Simon Morisset's research while affiliated with Laval University and other places

... Data for this project come from three publicly available δ 18 O sw databases. We utilize data from the NASA GISS Seawater Oxygen-18 Database, GEOTRACES, and L'OCEAN, along with recent data from the tropical Pacific (Anderson et al., 2014;Conroy et al., 2017;Reverdin et al., 2022;Schmidt et al., 1999). We select samples with only paired δ 18 O sw and salinity measurements (N = 11,119) for the 1° × 1° gridded neural network interpolations ( Figure 1). ...

... Il est possible de calculer le profil d'atténuation de l'onde électromagnétique dans l'océan. Ce profil d'atténuation exponentiel dépend de la pulsation et de la partie imaginaire de l'indice de réfraction ([Dinnat, 2003] ; [Martin, 2013] ...

... The second research campaign was the Sub-Tropical Atlantic Surface Salinity Experiment (STRASSE), which took place from 21 August to 9 September 2012, as part of the Salinity Processes in the Upper-ocean Regional Study (SPURS) campaign. The main objective of this cruise was to study the North Atlantic salinity maximum (NASM), which is located in the North Atlantic subtropical gyre (see Reverdin et al., 2015;Sutherland, Reverdin, et al., 2014;Sutherland et al., 2016 for further details). Radiative fluxes and wind speed measurements were recorded onboard during the STRASSE campaign. ...

... WSO21 brought some precipitation to the GoM from 11 to 18 February (Figure 12), which may have been responsible for the interior northwestern GoM sea surface salinity reduction shown in Figure 11. The satellite SSS freshening may be linearly correlated to the rain rate [44,45]. The regions near the Mississippi River plume and the coastal regions usually have low salinity waters. ...

... The papers (see, for example, [3][4][5][6] and others) present the results of salinity monitoring by several dozen drifters that were deployed in the Atlantic Ocean in 2007-2014. The authors of these papers give the estimates of the data quality for only a small number of drifters, whose lifetime provided the acquirement of statistically significant amounts of information. ...

... This stratification can affect the air-sea fluxes of heat and moisture, and a better understanding of its formation, evolution, spatiotemporal statistics, and effect on air-sea interaction and satellite remote sensing measurements is needed. The presence of near-surface temperature and salinity gradients (e.g., Reverdin et al., 2013;Anderson and Riser, 2014;Boutin et al., 2018) complicates the comparison between near-surface in situ and skin-layer satellite measurements, which are made at different depths. One way to address this issue is to make simultaneous measurements at multiple depths to characterize the near-surface vertical gradients and hence the in situ-satellite comparisons. ...

... They are particularly frequent in the tropics but can also be strong and frequent in high latitudes during the summer (Bellenger & Duvel, 2009;Kawai & Wada, 2007;Stuart-Menteth et al., 2003). On the other hand, freshening by rain can lead to the formation of stable fresh and often colder lenses (e.g., Katsaros & Buettner, 1969;Moulin et al., 2021;Reverdin et al., 2012) that can correspond to a decrease down to −9 g/kg and −1.5 K . Rain lenses are frequent in the tropics where the precipitation rate is high and the wind speed is low (e.g., Drushka et al., 2016;Moulin et al., 2021) but they can also occur at higher latitudes Ten Doeschate et al., 2019). ...