A new 25 year mesoscale eddy trajectory atlas on AVISO

Antoine Delepoulle (cls, France)


Yannice Faugere (cls, France); Dudley Chelton (OSU, USA)

Event: 2018 Ocean Surface Topography Science Team Meeting

Session: Application development for Operations

Presentation type: Type Poster

A new “Mesoscale Eddy Trajectory Atlas" will be released in second semester 2018 on the Aviso altimetry portal. This dataset was produced and validated by CLS in collaboration with D. Chelton from Oregon State University.
Moreover we will operate a demonstrator, at the end of the year, a software to compute and release near real time eddies dataset with few days delay.

The DT version of the eddy atlas will be produced from 25 years of new daily altimetry maps (DUACS/CMEMS-DT 2018) of SSH based on sampling by two satellites and the NRT atlas we wil be based on DUACS/CMEMS-NRT SSH product. The new dataset will introduce a new design to track eddies, which will allow missing detection on short time and also provide an extended dataset with shorter track than 28 days. In addition to the locations of the detected eddies along their trajectories, the atlas includes additional information about the amplitude, rotational speed, radius, eddy type (cyclonic/anticyclonic) and we will introduce a flag which store missing detection.

This poster will summarize the methodology and the improvements added in this new version of the eddy dataset, and will describe the associated assessment results, including the impacts with respect to previous releases.

Poster show times:

RoomStart DateEnd Date
Foyer, Salao Nobre & tent Thu, Sep 27 2018,18:00 Thu, Sep 27 2018,20:00
Foyer, Salao Nobre & tent Fri, Sep 28 2018,14:00 Fri, Sep 28 2018,15:00
Antoine Delepoulle