|
|
|
|
|
| Coppola, L.; Prieur, L.; Taupier-letage, I.; Estournel, C.; Testor, P.; Lefevre, D.; Belamari, S.; Le Reste, Serge; Taillandier, V.. |
| During the winter 2013, an intense observation and monitoring was performed in the north-western Mediterranean Sea to study deep water formation process that drives thermohaline circulation and biogeochemical processes (HYMEX SOP2 and DEWEX projects). To observe intensively and continuously the impact of deep convection on oxygen (O2) ventilation, an observation strategy was based on the enhancement of the Argo-O2 floats to monitor the offshore dense water formation area (DWF) in the Gulf of Lion prior to and at the end of the convective period (December 2012 to April 2013). The intense O2 measurements performed through shipborne CTD casts and Argo-O2 floats deployment revealed an O2 inventory rapidly impacted by mixed layer (ML) deepening on the month... |
| Tipo: Text |
Palavras-chave: Dense water formation; North-western Mediterranean Sea; Dissolved oxygen; Argo floats; Deep water ventilation. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00395/50594/51311.pdf |
| |
|
|
| Stott, Lowell D; Shao, Jun; Yu, Jimin; Harazin, Kathleen M. |
| The prevailing hypothesis to explain pCO2 rise at the last glacial termination calls upon enhanced ventilation of excess respired carbon that accumulated in the deep sea during the glacial. Recent studies argue lower [O2] in the glacial ocean is indicative of increased carbon respiration. The magnitude of [O2] depletion was 100–140 µ mol/kg at the glacial maximum. Because respiration is coupled to δ13C of dissolved inorganic carbon (DIC), [O2] depletion of 100–140 µ mol/kg from carbon respiration would lower deep water δ13CDIC by ∼1‰ relative to surface water. Prolonged sequestration of respired carbon would also lower the amount of 14C in the deep sea. We show that Pacific Deep Water δ13CDIC did not decrease relative to the surface ocean and Δ14C was only... |
| Tipo: Text |
Palavras-chave: Carbon isotope proxies; Carbon respiration hypothesis; Deep water ventilation; Glacial pCO2. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00682/79437/82043.pdf |
| |
|
|
|
