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Antarctic snow

Microbes influence the biogeochemical and optical properties of maritime Antarctic snow.

Microbes influence the biogeochemical and optical properties of maritime Antarctic snow.

... the Antarctic Peninsula Region has increased significantly in recent decades, leading to greater liquid water availability across a more expansive ...wet Antarctic snow require consideration if we ...

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Iron in modern and ancient East Antarctic snow : implications for phytoplankton production in the Southern Ocean

Iron in modern and ancient East Antarctic snow : implications for phytoplankton production in the Southern Ocean

... lion Fe was measured in present-day and ancient East Antarctic snow to investigate the atmospheric flux of Fe into the Southern Ocean, the solubility of this atmospheric iron, and the le[r] ...

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Mineralogy and noble gas isotopes of micrometeorites collected from Antarctic snow

Mineralogy and noble gas isotopes of micrometeorites collected from Antarctic snow

... Japan Antarctic Research Expedition (JARE) in 2003 and 2010, ...respectively. Antarctic snow samples JARE-42 and JARE-51, respectively about 100 and 300 kg, were collected near Dome Fuji Station, ...

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Potential genesis and implications of calcium nitrate in Antarctic snow

Potential genesis and implications of calcium nitrate in Antarctic snow

... the Antarctic snow (Legrand and Delmas, 1986; Michalski et ...surface snow chemistry across the Antarc- tic ice sheet by Bertler et ...surface snow with high concentrations in the interior of ...

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Snow melting bias in microwave mapping of Antarctic snow accumulation

Snow melting bias in microwave mapping of Antarctic snow accumulation

... From Table 2 it is clear that excluding SMB data from melt zones clearly improves the fit between A06 map and the ob- servations with RMS relative difference of 28% instead of 35%. We further investigate here the ...

7

On the similarity and apparent cycles of isotopic variations in East Antarctic snow pits

On the similarity and apparent cycles of isotopic variations in East Antarctic snow pits

... annual snow layer thicknesses and consequently their cycles have been explained as reflect- ing seasonal climate variation (Oerter et ...annual snow layer thickness is often less than 10 cm (Petit et ...ing ...

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Regional Antarctic snow accumulation over the past 1000 years

Regional Antarctic snow accumulation over the past 1000 years

... The ice cores were first separated into geographical regions (Fig. 1a) and normalized based on the mean and standard deviation during the reference period 1960–1990. Based on the defined boundaries, the largest density ...

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Cl, K AND Na CONCENTRATIONS IN ANTARCTIC SNOW AND ICE  EUR 415 e

Cl, K AND Na CONCENTRATIONS IN ANTARCTIC SNOW AND ICE EUR 415 e

... The Cl, K and N a concentrations of precipitation, firn and ice samples collected in Queen Maud Land King Baudouin Base, 74° S.. have been determined.[r] ...

8

Refinement of the ice absorption spectrum in the visible using radiance profile measurements in Antarctic snow

Refinement of the ice absorption spectrum in the visible using radiance profile measurements in Antarctic snow

... in snow, where scattering is ...in snow have traveled several meters since they entered the snowpack at the ...reflectance, snow scatter- ing is in general high but depends on unknown snow ...

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Photosynthetic UV stress tolerance of the Antarctic snow alga Chlorella sp. modified by enhanced temperature?

Photosynthetic UV stress tolerance of the Antarctic snow alga Chlorella sp. modified by enhanced temperature?

... the Antarctic [19, ...in snow packs during the summer melting season ...six Antarctic strains, of which algae of the class Trebouxiophyceae, in- cluding Chlorella, presented the greatest growth rates ...

9

Variations in snow and firn chemistry along US ITASE traverses and the effect of surface glazing

Variations in snow and firn chemistry along US ITASE traverses and the effect of surface glazing

... surface snow and firn across extensive regions of East and West Antarctica and may also be the first to pro- vide total-Cs concentration ...in Antarctic soils and sediments to gauge its impact on ...recent ...

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Influence of snow depth and surface flooding on light transmission through Antarctic pack ice

Influence of snow depth and surface flooding on light transmission through Antarctic pack ice

... Abstract Snow on sea ice alters the properties of the underlying ice cover as well as associated physical and biological processes at the interfaces between atmosphere, sea ice, and ...The Antarctic ...

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Spatial–temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station–Vostok station transect

Spatial–temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station–Vostok station transect

... equal snow samples have been analysed for major ions using ion ...the Antarctic snow annually participates in four international inter-laboratory comparison analyses (QA/QC Programme) of major ions ...

9

Retrieval of snow freeboard of Antarctic sea ice using waveform fitting of CryoSat-2 returns

Retrieval of snow freeboard of Antarctic sea ice using waveform fitting of CryoSat-2 returns

... over Antarctic sea ...a snow layer atop sea ice as well as scattering from below the snow sur- ...the snow freeboard is ...and snow surface radar return power levels with those from ...

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Antarctica's cultural heritage

Antarctica's cultural heritage

... It is interesting to see that the AHT only need to be informed regarding items dating from before 1917 (i.e. from the Heroic Age), and this suggests that the focus of their work at present is the preservation of the ...

32

Measurements and modelling of snow particle size and shortwave infrared albedo over a melting Antarctic ice sheet

Measurements and modelling of snow particle size and shortwave infrared albedo over a melting Antarctic ice sheet

... individual snow crystals, which have a variety of shapes and sizes, and are often bounded in clus- ...of snow particles that synthesize the scattering proper- ties of the snowpack ...a snow particle ...

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Snow thickness profiling on Antarctic sea ice with GPR   rapid and accurate measurements with the potential to upscale needles to a haystack

Snow thickness profiling on Antarctic sea ice with GPR rapid and accurate measurements with the potential to upscale needles to a haystack

... internal snow layers as well as snow thickness on sea ...radar snow thickness estimates with in situ ...airborne snow thickness radar data with one ground-truth pro fi le reporting good ...

9

Perspectives on Antarctic conservation: an analysis of New Zealand Antarctic stakeholder views

Perspectives on Antarctic conservation: an analysis of New Zealand Antarctic stakeholder views

... West Antarctic marine ice sheet (containing ice equivalent to over a 3 metre rise in global mean sea level if melted) provides another source of concern in terms of predictions of climate-change-related sea level ...

179

Managing fishing in the sub Antarctic

Managing fishing in the sub Antarctic

... Harvesting of finfish in the sub-Antarctic is briefly described together with an historical account of its management by the international Commission for the Conservation of Antarctic Marine Living ...

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Assembly processes of moss and lichen community with snow melting at the coastal region of the Barton Peninsula, maritime Antarctic

Assembly processes of moss and lichen community with snow melting at the coastal region of the Barton Peninsula, maritime Antarctic

... maritime Antarctic region are divided into pioneer com- munity, immature community, and climax and that the driving force to determine vegetation in the Antarctic region is the duration after glacier ...the ...

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