BackForwardInstrument:  GHMS 

Instrument details
Acronym GHMS
Full name Geostationary Himawari Sounder
Purpose To provide information about the vertical distribution of atmospheric moisture, winds, and temperature to feed into forecast models.
Short description

Interferometer measuring in the thermal IR (680 - 1095 cm-1) and one mid IR band (1689 - 2250 cm-1). Both bands measured at high spectral resolution around 0.75 cm-1 or better with spectral sampling 0.625cm-1. More details to be added when available.
Background

First IR hyperspectral sounder covering East Asia and Western Pacific. Based on the Geo-XO sounder (GXS)
Scanning Technique
Resolution Less than 4.2km at ssp.
Coverage / Cycle Sounding disk (LZA<60 deg) every hour. Japan every 15 mins. Target area (1000x1000 km) every 15 mins.
Mass Power Data Rate

 

Providing Agency JMA
Instrument Maturity Flown on operational programme
Utilization Period: 2028 to 2045
Last update: 2025-01-27
Detailed characteristics
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Earth observation instrument
  • Passive optical radiometer or spectrometer
  • Cross-nadir infrared sounder, possibly including VIS channels
WIGOS Subcomponents
  • Subcomponent 1
  • IR hyperspectral sounders [in GEO]
  • IR hyperspectral sounder [in GEO]
Mission objectives
Primary mission objectives
  • Atmospheric temperature
  • Integrated Water Vapour (IWV)
  • Specific humidity
Evaluation of Measurements