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| Morisset, S.; Reverdin, Gilles; Boutin, Jacqueline; Martin, N.; Yin, X.; Gaillard, Fabienne; Blouch, Pierre; Rolland, J.; Font, J; Salvador, J.. |
| Tipo: Text |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00114/22552/20240.pdf |
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| Reverdin, Gilles; Morisset, S.; Boutin, Jacqueline; Martin, Nicolas; Sena-martins, M.; Gaillard, Fabienne; Blouch, P.; Rolland, J.; Font, J.; Salvador, J.; Fernandez, Pili; Stammer, D.. |
| Salinity measurements from 119 surface drifters in 2007-12 were assessed; 80% [Surface Velocity Program with a barometer with a salinity sensor (SVP-BS)] and 75% [SVP with salinity (SVP-S)] of the salinity data were found to be usable, after editing out some spikes. Sudden salinity jumps are found in drifter salinity records that are not always associated with temperature jumps, in particular in the wet tropics. A method is proposed to decide whether and how to correct those jumps, and the uncertainty in the correction applied. Northeast of South America, in a region influenced by the Amazon plume and fresh coastal water, drifter salinity is very variable, but a comparison with data from the Soil Moisture and Ocean Salinity satellite suggests that this... |
| Tipo: Text |
Palavras-chave: Surface observations; Surface layer; Data quality control; Buoy observations. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00190/30095/28748.pdf |
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| Boutin, Jacqueline; Martin, Nicolas; Reverdin, Gilles; Morisset, S.; Yin, X.; Centurioni, L.; Reul, Nicolas. |
| We study the signature of rainfall on S1cm, the sea surface salinity retrieved from the Soil Moisture and Ocean Salinity (SMOS) satellite mission first by comparing SMOS S1cm with ARGO sea surface salinity measured at about 5 m depth in the Intertropical Convergence Zone (ITCZ) and in the Southern Pacific Convergence Zone; second by investigating spatial variability of SMOS S1cm related to rainfall. The resulting estimated S1cm decrease associated with rainfall occurring within less than 1 h from the salinity measurement is close to −0.2 pss (mm h−1) −1. We estimate that rain induced roughness and atmospheric effects are responsible for no more than 20% of this value. We also study the signature of rainfall on sea surface salinity measured by surface... |
| Tipo: Text |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00206/31735/30139.pdf |
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| Reverdin, Gilles; Morisset, S.; Bellenger, H.; Boutin, J.; Martin, N.; Blouch, P.; Rolland, Jean; Gaillard, Fabienne; Bouruet-aubertot, P.; Ward, B.. |
| This study describes how the hull temperature (Ttop) measurements from multisensor surface velocity program (SVP) drifters can be combined with other measurements to provide quantitative information on near-surface vertical temperature stratification during large daily cycles. First, Ttop is compared to the temperature measured at 17 -cm depth from a float tethered to the SVP drifter. These 2007-12 SVP drifters present a larger daily cycle by 1%-3% for 1 degrees-2 degrees C daily cycle amplitudes, with a maximum difference close to the local noon. The difference could result from flow around the SVP drifter in the presence of temperature stratification in the top 20 cm of the water column but also from a small influence of internal drifter temperature on... |
| Tipo: Text |
Palavras-chave: Sea surface temperature; Buoy observations. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00155/26589/24720.pdf |
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| Bourras, D.; Branger, H.; Reverdin, Gilles; Marie, Louis; Cambra, R.; Baggio, L.; Caudoux, C.; Caudal, G.; Morisset, S.; Geyskens, N.; Weill, Alain; Hauser, D.. |
| The present paper describes a new type of floating platform that was specifically designed for estimating air–sea fluxes, investigating turbulence characteristics in the atmospheric surface boundary layer, and studying wind–wave interactions. With its design, it can be deployed in the open ocean or in shallow-water areas. The system is designed to be used from a research vessel. It can operate for ~10 h as a drifting wave rider and 3 h under power. Turbulence and meteorological instrument packages are placed at a low altitude (1–1.5 m). It was deployed for validation purposes during the Front de Marée, Variabilité (FROMVAR), 2011 experiment off the west coast of Brittany, France. Wind friction velocity and surface turbulent buoyancy flux were estimated... |
| Tipo: Text |
Palavras-chave: In situ atmospheric observations; Surface observations; In situ oceanic observations. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00192/30283/28759.pdf |
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