Oceanographic and Marine Meteorological Observations by Research Vessels

Oceanographic and marine meteorological observations are conducted in the western North Pacific and in the seas adjacent to Japan by two JMA research vessels named Ryofu Maru and Keifu Maru. Background marine pollution and greenhouse gases are also observed. For details of the data provided on this website, please refer to Description and Format of Data.

Observation Data

Point to one of the seasons below to display all observation tracklines for the season. Clicking on the season shows a list of observation cruises for that period in the table on the right.

Winter Spring Summer Fall

Revision History

Pointing to a ship name displays its trackline in the figure on the left. Click on the ship name to view the station chart and observation data of the cruise.

Winter of 2015

Ship Name	Cruise No.	Observation Area	Start Date	End Date
Keifu Maru	1501	South of Honshu and the East China Sea	07 Jan. 2015	26 Jan. 2015
Keifu Maru	1502	The western North Pacific	02 Feb. 2015	06 Mar. 2015
Keifu Maru	1503	South of Honshu	12 Mar. 2015	26 Mar. 2015
Ryofu Maru	1501	The western North Pacific	10 Jan. 2015	23 Feb. 2015
Ryofu Maru	1502	East of Honshu	28 Feb. 2015	26 Mar. 2015

JMA Data Report of Oceanographic Observations Special Issue is preserved by the National Diet Library's Web Archiving Project (WARP). (Go to the WARP page.)