these regions are characterized as being species poor and having simple food webs. Here, we…Read more on Spatial and temporal variability across life’s hierarchies in the terrestrial Antarctic
Statistical relations between the probability of occurrence of Pc3-4 pulsations at high latitudes in the Antarctic regions and the solar wind and IMF parameters
1 January, 2007
Geomagnetic pulsation in the Pc3–4 bands have been studied at high Antarctic latitudes during the local summer. The statistical relation between the occurrence probability of Pc3 and Pc4 pulsations and…Delayed arm regeneration in the Antarctic brittlestar Ophionotus victoriae
1 January, 2007 by Lloyd Peck, Melody Clark
We describe the levels of natural arm damage in the Antarctic brittle star Ophionotus victoriae and the rate of arm regeneration over the period of 1 yr, as measured in…Read more on Delayed arm regeneration in the Antarctic brittlestar Ophionotus victoriae
Surviving extreme polar winters by desiccation: clues from Arctic springtail (Onychiurus arcticus) EST libraries
1 January, 2007 by Michael Thorne, Roger Worland, Melody Clark
Background Ice, snow and temperatures of -14°C are conditions which most animals would find difficult, if not impossible, to survive in. However this exactly describes the Arctic winter, and the…How well do we know the Antarctic marine fauna? A preliminary study of macroecological and biogeographical patterns in Southern Ocean gastropod and bivalve molluscs
1 January, 2007 by Andrew Clarke, David Barnes, Huw Griffiths, Alistair Crame, Katrin Linse
The aim of this study was to use data for gastropod and bivalve molluscs to determine whether the fauna of the Southern Ocean is sufficiently well known to establish robust…Introduction. Antarctic ecology from genes to ecosystems: the impact of climate change and the importance of scale
1 January, 2007 by Andrew Clarke, Eugene Murphy, Nadine Johnston
Antarctica offers a unique natural laboratory for undertaking fundamental research on the relationship between climate, evolutionary processes and molecular adaptation. The fragmentation of Gondwana and the development of wide-scale glaciation…Climate change and the marine ecosystem of the western Antarctic Peninsula
1 January, 2007 by Andrew Clarke, David Barnes, Eugene Murphy, John King, Lloyd Peck, Michael Meredith
The Antarctic Peninsula is experiencing one of the fastest rates of regional climate change on Earth, resulting in the collapse of ice shelves, the retreat of glaciers and the exposure…Read more on Climate change and the marine ecosystem of the western Antarctic Peninsula
Longitudinal and seasonal variations in plasmaspheric electron density: Implications for electron precipitation
1 January, 2007 by Mark Clilverd, Nigel Meredith, Richard Horne, Sarah Glauert
The tilt and offset of the Earth's magnetic field can significantly affect the longitudinal and seasonal distribution of electron density in the plasmasphere. Here we show that for the solar…Energetic particle precipitation into the middle atmosphere triggered by a coronal mass ejection
1 January, 2007 by Mark Clilverd
Precipitation of relativistic electrons into the atmosphere has been suggested as the primary loss mechanism for radiation belt electrons during large geomagnetic storms. Here we investigate the geographical spread of…