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WEATHER SATELLITES
===============-- 10th October 2011
POLAR APT, DIGITAL and GEOSTATIONARY WEEKLY STATUS.
==============================================

Author : Douglas S Deans. dsdeans@...
Sections 2 and 4 have updates.

SECTION 1: POLAR APT/LRPT REPORT
===============================
Satellite Frequency (MHz) Status Image Quality

NOAA 15 137.620 (APT) on good. See Note 8.
NOAA 17 137.500 (APT) on No images. See Notes 7&8.
NOAA 18 137.9125 (APT) on good
NOAA 19 137.100 (APT) on good but see Note 6
Metop-A 137.100 (LRPT) off see Note 3
Meteor M N1 137.100 (LRPT) sporadic see Note 6

CHANGES SINCE LAST REPORT.
None.

THIS WEEK'S POSSIBLE EVENTS.
None expected.

NOTES.

1. Three of the older NOAA weather satellites which have been
decommissioned and are tumbling freely are known to sporadically put out
a carrier on 137.500 MHz. The satellites are TIROS-N, NOAA 6 and NOAA 9
When the relevant footprints overlap this will cause interference to
NOAA 17 when active on this frequency.
--- 20th May 2011 update for NOAA 9. ---
Sadly although no signals had been heard from NOAA 9 since October 2010,
I have received 2 reports from Mike Piper and Mike Kenny confirming that
NOAA 9 is back. Of course the only other APT satellite on 137.500 MHz
is NOAA 17 with its stalled scan motor so the interference is not a
problem. My thanks to Mike and Mike for the reports.

2. NOAA 16's APT transmission system failed a few months after launch.

3. Metop-A's A-side LRPT transmitter has failed. Currently the redundant
B-side transmitter is off until further notice (No further service
expected due to interference with HIRS instrument).

4. NOAA 14 was decommissioned on 23rd May 2007.

5. NOAA 12 was decommissioned on 10th August 2007.

6. Signals have been reported from Meteor M N1 but they are
sporadic with periods off. Although classed as LRPT it does not
conform to the CGMS standard.
During in-fill carrier phase this satellite can cause interference to
NOAA 19 when footprints overlap.

7. NOAA 17 has scan motor problems with rising motor currents.
Constant rephase by the MIRP was causing data dropouts on all the HRPT
stream and APT and GAC derivatives.
Auto re-phase has now been disabled and the resulting AVHRR products are
almost all unusable. Daily MIRP rephasing via the Stored Command Table
began on 18 May 2010 (10/138) - at the first pass over the South Pole
each day.
Update 29/09/10 :- Further deterioration in scan motor performance with
no useable data from the AVHRR instrument. Scan motor has stalled.

8. As of 12th October 2010 at 15.00 UTC the following APT frequencies
applied :-
NOAA 17 137.500 MHz.
NOAA 15 137.620 MHz.

9. Elements are available from :-
http://www.space-track.org and
http://celestrak.com/NORAD/elements/

LAUNCHES.
None due in the near future.


SECTION 2: POLAR HRPT/AHRPT REPORT -- 10th October 2011
=================================================
CHANGES SINCE LAST REPORT.
NPOESS Preparatory Project (NPP) satellite launch delayed.

THIS WEEK'S POSSIBLE EVENTS.
None expected.

Satellite Frequency Antenna Mode Image Quality
(MHz)
NOAA 15 1702.5 Omni HRPT Weak
NOAA 16 1698.0 RHCP HRPT Good ( note 3)
NOAA 17 1698.0 RHCP HRPT No images. See note 7.
NOAA 18 1707.0 RHCP HRPT Good
NOAA 19 1698.0 RHCP HRPT Good
Feng Yun 1D 1700.4 RHCP CHRPT see note 8.
Feng Yun 3A 1704.5 see note 5.
Feng Yun 3B 1704.5 see note 5.
Metop-A 1701.3 RHCP AHRPT Good (note 4)
Meteor M N1 1700 See note 6.

NOTES.

1. NOAA 14 was decommissioned on 23rd June 2007.

2. NOAA 12 was decommissioned on 10th August 2007.

3. On Friday 19th September 2003 NOAA 16 developed AVHRR synch. problems
similar to those on NOAA 14 (and previously NOAA 15).
Since then reports have been mixed. Some periods of good data, some
poor.
Update 9th August 2011 :- Reports suggest that images have been
excellent for a long period although NOAA still class AVHRR operational
with limitations.

4. On 25 May 2009, Eumetsat extended the coverage of the Advanced High
Resolution Picture Transmission (AHRPT) system on Eumetsat's Metop-A
polar-orbiting satellite. The improved service provides additional
coverage over the Gulf of Mexico and Indian Ocean regions.
For more information, please see:
http://www.eumetsat.int/Home/Main/Media/Features/710601

5. Feng Yun 3A was declared operational on 12th January 2009.
I am also grateful to Dave Wright of Dartcom for confirming that
unfortunately (as usual) the Chinese have not strictly complied with the
CGMS AHRPT Global Standard so reception using a standard Metop AHRPT
receiver is not possible.
Update: The second in the series, Feng Yun 3B was launched on
4th November 2010. I expect the information above for 3A will
equally apply to 3B.
My thanks to Johnny Lin for drawing this to my attention.

6. It appears that Meteor M N1 is neither using full HRPT or AHRPT and
cannot be received using current receivers. Please see other WSR mails
for further explanation :-
http://tech.groups.yahoo.com/group/weather-satellite-reports/message/2098.
Continual sporadic problems with transmission.

7. NOAA 17 has scan motor problems with rising motor currents.
Constant rephase by the MIRP was causing data dropouts on all the HRPT
stream and APT and GAC derivatives.
Auto re-phase has now been disabled and the resulting AVHRR products are
almost all unusable.
Daily MIRP rephasing via the Stored Command Table began on 18 May 2010
(10/138) - at the first pass over the South Pole each day.
Update 29/09/10 :- Further deterioration in scan motor performance with
no useable data from the AVHRR instrument. Scan motor has stalled.

8. There have been a number of reports of no data from FY1D since 6th
June 2011. Also noted that there has been no images for FY1D posted
on the NOAA Alaska Region Headquarters site since this date.
Update 16/07/2011 :- Satellite has attitude control problems. Not known
if recovery will be possible.

LAUNCHES.
NPOESS Preparatory Project (NPP) satellite launch delayed to 27th October
2011.


SECTION 3: GEOSTATIONARY REPORT -- 10th October 2011
==============================================
CHANGES SINCE LAST REPORT.
None.

THIS WEEK'S POSSIBLE EVENTS.
None expected.

Europe & Africa
------------------
Satellite : Meteosat 8 (9.5E)
Data : HRIT (digital) and LRIT (digital)
Operational : Yes, RSS and Standby for Meteosat 9.

Satellite : Meteosat 9 (0) (note 6).
Data : HRIT (digital) and LRIT (digital)
Operational : Yes.

North America
----------------
East.

Satellite : GOES 13 (75 W).
Data: GVAR (digital) - 1685.7 MHz
LRIT (digital) - 1691 MHz
Operational: Yes.

West.

Satellite : GOES 11 (135W)
Data : GVAR (digital) - 1685.7 MHz
LRIT (digital) - 1691 MHz
Operational : Yes.

Satellite : GOES 14 (105W)
Data : In storage.

South America
----------------
Satellite : GOES 12 (60W)
Data : GVAR (digital) - 1685.7 MHz
Operational : Yes on South American project.

Asia (Russian Operated Satellite)
--------------------------------------

Satellite : ELECTRO-L (76 E)
Data : HRIT/LRIT.
Operational : Yes.

Asia (European Operated Satellites)
----------------------------------------
Satellite : Meteosat 7 (57.5E)
HRI (digital) - 1691 MHz
Wefax (analogue) occasionally for ranging purposes
only.
Operational : Yes.

Asia (Indian Operated Satellite)
--------------------------------
Satellite : Metsat
Data : None available.
Operational : Yes.

Satellite : Insat 3A (Note 2.)
Data : VHRR (digital) 2599 MHz
Operational : Yes.

Asia (Korean Operated Satellite)
-----------------------------------
Satellite : COMS (128.2 E)
Data : HRIT (digital) and LRIT (digital)
Operational : Yes.

Asia & Oceania (Japanese Operated Satellites)
------------------------------------------------
Satellite : MTSAT-1R (140 E) (note 4.)
Data : HRIT (digital) - 1687.1 MHz.
LRIT(digital) - 1691 MHz.
(Note 5.)
Operational : Standby but is used to relay direct readout data from MTSAT-2.

Satellite : MTSAT-2 (145 E).
Data : HRIT (digital) - 1687.1 MHz
LRIT(digital) - 1691 MHz.
Operational : Yes (see above for MTSAT-1R)

Asia & Oceania (Chinese Operated Satellites)
----------------------------------------------------
Satellite : Feng Yun 2D (86.5E).
Data : SVISSR (digital) and LRIT (digital)
Operational : Yes.

Satellite: Feng Yun 2E (104 E).
Data : SVISSR (digital) and LRIT (digital)
Operational : Yes.

NOTES.

1. Meteosat 7 stopped its 0 service at 09.00 UTC on 14th June 2006.

2. Insat 3A is a combined data and meteorological satellite.

3. For those interested in EMWIN data, the following sats/frequencies apply.

GOES 11 (135 W) 1690.725 MHz
GOES 13 (75 W) 1690.725 MHz
For further info. there are many sources but the following is
particularly informative:-
http://iwin.nws.noaa.gov/emwin/user-intro.htm

4. This satellite is also known as HIMAWARI 6.

5. HiRID and WEFAX was discontinued on 12th March 2008. It was replaced
with HRIT/LRIT (after many months of dual dissemination).

6. Only LRIT (1691.0 MHz) is provided in direct readout.
Full HRIT and LRIT service from Eumetcast.

LAUNCHES.
None due in near future.

SECTION 4: EUMETCAST REPORT -- 10th October 2011
===========================================

Service Status Eurobird 9A Satellite (9 E)

EARS On Transponder TP63: 11976.82 MHz
Meteosat 8 (RSS) On Transponder TP63: 11976.82 MHz
Meteosat 9 On Transponder TP63: 11976.82 MHz
DWDSAT On Transponder TP63: 11976.82 MHz
EPS(Metop-A) On Transponder TP63: 11976.82 MHz
Jason On Transponder TP63: 11976.82 MHz

CHANGES SINCE LAST REPORT.
Meteosat 9 Note updated.
IODC Note added.
Metop and NOAA Global Data Service Note added.
Metop and NOAA Regional Data Service Note added.
Third-Party Data and Products Note updated.
Future Events Note updated.

THIS WEEK AND FUTURE POSSIBLE EVENTS.
GENERAL NOTE.
05 October 2011 - 18 October 2011.
Sun interference may affect the EUMETCast broadcast satellites.
Users might experience lower signal margin or outages on EUMETCast.
The exact times and durations of the signal degradation or outages depends
on the reception location.
For full details, please see:
http://www.eumetsat.int/Home/Main/News/ProductServiceNews/810270?l=en

Meteosat Straylight Predictions for Autumn 2011 are available on EUMETSAT
Website:
http://www.eumetsat.int/Home/Main/ServiceStatus/index.htm?l=en
(See Section "Operational Schedules")

METEOSAT 9.
11 October 2011 - 22:43 UTC.
Meteosat-9 East West Station Keeping Manoeuvre.
Users may experience degraded image quality for up to 3 hours following the
manoeuvre.
Users may experience degraded meteorological product quality for up to 3
hours following the manoeuvre.

08 October 2011 - 18 October 2011.
Sun Co-linearity.
Repeat cycles 11:30 and 11:45 UTC may be interrupted or not available.

METEOSAT 8 (RSS).
06 October 2011 - 15 October 2011.
Sun Co-linearity.
Repeat cycles 11:00 to 11:20 UTC may be interrupted or unavailable.

IODC.
11 October 2011 - 00:58 UTC.
Meteosat-7 East West Station Keeping Manoeuvre.
Users may observe degraded image quality for up to 6 hours following the
manoeuvre.

METOP AND NOAA GLOBAL DATA SERVICE.
10 October 2011.
ASCAT Gain Compression.
A short outage of all ASCAT products can be expected.

ASCAT extensive calibration.
Short outages of the ASCAT GDS Level 1, soil moisture and global and
regional winds products can be expected.

2011-10-11 17:56 orbit 25829
2011-10-11 19:37 orbit 25830
2011-10-12 07:55 orbit 25837
2011-10-12 19:16 orbit 25844
2011-10-13 07:34 orbit 25851
2011-10-13 18:55 orbit 25858
2011-10-14 07:13 orbit 25865
2011-10-14 18:34 orbit 25872
2011-10-15 08:33 orbit 25880
2011-10-15 18:13 orbit 25886
2011-10-16 08:12 orbit 25894
2011-10-16 19:33 orbit 25901

METOP AND NOAA REGIONAL DATA SERVICE.
EARS-ATOVS.
Following the Metop-A out-of-plane manoeuvre on 28/09/11, AAPP users have
reported an increasing geo-location error in generated products. This also
includes the EARS-ATOVS Metop-A products. This issue relates to the poor
quality of the publicly available Metop-A post manoeuvre TLE data. The
latest public TLE data is now of nominal quality and users should ensure
they are using this data. EARS-ATOVS has now been corrected to provide
nominal service.

THIRD-PARTY DATA AND PRODUCTS.
28 September 2011 - 17 October 2011
Jason-1.
Inclination manoeuvres are being carried out on Jason-1.
All products of the following Jason-1 Science cycles will be degraded: end
of cycle 358, cycle 359, cycle 360

15 August 2011 - 17 October 2011.
GOES East Eclipse Season.
05:00 UTC and 06:00 UTC image data may be unavailable or incomplete.

13 August 2011 - 31 October 2011.
GOES West Eclipse Season.
08:00 UTC and 09:00 UTC image data may be unavailable or incomplete.

17 August 2011 - 29 October 2011.
MTSAT Eclipse Season.
14:00 UTC and 15:00 UTC image data may be unavailable or incomplete.

FUTURE EVENTS.
General Note.
18 October 2011.
Trial Start for Compression of EPS Data.
The data disseminated in this trial should not be used for operational
purposes as EUMETSAT cannot guarantee their accuracy.
During November 2011 EUMETSAT will start to compress the EPS data that are
in the Native/PFS format before the data is sent to users via EUMETCast.
Users will need to reconfigure their systems in advance of this change.
For full details please see:
http://www.eumetsat.int/Home/Main/News/ProductServiceNews/809351?l=en

Third-Party Data and Products.
03 November 2011.
Migration of EAMNET NRT data to TPC-1 channel.
For full details please see:
http://www.eumetsat.int/Home/Main/News/ProductServiceNews/811209?l=en

Meteosat 9.
07 December 2011.
EUMETSAT plans to consolidate the way it disseminates Meteosat DCP data and
some of the changes will affect the way Users receive their data.
The main changes for the User will be:
- No DCP Bulletins will be disseminated via EUMETCast.
- No DCP Bulletins will be disseminated via MSG Direct Dissemination.
- Auxiliary Data (Quality records) will be included with the DCP data via
DCP Web accounts.
More information to come in due course.

26 October 2011 08:00 UTC.
GRAS Product outage.
Due to planned maintenance on GRAS Onboard Software,the following GRAS
product outages are anticipated:
1) Level 0/Level 1a: 5 hours and
2) Level 1b bending angles and higher: 10 hours

Meteosat 9.
08 November 2011 09:00 UTC.
EUMETSAT plans to change the gains of the SEVIRI water vapour channels
onboard Meteosat-9. A similar change was performed on Meteosat-8 on 26 May
2011.
For further details, please see:
http://www.eumetsat.int/Home/Main/News/ProductServiceNews/811378?l=en

07 December 2011.
EUMETSAT plans to consolidate the way it disseminates Meteosat DCP data and
some of the changes will affect the way Users receive their data.
The main changes for the User will be:
- EUMETCast - DCP Messages (Bulletins will no longer be distributed)
- Direct Dissemination - DCP Messages (Bulletins will no longer be
distributed)
- Internet - DCP Messages (Auxiliary Data (Quality records) will now be
included via User accounts)
- GTS - DCP Bulletins will continue to sent as usual via the GTS.
More information to come in due course.


The following EPS GDS products are available on Eumetcast.

EPS-2 PID 510 Metop AMSA operational
EPS-3 PID 510 Metop ASCAT operational
EPS-5 PID 510 Metop GOME operational
EPS-6 PID 510 Metop GRAS operational
EPS-7 PID 510 Metop HIRS operational
EPS-8 PID 510 Metop MHS operational
EPS-9 PID 510 Metop SEM operational
EPS-10 PID 510 Metop AVHRR operational
EPS-11 PID 510 Metop IASI operational
EPS-12 PID 510 Metop HKTM operational
EPS-13 PID 510 NOAA AMSA operational
EPS-15 PID 510 NOAA GAC operational
EPS-16 PID 510 NOAA HIRS operational
EPS-17 PID 510 NOAA MHS operational
EPS-18 PID 510 EPS Service News operational
EPS-19 PID 510 Test service operational
EPS-Africa PID 300 EPS Europe/Africa operational
EPS-Global PID 300 EPS Global data operational
(EPS-19 may sometimes be limited to Manufacturers)

NOTES.

1. Reports for all sections should be sent to :-
Douglas Deans. dsdeans@...

2. For further information on the Eumetcast service see :-
David Taylor's web site : http://www.satsignal.eu
or the Eumetsat web site : www.eumetsat.int

GENERAL
=======
For further weather satellite related information join GEO, Group for Earth
Observation, and receive the informative quarterly magazine. See :-
http://www.geo-web.org.uk/

To download element sets for all satellites visit the following sites :
http://www.space-track.org and
http://celestrak.com/NORAD/elements