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.

Spring of 2014

Ship Name	Cruise No.	Observation Area	Start Date	End Date
Keifu Maru	1403	The western North Pacific and the East China Sea	10 Apr. 2014	05 May 2014
Keifu Maru	1404	The western North Pacific	12 May 2014	17 Jun. 2014
Ryofu Maru	1403	South of Honshu	10 Apr. 2014	24 Apr. 2014
Ryofu Maru	1404	East of Honshu	29 Apr. 2014	30 May 2014
Ryofu Maru	1405	The western North Pacific	09 Jun. 2014	29 Jun. 2014

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.)