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| Thyssen, M.; Alvain, S.; Lefebvre, Alain; Dessailly, D.; Rijkeboer, M.; Guiselin, N.; Creach, V.; Artigas, L-f. |
| Phytoplankton observation in the ocean can be a challenge in oceanography. Accurate estimations of its biomass and dynamics will help to understand ocean ecosystems and refine global climate models. Relevant data sets of phytoplankton defined at a functional level and on a submeso- and daily scale are thus required. In order to achieve this, an automated, high-frequency, dedicated scanning flow cytometer (SFC, Cytobuoy b.v., the Netherlands) has been developed to cover the entire size range of phytoplankton cells whilst simultaneously taking pictures of the largest of them. This cytometer was directly connected to the water inlet of a PocketFerryBox during a cruise in the North Sea, 08-12 May 2011 (DYMAPHY project, INTERREG IV A "2 Seas"), in order to... |
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| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00471/58256/60766.pdf |
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| Rousselet, L.; Doglioli, A.m.; De Verneil, A.; Pietri, A.; Della Penna, A.; Berline, L.; Marrec, P.; Grégori, G.; Thyssen, M.; Carlotti, F.; Barillon, S.; Simon‐bot, F.; Bonal, M.; D'Ovidio, F.; Petrenko, A.. |
| Vertical velocities can be estimated indirectly from in situ observations by theoretical frameworks like the ω‐equation. Direct measures of vertical exchanges are challenging due to their typically ephemeral spatiotemporal scales. In this study we address this problem with an adaptive sampling strategy coupling various biophysical instruments. We analyze the 3‐D organization of a cyclonic mesoscale structure finely sampled during the OSCAHR (Observing Submesoscale Coupling At High Resolution) cruise in the Ligurian Sea during fall 2015. The observations, acquired with a Moving Vessel Profiler (MVP), highlight a subsurface low‐salinity layer (≃ 50 m), as well as rising isopycnals, generated by geostrophic cyclonic circulation, in the structure's center.... |
| Tipo: Text |
Palavras-chave: High-resolution reconstructions of 3-D fields; Vertical velocities estimated with omega-equation; Particle distribution as a tracer for vertical advection. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00490/60214/63567.pdf |
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