Satellites and Spacecraft Greenhouse gases Observing SATellite "IBUKI" (GOSAT)

In Operation

Project Topics

Nov. 16, 2015 Updated

Public release of whole-atmosphere monthly mean CO2 concentration based on observations by IBUKI

Public release of whole-atmosphere monthly mean CO2 concentration based on observations by IBUKI

"IBUKI" (GOSAT) has been in operation since its launch on January 23, 2009. The whole-atmosphere monthly mean concentration of carbon dioxide (CO2), calculated by using GOSAT data that reflect CO2 levels in all layers of the atmosphere, was found to have reached 398.8 ppm in May 2015, while showing seasonal oscillation and yearly rise over the analyzed period. It was also confirmed that the trend line of the whole-atmosphere CO2 mean (average seasonal cycle removed) had reached 398.2 ppm in Jul...

About Greenhouse gases Observing SATellite "IBUKI" (GOSAT)

"IBUKI": Global efforts to protect the environment.

Global warming has become a very serious issue for human beings. Scientists have suggested that, at the rate the Earth’s temperature is rising, an extreme form of global climate change could occur in a few centuries.
In 1997, the Kyoto Protocol was adopted at the Third Session of the Conference of the Parties to the United Nations Framework Convention on Climate Change (COP3), making it mandatory for developed nations to reduce carbon dioxide emissions by six to eight per cent of their total emissions in 1990, and to meet this goal sometime between 2008 and 2012.
Furthermore, the Global Climate Observation System (GCOS) has been proposed by the World Meteorological Organization (WMO) and the United Nations Environment Program (UNEP) in order to strengthen observations of land, ocean, and space conducted by each country.

Launch date: January 23, 2009

Characteristics of Greenhouse gases Observing SATellite "IBUKI" (GOSAT)

Monitoring the distribution of the density of carbon dioxide, a Greenhouse gas.

So far, the number of ground-based carbon dioxide observation points has been limited, and they have been distributed unequally throughout the world. "IBUKI" will enable the precise monitoring of the density of carbon dioxide by combining global observation data sent from space with data obtained on land, and with simulation models.
In addition, observation of methane, another Greenhouse gas, has been considered.

Major Characteristics

International Designation Code 2009-002A
Launch Date 12:54, January 23, 2009 (JST)
Launch Vehicle H-IIA Launch Vehicle No.15
Location Tanegashima Space Center
Shape 2 box shape with wing-type solar array paddles
3.7 m x 1.8 m X 2.0 m (Depth)
(Length between the tips of the paddles: 13.7 m)
Weight Approx. 1,750kg
Orbiter Sun-Synchronous Sub-Recurrent
Altitude Approx. 667km
Inclination Approx. 98 degrees
Period Approx. 98 minutes