scholarly journals Detecting the surface salinity signature of Gulf Stream cold-core rings in Aquarius synergistic products

2015 ◽  
Vol 120 (2) ◽  
pp. 859-874 ◽  
Author(s):  
M. Umbert ◽  
S. Guimbard ◽  
G. Lagerloef ◽  
L. Thompson ◽  
M. Portabella ◽  
...  
Keyword(s):  
Gulf Stream ◽  
Surface Salinity ◽  
Cold Core

Gulf stream cold core rings: large-scale interaction sites for open ocean plankton communities

1976 ◽  
Vol 23 (8) ◽  
pp. 695-710 ◽  
Author(s):  
Peter H. Wiebe ◽  
Edward M. Hulburt ◽  
Edward J. Carpenter ◽  
Andrew E. Jahn ◽  
George P. Knapp ◽  
...  
Keyword(s):  
Gulf Stream ◽  
Large Scale ◽  
Open Ocean ◽  
Scale Interaction ◽  
Interaction Sites ◽  
Cold Core ◽  
Plankton Communities

scholarly journals The Response of the Northwest Atlantic Ocean to Climate Change

2020 ◽  
Vol 33 (2) ◽  
pp. 405-428 ◽  
Author(s):  
Michael A. Alexander ◽  
Sang-ik Shin ◽  
James D. Scott ◽  
Enrique Curchitser ◽  
Charles Stock
Keyword(s):  
Climate Change ◽  
High Resolution ◽  
Atlantic Ocean ◽  
Gulf Stream ◽  
Large Scale ◽  
Climate Models ◽  
Gulf Of Maine ◽  
Global Climate Models ◽  
The Other ◽  
Surface Salinity

AbstractROMS, a high-resolution regional ocean model, was used to study how climate change may affect the northwestern Atlantic Ocean. A control (CTRL) simulation was conducted for the recent past (1976–2005), and simulations with additional forcing at the surface and lateral boundaries, obtained from three different global climate models (GCMs) using the RCP8.5 scenario, were conducted to represent the future (2070–99). The climate change response was obtained from the difference between the CTRL and each of the three future simulations. All three ROMS simulations indicated large increases in sea surface temperatures (SSTs) over most of the domain except off the eastern U.S. seaboard resulting from weakening of the Gulf Stream. There are also substantial intermodel differences in the response, including a southward shift of the Gulf Stream in one simulation and a slight northward shift in the other two, with corresponding changes in eddy activity. The depth of maximum warming varied among the three simulations, resulting in differences in the bottom temperature response in coastal regions, including the Gulf of Maine and the West Florida Shelf. The surface salinity decreased in the northern part of the domain and increased in the south in all three experiments, although the freshening extended much farther south in one ROMS simulation relative to the other two, and also relative to the GCM that provided the large-scale forcing. Thus, while high resolution allows for a better representation of currents and bathymetry, the response to climate change can vary considerably depending on the large-scale forcing.

scholarly journals Comparison of Satellite-Derived Sea Surface Temperature and Sea Surface Salinity Gradients Using the Saildrone California/Baja and North Atlantic Gulf Stream Deployments

2020 ◽  
Vol 12 (11) ◽  
pp. 1839 ◽  
Author(s):  
Jorge Vazquez-Cuervo ◽  
Jose Gomez-Valdes ◽  
Marouan Bouali
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
North Atlantic ◽  
Gulf Stream ◽  
Sea Surface ◽  
Sea Surface Salinity ◽  
Surface Salinity ◽  
Temporal Sampling ◽  
The North

Validation of satellite-based retrieval of ocean parameters like Sea Surface Temperature (SST) and Sea Surface Salinity (SSS) is commonly done via statistical comparison with in situ measurements. Because in situ observations derived from coastal/tropical moored buoys and Argo floats are only representatives of one specific geographical point, they cannot be used to measure spatial gradients of ocean parameters (i.e., two-dimensional vectors). In this study, we exploit the high temporal sampling of the unmanned surface vehicle (USV) Saildrone (i.e., one measurement per minute) and describe a methodology to compare the magnitude of SST and SSS gradients derived from satellite-based products with those captured by Saildrone. Using two Saildrone campaigns conducted in the California/Baja region in 2018 and in the North Atlantic Gulf Stream in 2019, we compare the magnitude of gradients derived from six different GHRSST Level 4 SST (MUR, OSTIA, CMC, K10, REMSS, and DMI) and two SSS (JPLSMAP, RSS40km) datasets. While results indicate strong consistency between Saildrone- and satellite-based observations of SST and SSS, this is not the case for derived gradients with correlations lower than 0.4 for SST and 0.1 for SSS products.

scholarly journals Sea surface salinity structure of the meandering Gulf Stream revealed by SMOS sensor

2014 ◽  
Vol 41 (9) ◽  
pp. 3141-3148 ◽  
Author(s):  
N. Reul ◽  
B. Chapron ◽  
T. Lee ◽  
C. Donlon ◽  
J. Boutin ◽  
...  
Keyword(s):  
Gulf Stream ◽  
Sea Surface ◽  
Sea Surface Salinity ◽  
Surface Salinity ◽  
Salinity Structure

Euphausiid invasion/dispersal in gulf stream cold-core rings

1983 ◽  
Vol 34 (4) ◽  
pp. 625 ◽  
Author(s):  
PH Wiebe ◽  
GR Flierl
Keyword(s):  
Gulf Stream ◽  
Cold Water ◽  
Warm Water ◽  
Dispersal Patterns ◽  
Near Surface ◽  
Warm Water Species ◽  
Living Species ◽  
Varied Response ◽  
Cold Core ◽  
Water Species

Invasion/dispersal patterns in the distribution and abundance of euphausiid species in four 2-8-month- old cold-core rings from the Gulf Stream suggest that several different physical exchange mechanisms are operating. The most important of these appear to be horizontal mixing in the mixed layer and exchange due to movement into or out of the trapped region at depth. A zone of minimum exchange is evident between 150 and 400 m. Changes in vertical distribution and abundance of warm-water species invading the ring environs suggest that only a few species, such as Stylocheiron carinatum, are able to penetrate and take advantage of the changing ring conditions in young- to middle-aged rings (2-8 months). Other near-surface warm-water species penetrate at slower rates regardless of whether they are vertical migrators (Euphausia brevis, E. hemigibba, E. tenera, Thysanopoda aequalis) or non-migrators (S. suhmii, S. abbreviatum). Deeper-living species such as S. afine, S. elongatum, Nematoscelis microps, and N. tenella, show minimal penetration of core waters in these four rings. Cold-water species expatriated in cold-core rings also show a varied response to ring decay, with some species disappearing rapidly-3-4 months (Thysanopoda longicaudata)-and others persisting for substantial periods-0.5-1 year (N. megalops, E. krohnii). Distribution of the latter two species indicates dispersal out beyond the ring core at the surface in the case of E. krohnii and at depths of 400-1 000 m in the case of N. megalops.

Observed Formation of a Gulf Stream Cold Core Ring

1977 ◽  
Vol 7 (6) ◽  
pp. 944-946 ◽  
Author(s):  
Randy A. Doblar ◽  
Robert E. Cheney
Keyword(s):  
Gulf Stream ◽  
Cold Core
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