A5038611877- Oceanographic and Atmospheric Processes
- Arctic and Antarctic ice dynamics
- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Marine and coastal ecosystems
- Geological Studies and Exploration
- Cryospheric studies and observations
- Isotope Analysis in Ecology
- Marine and environmental studies
- Environmental Monitoring and Data Management
- Hydrocarbon exploration and reservoir analysis
- Climate variability and models
- Winter Sports Injuries and Performance
- Atmospheric and Environmental Gas Dynamics
- Geological and Geophysical Studies
- Paleontology and Stratigraphy of Fossils
- Groundwater and Isotope Geochemistry
Bolin Centre for Climate Research
2022-2024
Stockholm University
2022-2024
Institut de Recherche pour le Développement
2020-2023
Centre National de la Recherche Scientifique
2020-2023
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques
2020-2023
Sorbonne Université
2020-2023
Dense, cold waters formed on Antarctic continental shelves descend along the margin, where they mix with other Southern Ocean to form Bottom Water (AABW). AABW then spreads into deepest parts of all major ocean basins, isolating heat and carbon from atmosphere for centuries. Despite AABW’s key role in regulating Earth’s climate long time scales recording conditions, remains poorly observed. This lack observational data is mostly due two factors. First, originates shelf slope situ...
Abstract We use new observations of stable water isotopes from a research cruise in early 2017 to highlight ocean‐ice interactions occurring under Filchner‐Ronne Ice Shelf, the largest Antarctic ice shelf. In particular, we investigate properties Shelf Water with temperature lower than surface freezing point, Filchner Depression. identify two main flavors emerging beneath which originate High Salinity end members distinct characteristics. Furthermore, these interact areas shelves different...
The Atlantic sector of the Southern Ocean is world's main production site Antarctic Bottom Water, a water-mass that ventilated at ocean surface before sinking and entraining older water-masses-ultimately replenishing abyssal global ocean. In recent decades, numerous attempts estimating rates ventilation overturning Water in this region have led to strikingly broad range results, with water transport-based calculations (8.4-9.7 Sv) yielding larger than tracer-based estimates (3.7-4.9 Sv)....
The hydrological cycle is expected to intensify in a warming climate. However, observational evidence of such changes the Southern Ocean difficult obtain due sparse measurements and complex superposition precipitation, sea ice, glacial meltwater. Here we disentangle these signals using dataset salinity seawater oxygen isotope observations collected Indian sector Ocean. Our results show that atmospheric water has intensified this region between 1993 2021, increasing subtropical surface waters...
Abstract. The characteristics of the CISE-LOCEAN seawater isotope dataset (δ18O, δ2H, referred to as δD) are presented (https://doi.org/10.17882/71186; Waterisotopes-CISE-LOCEAN, 2021). This covers time period from 1998 2021 and currently includes close 8000 data entries, all with δ18O, three-quarters them also δD, associated a date stamp, space usually salinity measurement. Until 2010, samples were analyzed by isotopic ratio mass spectrometry since then mostly cavity ring-down spectroscopy...
The Southern Ocean upper-layer freshwater balance exerts a global climatic influence by modulating density stratification and biological productivity, hence the exchange of heat carbon between atmosphere ocean interior. It is thus important to understand quantify time-varying inputs, which challenging from measurements salinity alone. Here we use seawater oxygen isotopes samples collected 2016 2021 along transect spanning Scotia northern Weddell Seas separate contributions sea ice meteoric...
Ocean acidification induced by the absorption of anthropogenic CO2 and its consequences pose a potential threat to marine ecosystems around globe. The Arctic Ocean, particularly vulnerable acidification, provides an ideal region investigate progression impacts before they manifest globally. Recent documentation undersaturated surface waters in carbonate minerals Sherard Osborn fjord northwest Greenland, visited for first time summer 2019, reveals inherent variability biogeochemical...
The Southern Ocean is undergoing rapid transformations, marked by significant regional shifts in salinity that carry widespread and irreversible consequences. While the most noticeable changes are observed upper ocean, deeper water masses have been identified expected to intensify over time. Changes upper-ocean mass can be influenced multiple drivers, play a crucial role changing ocean dynamics. However, underlying causes of these characteristic remain poorly understood. In this study, we...
The Atlantic sector of the Southern Ocean is world’s main production site Antarctic Bottom Water, a water-mass that ventilated at ocean surface before sinking and entraining older water-masses – ultimately replenishing abyssal global ocean. In recent decades, numerous attempts estimating rates ventilation overturning Water in this region have led to strikingly broad range results, with water transport-based calculations (8.4-9.7 Sv) yielding larger than tracer-based estimates (3.7-4.9 Sv)....
Abstract The hydrological cycle is expected to intensify in a warming climate. However, observational evidence of such changes the Southern Ocean difficult obtain due sparse measurements and complex superposition precipitation, sea ice, glacial meltwater. We here disentangle these signals using unique dataset salinity seawater oxygen isotope observations collected Indian sector Ocean. Our results show that atmospheric water has intensified this region between 1993 2021, increasing...
Abstract. The characteristics of the CISE-LOCEAN sea water isotope data set (δ18O, δ2H, later designed as δD) are presented. This covers time period from 1998 to 2021 and currently includes close 8000 entries, all with δ18O, three quarters them also δD, associated a space stamp usually salinity measurement. Until 2010, samples were analysed by isotopic ratio mass spectrometry, since then mostly cavity ring-down spectroscopy (CRDS). Instrumental uncertainty on individual in this dataset is...