Remote sensing, GIS

Researches are being conducted in CGER on global environmental issues regarding geographically wide regions using satellite observation and geographical information systems.

GOSAT Project (Greenhouse gases Observation SATellite)
Homepage of Greenhouse gases Observation SATellite (GOSAT) project promoted by Japan Aerospace Exploration Agency (JAXA), the Ministry of the Environment (MOE), and National Institute for Environmental Studies (NIES). In this project, two major greenhouse gases, carbon dioxide and methane, will be measured globally from space. After the launch of GOSAT in FY2008, GOSAT data will be available throgh this homepage.
ILAS / ILAS-II (Improved Limb Atmospheric Spectrometer)
This database contains the vertical profiles of minor atmospheric constituents such as ozone in the polar stratosphere observed by ILAS, a sensor that was installed onboard the ADEOS earth observation satellite. ILAS-II is the successor of ILAS. Observations were conducted in 1996-97 by ILAS and 2003 by ILAS-II.
Global Land Cover Maps
The spatial resolution of the global land cover is 30 arc degree in latitude and longitude, and datum of the map is WGS84. This global land cover map is created by integration of existing maps and ground truth data and improved the accuracy by decreasing the classification categories to 6.
Vegetation Monitoring in East Asia by Remote Sensing
A project on monitoring vegetation and land cover in East Asia region where various kinds of forests of tropical to sub-arctic climate zones exist using AVHRR sensors onboard US NOAA satellite series. Monthly vegetation index mosaics for the Asian region in 1996 and 1997 are being distributed via CD-ROMs and network. No future update is planned.
Global Drainage Basin Database
For resolving water-related issues which are recently being noticed globally, comprehensive researches in natural and social sciences from global to regional scales, as well as managements and countermeasures based on these researches are required. Global Drainage Basin Database was developed to support these researches. GIS files for Africa, Asia, Europe, Oceania, and North/South America and a users' guide can be downloaded from this site. No future update is planned.

The Collection of Data in CGER Report

Vegetation index distribution map in east Asia in 1997 [CGER Report]
A CD-ROM of monthly vegetation index map in east Asia in 1997. They were calculated from data observed by AVHRR onboard US NOAA satellites. Japanese only.
CGER Report, ISSN1341-4356, CGER-D023(CD)-2000
Vegetation index distribution map in east Asia in 1996 [CGER Report]
A CD-ROM of monthly vegetation index map in east Asia in 1996. They were calculated from data observed by AVHRR onboard US NOAA satellites. Japanese only.
CGER Report, ISSN1341-4356, CGER-D020(CD)-1998
Time Series of Phytoplankton Biomass Distribution over the Northwestern Pacific Area by Monthly Composite Images from Nimbus7-CZCS Data [CGER Report]
Monthly phytoplankton pigment images of northwest pacific ocean from November 1978 to June 1986 derived from CZCS data on US Nimbus-7 satellite are available via internet. The amount of phytoplankton pigment, water-leaving radiance at the 443 nm and 550 nm bands, aerosol radiance at the 670 nm band are available via CD-ROM.
CGER Report, ISSN1341-4356, CGER-D015(CD)-1997