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20030519: GOES-12 scanning schedule

>From: Jerrold Robaidek <address@hidden>
>Organization: SSEC
>Keywords:  200305162214.h4GMEkLd023872 Unidata-Wisconsin MeteoForum

Hi Jerry,

re: GOES-12 scanning schedules

>This may help:
>
>http://www.ssec.wisc.edu/datacenter/rtpacific.html
>
>or
>
>http://www.ssd.noaa.gov/PS/SATS/GOES/NINE/sched.html

Thanks.  These are for GOES-9, but the second one got me to the
appropriate web site for GOES-East scanning schedules.

The thing that bothered me was the GOES-12 data (EAST/NH, EAST/SH) is
only as frequent as every half hour.  I was under the impression that
the scanning was supposed to be done every 15 minutes, but this must
be for CONUS.

re: compositing NH/NHE with SH

>We do not do the NH, NHE, and SH as you describe.  We are creating
>global composites, but just for channels 3 and 4  (we use MODIS WV data
>at the poles.)  and at 10 km resolution, not 4km.

That is how I remembered things.

>Fred Mosher is doing something similar to what your are describing, but
>I do not know what channels he is doing it for.

I am now doing it for all imager bands.  I will be moving the code over
to unidata2 after all of the bugs have been squashed.

>We do some merging of GOES-East and GOES-West for the web in all
>channels, but you are right we remap those into mercator.

Right.

>How do your visible composites look?  I've never been happy with the
>visible composites .... the terminator is very time sensitive.

The two or three I did yesterday looked great.  Two that I have done
today look _bad_.  The main reason they look bad is the SH scan data
seems to be shifted west and southward in comparison to the NHE data
near the interface of the two.  I have looked at this pretty carefully
using both images from unidata2 and from SATEPS, and I am convinced
that the data is shifted a considerable distance.

>Also, you mentioned that you want to use your old SDI to ingest, and
>feed a similar system out at Unidata correct?

Yes, we are still planning on doing this.

>If you do this, I think you should do it differently from the way we
>are doing it.  You should write the data directly to the machine that
>will serve it, not do the relay like we are doing.

I assume you mean using NFS?  I take it to mean that you would do this
so that the data on the non-SDI box is current (no need to comment
if this assumption is correct).  I think that this is a great idea.

>We can chat about this sometime.

Sounds good.  Tomorrow or Wednesday, I will put up some GIFs (tm) of
composites as examples of the compositing and let you know where to
look.

Thanks for the input...

Tom
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