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xcube-dev / xcube

xcube is a Python package for generating and exploiting data cubes powered by xarray, dask, and zarr.
https://xcube.readthedocs.io/
MIT License
179 stars 19 forks source link

xcube <> GoogleEarthEngine interface #1023

Open mkoenig3 opened 1 week ago

mkoenig3 commented 1 week ago

Hi folks,

we talked about this a while ago and Gunnar recommended to open a feature request so we don't forget about it.

I occasionally work with GoogleEarthEngine and found that Google's CloudScore+ product for Sentinel-2 works really well (https://developers.google.com/earth-engine/datasets/catalog/GOOGLE_CLOUD_SCORE_PLUS_V1_S2_HARMONIZED). I think it would be great to have access to this data outside of GEE, too.

I found the xee Python package which is an interface for xarray and GEE (https://github.com/google/Xee) but it appears to be rather slow and I wonder if there are plans to provide an xcube interface to GEE.

Cheers, Marcel

forman commented 3 days ago

but it appears to be rather slow and I wonder if there are plans to provide an xcube interface to GEE.

Hi Marcel, how have you tested xee? Since it uses a Google Cloud API I guess the most appropriate way is to test it in an environment that is "close" to the data archives accessible through GEE.

If performance is the driver for your request, it may turn out that an xcube implementation may not be faster if executed in a non-Google infrastructure such as AWS or CDSE.

forman commented 3 days ago

FYI @gunbra32

mkoenig3 commented 3 days ago

Hi Norman, I ran it on DeepESDL but I can give it another try on colab for comparison. I was just surprised that it appears to be much slower compared to accessing data from Sentinel-Hub through xcube.