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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

Year:     Please select a year and click the "Refresh" button.

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     

Trackline of ship

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 2008

Ship NameCruise No.Observation AreaStart DateEnd Date
Kofu Maru0806East of Honshu 24 Jun. 200826 Jul. 2008
Keifu Maru0806The western North Pacific 17 Jun. 200819 Aug. 2008
Chofu Maru0807The western North Pacific and the East China Sea 04 Jul. 200816 Sep. 2008
Ryofu Maru0806The western North Pacific 13 Jun. 200807 Jul. 2008
Ryofu Maru0809The western North Pacific 24 Sep. 200824 Oct. 2008
Seifu Maru0806The Sea of Japan and the East China Sea 13 Jun. 200830 Sep. 2008