ページの先頭です。
本文へジャンプする。
ここからサイト内共通メニューです。
サイト内共通メニューを読み飛ばす。
サイト内共通メニューここまで。
ここから本文です。
  • HOME
  • IBUKI-2(GOSAT-2)

Earth Observation Satellites

Greenhouse gases Observing SATellite-2
IBUKI-2(GOSAT-2)
prime contractor: Mitsubishi Electric Corporation

mission

The Greenhouse gases Observing SATellite-2 "IBUKI-2" (GOSAT-2) had been co-developed by three organizations: Japan Aerospace Exploration Agency, Japanese Ministry of the Environment and the National Institute for Environmental Studies, as the successor to GOSAT. Mitsubishi Electric Corporation had been in charge of satellite development as a prime contractor.

more details

Internationally acknowledged greenhouse gasses monitoring from the space

The Kyoto Protocol adopted in 1997 requests all developed countries to reduce greenhouse gases emission and to report regularly the amount of their emissions as well as absorption by forests.
In situ observation of greenhouse gasses on the ground has limitation that many areas are left blank without sufficient observation data due to limited number of the ground observation stations, and that only observation data close to observation points can be acquired though it is highly accurate. On the other hand, satellite observation from top of the atmosphere enables global and comprehensive understanding of greenhouse gasses distribution from their emission sources.
Whole achievements of GOSAT for over 10 years since its launch lead to the global acknowledgement on efficiency of the greenhouse gasses observation from the space.
The usability and roles of satellite observation data as a verification tool of greenhouse gasses inventories were stated for the first time in "2019 Refinement to the 2006 IPCC Guidelines on National Greenhouse Gas Inventories", which was agreed in Intergovernmental Panel on Climate Change, IPCC, held in Kyoto in May 2019.

GOSAT-2 improvement

GOSAT and GOSAT-2 are only satellites in the world that can observe both absorption of solar reflection from the earth's surface by the atmosphere and thermal radiation from the atmosphere from the space with its onboard spectrometers with the world highest spectral resolution. Leveraging these unique features, GOSAT and GOSAT-2 have been acquiring data on concentrations of carbon dioxide (CO2) and methane (CH4), which are the major greenhouse gasses, with their regional differences, seasonal variations and annual increase in upper and lower troposphere.
GOSAT-2 not only improves in observation accuracy but is equipped with enhanced function that can set the observation points on the ground according to target area to understand emissions and absorptions more accurately.
This function enables highly precise observation of large-scale greenhouse gas emission sources induced by human activities such as power plants, mega cities, oilfields, natural gas fields, landfills and livestock areas.
Besides, GOSAT-2 observes carbon monoxide (CO), which is not included in GOSAT observation target, that is attributable to combustion so that to contribute to environmental administration with CO2 emission source determination.

GOSAT-2 major characteristics

image:GOSAT-2 major characteristics

Thermal And Near Infrared Sensor for carbon Observation
- Fourier Transform Spectrometer-2 (TANSO-FTS-2)

TANSO FTS-2 onboard GOSAT-2 is a Fourier interference spectrometer which has observation bands from short wavelength infrared to thermal infrared wavelength to observe greenhouse gasses such as CO2 and CH4. Compared to GOSAT, GOSAT-2 enhances its effective wavelength range to additionally observe CO. Also, the "Intelligent pointing" function is added with an aim to allow GOSAT-2 to automatically avoid cloud, thus increasing valid observation data.

Thermal And Near Infrared Sensor for carbon Observation
- Cloud and Aerosol Imager-2 (TANSO-CAI-2)

TANSO-CAI-2 is a multiband imager which has observation bands from ultraviolet to near-infrared to observe clouds and aerosols. As accurate greenhouse gasses observations by TANSO-FTS-2 are obstructed by clouds, observation data with clouds will be screened utilizing ones of TANSO-CAI-2. It is expected that TANSO-CAI-2 contributes to monitoring of PM2.5 and black carbon that are increasing concern as a possible cause of health problems.

specification

About IBUKI-2 (GOSAT-2) specification & launch date

Items GOSAT-2(IBUKI-2) GOSAT(IBUKI)
Onboard instruments Thermal And Near Infrared Sensor for carbon Observation - Fourier Transform Spectrometer-2
(TANSO-FTS-2)

Thermal And Near Infrared Sensor for carbon Observation - Cloud and Aerosol Imager-2
(TANSO-CAI-2)
Thermal And Near Infrared Sensor for carbon Observation - Fourier Transform Spectrometer
(TANSO-FTS)

Thermal And Near Infrared Sensor for carbon Observation - Cloud and Aerosol Imager
(ANSO-CAI)
Satelite Size
(with paddles open)
5.8m(X)× 2.0m(Y)× 2.1m(Z)
(16.5m(Y))
2.4m(X)× 2.6m(Y)× 3.7m(Z)
(13.7m(Y))
Weight 1,800kg 1,750kg
Generated power(EOL) 5,000W 3,770W
Design life 5years 5years
Altitude Orbit type Sun-synchronous,sub-recurrent orbit Sun-synchronous,sub-recurrent orbit
Orbit altitude 613km 666km
Local time on descending node 13:00±15min. 13:00±15min.
Revisit time 6days 3days
Launch Date October 29 (Mon.), 2018 January 23 (Fri.), 2009
Launch Vehicle H-IIA Launch Vehicle No.40 H-IIA Launch Vehicle No.15
  • HOME
  • IBUKI-2(GOSAT-2)
本文ここまで。
PAGE TOP