Eddy properties in the Mozambique Channel: A comparison between observations and two numerical ocean circulation models

Monitoring the mesoscale eddies of the Lofoten Basin: importance, progress, and challenges

“…The performance of the hybrid eddy detection algorithm used in our study (Halo 2012;Halo et al 2014) has been tested successfully in the Lofoten Basin (Raj et al 2015). Eddy detection in the Lofoten Basin using this method has also been validated using Argo floats and surface drifters (Raj et al 2016).…”

Mesoscale Eddies in the Algerian Basin: do they differ as a function of their formation site?

“…In this work we used a hybrid detection method (Halo et al, 2014): a combination of detecting the largest contours in SLA data (geometric criteria ) and computing the W parameter (traditional physical method (Chelton et al, 2007)). …”

“…The association of regions of negative W and regions embedded in SLA closed loops avoids the detection of spurious features due to noise and removes the ambiguities in multi-poles/elongated closed loops (Halo et al, 2014). Furthermore, structures with lifetime shorter than 7 days are not considered in the analysis.…”

“…Some tests have demonstrated that the number of detected eddies does not change appreciably by varying them (Halo et al, 2014).…”

“…This was done through a series of eulerian statistics (performed on a regular grid) computed on the output of the lagrangian tracking method adopted. The automated detection and tracking method used is a hybrid method (combination of the physical and the geometrical approaches) performed by Penven and Echevin (2005) and Halo et al (2014), and it is detailed in the following section. Such method was applied on a long-term time series (22 years) of daily SLA fields, so providing a robust basis for statistical analysis.…”