Japan's highest carbon dioxide concentration in observation history on March 25 at 4:25
The average concentration of carbon dioxide, one of the greenhouse gases that cause global warming, over the past year has been the highest in all stations in Japan.
The Japan Meteorological Agency has been monitoring CO2 concentration at three locations, Ayari Sanriku, Ofunato, Iwate, Yonagunijima in Okinawa, and Minamitorishima in the Ogasawara Islands, to monitor climate change.
The last year's average concentration was 414.8 ppm at Yonagunijima, 414 ppm at Ofunato City, and 412.2 ppm at Minamitorishima, both higher than the previous year and the highest in the history of observation.
Since the Japan Meteorological Agency started observing in Ofunato City in 1987, the carbon dioxide concentration in Japan has been renewing its record high every year.
In addition, both observations in the vicinity of 6 km above the southeast of Japan and observations at sea by boat have both reached record highs.
According to the Japan Meteorological Agency, "carbon dioxide has reached an unprecedented concentration. If no measures are taken, global warming may be further increased, and it is necessary to promote reduction efforts."