Search Results - "Angot, Hélène"
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Global change effects on biogeochemical mercury cycling
Published in Ambio (01-05-2023)“…Past and present anthropogenic mercury (Hg) release to ecosystems causes neurotoxicity and cardiovascular disease in humans with an estimated economic cost of…”
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Seasonal Variation of Mercury and Its Isotopes in Atmospheric Particles at the Coastal Zhongshan Station, Eastern Antarctica
Published in Environmental science & technology (15-09-2020)“…Mercury (Hg) is a globally spread trace metal due to its long atmospheric residence time. Yet, our understanding of atmospheric processes (e.g., redox…”
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3
Arctic atmospheric mercury: Sources and changes
Published in The Science of the total environment (15-09-2022)“…Global anthropogenic and legacy mercury (Hg) emissions are the main sources of Arctic Hg contamination, primarily transported there via the atmosphere. This…”
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A central arctic extreme aerosol event triggered by a warm air-mass intrusion
Published in Nature communications (08-09-2022)“…Frequency and intensity of warm and moist air-mass intrusions into the Arctic have increased over the past decades and have been related to sea ice melt…”
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Global and Local Impacts of Delayed Mercury Mitigation Efforts
Published in Environmental science & technology (20-11-2018)“…Mercury (Hg) is emitted to air by natural and anthropogenic sources, transports and deposits globally, and bioaccumulates to toxic levels in food webs. It is…”
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Mercury Benefits of Climate Policy in China: Addressing the Paris Agreement and the Minamata Convention Simultaneously
Published in Environmental science & technology (04-02-2020)“…National commitments under the Paris Agreement on climate change interact with other global environmental objectives, such as those of the Minamata Convention…”
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What are the likely changes in mercury concentration in the Arctic atmosphere and ocean under future emissions scenarios?
Published in The Science of the total environment (25-08-2022)“…Arctic mercury (Hg) concentrations respond to changes in anthropogenic Hg emissions and environmental change. This manuscript, prepared for the 2021 Arctic…”
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Atmospheric mercury in the Southern Hemisphere – Part 2: Source apportionment analysis at Cape Point station, South Africa
Published in Atmospheric chemistry and physics (08-09-2020)“…Mercury (Hg) contamination is ubiquitous. In order to assess its emissions, transport, atmospheric reactivity, and deposition pathways, worldwide Hg monitoring…”
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The Marginal Ice Zone as a dominant source region of atmospheric mercury during central Arctic summertime
Published in Nature communications (14-08-2023)“…Atmospheric gaseous elemental mercury (GEM) concentrations in the Arctic exhibit a clear summertime maximum, while the origin of this peak is still a matter of…”
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10
Impact of dam flushing operations on sediment dynamics and quality in the upper Rhône River, France
Published in Journal of environmental management (01-02-2020)“…The Rhône River (France) has been used for energy production for decades and 21 dams have been built. To avoid problems due to sediment storage, dam flushing…”
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11
Evidence that Pacific tuna mercury levels are driven by marine methylmercury production and anthropogenic inputs
Published in Proceedings of the National Academy of Sciences - PNAS (11-01-2022)“…Pacific Ocean tuna is among the most-consumed seafood products but contains relatively high levels of the neurotoxin methylmercury. Limited observations…”
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Widespread detection of chlorine oxyacids in the Arctic atmosphere
Published in Nature communications (30-03-2023)“…Chlorine radicals are strong atmospheric oxidants known to play an important role in the depletion of surface ozone and the degradation of methane in the…”
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Large contribution of biomass burning emissions to ozone throughout the global remote troposphere
Published in Proceedings of the National Academy of Sciences - PNAS (28-12-2021)“…Ozone is the third most important anthropogenic greenhouse gas after carbon dioxide and methane but has a larger uncertainty in its radiative forcing, in part…”
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Exploring Drivers of Historic Mercury Trends in Beluga Whales Using an Ecosystem Modeling Approach
Published in ACS Environmental Au (18-09-2024)“…While mercury occurs naturally in the environment, human activity has significantly disturbed its biogeochemical cycle. Inorganic mercury entering aquatic…”
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Multi-year record of atmospheric mercury at Dumont d'Urville, East Antarctic coast: continental outflow and oceanic influences
Published in Atmospheric chemistry and physics (08-07-2016)“…Under the framework of the Global Mercury Observation System (GMOS) project, a 3.5-year record of atmospheric gaseous elemental mercury (Hg(0)) has been…”
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Atmospheric mercury in the Southern Hemisphere – Part 1: Trend and inter-annual variations in atmospheric mercury at Cape Point, South Africa, in 2007–2017, and on Amsterdam Island in 2012–2017
Published in Atmospheric chemistry and physics (02-07-2020)“…The Minamata Convention on Mercury (Hg) entered into force in 2017, committing its 116 parties (as of January 2019) to curb anthropogenic emissions. Monitoring…”
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Understanding mercury oxidation and air–snow exchange on the East Antarctic Plateau: a modeling study
Published in Atmospheric chemistry and physics (05-11-2018)“…Distinct diurnal and seasonal variations of mercury (Hg) have been observed in near-surface air at Concordia Station on the East Antarctic Plateau, but the…”
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Atmospheric biogenic volatile organic compounds in the Alaskan Arctic tundra: constraints from measurements at Toolik Field Station
Published in Atmospheric chemistry and physics (02-11-2022)“…The Arctic is a climatically sensitive region that has experienced warming at almost 3 times the global average rate in recent decades, leading to an increase…”
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A full year of aerosol size distribution data from the central Arctic under an extreme positive Arctic Oscillation: insights from the Multidisciplinarydrifting Observatory for the Study of Arctic Climate (MOSAiC) expedition
Published in Atmospheric chemistry and physics (11-01-2023)“…The Arctic environment is rapidly changing due to accelerated warming in the region. The warming trend is driving a decline in sea ice extent, which thereby…”
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Mercury in precipitated and surface snow at Dome C and a first estimate of mercury depositional fluxes during the Austral summer on the high Antarctic plateau
Published in Atmospheric environment (1994) (01-10-2021)“…The role of deposition fluxes on the mercury cycle at Concordia station, on the high Antarctic plateau have been investigated over the Austral summer between…”
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