Download the data

The data are hosted and can be accessed on the MEOM server opendap here.

Data information

The dataset is presented with the following directory structure:

1) Data for experiment: obs/

Nadir alongtrack data (L3 products) for SSH map reconstruction

.
|-- obs
|   |-- alg 
|   |   |-- dt_europe_alg_phy_l3_2017* 
|   |-- c2 
|   |   |-- dt_europe_c2_phy_l3_2017* 
|   |-- j2g 
|   |   |-- dt_europe_j2g_phy_l3_2017* 
|   |-- j2n 
|   |   |-- dt_europe_j2n_phy_l3_2017* 
|   |-- j3 
|   |   |-- dt_europe_j3_phy_l3_2017* 
|   |-- s3a
|   |   |-- dt_europe_s3a_phy_l3_2017* 

2) Data for evaluation: eval/

Independant nadir alongtrack data (L3 products) for SSH evaluation

.
|-- eval
|   |-- indep_nadirs
|   |   |-- h2ag
|   |   |   |-- dt_europe_h2ag_phy_l3_2017*		% Haiyang-2A (H2A) Drifting Phase Europe Ocean Along track SSALTO/DUACS Sea Surface Height L3 product 

Independant drifters for currents evaluation

.
|-- eval
|   |-- indep_drifters 
|   |   |-- uv_drifters_2017*       % CMEMS - Global Ocean- Delayed Mode in-situ observations of ocean surface currents

Auxiliary data for diagnostics

.
|-- eval
|   |-- sad
|   |-- distance_to_nearest_coastline_60.nc
|   |-- land_water_mask_60.nc
|   |-- variance_cmems_dt_allsat.nc

3) Data for comparison: maps/

Reconstruction maps for comparison

.
|-- maps
|   |-- DUACS			% DUACS reconstruction with all sat (including evaluation)			
|   |-- MIOST		% MIOST reconstruction 

Download and read the data

The data can be downloaded locally using the wget command. We recommand that the data be stored in the data/ repository. For example, to download and unzip the experiment obs/ data:

cd data/ 
wget https://ige-meom-opendap.univ-grenoble-alpes.fr/thredds/fileServer/meomopendap/extract/MEOM/OCEAN_DATA_CHALLENGES/2024c_DC_4DMedSea-ESA/obs.tar.gz 
tar -xvf obs.tar.gz  
rm -f obs.tar.gz

Example notebook

A notebook to illustrate how to download and read the global data is available: download_and_open_data.ipynb