Download the data

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

A notebook to illustrate how to download and read the global data is available

If you are only interested in regional data, a notebook is available to read online the global data and download only regional data

The dataset is presented with the following directory structure:

---

Data description

1) Data for experiment

Nadir alongtrack data (L3 products) for SSH map reconstruction

.
|-- nadirs
|   |-- c2n		% NRT Cryosat-2 new orbit Global Ocean Along track SSALTO/DUACS Sea Surface Height L3 product
|   |   |-- 2023
|   |   |   |-- nrt_global_c2n_phy_l3_1hz_2023*.nc
|   |   |-- 2024
|   |   |   |-- nrt_global_c2n_phy_l3_1hz_2024*.nc
|   |-- h2b		% NRT Haiyang-2B Global Ocean Along track SSALTO/DUACS Sea Surface Height L3 product
|   |   |-- 2023
|   |   |   |-- nrt_global_h2b_phy_l3_1hz_2023*.nc
|   |   |-- 2024
|   |   |   |-- nrt_global_h2b_phy_l3_1hz_2024*.nc
|   |-- j3n		% NRT Jason-3 Interleaved Global Ocean Along track SSALTO/DUACS Sea Surface Height L3 product
|   |   |-- 2023
|   |   |   |-- nrt_global_j3n_phy_l3_1hz_2023*.nc
|   |   |-- 2024
|   |   |   |-- nrt_global_j3n_phy_l3_1hz_2024*.nc
|   |-- s3a		% NRT Sentinel-3A Global Ocean Along track SSALTO/DUACS Sea Surface Height L3 product
|   |   |-- 2023
|   |   |   |-- nrt_global_s3a_phy_l3_1hz_2023*.nc
|   |   |-- 2024
|   |   |   |-- nrt_global_s3a_phy_l3_1hz_2024*.nc
|   |-- s3b		% NRT Sentinel-3B Global Ocean Along track SSALTO/DUACS Sea Surface Height L3 product
|   |   |-- 2023
|   |   |   |-- nrt_global_s3b_phy_l3_1hz_2023*.nc
|   |   |-- 2024
|   |   |   |-- nrt_global_s3b_phy_l3_1hz_2024*.nc
|   |-- s6a_hr		% NRT Sentinel-6A (SAR mode) Global Ocean Along track SSALTO/DUACS Sea Surface Height L3 product
|   |   |-- 2023
|   |   |   |-- nrt_global_s6a_hr_phy_l3_1hz_2023*.nc
|   |   |-- 2024
|   |   |   |-- nrt_global_s6a_hr_phy_l3_1hz_2024*.nc
|   |-- swon		%  NRT SWOT nadir 28days Global Ocean Along track SSALTO/DUACS Sea Surface Height L3 product
|   |   |-- 2023
|   |   |   |-- nrt_global_swo_hr_phy_l3_1hz_2023*.nc
|   |   |-- 2024
|   |   |   |-- nrt_global_swo_hr_phy_l3_1hz_2024*.nc

SWOT Karin data (L3 products) for SSH map reconstruction

.
|-- karin

---

2) Data for evaluation

Independant nadir alongtrack data (L3 products) for SSH evaluation

.
|-- indep_nadir
|   |-- al		% NRT Altika Drifting Phase Global Ocean Along track SSALTO/DUACS Sea Surface Height L3 product
|   |   |-- 2023
|   |   |   |-- nrt_global_al_phy_l3_1hz_2023*.nc
|   |   |-- 2024
|   |   |   |-- nrt_global_al_phy_l3_1hz_2024*.nc

Independant drifter data (L3 products) for geostrophic current evaluation

.
|-- indep_drifters 

Auxiliary data for diagnostics

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

---

3) Data for comparison

Reconstruction maps for comparison

.
|-- maps
|   |-- mapping_miost_s3a_s3b_s6a-hr			% MIOST reconstruction 3 nadirs			
|   |-- mapping_miost_s3a_s3b_s6a-hr_swot		% MIOST reconstruction 3 nadirs + 1 SWOT
|   |-- mapping_miost_c2n_h2b_j3n_s3a_s3b_s6a-hr	% MIOST reconstruction 6 nadirs
|   |-- mapping_miost_c2n_h2b_j3n_s3a_s3b_s6a-hr	% MIOST reconstruction 6 nadirs + 1 SWOT

---

Downloading the data

The data can be downloaded locally directly from your browser by clicking here: Download

or by using the wget command, for example, to download and unzip the experiment nadir data:

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

Either way, we recommand that the data be then stored in the data/ repository.