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Mitsubishi Electric Begins Developing the GOSAT-GW Satellite forGreenhouse Gases and Water Cycle Observation
Will contribute to scientific advancement in prevention of natural disasters due to climate changeTOKYO, March 30, 2020 – Mitsubishi Electric Corporation (TOKYO: 6503) announced today that it has
been designated by the Japan Aerospace Exploration Agency (JAXA) as the contractor of the Global
Observing SATellite for Greenhouse gases and Water cycle (GOSAT-GW), the third in the GOSAT series, andhas already initiated development activities. GOSAT-GW will have two missions: greenhouse gases
observation for Japan’s Ministry of the Environment and the National Institute for Environmental Studies(NIES), and water-cycle observation for JAXA. By developing the GOSAT-GW satellite, Mitsubishi Electric
will contribute to measures for preventing disasters attributed to global warming and climate change, and toadvance scientific and technological methods that enable more accurate prediction of climate change.

Artist’s rendition of GOSAT-GW in orbit

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Key Features
1) New sensor for global, accurate observation of greenhouse gas concentration
GOSAT-GW will be equipped with a sensor, named Total Anthropogenic and Natural emissions mapping
SpectrOmeter-3 (TANSO-3), for observing concentrations of greenhouse gases, such as carbon dioxideand methane, over a wide area and with high precision for improved estimation accuracy of greenhousegas emissions. The global observation mode of TANSO-3 will cover large areas of Earth’s surface without
discontinuity, thus enabling more observation points than with previous models. TANSO-3 also will havea detailed observation mode with a spatial resolution three times higher than that of its predecessor,
GOSAT-2 (“Ibuki-2”), enabling greenhouse gases to be observed with higher accuracy.

2) Enhanced geophysical quantity observation for improved water cycle and meteorological monitoring
GOSAT-GW will also be equipped with the newly developed Advanced Microwave Scanning Radiometer
3 (AMSR3), which will estimate geophysical quantity of earth’s water on land, sea-surface and in theatmosphere. AMSR3 will use an increased number of frequency bands compared to its predecessors formore accurate estimation of hydro-geophysical conditions, such as precipitation, water vapor, sea ice andsea-surface temperatures. Data obtained from observations will improve the accuracy of forecasting
typhoons, torrential rains and other climatic conditions by meteorological organizations around the world.
In addition, by providing detailed data for assessing the effects that climate change has on the water cycle,
GOSAT-GW will contribute to efforts to measure the impact climate change has on everyday life andprepare necessary countermeasures.
GOSAT-GW Overview
Launch Date

Scheduled in Japanese fiscal year beginning April 1, 2023

Orbit TypeSun-synchronous sub-recurrent orbit

WeightApprox. 2,600kg

Mission Duration

7 years

Mission Objectives- Support disaster prevention through greenhouse-gas and water-cycle observations- Enhance scientific prediction of global warming and climate change

About GOSATGOSAT-GW is a joint project administered by Japan’s Ministry of the Environment, NIES and JAXA tomonitor concentrations of greenhouse gases, such as carbon dioxide and methane and water cycle from space
to build more efficient measures for countering global warming. GOSAT-GW is the third and latest satellite inthe GOSAT project; the first being GOSAT (“Ibuki”) and the second GOSAT-2 (“Ibuki-2”), which werelaunched in 2009 and 2018, respectively. GOSAT was launched as the world’s first satellite dedicated to theobservation of greenhouse gases on a global level. By covering the earth’s entire surface with its sensors,GOSAT provided data for use not only in Japan but also by many international organizations in the worldwide

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effort to counter global warming.
Mitsubishi Electric, having manufactured GOSAT, GOSAT-2 and AMSRs onboard other satellites, will use its
extensive experience with these proven endeavors to develop GOSAT-GW and further advance earthobservation technologies. As expressed in the company’s Eco Changes environmental statement andEnvironmental Sustainability Vision 2050, Mitsubishi Electric is committed to scientific development aimed atimproving climate-change prediction and global-warming prevention.

###About Mitsubishi Electric Corporation
With nearly 100 years of experience in providing reliable, high-quality products, Mitsubishi Electric
Corporation (TOKYO: 6503) is a recognized world leader in the manufacture, marketing and sales of electricaland electronic equipment used in information processing and communications, space development and satellite
communications, consumer electronics, industrial technology, energy, transportation and building equipment.
Embracing the spirit of its corporate statement, Changes for the Better, and its environmental statement, EcoChanges, Mitsubishi Electric endeavors to be a global, leading green company, enriching society withtechnology. The company recorded a revenue of 4,519.9 billion yen (US$ 40.7 billion*) in the fiscal year
ended March 31, 2019. For more information visit:
www.MitsubishiElectric.com*At an exchange rate of 111 yen to the US dollar, the rate given by the Tokyo Foreign Exchange Market on
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