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G4ROA > WXSAT 27.09.10 12:25l 431 Lines 14957 Bytes #999 (0) @ WW
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Subj: WX Sat Status report 27/9
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Sent: 100927/0951Z @:GB7COV.#29.GBR.EU #:13819 [Coventry] $:750155G4ROA
From: G4ROA@GB7COV.#29.GBR.EU
To : WXSAT@WW
WEATHER SATELLITES
===============
POLAR APT, DIGITAL and GEOSTATIONARY WEEKLY STATUS.
===============================================
Author : Douglas S Deans. dsdeans@btinternet.com
Section 4 has updates.
SECTION 1: POLAR APT/LRPT REPORT -- 27th September 2010
===============================================
Satellite Frequency (MHz) Status Image Quality
NOAA 15 137.500 (APT) on good
NOAA 17 137.620 (APT) on Mixed. See Note 7.
NOAA 18 137.9125 (APT) on good
NOAA 19 137.100 (APT) on good
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 15 when active on this frequency.
4th June 2010 update for NOAA 9.
Mike Piper from Oregon has provided an interim update suggesting that
there are signs that the tumbling which had hit a slow point is
beginning to speed up again and that interference may be a bit less.
He hopes to have a further update soon after more investigation.
My thanks to him for his report.
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.
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. NOAA continue with tests with a view to finding
a
solution.
Update 27/08/10 :- After several weeks of excellent imagery NOAA 17's
APT has again deteriorated.
8. 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 -- 27th September 2010
================================================
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 1702.5 LHCP HRPT Mixed ( note 3)
NOAA 17 1698.0 RHCP HRPT mixed. See note 7.
NOAA 18 1707.0 RHCP HRPT Good
NOAA 19 1698.0 RHCP HRPT Good
Feng Yun 1D 1700.4 RHCP CHRPT Good
Feng Yun 3A 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.
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. My thanks
to
Johnny Lin for drawing this to my attention.
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.
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
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. NOAA continue with tests with a view to finding
a
solution.
Since 05/05/10 there have been some periods of improved imagery.
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 27/08/10 :- After several weeks of excellent imagery NOAA 17's
HRPT is again bar-coded from time to time.
LAUNCHES.
None due in the near future.
SECTION 3: CONTINENTAL GEOSTATIONARY WORLD
===========================================
WEATHER SATELLITE REPORT -- 27th September 2010
========================================
CHANGES SINCE LAST REPORT.
None.
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 7).
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 : GOMS N2 / ELECTRO-L
sometimes called ELEKTRO -L/N1
Data : HRIT/LRIT.
Operational : No. launch date delayed indefinitely.
Asia (European Operated Satellites)
----------------------------------------
Satellite : Meteosat 7 (57.5°E)
HRI (digital) - 1691 MHz
Wefax (analogue) occasionally for ranging purposes
only.
Operational : Yes.
Satellite : Meteosat 6 (67.5°E) (Note 2).
Asia (Indian Operated Satellite)
-----------------------------------
Satellite : Metsat
Data : None available.
Operational : Yes.
Satellite : Insat 3A (Note 3.)
Data : VHRR (digital) 2599 MHz
Operational : Yes.
Asia & Oceania (Japanese Operated Satellites)
-----------------------------------------------------
Satellite : MTSAT-1R (140° E) (note 5.)
Data : HRIT (digital) and LRIT(digital) on 1691 MHz.
(Note 6.)
Operational : Standby but used to relay direct readout data from MTSAT-2.
Satellite : MTSAT-2 (145º E).
Data : HRIT (digital) and LRIT(digital) on 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. Meteosat-6 arrived on station at 67.5 degrees East, on the 27 April
2007.
After a short testing campaign, Meteosat-6 is now supporting the DCP
mission over the Indian Ocean during eclipse periods.
3. Insat 3A is a combined data and meteorological satellite.
4. 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
5. This satellite is also known as HIMAWARI 6.
6. HiRID and WEFAX was discontinued on 12th March 2008. It was replaced
with HRIT/LRIT (after many months of dual dissemination).
7. Only LRIT (1691.0 MHz) is provided in direct readout.
Full HRIT and LRIT service from Eumetcast.
LAUNCHES.
None due.
SECTION 4: EUMETCAST REPORT -- 27th September 2010
==========================================
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.
Metop and NOAA Global Data Service Note added.
THIS WEEK AND FUTURE POSSIBLE EVENTS.
GENERAL NOTE.
Meteosat Straylight Predictions for Autumn 2010 available on EUMETSAT
Website :
http://www.eumetsat.int/Home/Main/ServiceStatus/index.htm?l=en
(See Section "Operational Schedules")
IODC.
12 August 2010 - 02 October 2010.
Meteosat-7 Autumn Eclipse Season.
Slots 37-43 may not be available.
18 September 2010 - 27 September 2010
Meteosat-7 Sun Co-linearity
07:28 AW and 07:46 AIW formats may not be available.
METOP AND NOAA GLOBAL DATA SERVICE.
27 September 2010 08:39 UTC.
The Channel 3 DC offset level of MHS onboard Metop-A will be re-adjusted.
During and right after this operation, some MHS Level 1B Earth view
radiances, in the global and EARS services, could be of degraded quality
due
to missing or corrupted calibration information. A minor impact can also
be
expected in the water vapour data of the ATOVS Level 2 sounding product.
27 - 30 September 2010.
ASCAT external calibration.
Short outages of the ASCAT GDS Level 1, soil moisture and global and
regional winds products can be expected.
27 September 2010 07:17 UTC orbit 20438
28 September 2010 18:17 UTC orbit 20459
29 September 2010 08:15 UTC orbit 20467
30 September 2010 19:16 UTC orbit 20488
29 September 2010.
IASI Principal Component Scores products available on EUMETCast
For full details, please see :
http://www.eumetsat.int/Home/Main/News/OperationalNews/800964?l=en
THIRD-PARTY DATA AND PRODUCTS.
12 August 2010 - 01 November 2010.
GOES11_135W Autumn Eclipse Season.
08:00 UTC and 09:00 UTC files may be unavailable or incomplete.
14 August 2010 - 17 October 2010.
GOES13_75W Autumn Eclipse Season.
05:00 UTC and 06:00 UTC files may be unavailable or incomplete.
21 August 2010 - 05 September 2010.
MTSAT-2_145E Autumn Eclipse Season.
15:00 UTC files may be unavailable or incomplete.
FUTURE EVENTS.
Metop and NOAA Global Data Service.
29 September 2010.
IASI Principal Component Scores products available on EUMETCast
For full details, please see :
http://www.eumetsat.int/Home/Main/News/OperationalNews/800964?l=en
Metop and NOAA Global and Regional Data Service.
05 October 2010 07:00 UTC - 06 October 2010 11:00 UTC.
An out-of-plane manoeuvre is scheduled between the above times.
The following products will not be available:
All products from AMSU-A, ASCAT, ATOVS, GOME-2, GRAS, IASI, MHS, SEM, in
the
Metop Global Data Service and Regional Data Service, will not be
available.
The AVHRR GDS Level 1 products and AVHRR regional data from Metop-A will
be
temporarily degraded.
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-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 => Weather Satellites, Using EUMETCast
or Satellite Tools, MSG
Data
Manager.
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: 09:45 on 27 Sep 2010
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Member of:
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E-Mail: G4ROA@AOL.com
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