Greenhouse Gases Observing Satellite-2

Greenhouse Gases Observing Satellite-2
Names	Ibuki-2
Mission type	Environmental
Operator	JAXA
COSPAR ID	2018-084B
SATCAT no.	43672
Website	www.satnavi.jaxa.jp/e/project/gosat2/
Mission duration	5 years (planned); Elapsed: 6 years, 29 days
Spacecraft properties
Manufacturer	Mitsubishi Electric
Launch mass	1,800 kilograms (4,000 lb)
Power	5000 W
Start of mission
Launch date	29 October 2018 04:08 UTC
Rocket	H-IIA F40
Launch site	Tanegashima, Yoshinobu 1
Contractor	Mitsubishi Heavy Industries
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Eccentricity	0.00106
Altitude	612.98 km
Inclination	97.84°
Period	98.1 minutes
Main Instrument
Wavelengths	0.75 – 0.77 μm / 1.56 – 1.69 μm / 1.92 – 2.38 μm / 5.6 – 8.4 μm / 8.4 – 14.3 μm (FTS-2)
Resolution	0.2 cm−1 (FTS-2)
Instruments
	TANSO-FTS-2 - Infrared Fourier Transform Spectrometer; TANSO-CAI-2 - Thermal and Near-Infrared Sensor

The Greenhouse Gases Observing Satellite-2 (GOSAT-2), also known as Ibuki-2 (Japanese: いぶき2号, Hepburn: Ibuki nigō), is an Earth observation satellite dedicated to greenhouse gas monitoring. It is a successor of Greenhouse Gases Observing Satellite (GOSAT). The GOSAT-2 was developed as a joint project of the Japan Aerospace Exploration Agency (JAXA), Ministry of the Environment, and the National Institute for Environmental Studies (NIES). It was launched on 29 October 2018 from the Tanegashima Space Center aboard the H-IIA rocket.^{[citation needed]}

Comparison to GOSAT

Major changes in comparison to the previous GOSAT are:^[4]

Improved measurement precision.
FTS-2 can also monitor carbon monoxide (CO) and nitrogen dioxide (NO₂).
FTS-2 can select cloud-free point automatically for observation.
While GOSAT's CAI was observing nadir view, GOSAT-2's CAI-2 observes forward (20 degree) and backward (20 degree) simultaneously.
CAI-2 can also monitor PM2.5 and black carbon.^[1]

As of November 2023^[update], GOSAT-GW, the successor of GOSAT-2 and GCOM-W "Shizuku", is under development for launch in JFY2024 on the last flight of the H-IIA launch vehicle.^[5]

^ ^a ^b ^c ^d "IBUKI-2（GOSAT-2）". JAXA. Retrieved 30 April 2021.
^ ^a ^b ^c ^d 地球観測データ利用ハンドブック（GOSAT-2／いぶき2号） (PDF) (in Japanese). JAXA. October 2020. Retrieved 1 May 2021.
^ "GOSAT-2 Project Site". National Institute of Environment Studies. Retrieved 30 April 2021.
^ "GOSAT-2 (Greenhouse gases Observing Satellite-2) / Ibuki-2". eoPortal. Retrieved 1 May 2021.
^ "GOSAT-GW" (in Japanese). JAXA. Retrieved 22 November 2023.