[nws-changes] 20090227: satellite update

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Operations Weekly Schedule

Issued on 27/02/09 at 10:15:31

Seq Nr: 2

Planned activities for week 10/2009:
RAPID SCANNING SERVICE: METEOSAT-8
Due to sun co-linearity between 24/02/09 and 05/03/09 repeat cycles 11:15 and 11:30 UTC may be interrupted or not available.

0 DEGREE SERVICE: METEOSAT-9
Due to sun co-linearity between 24/02/09 and 05/03/09 repeat cycles 12:00 and 12:15 UTC may be interrupted or not available.

GROUND SEGMENT
Due to ground segment maintenance on 04/03/09 at 10:00 UTC. Meteosat-8 Meteorological product generation will be interrupted for one hour, followed by a three hour
high risk period.

Due to ground segment maintenance on 04/03/09 at 13:00 UTC. Meteosat-9 Meteorological product generation will be interrupted for one hour, followed by a three hour
high risk period.

EUMETCast
We are pleased to announce the inclusion of new OSI-SAF products on EUMETCast as of 03/03/09. The Ocean and Sea Ice SAF 12.5 km ASCAT wind product is generated every 3 min with average file sizes of 300 kB.

EUMETCast requirements:
On EUMETCast the files will appear on the channel "SAF-Europe" (PID 500, multicast address 224.223.222.28). The filenames start with "ascat" and end with "125_ovw.l2_bufr", e.g. ascat_20090204_222101_metopa_11923_eps_o_125_ovw.l2_bufr

Full details are provided in the ASCAT Wind Product User Manual, see: http://www.osi-saf.org All users already registered for OSI-SAF products will automatically get the new products.

Due to sun interference of the disseminating satellites users might experience lower signal margin or outages on EUMETCast for a short period (less than 15 min) every
day:

on Ku band Europe between 23/02/2009 and 14/03/2009
on C band Africa between 23/02/2009 and 06/04/2009
on C band Americas between 23/02/2009 and 12/04/2009

The exact times and durations of the signal degradation or outages depend on the reception location and the used satellite. Please use following link to determine the time for your location: http://www.satellite-calculations.com/SUNcalc/SUNcalc.htm

- enter as satellite Eurobird 9 (Ku band Europe), or Atlantic Bird 3 (C band Africa), or NSS 806 (C band Americas)
- enter location, band, season and antenna size and press "Calculate"

A common period of signal degradation for all C-Band (Africa and Americas) users is expected at around 11:33 UTC from 28/02/2009 to 08/03/2009.

Due to maintenance, there will be a high risk period on C band Americas on 05/03/09 between 02:00 UTC and 03:00 UTC. The expected downtime should be less than 1 second.

FOREIGN SATELLITE DATA
GOES11_135W eclipse from 09/02/09 to 28/04/09: 09:00 UTC and 10:00 UTC files may not be available. GOES12_75W eclipse from 14/02/09 to 28/04/09: 05:00 UTC and 06:00 UTC files may not be available. MTSAT-1R_140E eclipse from 15/02/09 to 25/04/09: 14:00 UTC and 15:00 UTC files may not be available. FY2C eclipse season from 22/02/09 to 12/04/09: 16:00 and 18:00 UTC files may not be available.

IODC INFORMATION
Due to Meteosat-7 eclipse season from 12/02/09 to 31/03/09, slots 39 to 43 may not be available.

FUTURE EVENTS
The Meteosat-8 Rapid Scanning Service will be interrupted from 09:00 UTC on 10/03/09 until 12:00 UTC on 13/03/09 for the regular monthly rapid scanning interruption and for essential maintenance to the Primary Ground Station antenna. Full earth scanning data (if any) will not be disseminated.

Update to compression of MTSAT1R data
At 10:00 UTC, on 11/03/09, the compression for the MTSAT1R 3.8 channel will be enabled. This will use the same wavelet compression used by the other MTSAT1R channels.

On 31 March 2009 EUMETSAT will introduce a registration requirement for EUMETCast access to all level 2 satellite products generated by EUMETSAT and the Satellite Application Facilities (SAFs). After this date, only registered users will continue to receive level 2 products through EUMETCast. The registration requirement is being introduced to allow EUMETSAT and its SAFs greater visibility of product usage. New EUMETCast users will be able to select their choice of level 2 product sets (Meteosat, Metop/NOAA, Ocean Sea Ice, Land Analysis and Ozone & Atmospheric Chemistry) via the online registration form. Existing EUMETCast user may request a continuation of access to these products by sending an email to the User Helpdesk via
ops@xxxxxxxxxxxx.

The registration requirement comes into force on 31 March 2009 and existing users are kindly requested to indicate their product requirements before this date to avoid
any unnecessary loss of service.


INFORMATION:
For further information, please contact the EUMETSAT User Services Helpdesk
Tel: +49 6151 807 366
Fax: +49 6151 807 379
Email: ops@xxxxxxxxxxxx
www.eumetsat.int



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