Near real time and ancillary data

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gbourdin
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Near real time and ancillary data

Post by gbourdin »

Hello François,
I am trying to process data from several satellites in near real-time. You said in a previous post that the ancillary data from ERA5 is more reliable when I had issues running polymer using the NASA ancillary data. Polymer is indeed running smoothly on thousands of images using ERA5 ancillary data but this data is not available in near real-time.
As a workaround, I have tried running POLYMER using the NASA ancillary data, which is available in near real-time, but it crashes on ~50% of the image I am trying to process.
Would you have a solution?
Thank you,
Guillaume
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fsteinmetz
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Re: Near real time and ancillary data

Post by fsteinmetz »

Hello Guillaume, and sorry for the late reply.
What crash happens exactly ? Is it because no ancillary data is available ?
Thanks, cheers,
François
gbourdin
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Re: Near real time and ancillary data

Post by gbourdin »

Hello François,
Yes I think this is because there is no ancillary available. Do you know what is the delay for ERA5?
I managed to get it working with NASA ancillary data with a 3 days delay, but there is several images every day that are not processed due to inconsistent ancillary data (which doesn't happen with ERA5 once the ancillary data are released).
Polymer greatly improves the pixel recovery, it's too bad that I can't really use it in near-real-time ...
Best,
Guillaume
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fsteinmetz
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Re: Near real time and ancillary data

Post by fsteinmetz »

Hello Guillaume,
I advise you to check the latest release v4.14, it supports NCEP GFS forecast data (see https://oceancolor.gsfc.nasa.gov/docs/ancillary/).
Cheers,
François
gbourdin
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Re: Near real time and ancillary data

Post by gbourdin »

Great! I will test it, thank you,
Guillaume
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