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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Devin, I've noticed this since we first started getting the imagery back in April. The problem is that the ABI instrument returns reflectance values that are greater than 1 (up to 1.25 or so) but the processing software that remaps the images and sends out over NOAAPort is currently clipping them at 1 and assigning any higher values a missing/out of range value (which unfortunately is zero) My quick and dirty solution is replacing all 0 values in the image with 1's, since I'd rather see white in the middle of storms, at the expense of the dark (night) areas being white. The only time it really ended up being an issue was with the total eclipse, which progressed across the country in brilliant white on my images. Supposedly this was going to be fixed in July, but so far it has not. Someday hopefully. 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 - poker@xxxxxxxxxxxx ________________________________ From: ldm-users-bounces@xxxxxxxxxxxxxxxx <ldm-users-bounces@xxxxxxxxxxxxxxxx> on behalf of Devin Eyre <Devin.Eyre@xxxxxxxxxxxx> Sent: Monday, October 2, 2017 9:56 AM To: ldm-users@xxxxxxxxxxxxxxxx Subject: [ldm-users] no-data values in GOES-16 in visible imagery I have seen that there are frequently no-data values in the middle of high-reflectivity areas in the visible imagery. How are you dealing with this when creating graphics?
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