JMA began aircraft-based upper-air observation in February 2011 with support from Japan Ministry of Defense to clarify the three-dimensional distribution of greenhouse gases (GHGs) and related species.
The figure below displays results from observation over the northwest Pacific. This monitoring is conducted in one direction of round trips between Atsugi Air Base and Minamitorishima Island once a month. The aircraft routes are displayed by the red line (non-stop) and the blue lines (via Ioto Island) in the panel on the right. The latter route brings a large volume of data for the area around 25°N in particular.
Click a tab below to see observation results.
