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G4ROA > WXSAT 29.09.08 10:21l 411 Lines 13763 Bytes #999 (0) @ WW
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Subj: WX Sat Status report 29/9
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Sent: 080929/0806Z @:GB7COV.#29.GBR.EU #:51516 [Coventry] $:E11231G4ROA
From: G4ROA@GB7COV.#29.GBR.EU
To : WXSAT@WW
WEATHER SATELLITES
================
APT, DIGITAL and GEOSTATIONARY WEEKLY STATUS.
==========================================
Author : Douglas S Deans. dsdeans@tiscali.co.uk
Sections 2 and 4 have updates.
SECTION 1: POLAR APT/LRPT REPORT -- 29th September 2008
===============================================
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
Metop-A 137.100 (LRPT) off see Note 3
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 know 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.
22/07/08 - There is some recent evidence that NOAA 9 is once again
transmitting a spurious carrier from time to time. (I am grateful to
John Cooper from Oxford 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. Elements are available from :-
http://www.space-track.org and
http://celestrak.com/NORAD/elements/
LAUNCHES.
NOAA N' launch.....February 2009.
Douglas Deans.
Dunblane, Scotland.
SECTION 2: POLAR HRPT/AHRPT REPORT -- 29th September 2008
================================================
CHANGES SINCE LAST REPORT.
Note 4. updated.
THIS WEEK'S POSSIBLE EVENTS.
Metop-A to start partial AHRPT direct readout service 29th September
See Note 4.
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
Feng Yun 1D 1700.4 RHCP CHRPT Good
Metop-A 1701.3 RHCP AHRPT off (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 will commence a partial Metop-A AHRPT
Direct Readout service. Due to the operational constraints, the
activation of AHRPT will be 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
LAUNCHES.
NOAA N' launch.....February 2009.
Douglas Deans.
SECTION 3: CONTINENTAL GEOSTATIONARY WORLD
===========================================
WEATHER SATELLITE REPORT -- 29th September 2008
========================================
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 : 11th April 2007............
North America
----------------
East.
Satellite : GOES 12 (75.0° W)
Data : GVAR (digital) - 1685.7 MHz
LRIT (digital) -1691 MHz
Operational : Present .......
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 (digital) - 1691 MHz.
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 : 17th October 2006.
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 : Present ............
Asia & Oceania (Japanese Operated Satellites)
-----------------------------------------------------
Satellite : MTSAT-1R (140° E) (note 5.)
Data : HRIT (digital) and LRIT(digital) on 1691 MHz.
(Note 6.)
Operational : Present......
Asia & Oceania (Chinese Operated Satellites)
----------------------------------------------------
Satellite : Feng Yun 2C (105°E)
Data : SVISSR (digital) and LRIT (digital)
Operational : Present.............
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).
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.
Feng Yun 2E expected to launch by end of 2008.
Any reports for this section should be sent to :-
Douglas Deans dsdeans@tiscali.co.uk
SECTION 4: EUMETCAST REPORT -- 29th September 2008
==========================================
Service Status Hotbird Satellite (13° E)
EARS On Transponder 117: 10853.44 MHz
Meteosat 8 (RSS) On Transponder 117: 10853.44 MHz
Meteosat 9 On Transponder 117: 10853.44 MHz
DWDSAT On Transponder 117: 10853.44 MHz
EPS(Metop-A) On Transponder 117: 10853.44 MHz
CHANGES SINCE LAST REPORT.
Meteosat 8 RSS Note updated.
General Note updated.
FSD Note updated.
IODC Note updated.
Metop-A Note updated.
THIS WEEK AND FUTURE POSSIBLE EVENTS.
General Note.
Due to sun interferences of the disseminating 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.
Please use following link to determine the time for your location (enter
satellite, location and antenna size):
http://www.satellite-calculations.com/SUNcalc/SUNcalc.htm
All C/Band Africa users should also expect a period of degradation from
05/10/08 to 13/10/08 between 10:45 and 11:05 UTC.
All C/Band Americas users should also expect a period of degradation from
04/10/08 to 12/10/08 between 10:35 and 15:55 UTC.
GROUND SEGMENT
Due to essential maintenance on 30/09/08 from 08:00 to 16:00 UTC there is
some risk of interruption or delay to all EUMETSAT disseminated services
and
Archive online ordering.
The EUMETSAT Archive will be carrying out essential maintenance from
01/10/08 from 08:00 to 14:00 UTC.
In this period the Archive will not be available for data retrieval. We
apologise for the inconvenience and thank our users for their
understanding.
In the last quarter of 2008 the EUMETCast-Europe service will move from
HOT
BIRD 6 at 13 degrees E to EUROBIRD 9 at 9 degrees E.
For further information on this transition, please see:
http://www.eumetsat.int/Home/Main/What_We_Do/EUMETCast/SP_1217320833376?l=e
n
The operational data has resumed via EUROBIRD-9. We will make an
announcement if any further interruptions are expected.
Meteosat 8 RSS.
Due to a Meteosat-8 North-South orbit inclination manoeuvre on 30/09/08 at
04:03 UTC, the regular monthly rapid scanning interruption will take place
between 30/09/08 at 03:30 UTC and 02/10/08 at 09:00 UTC for
scheduled full earth scanning and Ground Segment essential maintenance.
Full earth images (if any) will not be disseminated.
Due to sun co-linearity from 07/10/08 to 17/10/08 between 11:00 and 11:20
UTC users may experience interruptions.
FSD.
Due to GOES12_75W eclipse season from 14/08/08 to 19/10/08, the 04:00,
05:00
and 06:00 UTC files may not be available.
Due to GOES11_135W eclipse season from 14/08/08 to 30/10/08, the 08:00 and
09:00 UTC files may not be available.
Due to MTSAT-1R_140E eclipse season from 22/08/08 to 20/10/08, the 14:00
and
15:00 UTC files may be not available.
Due to sun co-linearity from 04/10/08 to 11/10/08,the 03:00 UTC images
may
be not available.
IODC.
Due to Meteosat-7 eclipse season from 17/08/08 to 04/10/08, slots 38 to 43
may not be available.
Due to sun co-linearity between 22/09/08 and 30/09/08 the 07:28 AW and
07:46
AW formats may not be available.
Metop-A.
A-HRPT: activity is scheduled from 29/09/08 09:45 orbit 10097 onwards. See
note below.
Internal maintenance 29/09/08
IASI: product outage of 6 minutes can be expected between 06:30 and 16:00
Internal maintenance 30/09/08
A high risk period between 06:30 and 11:00.
ASCAT: Monthly Calibration activities are foreseen between 02/10/08 and
04/10/08.Interruptions scheduled:
02/10/08 07:16 orbit 10138
03/10/08 18:17 orbit 10159
04/10/08 08:15 orbit 10167
Note
On 29 September 2008, EUMETSAT will commence a partial Metop-A AHRPT
Direct Readout service. Due to the operational constraints, the activation
of AHRPT will be 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_Services/
SP_1117714487826?l=en
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
Any reports for this section should be sent to :-
Douglas Deans dsdeans@tiscali.co.uk
NOTES.
1. 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
====================
73's - Adrian, G4ROA @ GB7COV
Message timed: 07:58 on 29 Sep 2008
Message sent using WinPack V6.70 (R)
(Prog written by Roger Barker, G4IDE/G8MZX, Silent Key 09/09/04)
Member of:
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QTH Loc - IO92gj
NGR SP 342 765
GPS 52deg 23.15min N
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E-Mail: G4ROA@AOL.com
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