Global GHGs Viewer

Greenhouse gases Observing SATellite "IBUKI" (GOSAT)

Characteristics of greenhouse gas observation utilizing a satellite

Monitoring the GreenHouse Gases (GHGs) from the space is very effective to globally understand the concentration of GHGs and where and how much they are emitted and absorbed are occurred on the earth. The Greenhouse Gases Observing Satellite "IBUKI" (GOSAT) is the world's first satellite to monitor the concentrations of carbon dioxide (CO2) and methane (CH4), the two major greenhouse gases, from space. GOSAT was launched successfully on January 23, 2009, and has been operating properly since then.

Through analyzing the GOSAT observational data, scientists will be able to ascertain the global distribution of CO2 and CH4, and how the sources and sinks of these gases vary with seasons, years, and locations. These new findings will enhance scientific understanding on the causes of global warming. Also, they will serve as fundamental information for improving climate change prediction and establishing sound plans for mitigating global warming.

In order to continually fulfill its role in the international community, Japan started developing "GOSAT-2," a successor of GOSAT in 2012, and launched in FY2018. To expansively take over the role of GOSAT which observes GHGs at multiple points all over the world with high accuracy, GOSAT-2 is designed with strengthened functions to find out the behavior of global GHGs with even higher accuracy and density and to enhance accuracy of measurement of gas emissions and sinks by region, such as the function to automatically detect and avoid clouds which interfere with measurement from space and the function to enable measurement of carbon monoxide (CO) concentrations to identify the concentrations of anthropogenic CO2 more accurately.

In oder to monitor GHGs from the space, other GHGs observation satellites than GOSAT series, such as OCO-2 by NASA and SCIAMACHY and TOROPOMY by ESA, have been also launched.  In 2016, the improvement of the measurement of the GHGs emission in each country by the satellite monitoring has been declared in the Intergovernmental Panel on Climate Change (IPCC) report, and it is expected that GOSAT and GOSAT-2 enhance to monitor the emissions.  

The GOSAT project is a joint effort of the Ministry of the Environment (MOE), the National Institute for Environmental Studies (NIES), and the Japan Aerospace Exploration Agency (JAXA).

Global GHGs Viewer (GGG Viewer)

GGG Viewer is designed to visualize and analyze the observed data by GOSAT and GOSAT-2. The operators can easily search and obtain the data through the interface of GOSAT Viewer and quickly understand short and long term events that have been incurred by greenhouse gases with the data observed by satellites.  

GGG Viewer Support Platform

OS: Windows 10, MacOS 10.10, 10.11
HDD: 500GB
Internet connection is necessary


  Import Data from File
  Download Data
  Define the region of interest from shapefile and KML file
  Display plots from the region of interest
  Export the statistics data to CSV format
    Convert L2 data to L3 data
  Display scatter plot between CO2 and CO in GOSAT-2 data
  Import and display 3D data
  Display help pages