Zobrazeno 1 - 10 of 73 pro vyhledávání: '"Nicolas Caillon"'
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Akademický článek
Sunlight-driven nitrate loss records Antarctic surface mass balance
Autor: Pete D. Akers, Joël Savarino, Nicolas Caillon, Aymeric P. M. Servettaz, Emmanuel Le Meur, Olivier Magand, Jean Martins, Cécile Agosta, Peter Crockford, Kanon Kobayashi, Shohei Hattori, Mark Curran, Tas van Ommen, Lenneke Jong, Jason L. Roberts
Publikováno v: Nature Communications, Vol 13, Iss 1, Pp 1-10 (2022)
Snow accumulation rates in Antarctica can now be reconstructed from nitrate isotopes in snow and ice. This independent technique offers scientists a new tool for studying how Antarctic climate changed in the past and how it may change in the future.
Externí odkaz: https://doaj.org/article/004c3e11af0647498236ba8618a746bd
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2
Photolytic modification of seasonal nitrate isotope cycles in East Antarctica
Autor: Pete D. Akers, Joël Savarino, Nicolas Caillon, Olivier Magand, Emmanuel Le Meur
Publikováno v: eISSN
Atmospheric Chemistry and Physics
Nitrate in Antarctic snow has seasonal cycles in its nitrogen and oxygen isotopic ratios that reflect its sources and atmospheric formation processes, and as a result, nitrate archived in Antarctic ice should have great potential to record atmospheri
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abe93c3a205c729392e0f4ed21ab64ca
https://doi.org/10.5194/acp-22-15637-2022
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4
An extraction method for nitrogen isotope measurement of ammonium in low concentrated environment
Autor: Alexis Lamothe, Joel Savarino, Patrick Ginot, Lison Soussaintjean, Elsa Gautier, Pete D. Akers, Nicolas Caillon, Joseph Erbland
Ammonia (NH3) participates in nucleation and growth of aerosols and thus plays a major role in atmospheric transparency, pollution, health, and climate related issues. Understanding its emission sources through nitrogen stable isotopes is therefore a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c0c238823baea6283560e14f54a013db
https://doi.org/10.5194/egusphere-2023-481
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5
Hydrogeological proxies of urban weathered hard rock aquifers in Central Africa: Contribution for a sustainable water management and supply in high populated city
Autor: Enoh Jeanot Fongoh, Helene Celle, Bertil Nlend, Suzanne Ngo Boum-Nkot, Ako Andrew Ako, Frederic Huneau, Nicolas Caillon, Marie Joseph Ntamak-Nida
Shallow groundwater resources, especially in hard rock environment, constitute an important part of urban water supply in developing countries, appropriate to the low level of economic development. However, increasing urban population and dependence
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dbd24785c2881ea89a10534d97d5c03c
https://doi.org/10.5194/egusphere-egu23-130
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7
Diurnal variations in oxygen and nitrogen isotopes of atmospheric nitrogen dioxide and nitrate: implications for tracing NOx oxidation pathways and emission sources
Autor: Sarah Albertin, Joël Savarino, Slimane Bekki, Albane Barbero, Roberto Grilli, Quentin Fournier, Irène Ventrillard, Nicolas Caillon, Kathy Law
Publikováno v: Atmospheric Chemistry and Physics Discussions
Atmospheric Chemistry and Physics Discussions, In press, ⟨10.5194/egusphere-2023-744⟩
eISSN
The oxygen (𝛥17O) and nitrogen (𝛿15N) isotopic compositions of atmospheric nitrate (NO3-) are widely used as tracers of its formation pathways, precursor (nitrogen oxides NOx = nitric oxide NO + nitrogen NO2) emission sources, and physico-chemi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::889b1e186db8ec9792acff3d959a415b
https://doi.org/10.5194/egusphere-2023-744
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8
Summer variability of the atmospheric NO2 :  NO ratio at Dome C on the East Antarctic Plateau
Autor: Albane Barbero, Roberto Grilli, Markus M. Frey, Camille Blouzon, Detlev Helmig, Nicolas Caillon, Joël Savarino
Previous Antarctic summer campaigns have shown unexpectedly high levels of oxidants in the lower atmosphere of the continental plateau and at coastal regions, with atmospheric hydroxyl radical (OH) concentrations up to 4 × 106 cm−3. Such high reac
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09dbfd1c30735ecaef1ceba9575b97f9
https://acp.copernicus.org/articles/22/12025/2022/
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9
Measurement report: Nitrogen isotopes (δ15N) and first quantification of oxygen isotope anomalies (Δ17O, δ18O) in atmospheric nitrogen dioxide
Autor: Slimane Bekki, Sarah Albertin, Joel Savarino, Albane Barbero, Nicolas Caillon
Publikováno v: Atmospheric Chemistry and Physics. 21:10477-10497
The isotopic composition of nitrogen and oxygen in nitrogen dioxide (NO2) potentially carries a wealth of information about the dynamics of the nitrogen oxides (NOx = nitric oxide (NO) + NO2) chemistry in the atmosphere. While nitrogen isotopes of NO
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::800c1f2b52af73cfd5838f96f1c95d02
https://doi.org/10.5194/acp-21-10477-2021
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