High snow accumulation on Amundsen Sea coastal ice rise, West Antarctica

Sang Bum Hong; Yalalt Nyamgerel; Won Sang Lee; Jeonghoon Lee

doi:10.24425/ppr.2023.145440

High snow accumulation on Amundsen Sea coastal ice rise, West Antarctica

Sang Bum Hong, Yalalt Nyamgerel, Won Sang Lee, Jeonghoon Lee

Department of Science Education

Research output: Contribution to journal › Article › peer-review

Abstract

Polar snow and its accumulation preserve valuable information derived from the atmosphere on past climate and environmental changes in high resolution, particularly in coastal sites. A 2.5-m snow-pit was excavated from the coastal ice rise (Moore Dome) near Amundsen Sea region in February 2012. This study evaluated the isotopic and chemical compositions in the snow-pit and compared them with meteorological variables. Based on the seasonal peaks of the MSA and nssSO₄^2– together with δ¹⁸O, δD, and d-excess, the snow-pit record was corresponded to accumulation during austral winter 2011 to summer 2011/2012. The annual mean accumulation rate was assumed thus to be as large as or even higher than 1.03 m w.e. yr^–1 at this site. A relatively warm winter temperature in 2011 was traceable in the variations of δ¹⁸O, δD, and d-excess. This study emphasizes the importance of the high snow accumulation observed at this site in providing valuable information on sub-annual variations in climate and environmental changes through the study of longer ice cores.

Original language	English
Pages (from-to)	365-384
Number of pages	20
Journal	Polish Polar Research
Volume	44
Issue number	4
DOIs	https://doi.org/10.24425/ppr.2023.145440
State	Published - 2023

Bibliographical note

Publisher Copyright:
© 2023 Sang-Bum Hong, Yalalt Nyamgerel, Won Sang Lee and Jeonghoon Lee. This is an open access article under the CC BY license http://creativecommons.org/licenses/by/4.0/), which permits use, distribution, and reproduction in any medium, provided that the article is properly cited.

Keywords

Antarctica
Bear Peninsula
Moore Dome
snow-pit

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.24425/ppr.2023.145440

Cite this

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title = "High snow accumulation on Amundsen Sea coastal ice rise, West Antarctica",

abstract = "Polar snow and its accumulation preserve valuable information derived from the atmosphere on past climate and environmental changes in high resolution, particularly in coastal sites. A 2.5-m snow-pit was excavated from the coastal ice rise (Moore Dome) near Amundsen Sea region in February 2012. This study evaluated the isotopic and chemical compositions in the snow-pit and compared them with meteorological variables. Based on the seasonal peaks of the MSA and nssSO42– together with δ18O, δD, and d-excess, the snow-pit record was corresponded to accumulation during austral winter 2011 to summer 2011/2012. The annual mean accumulation rate was assumed thus to be as large as or even higher than 1.03 m w.e. yr–1 at this site. A relatively warm winter temperature in 2011 was traceable in the variations of δ18O, δD, and d-excess. This study emphasizes the importance of the high snow accumulation observed at this site in providing valuable information on sub-annual variations in climate and environmental changes through the study of longer ice cores.",

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year = "2023",

doi = "10.24425/ppr.2023.145440",

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AU - Hong, Sang Bum

AU - Nyamgerel, Yalalt

AU - Lee, Won Sang

AU - Lee, Jeonghoon

N1 - Publisher Copyright: © 2023 Sang-Bum Hong, Yalalt Nyamgerel, Won Sang Lee and Jeonghoon Lee. This is an open access article under the CC BY license http://creativecommons.org/licenses/by/4.0/), which permits use, distribution, and reproduction in any medium, provided that the article is properly cited.

PY - 2023

Y1 - 2023

N2 - Polar snow and its accumulation preserve valuable information derived from the atmosphere on past climate and environmental changes in high resolution, particularly in coastal sites. A 2.5-m snow-pit was excavated from the coastal ice rise (Moore Dome) near Amundsen Sea region in February 2012. This study evaluated the isotopic and chemical compositions in the snow-pit and compared them with meteorological variables. Based on the seasonal peaks of the MSA and nssSO42– together with δ18O, δD, and d-excess, the snow-pit record was corresponded to accumulation during austral winter 2011 to summer 2011/2012. The annual mean accumulation rate was assumed thus to be as large as or even higher than 1.03 m w.e. yr–1 at this site. A relatively warm winter temperature in 2011 was traceable in the variations of δ18O, δD, and d-excess. This study emphasizes the importance of the high snow accumulation observed at this site in providing valuable information on sub-annual variations in climate and environmental changes through the study of longer ice cores.

AB - Polar snow and its accumulation preserve valuable information derived from the atmosphere on past climate and environmental changes in high resolution, particularly in coastal sites. A 2.5-m snow-pit was excavated from the coastal ice rise (Moore Dome) near Amundsen Sea region in February 2012. This study evaluated the isotopic and chemical compositions in the snow-pit and compared them with meteorological variables. Based on the seasonal peaks of the MSA and nssSO42– together with δ18O, δD, and d-excess, the snow-pit record was corresponded to accumulation during austral winter 2011 to summer 2011/2012. The annual mean accumulation rate was assumed thus to be as large as or even higher than 1.03 m w.e. yr–1 at this site. A relatively warm winter temperature in 2011 was traceable in the variations of δ18O, δD, and d-excess. This study emphasizes the importance of the high snow accumulation observed at this site in providing valuable information on sub-annual variations in climate and environmental changes through the study of longer ice cores.

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ER -

High snow accumulation on Amundsen Sea coastal ice rise, West Antarctica

Abstract

Bibliographical note

Keywords

UN SDGs

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