Meteorological Satellite Center (MSC)

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MTSAT
Schedule for Equinox Season

Sun Interference(Sun Outage) in Spring 2013

The sun passes behind a satellite as seen from its ground station once a day during equinox season. When this happens, radiation from the sun can cause loss or degradation of communications between the satellite and the ground station. This kind of sun interference, it is called " Sun Outage", can degrade or interrupt their transmission.

The following observation is affected by sun outage (as of February 6, 2013):

  1. Observations are Cancelled.
    F03 : 4-8 March 2013
  2. Possibility of having line error or being halted.
    F03 : 1-3 March 2013, 9-10 March 2013

Equinox Operation in Spring 2013

Likewise, the sun and the earth can lie in an approximate line with a satellite during equinox season. When this happens, solar light entering the satellite's imager-sensor can adversely affect the sensor's calibration quality and cause deterioration of image data.

Observation time and area of the images affected by solar light are estimated as follows:

  • (1) Observations cancelled by cause of solar light on the imager(shown with "X (red box)" in the table below).
    N14 : 3-20 April 2013
    F15 : 8-19 April 2013
  • (2) Other than the observations above, parts of some images at F14, N14, F15 and N15 from February 14 until April 25, 2013 may cause partial degradation by solar light on the image (shown with "XXXXX (grey box)" in the table below).
Updated: 6 February 2013
Observation N13 F14 N14 F15 N15 F16
UTC 13:00-13:14 13:30-13:58 14:00-14:14 14:30-14:58 15:00-15:14 15:30-15:58
Feb. 13 O O O O O O
Feb. 14 O O O FSE13 O O
Feb. 15 O O O FSE13 O O
Feb. 16 O O O FSE13 O O
Feb. 17 O O O FSE13 O O
Feb. 18 O O O FSE13 O O
Feb. 19 O O O FSE13 O O
Feb. 20 O O O FSE13 O O
Feb. 21 O O O FSE13 O O
Feb. 22 O FSW05 O FSE13 O O
Feb. 23 O FSW05 O FSE13 O O
Feb. 24 O FSW05 O FSE13 O O
Feb. 25 O FSW05 O FSE12 O O
Feb. 26 O FSW05 O FSE12 O O
Feb. 27 O FSW05 O FSE12 O O
Feb. 28 O FSW05 O FSE12 O O
Mar. 1 O FSW05 O FSE12 O O
Mar. 2 O FSW05 O FSE12 O O
Mar. 3 O FSW05 O FSE13 O O
Mar. 4 O FSW05 O FSE13 O O
Mar. 5 O FSW05 O FSE13 O O
Mar. 6 O FSW05 O FSE13 0 O
Mar. 7 O FSW05 O FSE13 0 O
Mar. 8 O FSW05 O O O O
Mar. 9 O FSW05 O O O O
Mar. 10 O FSW04 O O HNE03 O
Mar. 11 O FSW04 O O HNE03 O
Mar. 12 O FSW04 O O HNE03 O
Mar. 13 O FSW04 O O HNE03 O
Mar. 14 O FSW04 O O HNE03 o
Mar. 15 O FSW04 O O HNE03 O
Mar. 16 O FSW04 O O HNE03 O
Mar. 17 O FSW04 O O HNE03 O
Mar. 18 O FSW04 O O HNE03 O
Mar. 19 O FCW03 O O HNE03 O
Mar. 20 O FCW03 O O HNE03 O
Mar. 21 O FCW03 O O HNE02 O
Mar. 22 O FCW03 O O HNE02 O
Mar. 23 O FCW03 O O HNE02 O
Mar. 24 O FCW03 O O HNE02 O
Mar. 25 O FCW03 O O HNE02 O
Mar. 26 O FCW03 O O HNE02 O
Mar. 27 O FCW03 O O HNE02 O
Mar. 28 O FCW03 O O HNE02 O
Mar. 29 O FCW03 O O HNE02 O
Mar. 30 O FNW02 O O HNE02 O
Mar. 31 O FNW02 O O HNE02 O
Apr. 1 O FNW02 O O HNE02 O
Apr. 2 O FNW01 O O HNE02 O
Apr. 3 O FNW01 X O HNE02 O
Apr. 4 O FNW01 X O HNE02 O
Apr. 5 O FNW01 X O HNE02 O
Apr. 6 O FNW01 X O HNE02 O
Apr. 7 O FNW01 X O HNE02 O
Apr. 8 O FNW01 X X HNE02 O
Apr. 9 O FNW01 X X HNE02 O
Apr. 10 O O X X HNE02 O
Apr. 11 O O X X O O
Apr. 12 O O X X O O
Apr. 13 O O X X O O
Apr. 14 O O X X O O
Apr. 15 O O X X O O
Apr. 16 O O X X O O
Apr. 17 O O X X O O
Apr. 18 O O X X O O
Apr. 19 O O X X O O
Apr. 20 O O X FNE09 O O
Apr. 21 O O HNW01 FNE09 O O
Apr. 22 O O HNW01 FNE09 O O
Apr. 23 O O HNW01 FNE09 O O
Apr. 24 O O HNW01 FNE09 O O
Apr. 25 O O O FNE09 O O
Apr. 26 O O O O O O
UTC 13:00-13:14 13:30-13:58 14:00-14:14 14:30-14:58 15:00-15:14 15:30-15:58
Observation N13 F14 N14 F15 N15 F16

Influence area of solar light


Full-disk
Full-disk
Hemisphere-disk
FNW01 solar light fig FSC08 solar light fig HNW01 solar light fig
FNW02 solar light fig FNE09 solar light fig HNE02 solar light fig
FCW03 solar light fig FSE10 solar light fig HNE03 solar light fig
FSW04 solar light fig FSE11 solar light fig

FSW05 solar light fig FSE12 solar light fig

FSW06 solar light fig FSE13 solar light fig

FSW07 solar light fig FCE14 solar light fig


Note
solar light fig
  • F : Full-disk observation
  • H : Hemisphere-disk observation
  • S : South side area
  • N : North side area
  • E : East side area
  • W : West side area
  • C : Center area
  • Number : fig Number

Reference