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G4ROA > WXSAT 13.10.08 09:45l 397 Lines 12973 Bytes #999 (0) @ WW
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Subj: WX Sat Status report 13/10
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WEATHER SATELLITES
================
APT, DIGITAL and GEOSTATIONARY WEEKLY STATUS.
==========================================
Author : Douglas S Deans. dsdeans@tiscali.co.uk
Section 4 has updates.
SECTION 1: POLAR APT/LRPT REPORT -- 13th October 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 -- 13th October 2008
==============================================
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 Good
NOAA 18 1707.0 RHCP HRPT Good
Feng Yun 1D 1700.4 RHCP CHRPT Good
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
LAUNCHES.
NOAA N' launch.....February 2009.
Douglas Deans.
SECTION 3: CONTINENTAL GEOSTATIONARY WORLD
===========================================
WEATHER SATELLITE REPORT -- 13th October 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 : 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 (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 : 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).
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 -- 13th October 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.
General Note updated.
Meteorological Product 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.
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.
Ground Segment.
Due to essential maintenance on 14/08/08 between 08.00 and 12.00 UTC,
Archive online ordering will not be available.
Due to essential maintenance on 14/10/08 between 12:00 and 14:00 UTC there
is a risk of interruption to the following services:
Meteosat-9 HRIT SEVIRI Data
Meteosat-9 LRIT SEVIRI Data
Meteosat-9 Meteorological Products
Meteosat 8 RSS.
Due to sun co-linearity from 07/10/08 to 17/10/08 between 11:00 and 11:20
UTC users may experience interruptions.
The Meteosat-8 Rapid Scanning Service will be interrupted from 18/11/08
till
18/12/08 for the annual one month full earth scanning.
Full earth scanning data (if any) will not be disseminated except during
Meteosat-9 decontamination operations.
Meteosat 9.
Due to sun co-linearity from 06/10/08 to 16/10/08 repeat cycles 11:30 and
11:45 UTC may be interrupted or not available.
A Meteosat-9 SEVIRI decontamination is planned to start during week 49.
During this time Meteosat-8 will be the prime mission spacecraft.
Further details will be provided in due time.
Meteorological Product Update.
On 16/10/08 at 10:00 UTC the fire detection product (FIR) will be updated
with an improved algorithm.
The new algorithm significantly improves the detection of fires (better
sensibility, better temporal consistency) while also reducing the number
of
false alarms.
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 a MTSAT-1R_140E manoeuvre on 16/10/08 at 08:15 UTC and on 19/10/08
at
09:00 UTC, images may not be available for up to 6 hours following the
manoeuvre.
IODC.
Due to a Meteosat-7 manoeuvre on 14/10/08 at 04:28 UTC, users may
observe degraded image quality for up to 6 hours after the manoeuvre.
Metop-A.
13/10/2008 19:39 ASCAT: Gain compression.
19/10/2008 15:36 - 20/10/2008 01:44. GOME : Moon calibration.
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: 07:07 on 13 Oct 2008
Message sent using WinPack V6.70 (R)
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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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