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G4ROA > WXSAT 21.01.08 14:24l 385 Lines 12815 Bytes #999 (0) @ WW
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Subj: WX Sat status report 21/1
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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 -- 21st January 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.
29/04/2007 :- No interference noted recently from any of the above
satellites. (My thanks to Patrik Tast 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 -- 21st January 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 4)
NOAA 17 1707.0 RHCP HRPT Poor (note 3)
NOAA 18 1698.0 RHCP HRPT Good
Feng Yun 1D 1700.4 RHCP CHRPT Good
Metop-A 1701.3 RHCP AHRPT off (note 6)
NOTES.
1. NOAA 14 was decommissioned on 23rd June 2007.
2. NOAA 12 was decommissioned on 10th August 2007.
3. Problems have developed with STX-3 (1707 MHZ). Power has dropped from
approx. 8W to about 2.4W resulting on a greatly reduced signal
strength.
4. 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.
5. The following HRPT transmitter changes were effective from
30th August 2005. The re-assignments were :-
NOAA 16 changed from STX1 (1698 MHz) to STX2 (1702.5 MHz).
NOAA 18 changed from STX3 (1707 MHz) to STX1 (1698 MHz).
6. Due to a transmitter failure the AHRPT direct readout service is
off until further notice ( this also includes ATOVS etc.).
LAUNCHES.
NOAA N' launch.....February 2009.
Feng Yun 3 ....... uncertain.
Douglas Deans.....with thanks to Lawrence Harris for his regular updates
and
reports.
SECTION 3: CONTINENTAL GEOSTATIONARY WORLD
===========================================
WEATHER SATELLITE REPORT -- 21st January 2008
======================================
CHANGES SINCE LAST REPORT.
None.
THIS WEEK'S POSSIBLE EVENTS.
None expected.
Europe & Africa
------------------
Satellite : Meteosat 8 (3.5° W)
Data : HRIT (digital) and LRIT (digital)
Operational : No. 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 : Present.......
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 : HiRID and HRIT (digital) and
Wefax(analogue)/LRIT(digital) shared 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 to be discontinued on 12th March 2008. (Thanks to Dale
Hardy for information). It will be replaced with HRIT/LRIT (also
currently available).
7. Only LRIT (1691.0 MHz) is provided in direct readout.
Full HRIT and LRIT service from Eumetcast.
Any reports for this section should be sent to :-
Douglas Deans dsdeans@tiscali.co.uk
SECTION 4: EUMETCAST REPORT -- 21st January 2008
========================================
Service Status Hotbird Satellite (13° E)
EARS On Transponder 117: 10853.44 MHz
Meteosat 8 (RS) Off 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.
Metop-A Note updated.
IODC Note added.
THIS WEEK AND FUTURE POSSIBLE EVENTS.
General Note.
EUMETSAT plans to complete the validation of the MSG Level 1.5 image
product
radiance definition change by April 2008, and assuming successful, the
product will be made fully operational then.
For more information and a detailed schedule please see:
http://www.eumetsat.int/home/Main/Access_to_Data/index.htm?l=en
Two Meteosat-9 North-South orbit inclination manoeuvres followed by a spin
rate adjustment will be performed on 04 and 05/02/08 at 22:20 UTC and
22:05
UTC respectively.
Each one of the two manoeuvres may be followed by up to 24 hours of
degraded
quality of Meteosat-9 SEVIRI images and meteorological products .
The following new products from US data providers are now available on
EUMETCast:
NASA-SERVIR fire monitoring and forecast products for Mesoamerica,
See:http://www.eumetsat.int/products/indexer.html?page=1&search=&category=-
1&benefit=-1&provider=NASA+SERVIR¶meter=-1&coverage=-1&dissemination=-1
&status=-1&recent=false
US Environmental Protection Agency (EPA) pollution products for the USA,
See:http://www.eumetsat.int/products/indexer.html?page=1&search=&category=-
1&benefit=-1&provider=USEPA¶meter=-1&coverage=-1&dissemination=-1&statu
s=-1&recent=false
The products are available on the EUMETCast data channel Americas-CH1
(Europe and the Americas) and access is via registration with the User
Service Helpdesk on ops@eumetsat.int
On 21/01/08 at 09:00 UTC we will start parallel dissemination on
EUMETCast-Europe of Meteosat-9 image data, the current operational service
containing the existing "spectral" radiance definition and a parallel
validation service containing the new "effective" radiance definition.
For more information and a detailed schedule please see:
http://www.eumetsat.int/home/Main/Access_to_Data/index.htm?l=en
IODC.
Due to a Meteosat-7 East-West station keeping manoeuvre on 22/01/08 at
22:58
UTC, users may observe degraded image quality for up to 6 hours after the
manoeuvre.
Due to essential ground segment maintenance on 23/01/08, there will be no
IODC image data or IODC DCP data available between 08:30 and 12:30 UTC.
Metop-A.
An ASCAT extensive calibration campaign started on the 08-Dec-07. It is
currently foreseen to continue until the end of January 2008.
Short interruptions in ASCAT level 1b and level 2 data may occur on:
Day Orbit Time
21-Jan-08 6516 08:32:08
21-Jan-08 6522 18:13:17
22-Jan-08 6530 08:11:17
22-Jan-08 6537 19:32:39
23-Jan-08 6551 19:11:51
24-Jan-08 6558 07:30:05
25-Jan-08 6572 07:09:04
25-Jan-08 6579 18:30:26
26-Jan-08 6587 08:28:31
26-Jan-08 6593 18:09:44
27-Jan-08 6601 08:07:41
27-Jan-08 6608 19:29:07
A IASI external calibration on 23-Jan-08, between 05:15 and 09:10
nb. All times are in UTC.
The following EPS GDS products are available on Eumetcast. Some are now
classed as operational, some still on a trial basis.
EPS-2 Metop AMSA operational
EPS-3 Metop ASCAT trial
EPS-5 Metop GOME trial
EPS-6 Metop GRAS trial
EPS-7 Metop HIRS operational
EPS-8 Metop MHS operational
EPS-10 Metop AVHRR operational
EPS-11 Metop IASI operational
EPS-13 NOAA AMSA operational
EPS-15 NOAA GAC operational
EPS-16 NOAA HIRS operational
EPS-17 NOAA MHS 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
http://celestrak.com/NORAD/elements/
=====================
73's - Adrian, G4ROA @ GB7COV
Message timed: 07:00 on 21 Jan 2008
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