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 2011

Ship Name	Cruise No.	Observation Area	Start Date	End Date
Keifu Maru	1103	East of Honshu	09 Apr. 2011	24 Apr. 2011
Keifu Maru	1104	East of Honshu	28 Apr. 2011	16 May 2011
Keifu Maru	1105	East of Honshu	20 May 2011	29 May 2011
Keifu Maru	1106	East of Honshu	04 Jun. 2011	13 Jun. 2011
Ryofu Maru	1104	East of Honshu	09 Apr. 2011	19 Apr. 2011
Ryofu Maru	1105	East of Honshu	23 Apr. 2011	10 May 2011
Ryofu Maru	1106	East of Honshu	15 May 2011	31 May 2011

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.)