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G4ROA > WXSAT 04.05.09 08:53l 434 Lines 14929 Bytes #999 (0) @ WW
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Subj: WX SAT status report 4/5
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To : WXSAT@WW
WEATHER SATELLITES
================
POLAR APT, DIGITAL and GEOSTATIONARY WEEKLY STATUS.
===============================================
Author : Douglas S Deans. dsdeans@tiscali.co.uk
Sections 1, 2, 3 and 4 have updates.
SECTION 1: POLAR APT/LRPT REPORT -- 4th May 2009
==========================================
Satellite Frequency (MHz) Status Image Quality
NOAA 15 137.500 (APT) on good
NOAA 17 137.620 (APT) on good
NOAA 18 137.100 (APT) on good
NOAA 19 137.9125(APT) on see Note 6
Metop-A 137.100 (LRPT) off see Note 3
CHANGES SINCE LAST REPORT.
Note 1 updated.
THIS WEEK'S POSSIBLE EVENTS.
Possible switch-on of NOAA 19 AVHRR IR channel for APT.
(should happen eventually !).
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.
Latest report below.
01/05/09 - Report of consistent interference on NOAA 15 signal when
NOAA 9 footprint overlaps. My thanks to Steven Ross for this 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. For several weeks the APT will carry 2 visible images (channels 1 and
2). The infra-red system requires out-gassing before being switched
on and is the reason for the delay (usually about 2/3 weeks) in its
operation. My understanding is that the outgassing prevents
precipitation (and contamination) when the coolers are switched on.
Thereafter the APT format should follow the norm of Channel 2
(visible)
and channel 4 (IR) during daylight passes, switching automatically
to channels 3 (3A) and 4 during darkness.
Note : It seems that the normal APT channel arrangement is not applied
until the satellite is operational.
7. Elements are available from :-
http://www.space-track.org and
http://celestrak.com/NORAD/elements/
LAUNCHES.
None due.
SECTION 2: POLAR HRPT/AHRPT REPORT -- 4th May 2009
===========================================
CHANGES SINCE LAST REPORT.
Feng Yun 1D not transmitting (see Note 6).
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 Good
NOAA 18 1707.0 RHCP HRPT Good
NOAA 19 1698.0 RHCP HRPT Good
Feng Yun 1D 1700.4 RHCP CHRPT off (note 6)
Feng Yun 3A see note 5
Metop-A 1701.3 RHCP AHRPT Good (note 4)
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: Scan motor performance has recently improved.
4. On 29 September 2008, EUMETSAT commenced a partial Metop-A AHRPT
Direct Readout service. Due to the operational constraints, the
activation of AHRPT is for a limited geographical region covering
the North Atlantic and European area (southbound passes only). This
service is being introduced for a trial period of up to 2 months,
following which the activation scenario will become operational. For
further details on this service see:
http://www.eumetsat.int/Home/Main/Access_to_Data/Metop__amp__NOAA_Servic
es/SP_1117714487826?l=en
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. Thanks to all those who sent me reports confirming problems with FY 1D.
In particular I would like to thank Nigel Atkinson of the UK Met.
office
for keeping me continually updated. The Chinese have confirmed that
there is an issue with the satellite.
LAUNCHES.
None due.
SECTION 3: CONTINENTAL GEOSTATIONARY WORLD
===========================================
WEATHER SATELLITE REPORT -- 4th May 2009
===================================
CHANGES SINCE LAST REPORT.
GOES O launch note updated.
THIS WEEK'S POSSIBLE EVENTS.
None.
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 12 (75.0° 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
South America
----------------
Satellite : GOES 10 (60°W)
GVAR (digital) - 1685.7 MHz
LRIT - No service.
Asia (Russian Operated Satellite)
--------------------------------------
Satellite : GOMS N2 / ELECTRO-L
Data : HRIT/LRIT.
Operational : Launch date unknown.
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 : Present....
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 : Yes.
Asia & Oceania (Chinese Operated Satellites)
----------------------------------------------------
Satellite : Feng Yun 2C (105°E)
Data : SVISSR (digital) and LRIT (digital)
Operational : Yes.
Satellite : Feng Yun 2D (86.5°E).
Data : SVISSR (digital) and LRIT (digital)
Operational : Yes. Parallel operation with 2C.
(My thanks to Johnny Lin for the update).
Satellite: Feng Yun 2E (123.3° E)
Data : SVISSR (digital) and LRIT (digital)
Operational : No. Commissioning.
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 7 (175 W) 1690.725 MHz.
GOES 11 (135 W) 1690.725 MHz
GOES 12 (74.5 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.
GOES O ....... Launch further delayed from mid May.
SECTION 4: EUMETCAST REPORT -- 4th May 2009
=====================================
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
CHANGES SINCE LAST REPORT.
General Note added.
Meteosat 8 RSS Note updated.
Meteosat 9 Note added.
FSD Note updated.
IODC Note added.
Metop Note updated.
THIS WEEK AND FUTURE POSSIBLE EVENTS.
General Note.
Due to essential ground segment maintenance on 05/05/09 between 09:00 and
10:00 UTC, there is a risk of interruption to the following services:
0 Degree Service.
0 Deg. SEVIRI High Rate Meteosat-9. Foreign Satellite Data.
0 Deg. SEVIRI Low Rate Meteosat-9. Meteorological Data Distribution.
0 Deg. Meteorological Products Meteosat-9. Data Collection and
Retransmission
Service
RSS Service
SEVIRI High Rate Meteosat-8. SEVIRI Low Rate Meteosat-8.
Meteorological Products Meteosat-8.
Due to essential maintenance on 06/05/09 between 09:00 and 15:00 UTC,
there
may be up to a 1 minute delay in nominal timeliness affecting the
following
services: Internet, RMDCN and EumetCast dissemination.
Due to essential maintenance on 07/05/09 between 09:00 and 11:00 UTC,
there
may be up to a 1 minute delay in nominal timeliness affecting the
following
services: MTP products only on Internet, RMDCN and EumetCast
dissemination.
On 07/05/09, EUMETSAT will combine the LEO and Meteosat Operations Weekly
Schedules into one generic Weekly Operations Schedule. The common Weekly
Operations Schedule will be delivered to the User community via EUMETCast,
the UNS Web pages and as part of the email alert service. The delivery
format on EUMETCast will be ASCII and the target directory will be
Info-Channel-2. Users registered for email alerts will have their
existing
subscription automatically transferred to the new combine Weekly
Operations
Schedule.
Meteosat 8 RSS.
The rapid scanning service will be suspended between 05/05/09 at 09:00 UTC
and 06/05/09 at 09:00 UTC for scheduled full earth scanning and Ground
Segment essential maintenance. Full earth images (if any) will not be
disseminated.
Meteosat 9.
Due to a Meteosat-9 North-South orbit inclination manoeuvre followed by a
spin rate adjustment on 06/05/09 at 15:17 UTC, users may experience up to
24 hours of degraded quality of Meteosat-9 SEVIRI images and
meteorological
products . In addition, the east-west position of the Meteosat-9 SEVIRI
HRV
channel image will not be changed between 15:00 and 17:00 UTC.
FSD.
Due to a GOES11_135W manoeuvre planned for 05/05/09 at 13:00 UTC, there
will
be no images at 13:00 UTC. Images may be incomplete for up to 6 hours
after
the manoeuvre.
Due to essential maintenance in Lannion on 06/05/09 from 07:30 to 13:00
UTC,
GOES_12 files will be unavailable. MTSAT and GOES_11 files may be
unavailable.
IODC.
There will be a Meteosat-7 IR gain change from 11 to 10 on 05/05/09 at
09:28
UTC.
Due to a Meteosat-7 manoeuvre on 05/05/09 at 23:28 UTC, users may observe
degraded image quality for up to 6 hours after the manoeuvre.
Metop-A.
EPS
04/05/2009 Delayed ASCAT product maintenance. Upgrade of ASCAT Level 2
Soil
Moisture processor to version 1.3.0. Note that this release corrects the
incidence angle-dependent bias for the data corresponding to the near left
swath (see for reference
http://oiswww.eumetsat.org/UNS/webapps/showData.do?index=4&type=21
where the problem was reported).
EUMETCAST and External Services.
06/05/2009 09:00-15:00 Comms Maintenance. A short interruption will occur
during this period.
This will affect Eumetcast, OIS, RMDCN and SAFs.
JASON II
05/05/2009 06:00 Routine spacecraft manoeuvre for Jason-2/OSTM
12/05/2009 16:00 - 13/05/2009 12:00 Ground Station maintenance. High risk
period for all products.
The following EPS GDS products are available on Eumetcast.
EPS-2 PID 510 Metop AMSA operational
EPS-3 PID 510 Metop ASCAT operational
EPS-4 PID 510 Metop ATOVS 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-10 PID 510 Metop AVHRR operational
EPS-11 PID 510 Metop IASI operational
EPS-13 PID 510 NOAA AMSA operational
EPS-14 PID 510 NOAA ATOVS 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
NOTES.
1. Reports for all sections should be sent to :-
Douglas Deans dsdeans@tiscali.co.uk
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: 07:36 on 04 May 2009
Message sent using WinPack V6.70 (R)
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E-Mail: G4ROA@AOL.com
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