The Multi-Compartment Hg Modeling and Analysis Project (MCHgMAP): Mercury modeling to support international environmental policy DOI Creative Commons
Ashu Dastoor, Hélène Angot, Johannes Bieser

et al.

Published: May 24, 2024

Abstract. The Multi-Compartment Hg (mercury) Modeling and Analysis Project (MCHgMAP) is an international multi-model research initiative intended to simulate analyze the geospatial distributions temporal trends of environmental inform effectiveness evaluations two multilateral agreements (MEAs): Minamata Convention on Mercury (MC) Long-Range Transboundary Air Pollution (LRTAP). This MCHgMAP overview paper presents its science objectives, background rationale, experimental design (multi-model ensemble (MME) architecture, inputs evaluation data, simulations reporting framework), methodologies for analysis simulated levels. primary goals project are facilitate detection attribution recent (observed) future (projected) spatial patterns global levels, identification key knowledge gaps in modeling improve cycles MEAs. current advances challenges models, emission inventories, observational data examined, optimized introduced addressing policy questions A common set emissions, conditions, observation datasets proposed (where possible) enhance MME comparability. novel harmonized simulation approach between atmospheric, land, oceanic multi-media models developed account short- long-term changes secondary exchanges achieve mechanistic consistency levels across matrices. comprehensive model experiments prioritized ensure a systematic participation variety from scientific community.

Language: Английский

Global mercury impact synthesis: Processes in the Southern Hemisphere DOI Open Access
Celia Y. Chen, David C. Evers

AMBIO, Journal Year: 2023, Volume and Issue: 52(5), P. 827 - 832

Published: March 14, 2023

Language: Английский

Citations

5
Fire, volcanism and climate change: the main factors controlling mercury (Hg) accumulation rates in Tropical Lake Lantoa, Sulawesi, Indonesia (∼16,500–540 cal yr BP) DOI Creative Commons

Jalene Nalbant,

Larissa Schneider, Rebecca Hamilton

et al.

Frontiers in Environmental Chemistry, Journal Year: 2023, Volume and Issue: 4

Published: Oct. 23, 2023

The effects of climate change on long-term mercury (Hg) cycling are still not well understood, as changes usually gradual and can only be assessed using high-resolution archives. Our study site (a small, lowland tectonic lake in Sulawesi, Indonesia) provides a unique opportunity to further understanding Hg the Southeast Asian (SEA) tropics during transition from Pleistocene Holocene, period significant variability. We present record Late Glacial Holocene deposition within sediments tropical Lake Lantoa, Sulawesi. Using multi-proxy framework (including pollen, charcoal, carbon:nitrogen ratio geochemistry records) we investigate response accumulation rates (HgAR) shifts between ∼16,488 538 cal BP. This encompasses Bølling-Allerød (BA) warming, Younger Dryas (YD) cooling warming events, providing new insights into global climatic transitions HgAR SEA sediments. Termination had highest substantial variability (µ = 11.32, 5.38–33.91 μg m −2 yr −1 ), when drier conditions high charcoal suggest that fire activity was main source lake. Transition marked by decrease 8, 3.50–18.84 ) humid precluded forest burning, followed 11.35, 3.30–158.32 Early Holocene. Mercury rate 3.80, 1,67–43.65 lowest Lantoa record, events stable catchment. An increase ratios coupled with HgAR, suggests establishment resulted suppressed erosion/leaching. results demonstrate fires, vegetation volcanism important drivers inputs relationship which is strongly mediated lake-catchment dynamics.

Language: Английский

Citations

5
Over a decade of atmospheric mercury monitoring at Amsterdam Island in the French Southern and Antarctic Lands DOI Creative Commons
Olivier Magand, Hélène Angot, Yann Bertrand

et al.

Scientific Data, Journal Year: 2023, Volume and Issue: 10(1)

Published: Nov. 28, 2023

The Minamata Convention, a global and legally binding treaty that entered into force in 2017, aims to protect human health the environment from harmful mercury (Hg) effects by reducing anthropogenic Hg emissions environmental levels. Conference of Parties is periodically evaluate Convention's effectiveness, starting 2023, using existing monitoring data observed trends. Monitoring atmospheric levels has been proposed as key indicator. However, gaps exist, especially Southern Hemisphere. Here, we present over decade at Amsterdam Island (37.80°S, 77.55°E), remote southern Indian Ocean. Datasets include gaseous elemental oxidised species ambient air concentrations either active/continuous or passive/discrete acquisition methods, annual total wet deposition fluxes. These datasets are made available community support policy-making further scientific advancements.

Language: Английский

Citations

4
Regional variation in fish mercury DOI
Amina T. Schartup, C. Anela Choy

Nature Food, Journal Year: 2024, Volume and Issue: 5(10), P. 807 - 808

Published: Oct. 7, 2024

Language: Английский

Citations

1
The Multi-Compartment Hg Modeling and Analysis Project (MCHgMAP): Mercury modeling to support international environmental policy DOI Creative Commons
Ashu Dastoor, Hélène Angot, Johannes Bieser

et al.

Published: May 24, 2024

Abstract. The Multi-Compartment Hg (mercury) Modeling and Analysis Project (MCHgMAP) is an international multi-model research initiative intended to simulate analyze the geospatial distributions temporal trends of environmental inform effectiveness evaluations two multilateral agreements (MEAs): Minamata Convention on Mercury (MC) Long-Range Transboundary Air Pollution (LRTAP). This MCHgMAP overview paper presents its science objectives, background rationale, experimental design (multi-model ensemble (MME) architecture, inputs evaluation data, simulations reporting framework), methodologies for analysis simulated levels. primary goals project are facilitate detection attribution recent (observed) future (projected) spatial patterns global levels, identification key knowledge gaps in modeling improve cycles MEAs. current advances challenges models, emission inventories, observational data examined, optimized introduced addressing policy questions A common set emissions, conditions, observation datasets proposed (where possible) enhance MME comparability. novel harmonized simulation approach between atmospheric, land, oceanic multi-media models developed account short- long-term changes secondary exchanges achieve mechanistic consistency levels across matrices. comprehensive model experiments prioritized ensure a systematic participation variety from scientific community.

Language: Английский

Citations

1