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G4ROA > WXSAT 27.04.09 20:27l 399 Lines 13569 Bytes #999 (0) @ WW
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Subj: WX Sat Status report 27/4
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Sent: 090427/1907Z @:GB7COV.#29.GBR.EU #:61361 [Coventry] $:441274G4ROA
From: G4ROA@GB7COV.#29.GBR.EU
To : WXSAT@WW
WEATHER SATELLITES
================
POLAR APT, DIGITAL and GEOSTATIONARY WEEKLY STATUS.
===============================================
Author : Douglas S Deans. dsdeans@tiscali.co.uk
Sections 2, 3 and 4 have updates.
SECTION 1: POLAR APT/LRPT REPORT -- 27th April 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.
None.
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.
10/04/09 - Report of interference on NOAA 15 signal over east coast of
America (probably from NOAA 9). 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 -- 27th April 2009
============================================
CHANGES SINCE LAST REPORT.
Please note that I received a very late report advising that FY1D
has no carrier, no modulation and no images.
I have not been able to have this confirmed as yet.
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 Good
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.
LAUNCHES.
None due.
SECTION 3: CONTINENTAL GEOSTATIONARY WORLD
===========================================
WEATHER SATELLITE REPORT -- 27th April 2009
====================================
CHANGES SINCE LAST REPORT.
Meteosat 9 back as operational satellite.
Meteosat 8 has resumed the RSS.
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 delayed from 28th April until mid May at the
earliest.
SECTION 4: EUMETCAST REPORT -- 27th April 2009
======================================
Service Status Eurobird 9A Satellite (9° E)
EARS On Transponder TP63: 11976.82 MHz
Meteosat 8 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.
Meteosat 8 RSS Note added.
Metop Note updated.
THIS WEEK AND FUTURE POSSIBLE EVENTS.
Meteosat 8 RSS.
Due to a Meteosat-8 East-West station keeping manoeuvre on 28/04/09 at
06:43:00 UTC, Users may experience degraded image quality following the
manoeuvre for up to 3 hours.
Users may experience degraded meteorological product quality following the
manoeuvre for up to 3 hours.
FUTURE EVENTS.
On 07/05/09, EUMETSAT will combine the LEO and Meteosat Operations Weekly
Schedules into one generic Operations Weekly Schedule. The common
Operations Weekly 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 Operations
Weekly
Schedule.
FSD.
GOES11_135W eclipse from 09/02/09 to 28/04/09: 09:00 UTC and 10:00 UTC
files
may not be available.
GOES12_75W eclipse from 14/02/09 to 28/04/09: 05:00 UTC and 06:00 UTC
files
may not be available.
Metop-A.
EPS
27/04/2009 ASCAT Gain compression. Interruptions may occur at:
09:20 orbit 13080
01/05/2009 IASI External Calibration activities are foreseen between 05:12
and 09:10.
Earth views may not be available during this period.
30/04/2009: 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).
EARS
Tues 28/05/09 - Fri 01/05/09 ASCAT L2: high risk period due to
maintenance.
PAST EVENTS
From 21 April 2009, the GRAS-SAF started to disseminate Near-Real-Time
refractivity
products through EUMETCast. The first available product, the GRM-01 is
generated for
every occultation in BUFR format. EUMETCast requirements:
Channel "SAF-Europe" (PID 500, multicast address 224.223.222.28:3011).
The filenames start with "S-GRM_-GRAS_RO_L12" with full details in the
Product User
Manual, see: http://garf.grassaf.org/
For further information the on the GRAS-SAF products see:
http://www.eumetsat.int/Home/Main/Media/Features/710267
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: 19:03 on 27 Apr 2009
Message sent using WinPack V6.70 (R)
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Member of:
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QTH Loc - IO92gj
NGR SP 342 765
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E-Mail: G4ROA@AOL.com
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