MISSIONS

Greenhouse gases Observing SATellite "IBUKI"(GOSAT)

In Operation

Project Topics


October 28, 2011 Updated

IBUKI observations help reduce estimation error of the CO2 absorption and emission

The Ministry of the Environment, the National Institute for Environmental Studies, and JAXA calculated the error or uncertainty of the estimation results for monthly global and regional CO2 absorptions and emissions using data acquired by the Greenhouse Gases Observing Satellite "IBUKI." As a result, we can reduce the error of the estimated values when we introduce IBUKI's observation data compared to that of the values calculated in a conventional way based on ground observation data.
This achievement will be published in the Scientific Online Letters on the Atmosphere (an online thesis magazine) issued by the Meteorological Society of Japan on Oct. 29. We will offer our estimate result data to researchers who are working on related fields that were selected through public solicitation. After being evaluated, compared and verified by researchers, we will further revise the data, if necessary, then publish the finalized data to the public.

Overview


print

"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.


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