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.

Summer of 2016

Ship Name	Cruise No.	Observation Area	Start Date	End Date
Keifu Maru	1606	South of Honshu and the East China Sea	18 Jun. 2016	23 Jul. 2016
Keifu Maru	1607	The western Pacific	30 Jul. 2016	12 Sep. 2016
Keifu Maru	1608	The western North Pacific	17 Sep. 2016	07 Oct. 2016
Ryofu Maru	1606	The western Pacific	03 Jul. 2016	24 Aug. 2016

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.)