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 2015

Ship Name	Cruise No.	Observation Area	Start Date	End Date
Keifu Maru	1507	South of Honshu	01 Oct. 2015	14 Oct. 2015
Keifu Maru	1508	East of Honshu and the Sea of Japan	21 Oct. 2015	02 Dec. 2015
Keifu Maru	1509	South of Honshu	08 Dec. 2015	21 Dec. 2015
Ryofu Maru	1508	East of Honshu	27 Oct. 2015	08 Nov. 2015
Ryofu Maru	1509	South of Honshu and the East China Sea	15 Nov. 2015	16 Dec. 2015

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.)