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WEATHER SATELLITES
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POLAR APT, DIGITAL and GEOSTATIONARY WEEKLY STATUS.
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Author : Douglas S Deans
E-mail : dsdeans@btinternet.com
Twitter : Douglas Deans @GM4VZY
No updates.
SECTION 1: POLAR APT/LRPT REPORT – 12th June 2017.
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CHANGES SINCE LAST REPORT.
None.
THIS WEEK'S POSSIBLE EVENTS.
None expected.
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
Metop-A 137.100 (LRPT) off see Note 1
Metop-B No LRPT service
Meteor M N1 137.100 (LRPT) off poor (see Note 6)
Meteor M N2 137.900 (LRPT) on good (occasional loss of imagery)
NOTES.
1. 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).
2. NOAA 14 was decommissioned on 23rd May 2007.
3. NOAA 12 was decommissioned on 10th August 2007.
4. NOAA 17 was decommissioned on 10th April 2013.
5. NOAA 16 was decommissioned on 9th June 2014.
6. Surprisingly after losing contact with the satellite during September
2014, Meteor M N1 has sprung back to life.
LRPT is active although the quality of the images I have seen are
variable with bad scan lines. Stabilisation is out of control and images
have no scientific value.
Since 21st March 2016 satellite off.
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 – 12th June 2017.
==========================================
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 18 1707.0 RHCP HRPT Good
NOAA 19 1698.0 RHCP HRPT Good
Feng Yun 3A 1704.5 RHCP see note 6.
Feng Yun 3B 1704.5 RHCP see note 6.
Feng Yun 3C 1701.3 RHCP see note 9.
Metop-A 1701.3 RHCP AHRPT Good (note 5)
Metop-B 1701.3 RHCP AHRPT Good.
Meteor M N1 1700.0 See Note 7 for Meteor M N2.
Meteor M N2 1700.0 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. NOAA 16 was decommissioned on 9th June 2014.
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 N2 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.
8. As this weather satellite has no S-band transmitter, it is included for
information only.
9. I am grateful to David Wright of Dartcom (http://www.dartcom.co.uk) for
providing up to date information for Feng Yun 3C.
Now fully operational but the Chinese have changed the data rate compared
to FY-3A and B FY-3C DB downlink data rate is 3.9 Mbps after RS
Encoding.
Frequency is also different - it is on 1701.3 MHz same frequency as Metop
A/B. It still requires a special AHRPT receiver like FY-3A/B. They have
also changed the polarisation of the X-Band downlink to LHCP.
11th July 2015.
I am grateful to Nigel Atkinson of the UK Met Office advising me that
the L-band direct broadcast transmission of FY-3C was re-started on 11th
July and has been running OK since then
CMA now also confirm that FY-3C observational service has been partially
restored.
LAUNCHES.
JPSS-1 (NOAA 20 after commissioning) now reset for 21st September 2017.
SECTION 3: GEOSTATIONARY REPORT – 12th June 2017.
========================================
CHANGES SINCE LAST REPORT.
None.
THIS WEEK'S POSSIBLE EVENTS.
None expected.
Europe & Africa
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Satellite : Meteosat 9 (9.5° E) (note 6).
Data : HRIT (digital) and LRIT (digital)
Operational : No. Full earth scanning and maintenance.
Satellite : Meteosat 10 (0°).
Data : HRIT (digital) and LRIT (digital)
Operational : Yes.
Satellite : MSG-4 (Meteosat 11 after commissioning). (3.4°W).
Data : HRIT (digital) and LRIT (digital).
Operational : No. In orbit storage.
North America
----------------
East.
Satellite : GOES 13 (75° W).
Data: GVAR (digital) - 1685.7 MHz
LRIT (digital) - 1691 MHz
Operational: Yes.
West.
Satellite : GOES 15 (135°W).
Data : GVAR (digital) - 1685.7 MHz
LRIT (digital) - 1691 MHz
Operational : Yes.
Satellite : GOES 14 (105°W).
Data : GVAR (digital) - 1685.7 MHz
LRIT (digital) - 1691 MHz
Operational: Standby.
Satellite : GOES 16.
In geostationary orbit.
Commissioning for a year.
Asia (Russian Operated Satellite)
--------------------------------------
Satellite : ELECTRO-L (14.5°W)
Data : HRIT/LRIT.
Operational : No
Satellite : ELECTRO-L2 (78° E)
Data : HRIT/LRIT.
Operational : Yes.
Asia (European Operated Satellites)
----------------------------------------
Satellite : Meteosat 8 (41.5°E).
Data : HRIT (digital) and LRIT (digital).
Operational : Yes. Operating IODC.
There is no direct readout LRIT.
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)
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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
Satellite : Himawari 8 (140° E).
Data : No direct dissemination.
Satellite downlink only on
18.1 - 18.4 GHz (raw).
Data only available via HimawariCast service.
Operational : Yes.
Asia & Oceania (Chinese Operated Satellites)
----------------------------------------------------
Satellite : Feng Yun 2D (86.5°E).
Data : SVISSR (digital) and LRIT (digital)
Operational : Yes.
Satellite: Feng Yun 2E (104° E)
Data : SVISSR (digital) and LRIT (digital)
Operational : Yes.
Satellite: Feng Yun 2F (112.5° E).
Data: SVISSR (digital) and LRIT (digital).
Operational: Standby but used for regional scanning.
Satellite: Feng Yun 2G
Data: SVISSR (digital) and LRIT (digital).
Operational: commissioned.
Satellite: Feng Yun 4A (86.5°E).
Data: HRIT (digital) and LRIT (digital).
Operational : Commissioning.
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.
None.
NOTES.
1. Reports for all sections should be sent to :-
Douglas Deans. dsdeans@btinternet.com
GENERAL
=======
For further weather satellite related information join GEO, Group for Earth
Observation. 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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