The Hateruma Global Environment Monitoring Station is located at the southern end of Japan. The station was established in 1992 to monitor the long-term trends of greenhouse gases (GHGs) in Eastern Asia.

Hateruma Island, a small sub-tropical island and part of the Sakishima Islands, is located at more than 1000 km from mainland Japan. The wind is northerly to northeasterly in autumn-winter and southerly to southeasterly in spring-summer. The annual mean wind speed at the top of the tower (46.5 m above sea level) is about 8 m/s. The surface temperature is about 24ºC and the annual rainfall is about 1900 mm. Hourly measurements of halocarbons have been performed at Hateruma since 2004. A fully automated preconcentration/gas chromatograph/mass spectrometer system measures ~50 trace gases, including halocarbons.

Photos courtesy of NIES.

Hateruma Global Environment Monitoring Station

Latitude: 24° 3′ 38″ N
Longitude: 123° 48′ 33″ E
Time Zone: GMT +9 (Japan Standard Time)
Roofdeck elevation:  
Air intake elevation: 46.5 m above sea level
Station PI: Takuya Saito (saito.takuya@nies.go.jp)
Station Contact: Hitoshi Mukai (lnmukaih@nies.go.jp)
Postal address: Isehara 4794, Aza Hateruma, Taketomi, Yaeyama 907-1751, Okinawa
Related Links: Hateruma Station on the GAW Station Information System

Station Funding

The halocarbon observations are made as a part of the global environmental monitoring program by the Center for Global Environmental Research (CGER) at NIES.