geostationary satellite data

[Robin Koch]

Am 16.12.2015 um 18:30 schrieb Peter Pearson:
> On Thu, 17 Dec 2015 04:08:02 +1100, Chris Angelico <rosuav at gmail.com> wrote:
 >>
>> It could be 16 bits per pixel. Without knowing a lot more about the
>> source of the image and its format, it's hard to say with any
>> certainty.
>
> Agreed.  It's annoying when an agency goes to the trouble of making
> huge datasets available online, but fails to identify the format.

http://www.cpc.ncep.noaa.gov/products/global_precip/html/README

says (among other things):

| Each record is a 9896 x 3298 Fortran array of IR brightness
| temperatures that have been scaled to fit into 1-byte by subtracting
| "75" from each datum. Therefore it is necessary for the user to add a
| value of "75" to each data value when using the data.

HTH a little,

-- 
Robin Koch