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G4ROA > WXSAT 22.08.11 16:01l 422 Lines 14545 Bytes #999 (0) @ WW
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Subj: WX Sat Status report 22/8
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To : WXSAT@WW
WEATHER SATELLITES
===============
POLAR APT, DIGITAL and GEOSTATIONARY WEEKLY STATUS.
==============================================
Author : Douglas S Deans. dsdeans@btinternet.com
Sections 3 and 4 have updates.
SECTION 1: POLAR APT/LRPT REPORT -- 22nd August 2011
==============================================
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 -- 22nd August 2011
================================================
CHANGES SINCE LAST REPORT.
None.
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 see note 5.
Feng Yun 3B 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/20
98.
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 set for 25th October
2011.
SECTION 3: GEOSTATIONARY REPORT -- 22nd August 2011
=============================================
CHANGES SINCE LAST REPORT.
Meteosat 8 (RSS) in safe mode until further notice. No data.
THIS WEEK'S POSSIBLE EVENTS.
None expected.
Europe & Africa
------------------
Satellite : Meteosat 8 (9.5°E)
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 (135°W)
Data : GVAR (digital) - 1685.7 MHz
LRIT (digital) - 1691 MHz
Operational : Yes.
Satellite : GOES 14 (105°W)
Data : In storage.
South America
----------------
Satellite : GOES 12 (60°W)
Data : GVAR (digital) - 1685.7 MHz
LRIT (digital) -1691 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 (57.5°E)
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 (145º 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 (86.5°E).
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 -- 22nd August 2011
==========================================
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.
General Note added.
Meteosat 9 Note added.
Meteosat 8 (RSS) Note added.
Metop and NOAA Global Data Service Note updated.
Metop and NOAA Regional Data Service Note added.
SAF Products Note added.
Third-Party Data and Products Note updated.
Jason-2 Note added.
Future Events Note updated.
THIS WEEK AND FUTURE POSSIBLE EVENTS.
GENERAL NOTE.
23 August 2011 03:45 UTC and 26 August 2011 03:45 UTC.
Essential EUMETCast Maintenance.
There is a risk of interruption to all EUMETCast services for less than 1
minute during each maintenance period.
METEOSAT 9.
23 August 2011.
Normalised Difference Vegetation Index (NDVI) product available on
EUMETCast
Americas.
For full details please see:
http://www.eumetsat.int/Home/Main/News/ProductServiceNews/808830?l=en
METEOSAT 8 (RSS).
In safe mode due to satellite anomaly. No data until further notice.
23 August 2011 09:00 UTC - 25 August 2011 09:00 UTC.
Monthly RSS interruption.
Rapid Scanning Service will be suspended for scheduled Full Earth Scanning
and Ground Segment Maintenance.
Full Earth Images, if any, will not be disseminated. Upon resuming the
Rapid
Scanning Service, most meteorological products may take up to 30 minutes
to
resume. Note, the Multi-Sensor Precipitation Estimate (MPE) may take up to
18 hours to fully resume.
IODC.
09 August 2011 - 01 October 2011.
Meteosat-7 eclipse season.
Slots 37 to 43 may be unavailable.
METOP AND NOAA GLOBAL DATA SERVICE.
24 August 2011.
Changes to GRAS Level 1b BUFR files.
The files will contain the azimuth angle of the occultation plane measured
in degrees clockwise against North (previously this value was set to
missing
in the BUFR file).
Test BUFR files are available at:
ftp://ftp.eumetsat.int/pub/EUM/out/OPS/User/GRAS_L1b_BUFR/
Note that the Level 2a SAF product in BUFR is not affected by this change.
26 August 2011 18:54 - 19:45 UTC Orbit 25176.
GOME2 monthly measurements of GOME-2 polarisation (PMD) data in raw
readout
mode (PMDRAW).
Near real-time products from O3M SAF (L2 NTO) will be affected (see SAF
PRODUCTS below).
METOP AND NOAA REGIONAL DATA SERVICE.
23 August 2011.
Addition of HRPT data into EARS ASCAT.
For full details please see:
http://www.eumetsat.int/Home/Main/News/ProductServiceNews/808832?l=en
SAF PRODUCTS.
26 August 2011 18:54 - 19:45 UTC Orbit 2 510 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@btinternet.com
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/
=============================
73's - Adrian, G4ROA @ GB7COV
Message timed: 13:41 on 22 Aug 2011
Message sent using WinPack V6.80 (R)
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Member of:
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QTH Loc - IO92gj
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GPS 52deg 23.15min N
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E-Mail: G4ROA@AOL.com
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