How can I see the available dates for a dataset?
The available dates are shown beneath the dataset dropdown once you select a dataset.
Can I request the addition of more products?
Yes. Please email firstname.lastname@example.org with any suggestions.
Will you add more features?
Yes. We regularly extend the functionality of cs2eo.
Can I request additional features or enhancements?
Yes, we'd love to get your input. Please email email@example.com with any suggestions.
Do I need any packages to run the Python download scripts?
No. They should work within a default Python 3 environment.
How do I use the KML files?
You can use a KML file to save the visualisation component of your results and view it at a later time. We recommend loading the file into Google Earth.
What are Combined Products?
Combined Products contain the data from two or more 3rd party products, integrated together into the same NetCDF files for convenience. The format within the NetCDF files is unchanged from the original 3rd party products. For example, when investigating an intersection of ICESat-2 and CryoSat-2 data, the user can obtain download scripts for each dataset individually, or in some cases a single Combined Product that contains the intersecting data from both missions. Currently, Combined Products are only available for CryoSat-2 and ICESat-2 (i.e. the Cryo2Ice campaign).
Combined Products are available in two forms:
- Standard Combined Products: These are pre-generated Combined Products covering areas of common interest. They are available for immediate download.
- Custom Combined Products: These are generated in response to user queries, provided those queries return less than 200 intersection segments. They take some time to produce, so the user is requested to provide an email address. A download link will be sent to the user via email when the Custom Combined Product is available.
What data does the CSV file contain?
The CSV file contains one row for each contiguous intersecting data segment returned by your query. This includes segment start and end times, lat/long coordinates, sensor ground track details and names of the third party product files containing each result. Finally, there is a segment ID value, which is also displayed in our visualisation component. This will help you refer between the two if needed.
What does the resolution dropdown mean?
We register all sensor data to a coarse geospatial grid in order to rapidly calculate intersections without requiring any knowledge of sensor fields of view. This process is completed upon data ingest, for specific grid cell dimensions, before the user submits a query. 10km and 5km are the available grid cell dimensions.
Selecting 10km means that if data from sensor A and data from sensor B fall within the same 10 km grid square within the specified max separation time, those data are considered to be intersecting. 10km is sufficient given the footprints and resolutions associated with satellite altimetry (the original use case for cs2eo). Selecting 5km will be slower but is likely to work better for datasets gathered from airborne rather than satellite platforms.
What coordinate system does the underlying grid use?
The EASE grid (2.0): https://nsidc.org/data/ease.