WEATHER SATELLITES
===============
POLAR APT, DIGITAL and GEOSTATIONARY WEEKLY STATUS.
==============================================

Author : Douglas S Deans.
E-mail : dsdeans@btinternet.com
Twitter : Douglas Deans @GM4VZY

Sections 2 and 4 have updates.

SECTION 1: POLAR APT/LRPT REPORT 14th April 2014.
==========================================
Satellite Frequency (MHz) Status Image Quality

NOAA 15 137.620 (APT) on good
NOAA 18 137.9125 (APT) on good
NOAA 19 137.100 (APT) on good but see Note 6
Metop-A 137.100 (LRPT) off see Note 2
Metop-B No LRPT service
Meteor M N1 137.100 (LRPT) sporadic see Note 6

CHANGES SINCE LAST REPORT.
None.

THIS WEEK'S POSSIBLE EVENTS.
None expected.

NOTES.
1. NOAA 16's APT transmission system failed a few months after launch.

2. 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).

3. NOAA 14 was decommissioned on 23rd May 2007.

4. NOAA 12 was decommissioned on 10th August 2007.

5. NOAA 17 was decommissioned on 10th April 2013.

6. Signals have been reported from Meteor M N1 but they are
sporadic with periods off. Although classed as LRPT it does not
conform to the CGMS standard.
During in-fill carrier phase this satellite can cause interference to
NOAA 19 when footprints overlap.

7. Elements are available from :-
http://www.space-track.org and
http://celestrak.com/NORAD/elements/

LAUNCHES.
None expected.

SECTION 2: POLAR HRPT/AHRPT REPORT 14th April 2014
============================================
CHANGES SINCE LAST REPORT.
Note 9 added for Feng Yun 1D

THIS WEEK'S POSSIBLE EVENTS.
None expected.

Satellite Frequency Antenna Mode Image Quality
(MHz)
NOAA 15 1702.5 Omni HRPT Weak
NOAA 16 1698.0 RHCP HRPT Good ( note 4)
NOAA 18 1707.0 RHCP HRPT Good
NOAA 19 1698.0 RHCP HRPT Good
Feng Yun 1D 1700.4 RHCP CHRPT See Note 9.
Feng Yun 3A 1704.5 see note 6.
Feng Yun 3B 1704.5 see note 6.
Feng Yun 3C Commissioning. No details available.
Metop-A 1701.3 RHCP AHRPT Good (note 5)
Metop-B 1701.3 RHCP AHRPT Good.
Meteor M N1 1700 See note 7.
NPP see Note 8.

NOTES.

1. NOAA 14 was decommissioned on 23rd June 2007.

2. NOAA 12 was decommissioned on 10th August 2007.

3. NOAA 17 was decommissioned on 10th April 2013.

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 31st March 2012 :- After a short period of poorer images,
with signs of judder, there have been improvements in the scan motor
performance. Please see :-
http://tech.groups.yahoo.com/group/weather-satellite-reports/message/2649

5. On 25 May 2009, Eumetsat extended the coverage of the Advanced High
Resolution Picture Transmission (AHRPT) system on Eumetsat's Metop-A
polar-orbiting satellite. The improved service provides additional
coverage over the Gulf of Mexico and Indian Ocean regions.
For more information, please see:
http://www.eumetsat.int/Home/Main/Media/Features/710601

6. Feng Yun 3A was declared operational on 12th January 2009.
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.
Update: The second in the series, Feng Yun 3B was launched on
4th November 2010. I expect the information above for 3A will
equally apply to 3B.
My thanks to Johnny Lin for drawing this to my attention.

7. It appears that Meteor M N1 is neither using full HRPT or AHRPT and
cannot be received using current receivers. Please see other WSR mails
for further explanation :-
http://tech.groups.yahoo.com/group/weather-satellite-reports/message/2098.
Continual sporadic problems with transmission.

8. As this weather satellite has no S-band transmitter, it is included for
information only.

9. I am grateful to Dr. T S Kelso for pointing out this satellite has been
off for over 2 years. My last report from the Chinese did indicate that
the radiometer had been switched off to preserve power but may be brought
on again. I now consider that unlikely and will remove the satellite
from the list (rather than showing 'off') in the coming weeks.

LAUNCHES.
None expected.

SECTION 3: GEOSTATIONARY REPORT 14th April 2014
==========================================
CHANGES SINCE LAST REPORT.
None.

THIS WEEK'S POSSIBLE EVENTS.
None expected.

Europe & Africa
------------------
Satellite : Meteosat 8 (3.5E)
Data : HRIT (digital) and LRIT (digital).
Operational : No. Standby. Note when operational
there is no direct readout LRIT.

Satellite : Meteosat 9 (9.5 E) (note 6).
Data : HRIT (digital) and LRIT (digital)
Operational : Yes (RSS).

Satellite : Meteosat 10 (0).
Data : HRIT (digital) and LRIT (digital).
Operational : Yes.

North America
----------------
East.
Satellite : GOES 13 (75 W).
Data: GVAR (digital) - 1685.7 MHz
LRIT (digital) - 1691 MHz
Operational: Yes.

West.
Satellite : GOES 15 (135W).
Data : GVAR (digital) - 1685.7 MHz
LRIT (digital) - 1691 MHz
Operational : Yes.

Satellite : GOES 14 (105W).
Data : GVAR (digital) - 1685.7 MHz
LRIT (digital) - 1691 MHz
Operational: Standby.

Asia (Russian Operated Satellite)
--------------------------------------

Satellite : ELECTRO-L (76 E)
Data : HRIT/LRIT.
Operational : No

Asia (European Operated Satellites)
----------------------------------------
Satellite : Meteosat 7 (57.5E)
HRI (digital) - 1691 MHz
Wefax (analogue) occasionally for ranging purposes
only.
Operational : Yes.

Asia (Indian Operated Satellite)
--------------------------------
Satellite : Metsat
Data : None available.
Operational : Yes.

Satellite : Insat 3A (Note 2.)
Data : VHRR (digital) 2599 MHz
Operational : Yes.

Satellite: Insat 3D
Data : HRIT/LRIT 4781 MHz
Sounder 4798 MHz.
Operational : No. Commissioning.

Asia (Korean Operated Satellite)
-----------------------------------
Satellite : COMS (128.2 E)
Data : HRIT (digital) and LRIT (digital)
Operational : Yes.

Asia & Oceania (Japanese Operated Satellites)
------------------------------------------------
Satellite : MTSAT-1R (140 E) (note 4.)
Data : HRIT (digital) - 1687.1 MHz.
LRIT(digital) - 1691 MHz.
(Note 5.)
Operational : No.

Satellite : MTSAT-2 (145 E).
Data : HRIT (digital) - 1687.1 MHz
LRIT(digital) - 1691 MHz.
Operational : Yes

Asia & Oceania (Chinese Operated Satellites)
----------------------------------------------------
Satellite : Feng Yun 2D (86.5E).
Data : SVISSR (digital) and LRIT (digital)
Operational : Yes.

Satellite: Feng Yun 2E (104 E).
Data : SVISSR (digital) and LRIT (digital)
Operational : Yes.

NOTES.

1. Meteosat 7 stopped its 0 service at 09.00 UTC on 14th June 2006.

2. Insat 3A is a combined data and meteorological satellite.

3. For those interested in EMWIN data, the following sats/frequencies apply.

GOES 15 (135 W) 1692.700 MHz
GOES 13 (75 W) 1692.700 MHz
For further info. there are many sources but the following is
particularly informative:-
http://iwin.nws.noaa.gov/emwin/user-intro.htm

4. This satellite is also known as HIMAWARI 6.

5. HiRID and WEFAX was discontinued on 12th March 2008. It was replaced
with HRIT/LRIT (after many months of dual dissemination).

6. Only LRIT (1691.0 MHz) is provided in direct readout.
Full HRIT and LRIT service from Eumetcast.

7. GOES-12 was decommissioned on 16th August 2013.

LAUNCHES.
Japans Himawari-8 launch due 2014 (follow on to MTSAT).

SECTION 4: EUMETCAST REPORT 14th April 2014
=====================================

Service Status Eurobird 9A Satellite (9 E)

EARS On Transponder TP63: 11976.82 MHz
Meteosat 8 Off Transponder TP63: 11976.82 MHz
Meteosat 9 On Transponder TP63: 11976.82 MHz
Meteosat 10 On Transponder TP63 11976.82 MHz
DWDSAT On Transponder TP63: 11976.82 MHz
EPS(Metop-A) On Transponder TP63: 11976.82 MHz
EPS(Metop-B) On Transponder TP63: 11976.82 MHz
Jason On Transponder TP63: 11976.82 MHz

CHANGES SINCE LAST REPORT.
Metop and NOAA Global Data Service Note updated.
Third-Party Data and Products Note updated.
Future Events Note updated.

THIS WEEK AND FUTURE POSSIBLE EVENTS.
GENERAL NOTE.
The EUMETCast Europe service will be upgraded from DVB-S to the DVB-S2
standard in August 2014.
For detailed information, please see:
http://www.eumetsat.int/website/home/TechnicalBulletins/EUMETCast/DAT_2082113.html

Meteosat Straylight.
During eclipse seasons,stray light affects the way the spacecraft instrument
is commanded. There are periods where the black body calibration is
performed after the instrument retrace instead of prior to it. This delays
files for the time of the calibration (approximately three minutes) which
then affects the data timeliness in the same way. This nominal calibration
activity during eclipse season will therefore cause periods of noticeable
delays to reception of data by Users.
Meteosat Straylight Predictions for Winter/Spring 2014 are available on
EUMETSAT Website:
www.eumetsat.int/Home/Main/ServiceStatus/index.htm?l=en
(See section "Straylight Predictions (XML)")

METOP AND NOAA GLOBAL DATA SERVICE.
15 April 2014.
GOME L1 Metop-A auxiliary file update to correct for a degradation in the
Stokes fraction correction quality.

20 April 2014 05:12 - 09:12 UTC.
Metop-B - IASI External Calibration.
IASI GDS Level 1C and Level 2 products will not be available.

Metop-A MHS Hardware failure.
Investigation into the anomaly has been progressing through on-board
diagnostic testing. The failure is believed to be most likely due to a
short-circuit of two independent heater switches. However, the testing has
demonstrated that it should be possible to reach an operational state in a
safe configuration through alteration of existing procedures on-ground,
possibly in combination with onboard software changes. The instrument
manufacturer is currently performing a detailed assessment of the failure
scenario, which is a prerequisite to the continuation of further diagnostic
testing.
MHS L1B and ATOVS L2 products are expected to remain unavailable for several
weeks.
Metop-B and NOAA-19 products are unaffected and will continue to be
available.

THIRD-PARTY DATA AND PRODUCTS.
From 31 March 2014 14:00 UTC and until further notice Data from Electro-L N1
are not available.

Oceansat-2.
Due to an irrecoverable OSCAT instrument failure, the following services are
now discontinued:
- OSCAT L2A ISRO product
- OSCAT L2B ISRO product
- OSCAT Winds at 50 km Swath Grid (provided through the OSI SAF)

FUTURE EVENTS.
Metop and NOAA Global Data Service.
29 April 2014.
Metop-B In-plane manoeuvre.
SEM and GOME data will be unavailable.
A temporary degradation of the quality of GRAS Level 1 products is to be
expected starting at the time of the manoeuvre.
All AMSU-A, ASCAT, ATOVS, AVHRR, HIRS, IASI and MHS products may have
temporarily degraded quality geo-location data after the time of the
manoeuvre.
Exact outage times to be announced closer to the day of the manoeuvre.

Third-Party Data and Products.
24 April 2014 (postponed from the initial date of 13 March 2014) Update to
SARAL BUFR products.
For more details and test data, please see:
http://www.eumetsat.int/website/home/News/DAT_2095904.html

The following EPS GDS products are available on Eumetcast.

EPS-2 PID 510 Metop AMSA operational
EPS-3 PID 510 Metop ASCAT 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-9 PID 510 Metop SEM operational
EPS-10 PID 510 Metop AVHRR operational
EPS-11 PID 510 Metop IASI operational
EPS-12 PID 510 Metop HKTM operational
EPS-13 PID 510 NOAA AMSA 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
EPS-19 PID 510 Test service operational
EPS-Africa PID 300 EPS Europe/Africa operational
EPS-Global PID 300 EPS Global data operational
(EPS-19 may sometimes be limited to Manufacturers)

NOTES.

1. Reports for all sections should be sent to :-
Douglas Deans. dsdeans@btinternet.com

2. For further information on the Eumetcast service see :-
David Taylor's web site : http://www.satsignal.eu
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/

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