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 2009

Ship Name	Cruise No.	Observation Area	Start Date	End Date
Kofu Maru	0904	East of Honshu	21 Apr. 2009	04 Jun. 2009
Keifu Maru	0904	The western North Pacific	22 Apr. 2009	12 May 2009
Chofu Maru	0905	The western North Pacific and the East China Sea	01 May 2009	15 Jun. 2009
Ryofu Maru	0904	The western North Pacific	23 Apr. 2009	13 May 2009
Seifu Maru	0904	The Sea of Japan	24 Apr. 2009	08 Jun. 2009

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.)