2020
DOI: 10.5194/tc-14-881-2020
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Stable water isotopes and accumulation rates in the Union Glacier region, Ellsworth Mountains, West Antarctica, over the last 35 years

Abstract: Antarctica is well known to be highly susceptible to atmospheric and oceanic warming. However, due to the lack of long-term and in situ meteorological observations, little is known about the magnitude of the warming and the meteorological conditions in the intersection region between

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Cited by 20 publications
(14 citation statements)
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“…C1) suggests that the isotope data could be explained by a simple twocomponent mixture of snow and seawater, with little variation in the isotope fractionation during freezing. Snow/firn from the Union Glacier region in the Weddell Sea sector has the respective endmember specifications (low δ 18 O of −30‰ to 35‰ clearly under the global meteoric water line (GMWL); Hoffmann et al, 2020).…”
Section: Ice Core Sampling and Analysismentioning
confidence: 99%
“…C1) suggests that the isotope data could be explained by a simple twocomponent mixture of snow and seawater, with little variation in the isotope fractionation during freezing. Snow/firn from the Union Glacier region in the Weddell Sea sector has the respective endmember specifications (low δ 18 O of −30‰ to 35‰ clearly under the global meteoric water line (GMWL); Hoffmann et al, 2020).…”
Section: Ice Core Sampling and Analysismentioning
confidence: 99%
“…Topographic data from the ICESat and ICESat-2 missions and the Reference Elevation Model of Antarctica (REMA), derived from very-high-resolution optical stereo images (Howat et al, 2019), are available as a reference for estimating the elevation bias in the InSAR DEMs. We use the ICESat and ICESat-2 data primarily for assessing the temporal stability of surface elevation.…”
Section: Topographic Data From Optical Satellite Sensorsmentioning
confidence: 99%
“…For spatially detailed comparisons of elevation we use the REMA DEM tile no. 32-19 with 8 m posting, covering Union Glacier (Howat et al, 2019). The dates of the image acquisitions for this tile range from January 2014 to December 2015.…”
Section: Topographic Data From Optical Satellite Sensorsmentioning
confidence: 99%
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“…R crust and R Ca-Na sea water correspond to the mean ratios (w/w) in the earth crust (R crust = 1.78) and in bulk sea water (R Ca-Na sea water = 0.038), respectively [39]. The nssSO 4 2− and ssNa + were calculated to obtain the nssSO 4 2− :ssNa + ratio, which has been shown as a valuable tool to enhance austral summer peaks and winter troughs [40].…”
Section: Ice Core Discrete Chemistrymentioning
confidence: 99%