Pete,
Yes, I've noticed that too. I haven't peered into the data to check, but
because I require all tiles to be present before processing, I'm assuming
the tiles are coming in but with swaths of "missing" values (reference the
Sectorized_CMI:_FillValue variable).
Prior to now I've colored missing values white most of the time to hide the
black pixel problem. Now I'm making missing values black, so if you notice
that change on COD's site, that's why.
-Mike
======================
Mike Zuranski
Meteorology Support Analyst
College of DuPage - Nexlab
Weather.cod.edu
======================
On Tue, Oct 31, 2017 at 3:34 PM, Pete Pokrandt <poker@xxxxxxxxxxxx> wrote:
> Nice! I also notice lots of sporadic missing tiles, or tiles that don't
> have data in them, for example
>
>
> http://whirlwind.aos.wisc.edu/~wxp/goes16/vis_sqrt/conus/
> 201710311747_conus.jpg
>
>
> COD's images have the same missing tiles, so it's not just my processing.
>
>
> Pete
>
>
>
>
>
>
> <http://www.weather.com/tv/shows/wx-geeks/video/the-incredible-shrinking-cold-pool>
> --
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086 <(608)%20262-3086> - poker@xxxxxxxxxxxx
>
>
> ------------------------------
> *From:* ldm-users-bounces@xxxxxxxxxxxxxxxx <ldm-users-bounces@unidata.
> ucar.edu> on behalf of Mike Zuranski <zuranski@xxxxxxxxxxxxxxx>
> *Sent:* Tuesday, October 31, 2017 2:48 PM
> *To:* LDM; NOAAPORT
> *Subject:* [ldm-users] GOES-16 visible bands may be finally fixed
>
> I hope I'm not jumping the gun too much here, but it appears the black
> pixel problem has finally been resolved! Watching a loop of visible
> imagery just now, I noticed a slight change taking place at 17Z today,
> including a tweak to the scale and no more black pixels. Upon further
> inspection, the netCDF variable Sectorized_CMI:scale_factor changed
> from 0.0002442 to 0.00031746 at that time.
>
> I'm noticing this change for bands 1, 2 and 3. This also makes the
> new valid range for the visible bands 0.0 to 1.3.
>
> Hooray!!
>
> -Mike
>
> ======================
> Mike Zuranski
> Meteorology Support Analyst
> College of DuPage - Nexlab
> Weather.cod.edu
> ======================
>
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