s1swotcolocs

Python lib to create co-locations between Sentinel-1 IW or EW images and SWOT KaRin swath.

Free software: MIT license
Documentation: https://s1swotcolocs.readthedocs.io.

Features

Find temporal and spatial co-locations between Sentinel-1 (S1) Level-1/Level-2 products and SWOT Level-3 (L3) SSH data.
Process S1 IW (Interferometric Wide swath) and EW (Extra Wide swath) modes.
Interface with CDSE (Copernicus Data Space Ecosystem) for S1 data discovery.
Generate output defining co-located S1 and SWOT data segments.
Configurable time delta for co-location criteria.
Utility functions for geospatial operations and data handling relevant to S1 and SWOT.

usage

   import s1swotcolocs

alias

creating meta-data colocation files

# to use the lib within a docker image
./coloc_SWOT_L3_with_S1_CDSE_TOPS_sequential_wrapper.py --startdate 20250616 --stopdate 20250616 --confpath src/s1swotcolocs/localconfig.yml

# to use the lib
coloc_SWOT_L3_with_S1_CDSE_TOPS_sequentiel --startmonth 20250616 --stopmonth 20250616 --confpath src/s1swotcolocs/localconfig.yml --outputdir /tmp/

illustration of a co-location between SWOT KaRIn swath and Sentinel-1 IW swath

coloc_swot_iw

illustration of a co-location between SWOT KaRIn reduced swath and Sentinel-1 IW swath

For triple co-location (KaRin ,SWOT-nadir, IW Level-2 WAV) purposes it oculd be important to limit the KarIn swath to the low incidence part of the swath.

coloc_swot_iw

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