SST smoothed frontal gradients
An improved automatic detection of mesoscale fronts, derived from Cayula, J. F., & Cornillon, P. (1992) and Cayula, J. F., & Cornillon, P. (1995), using the new method described by Nieto et al. (2012)

Nieto, Karen, Demarcq, H. and McClatchie, S. "Mesoscale frontal structures in the Canary Upwelling System: new front …