Western boundary circulation and coastal sea-level variability in Northern Hemisphere oceans
read more
Citations
Decadal Variability of the Kuroshio Extension: Observations and an Eddy-Resolving Model Hindcast
River-discharge effects on United States Atlantic and Gulf coast sea-level changes
The evolution of the North Atlantic Meridional Overturning Circulation since 1980
Decadal response of the Kuroshio Extension jet to Rossby waves: Observation and thin-jet theory
AMOC Recent and Future Trends: A Crucial Role for Oceanic Resolution and Greenland Melting?
References
Wind Forcing of the Atlantic Thermocline along 32°N at Low Frequencies
Detecting changes in the transport of the Gulf Stream and the Atlantic overturning circulation from coastal sea level data: The extreme decline in 2009–2010 and estimated variations for 1935–2012
Broadening not strengthening of the Agulhas Current since the early 1990s
A new estimate of the global 3D geostrophic ocean circulation based on satellite data and in-situ measurements
On the recent destabilization of the Gulf Stream path downstream of Cape Hatteras
Related Papers (5)
Variability in Solomon Sea circulation derived from altimeter sea level data
Decadal sea-level variability along the coast of Japan in response to ocean circulation changes
Frequently Asked Questions (11)
Q2. What are the future works in "Western boundary circulation and coastal sea-level variability in northern hemisphere oceans" ?
Hence, further work is required on the matter. The authors showed that dissimilarities between Japanese and American inshore sea level emerge in the second mode of variability. Because the tide gauge networks in both oceans extend further back in time than the period analysed in this study, inshore sea level has potential for reconstruction of the variability of the ocean circulation mode of variability. Although the causal630 link between the upstream sea level and the meridional shifts of WBC extensions is not yet completely understood, their results suggest that upstream inshore tide gauges, such as Key West ( available from 1913 in the PSMSL revised local reference ( RLR ) database ), Fernandina Beach ( 1897 ) or Hosojima ( 1930 ) could be used as proxies for the extension meridional shifts and, by extension, the forcing responsible for such meridional shifts.
Q3. What is the potential for reconstruction of the ocean circulation mode of variability?
Because the tide gauge networks in both oceans extend further back in time than the period analysed in this study, inshoresea level has potential for reconstruction of the variability of the ocean circulation mode of variability.
Q4. What is the effect of the surge correction on the EOF analysis?
the surge correction reduces the variance north of Cape Hatteras, which better constrains the EOF analysis and reduces undesired compensation between modes.
Q5. What is the effect of wind stress on sea level?
Both across-shore and alongshore wind stresses can impact sea level as can variations in the local air pressure through theInverse Barometer (IB) effect.
Q6. What is the role of the western boundary current in the redistribution of heat and salt?
The role of WBCs in the redistribution of heat and salt in the Atlantic is an integral part of the Atlantic Meridional Overturning Circulation (AMOC), resulting in heat transported towards the equator in the South Atlantic and the largest heat transport of any ocean northwards in the North Atlantic (Bryden and Imawaki, 2001).
Q7. What is the significance of the correlation between A and B?
The randomly generated signals are then correlated against B. Significance for zero-lag correlation between A and B is given as the percentage of randomly generated correlations which are less than the correlation between A and B (using absolute values).
Q8. How was the inverse distance weighting technique used?
For each year up to 2019, the available sparse subsurface temperature observations were interpolated at the climatological position of the Gulf Stream and KuroshioExtensions using an inverse distance weighting technique with power parameter p= 2 and a search radius of 400 km, allowing235construction of an along-jet temperature matrix.
Q9. What is the main effect of the local forcing of the atmosphere on sea level?
In addition, the local forcing of the atmosphere drives an important part of the coastal sea-level variability, particularly in shelf environments.
Q10. What are the indices used to determine the variability of the two WBC extensions?
The authors make use of the GSNW index from Joyce et al. (2000) and of the Kuroshio Extension indices from Qiu et al. (2016), and also derive in Sect. 2.3 indices for the variability of the two WBC extensions.
Q11. What is the mechanism proposed by Sasaki et al.?
In the615absence of such information, the mechanism proposed by Sasaki et al. (2014) is, so far, the only linking the upstream sea-level and the WBC extensions’ meridional shifts.