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Description and format of data

Data Extension Period Format Last updated Information
Summary of cruise .SUM All Period format of data 24kB 16 May 2025 A summary of each cruise, including the period of cruise, equipment of a ship and other information related to the cruise.
Station information .STN Before winter of 2010 cruise format of data 44kB 5 September 2011 The date, time, location and other information of the observation stations in the cruise.
After spring of 2010 cruise format of data 96kB 16 May 2025
Hydrographic data .E Before winter of 2010 cruise format of data 45kB 29 January 2015 Data of water temperature, salinity, oxygen, nutrients and other materials in sampling layers. Water temperature and salinity at the standard depths are also included.
After spring of 2010 cruise format of data 48kB 16 May 2025
CTD and XCTD data .CTD .XCT Before winter of 2010 cruise format of data 65kB 10 September 2008 Data of water temperature, salinity and oxygen at every 1 dbar of depth by CTD (Conductivity Temperature Depth profiler) and/or XCTD (expendable CTD).
After spring of 2010 cruise format of data 40kB 16 May 2025
XBT-DBT data for standard depth .T All Period format of data 40kB 16 May 2025 Data of water temperature at the standard depths by XBT (expendable bathythermograph) and/or DBT (digital bathythermograph).
XBT-DBT data .BT Before winter of 2010 cruise format of data 38kB 1 September 2011 Data of water temperature at every 1m of depth by XBT (expendable bathythermog raph) and/or DBT (digital bathythermograph).
After spring of 2010 cruise format of data 40kB 16 May 2025
Water sample data .WAT Before winter of 2010 cruise format of data 44kB 29 January 2015 Data of oxygen, nutrients, total inorganic carbon and other materials in sampled water.
After spring of 2010 cruise format of data 104kB 16 May 2025
Subsurface current data .A All Period format of data 32kB 16 May 2025 Data of multi-layer subsurface current by acoustic current meter.
Greenhouse gas data .WAY All Period format of data 80kB 16 May 2025 Data of carbon dioxide and methane concentration in marine air and surface water.
Floating pollutant data .FLT All Period format of data 72kB 16 May 2025 Number of floating pollutants (e.g. plastic materials) by visual observation.
Tar ball data .TRB All Period format of data 72kB 16 May 2025 Data of floating tar balls.
Petroleum hydrocarbon and heavy metal data .OHM All Period format of data 19kB 5 August 2011 Data of petrolem hydrocarbon in surface water, and data of mercury and cadmium in sea water.
Maritime meteorological data IM2.TXT
IM3.TXT
Before 2011 cruise format of data 39kB 7 June 2011 Data of maritime meteorological observation (e.g. air temperature, wind speed and wind direction) by research vessels.
IM5.TXT After 2012 cruise format of data 104kB 2 July 2013
WMO code tables All Period format of data 86kB 7 May 2007 WMO code tables of maritime meteorological data.
Aerological data .AER All Period format of data 32kB 16 May 2025 Data of upper-air observation (e.g. air temperature, wind speed and wind direction) by radiosondes launched from reseach vessels of JMA
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