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[python #RHP-234890]: Questions About GOES Imagery

Hi Brendan,

That file size is definitely wrong, those products should be more like ~14 
megabytes--I'm guessing it's downloading a 404 html page, which of course fails 
to open as a netcdf file.

I see now that particular product has aged out of the directory. Can you try 
this one?

https://thredds.ucar.edu/thredds/fileServer/satellite/goes/east/products/CloudAndMoistureImagery/CONUS/Channel03/20230331/OR_ABI-L2-CMIPC-M6C03_G16_s20230901756160_e20230901756160_c20230901756160.nc

Cheers, 

Ryan

> Hi Ryan,
> 
> thanks for the message. I tried what you suggested, with the same result. 
> Maybe it is a bug with xarray?, then?
> 
> I wasn't able to access the URL directly through my browser (Safari or 
> Chrome; I get a 404 error) however (I think) I was able to download it 
> successfully with curl?:
> 
> curl -o 
> OR_ABI-L2-CMIPC-M6C03_G16_s20230852046160_e20230852046160_c20230852046160.nc 
> https://thredds.ucar.edu/thredds/fileServer/satellite/goes/east/products/CloudAndMoistureImagery/CONUS/Channel03/current/OR_ABI-L2-CMIPC-M6C03_G16_s20230852046160_e20230852046160_c20230852046160.nc
> 
> Which produces a file of 924 bytes, the same size as the image I downloaded 
> previously through the siphon? interface.
> 
> But opening with xarray? still gives an error. If I don't specify 
> engine='netcfd4'? then I get this error:
> 
> ValueError: did not find a match in any of xarray's currently installed IO 
> backends ['netcdf4', 'scipy', 'gini']. Consider explicitly selecting one of 
> the installed engines via the ``engine`` parameter, or installing additional 
> IO dependencies
> 
> but when passing the engine? argument I get
> 
> OSError: [Errno -51] NetCDF: Unknown file format: 
> '/Users/brendan/Desktop/OR_ABI-L2-CMIPC-M6C03_G16_s20230852046160_e20230852046160_c20230852046160.nc'
> 
> I will continue to investigate, but if you have any ideas I'd love to hear 
> them.
> 


Ticket Details
===================
Ticket ID: RHP-234890
Department: Support Python
Priority: Low
Status: Closed
===================
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