Surface Salinity in the North Atlantic Subtropical Gyre During the STRASSE/SPURS Summer 2012 Cruise

Reverdin, Gilles; Salvador, Joaquín; Font, Jordi; Lumpkin, Rick

doi:10.5670/oceanog.2015.09

Cited by 18 publications

(12 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Yet, the highest MLD values observed in January are of 78 ± 26 m (Figure b; Table S1) while the deepest MLD of 129 m has been recorded in February. MLD values and seasonality as reported by the four BGC‐Argo floats are consistent with previous observations in NASTG (de Boyer Montégut et al, ; Reverdin et al, ). This implies that the mixed layer in NASTG is not thick enough to allow CDOM upwelling from deep reservoirs.…”

Section: Resultssupporting

confidence: 91%

Small Phytoplankton Shapes Colored Dissolved Organic Matter Dynamics in the North Atlantic Subtropical Gyre

Organelli

Claustre

2019

Geophysical Research Letters

View full text Add to dashboard Cite

The North Atlantic subtropical gyre (NASTG) is a model of the future ocean under climate change. Ocean warming signals are hidden within the blue color of these clear waters and can be tracked by understanding the dynamics among phytoplankton chlorophyll ([Chl]) and colored dissolved organic matter (CDOM). In NASTG, [Chl] and CDOM are strongly correlated. Yet, this unusual correlation for open oceans remains unexplained. Here, we test main hypotheses by analyzing high spatiotemporal resolution data collected by Biogeochemical‐Argo floats between 2012 and 2018. The direct production of CDOM via phytoplankton metabolism is the main occurring mechanism. More importantly, CDOM dynamics strongly depend on the abundance of picophytoplankton. Our findings thus highlight the critical role of these small organisms under the ocean warming scenario. Picophytoplankton will enhance the production of colored dissolved compounds and, ultimately, impact on the ocean carbon cycle.

show abstract

Section: Resultssupporting

confidence: 91%

Small Phytoplankton Shapes Colored Dissolved Organic Matter Dynamics in the North Atlantic Subtropical Gyre

Organelli

Claustre

2019

Geophysical Research Letters

View full text Add to dashboard Cite

show abstract

“…[] observed a cooling reaching 2–3 degrees in a single day due to a winter storm. Furthermore, advection of mixed layer submesoscale fronts (with typical amplitudes of 3–5°C in this region) could induce a rapid change at the surface, with a displacement of typically 2 km in 6 h during a summer survey in the subtropical North Atlantic [ Reverdin et al ., ]. Although the diurnal processes could be a moderate source of aliasing of TSG submesoscale measurements, 100 km subdivisions of the transect are nearly synoptic and crossed by the ships in 3–4 h, thus fast enough with respect to the daily cycle.…”

Section: Methodsmentioning

confidence: 99%

Observation of the surface horizontal thermohaline variability at mesoscale to submesoscale in the north‐eastern subtropical Atlantic Ocean

et al. 2015

Self Cite

View full text Add to dashboard Cite

The seasonal variability of the surface horizontal thermohaline structure is investigated in the north-eastern Atlantic Surface Salinity Maximum (SSM) at length scales from five to hundreds of kilometers, i.e., at submesoscale to mesoscale. The near-surface temperature and salinity data from merchant ship thermosalinograph (TSG) transects across the Atlantic are used to compute the horizontal temperature, salinity and density fluctuations, and the density ratio. During late winter in the north-eastern SSM, thermohaline compensation is observed for wavelengths from 5 km to more than 200 km; in spite of large and sharp surface thermohaline fronts, a weak density surface horizontal gradient is observed. Temperature and salinity exhibit an energetic spectra in k 22 slope scale between 20-100 km scale and a steeper slope at shorter wavelengths, while density spectra exhibit lower energy level with a clear k 23 slope below 20 km, consistent with interior quasigeostrophic turbulence. During summer in the north-eastern SSM, salinity and temperature gradients are no longer compensated due to strong atmospheric heating of the upper ocean. In comparison with winter, the surface density spectrum is enhanced with a flatter slope between k 22 and k 21 between 5 and 20 km.

show abstract

“…One of these experiments was a joint European-American initiative (SPURS) in the region of peak SSS in the North Atlantic, aimed at understanding the processes causing this maximum. Font was the chief scientist on board the R/V Sarmiento de Gamboa who participated in this international exercise in March 2016 (Centurioni et al 2015, Lindstrom 2015, Reverdin et al 2015). …”

Section: Remote Sensing Of the Oceanmentioning

confidence: 99%

The scientific and personal imprint of Jordi Font, a serene oceanographer

Pelegrí¹,

Gabarró²,

Camps³

2016

Sci. Mar.

View full text Add to dashboard Cite

BiographyPhysical oceanographers have been principal actors in Scandinavian research centres since the end of the 19th century, and in other northern European countries and the United States since the 1920s. The study of the physical marine environment developed even further in these countries during the 1960s and 1970s with the advent of continuous recording instruments, the start of numerical models and the appearance of satellite remote sensing. During these years, however, physical oceanography remained largely neglected in Spain, as research on marine sciences was dominated by a long-standing tradition in biological and chemical sciences, consolidated thanks to the importance of fisheries (particularly off NW Africa) and the clear influence of the ecologist Ramon Margalef and the chemists Fernando Fraga and Antoni Ballester. In the early 1970s, Spain had no more than a handful of oceanographers studying the physical environment of the ocean (Pelegrí et al. 2012).

show abstract

Surface Salinity in the North Atlantic Subtropical Gyre During the STRASSE/SPURS Summer 2012 Cruise

Cited by 18 publications

References 18 publications

Small Phytoplankton Shapes Colored Dissolved Organic Matter Dynamics in the North Atlantic Subtropical Gyre

Small Phytoplankton Shapes Colored Dissolved Organic Matter Dynamics in the North Atlantic Subtropical Gyre

Observation of the surface horizontal thermohaline variability at mesoscale to submesoscale in the north‐eastern subtropical Atlantic Ocean

The scientific and personal imprint of Jordi Font, a serene oceanographer

Contact Info

Product

Resources

About