Brief communication: Spatial and temporal variations in surface snow chemistry along a traverse from coastal East Antarctica to the ice sheet summit (Dome A)

G. Shi; G. Shi; H. Ma; Z. Hu; Z. Chen; C. An; S. Jiang; Y. Li; T. Ma; J. Yu; D. Wang; S. Lu; B. Sun; M. G. Hastings; M. G. Hastings

doi:10.5194/tc-15-1087-2021

The Cryosphere (Mar 2021)

Brief communication: Spatial and temporal variations in surface snow chemistry along a traverse from coastal East Antarctica to the ice sheet summit (Dome A)

G. Shi,
G. Shi,
H. Ma,
Z. Hu,
Z. Chen,
C. An,
S. Jiang,
Y. Li,
T. Ma,
J. Yu,
D. Wang,
S. Lu,
B. Sun,
M. G. Hastings,
M. G. Hastings

Affiliations

G. Shi: Key Laboratory of Geographic Information Science (Ministry of Education), School of Geographic Sciences and State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
G. Shi: Polar Research Institute of China, Shanghai 200062, China
H. Ma: Polar Research Institute of China, Shanghai 200062, China
Z. Hu: Polar Research Institute of China, Shanghai 200062, China
Z. Chen: Key Laboratory of Geographic Information Science (Ministry of Education), School of Geographic Sciences and State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
C. An: Polar Research Institute of China, Shanghai 200062, China
S. Jiang: Polar Research Institute of China, Shanghai 200062, China
Y. Li: Polar Research Institute of China, Shanghai 200062, China
T. Ma: Polar Research Institute of China, Shanghai 200062, China
J. Yu: Polar Research Institute of China, Shanghai 200062, China
D. Wang: Key Laboratory of Geographic Information Science (Ministry of Education), School of Geographic Sciences and State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
S. Lu: Polar Research Institute of China, Shanghai 200062, China
B. Sun: Polar Research Institute of China, Shanghai 200062, China
M. G. Hastings: Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, Rhode Island 02912, USA
M. G. Hastings: Institute at Brown for Environment and Society, Brown University, Providence, Rhode Island 02912, USA

DOI: https://doi.org/10.5194/tc-15-1087-2021
Journal volume & issue: Vol. 15
pp. 1087 – 1095

Abstract

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To better understand snow chemistry in different environments across the Antarctic ice sheet, we investigated snow ions on a traverse from the coast to Dome A. Results show that the non-sea-salt (nss) fractions of K+, Mg2+, and Ca2+ are mainly from terrestrial particle mass and nssCl− is associated with HCl. Spatially, the non-sea-salt fractions of ions to the totals are higher in the interior areas than on the coast, and seasonally, the proportions are higher in summer than in winter. Negative nssSO42- on the coast indicates sea salts from the sea ice, and marine biogenic emissions dominate snow SO42- in interior areas throughout the year.

Published in The Cryosphere

ISSN: 1994-0416 (Print); 1994-0424 (Online)
Publisher: Copernicus Publications
Country of publisher: Germany
LCC subjects: Geography. Anthropology. Recreation: Environmental sciences; Science: Geology
Website: http://www.the-cryosphere.net/

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