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July 29, 2026Proceedings of the National Academy of Sciences

Climate warming and atmospheric deposition jointly accelerate the Antarctic Peninsula atmosphere–glacier–land–ocean mercury loop

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Authors

CZChengzhen ZhouМLМaodian LiuQZQianru Zhang

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Overview

Randomized trial shows increased mercury pollution in Antarctica, highlighting environmental risks in warming regions.

Key Points

  • This research aims to understand how climate warming and atmospheric deposition impact mercury dynamics in the Antarctic Peninsula.
  • Reconstructed 200 years of mercury source-sink dynamics using geochemical and isotopic records from 16 sediment cores.
  • Developed an observation-constrained multimedia mercury budget model to analyze responses to environmental changes.
  • Analyzed accumulation rates of mercury and the effects of climate change on pollutant cycles.
  • Modern accumulation rate of mercury in the Antarctic Peninsula is 93 ± 58 µg m −2 y −1, twice the global average.
  • Since industrialization, mercury accumulation has increased by 160% in the region, indicating a significant pollution hotspot.
  • Climate warming has activated the atmosphere–glacier–land–ocean loop, increasing terrestrial mercury release by 550% and air-sea exchange by 350%.

Cite This Study

Zhou et al. (2026) studied this question.

synapsesocial.com/papers/6a69a2aec8da07d9defa672ahttps://doi.org/10.1073/pnas.2613472123
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Also Consider

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  1. 1Mercury deposition and bioaccumulation influenced by sea ice variability in coastal Antarctic ecosystems2024
  2. 2Mercury Behaviour and Pathways in Antarctic Periglacial Soils (King George Island)2026
  3. 3Climate‐Induced Variability in Sedimentary Mercury Deposition in the Southern Scotia Sea, Antarctic Zone, Over the Last 35 Kyr2025
  4. 4Modeling the Mercury Cycle in the Sea Ice Environment: A Buffer between the Polar Atmosphere and Ocean2024
  5. 5Long-term mercury accumulation and climate reconstruction of an Australian alpine lake during the late Quaternary2024 · 2 citations