The SPASSO project

The temporal and spatial variability of the horizontal mesoscale and submesoscale circulation strongly affect the marine environment fiels and the biogeochemical budgets which represent a real challenge during in situ measurements. Indeed, samplings which are only few tens of kms or few weeks apart may be representative of very different situations.
The software package SPASSO has been developed to overcome this problem. SPASSO diagnostics are based on NRT acquisition of satellite altimetry and ocean color and model predictions.

SPASSO provides maps of dynamical and biogeochemical structures such as fronts, eddies and filaments, in addition to chlorophyll and SST, which are automatically generated. SPASSO could be used in Delayed Time (DT) for providing produts in a region of interests or else for performing a systematic multi-field DT analysis of a region at various scales. SPASSO is using to guide the in-situ sampling strategy as well as the interpretetion of collected observations. This adaptive strategy based on these diagnostics has been applied during several ocean campaigns since 2010.

See SPASSO User Guide [ PDF]

The SPASSO package is freely distributed with the hope that it is useful for the oceanographic community. SPASSO is particularly beneficial for implementing adaptive sampling strategies during oceanographic campaigns.
The SWOT Adaptive Cruise is supported by Science Officer Louise Rousselet and Data Officer Lloyd Izard, who are available to assist with setting up SPASSO and computing Eulerian and Lagrangian diagnostics for upcoming cruises. For more information, please contact Lloyd Izard and Louise Rousselet (; and visit the SWOT-AdAC website at

If you have benefited from SPASSO, please cite the following reference:

A Software Package for an Adaptive Satellite-based Sampling for Oceanographic cruises (SPASSOv2.0): tracking fine-scale features for physical and biogeochemical studies (in prep). Rousselet, L., d’Ovidio, F., Doglioli, A., Izard, L., Nencioli, F., Petrenko, A., Barrillon, S., Della-Penna, A.

Download SPASSO package [Here]

Available Now !


All people who contributed to SPASSO development are warmly thanked: L. Rousselet, F. d’Ovidio, F. Nencioli, A. Della Penna, L. Izard, S. Barrillon, G. Fifani, A. Doglioli and A. Petrenko.

SPASSO development was supported by

– European Commission FPA_Copernicus_SGA4_Tier 1 – Work Programme 2018-1-87 (FPACUP_SGA4_Tier1; Specific Grant Agreement No. 6
Implementing the FPA 275/G/GRO/COPE/17/10042)

– CNES, focused on SWOT mission (project BIOSWOT-AdAC,;

– -LEFE/IDAO, LEFE/CYBER and Region PACA (LATEX, 2007-2011,

SPASSO is operated with the support of the SIP (Service Informatique de Pythéas) and in particular C. Yohia, J. Lecubin. D. Zevaco and C. Blanpain (Institut Pythéas, Marseille, France).