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.

Fall of 2013

Ship Name	Cruise No.	Observation Area	Start Date	End Date
Keifu Maru	1307	The western North Pacific	06 Oct. 2013	22 Oct. 2013
Keifu Maru	1308	East of Honshu and the Sea of Japan	29 Oct. 2013	10 Dec. 2013
Keifu Maru	1309	South of Honshu	14 Dec. 2013	25 Dec. 2013
Ryofu Maru	1308	South of Honshu	27 Sep. 2013	07 Oct. 2013
Ryofu Maru	1309	East of Honshu	09 Nov. 2013	22 Nov. 2013
Ryofu Maru	1310	East of Honshu	28 Nov. 2013	23 Dec. 2013

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.)