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 2012

Ship Name	Cruise No.	Observation Area	Start Date	End Date
Keifu Maru	1205	East of Honshu	02 Jun. 2012	14 Jun. 2012
Keifu Maru	1206	The western Pacific	19 Jun. 2012	20 Aug. 2012
Keifu Maru	1207	The western North Pacific and the East China Sea	26 Aug. 2012	14 Sep. 2012
Ryofu Maru	1205	The western North Pacific	02 Jun. 2012	17 Jul. 2012
Ryofu Maru	1206	The western North Pacific	26 Jul. 2012	13 Sep. 2012

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.)