SSEC forums

Thanks for reaching out. Of course we want any provided configurations to be accurate. I assume you modified some calculations from the work we did in your AHI post here (https://forums.ssec.wisc.edu/viewtopic.php?t=59552)? Otherwise, I don't see any ABI 500m grids in the Polar2Grid/Geo2Grid "g...

Regarding that level 1b command: The data saved as 16-bit unsigned integers in that are the scaled version of the square root of the reflectance percentages. You would need to provide a custom enhancement (requires modifying YAML files) to scale the data without square root and in a way that the dat...

When you specify `--no-enhance` and don't force `--dtype` the geotiff writer will try to preserve the data type of the data being saved. So for these visible bands that is 32-bit floats. For the unexpected 16-bit values, the geotiff writer is scaling the input floating point data (the visible reflec...

Hi Conrad,

I see two attachments, but both seem to be valid geotiffs. Both of them also seem to have UInt16 data types. Looking at the vis01 image in python, I see it is indeed all 65535 for the swath portion of the image (0 otherwise). I'm hoping the log can tell me a bit more.

Dave

Hi Conrad,

Just to be sure, what version of Polar2Grid are you running?

Could you send along the log file that P2G produced from this uint16 execution? If possible, a copy of the file it produced may also speed up my debugging. Thanks.

Dave

Hi Bob,

The developer I was referring to was Joleen Feltz and from my understanding you've been in contact. Joleen mentioned that she recommended using GDAL's tools for handling the file you have as there isn't a reader that can load them in Satpy.

Dave

Hi Bob,

The `make_donor_proj.py` script is not part of Geo2Grid. Is that part of CLAVR-x? You may need to contact the CLAVR-x team about the version you are using and compatibility with the files you have.

Dave

Hi, On that documentation page it points out the expected filename format. For example: OR_ABI-L2-{PROD}F-M3_G16_s20182531700311_e20182531711090_c20182531711149.nc Your CLAVR-x file does not match that format and also the `abi_l2_nc` reader does not read CLAVR-x files, only a subset of NOAA official...

The last two are the coordinate of the center of the upper-left pixel. For most satellites the *outer* edges of the pixels are always the same between resolutions, but this means that the center point changes depending on the resolution. So a 2km grid would be 1000 meters from the outer edges (a.k.a...

Sorry, I realized I got the numbers wrong. This should be more accurate: h8_fldk_500m, proj4, +proj=geos +lon_0=140.7 +h=35785863 +a=6378137 +rf=298.257024882273 +units=m +no_defs, 22000, 22000, 500, -500, -5499749.901174725, 5499749.901174725 For my own reference: my last comment I moved the pixels...