Can the carbon isotopic composition of methane be reconstructed from multi-site firn air measurements? [PDF]
Atmospheric Chemistry and Physics, 2013 Methane is a strong greenhouse gas and large uncertainties exist concerning the future evolution of its atmospheric abundance. Analyzing methane atmospheric mixing and stable isotope ratios in air trapped in polar ice sheets helps in reconstructing the ...
C. J. Sapart +12 more
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Vertical profile of snow-firn density in the vicinity of Vostok station, Central Antarctica
Лëд и снег, 2023 The density of the snow and firn thickness is one of the fundamental and most important physical properties of the polar ice sheets. The data on density is used for reconstructing the past snow accumulation rate variability based on firn core studies ...
A. A. Ekaykin +5 more
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From atmospheric water isotopes measurement to firn core interpretation in Adélie Land: a case study for isotope-enabled atmospheric models in Antarctica [PDF]
The Cryosphere, 2023 In a context of global warming and sea level rise acceleration, it is key to estimate the evolution of the atmospheric hydrological cycle and temperature in polar regions, which directly influence the surface mass balance of the Arctic and Antarctic ice ...
C. Leroy-Dos Santos +11 more
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Trends of halon gases in polar firn air: implications for their emission distributions [PDF]
Atmospheric Chemistry and Physics, 2005 Four halons (H-1301, H-1211, H-2402 and H-1202) have been measured in air samples collected from polar firn from Dome Concordia (Dome C), Antarctica, from Devon Island, Canada and the North Greenland Ice Core Project (NGRIP) site, Greenland. H-2402 and H-
C. E. Reeves +8 more
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The polar sciences journal: the past and future of a crucial research instrument
, 2022 Journals dedicated to the polar sciences have been outliers. Within both the history of science and the history of media, they stand out in several ways, including their comparatively late establishment of peer-review. It was not until the second half of
Gielas, Anna M.
core +1 more source
Frontiers in Earth Science, 2023 Introduction: The products of volcanic eruptions found in the snow, firn and ice deposits of the polar ice sheets are precious sources of information on the volcanic forcing of the climate system in the recent or remote past.
Arina N. Veres +6 more
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Estimation of gas record alteration in very low-accumulation ice cores [PDF]
Climate of the Past, 2020 We measured the methane mixing ratios of enclosed air in five ice core sections drilled on the East Antarctic Plateau. Our work aims to study two effects that alter the recorded gas concentrations in ice cores: layered gas trapping artifacts and firn ...
K. Fourteau +5 more
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Transformation process observations of polar firn to ice [PDF]
Annals of Glaciology, 1993 The transformation of snow to ice under compressive stress is a very slow process unless meltwater is present. A qualitative measure of permeability variation with depth was continuously determined for various shallow-ice cores from the dry-snow zones in both Greenland and Antarctica to investigate this transformation process.
Langway, C.C. jr. +3 more
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Dynamic time warping to quantify age distortion in firn cores impacted by melt processes
Annals of Glaciology, 2023 As warming intensifies across the Greenland ice sheet, an increasing number of shallow coring and radar studies are targeting the melt-impacted firn column to investigate meltwater processes.
Cedric J. Hagen, Joel T. Harper
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Gravitational separation in polar firn. Response to H CRAIG. [PDF]
Science, 1993 International ...
Raynaud, D. +6 more
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