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pytroll / satpy

Python package for earth-observing satellite data processing
http://satpy.readthedocs.org/en/latest/
GNU General Public License v3.0
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IICMO and VIICMO cloud mask products - VIIRS #861

Open KonstantinosF opened 5 years ago

KonstantinosF commented 5 years ago

Question I would like to process the IICMO and VIICMO cloud mask products of VIIRS sensor. An example name of such product is illustrated below:

'IICMO_npp_d20161002_t0115291_e0121095_b25547_c20161002164018257730_noaa_ops.h5

My initial question if there is already a reader for these products.

My goal is to create a binary geotiff image projected onto UTM 32N cartographic projection. The values of this image would be either "confidently cloudy" or "confidently clear".

Thanks in advance!!

djhoese commented 5 years ago

I've seen these files mentioned recently and this may be handled by the reader in #824 which hasn't been merged yet. However, I see the files for that PR are only the GRAN products and seem to all be NetCDF files (.nc).

So I guess what I'm saying is, I don't think this is supported yet. Pull requests are welcome and there is documentation for creating your own reader (although I should probably update it with more details).

djhoese commented 5 years ago

I found these files on CLASS here: https://www.avl.class.noaa.gov/saa/products/search?datatype_family=VIIRS_IPNG

However, I don't see any explanation of what "IPNG" means.

djhoese commented 5 years ago

@KonstantinosF I just talked with some folks who know more about VIIRS products than I do and my understanding was that IICMO/VIICMO is a deprecated product as far as NOAA is concerned. The more official product is "ASCI". There is also the CLAVR-x software which produces a cloud mask for VIIRS and many other instruments.

These files being deprecated means there is much less of a possibility that I, as a software developer at the Space Science and Engineering Center at the University of Wisconsin, will get asked by my bosses to add it.

KonstantinosF commented 5 years ago

I found these files on CLASS here: https://www.avl.class.noaa.gov/saa/products/search?datatype_family=VIIRS_IPNG

However, I don't see any explanation of what "IPNG" means.

That's the website to download the IICMO products. For the VICMO use the following: https://www.avl.class.noaa.gov/saa/products/search?sub_id=0&datatype_family=VIIRS_EDR&submit.x=26&submit.y=14

I think "IPNG" stands for "Intermediate Product Non Gridded"