Measurements of d13C in DIC were compiled mainly from WOCE and CLIVAR cruises. The dataset also contains other physical and biogeochemical variables.

This dataset contains mapped observation-based oceanic dissolved inorganic carbon (DIC), monthly climatology from January to December (based on observations between 2004 and 2017), from the Max-Planck-Institute for Meteorology (MOBO-DIC_MPIM). The SOM-FFN approach by Landschützer et al. (2013) was extended and applied to obtain time-varying gap-filled mapped fields of dissolved inorganic carbon (DIC) in the water column. In the SOM-FFN approach, the first step is to cluster the ocean into regions of similar physical and biogeochemical properties using self-organizing maps (SOM). In the second step, a feed-forward network (FFN) is run in each SOM-cluster to approximate and apply the statistical relationship between the target data (here: DIC), and better constrained predictor data that are available as mapped global fields. The SOM-FFN method was adjusted and in several ways compared to the original method by Landschützer et al. (2013), that mapped oceanic surface pCO2. As we map the DIC in the water column, we extended the mapping grid from three dimensions (latitude, longitude, and time), to four (latitude, longitude, time, and depth), and instead of monthly inter-annual fields, we resolved a monthly climatology based on the period from 2004 through 2017. As different predictors are available and/or meaningful when mapping DIC in the water column, we also have a different set of predictor data compared to the approach used by Landschützer et al. (2013). To overcome potential biases in the random selection of training and internal validation data, a bootstrapping approach was used, running the SOM-FFN method ten times. The mean across this ensemble was taken as the final DIC field. We defined the standard deviation across the ensemble as the uncertainty within the method, and name it ensemble spread.

This dataset includes chemical, discrete sample, physical and profile data collected from MIRAI in the North Pacific Ocean and South Pacific Ocean from 1999-10-13 to 1999-11-20 and retrieved during cruise MR99-K06 and PACIFICA_49NZ19991013. These data include DISSOLVED INORGANIC CARBON, HYDROSTATIC PRESSURE, Potential temperature (theta), SALINITY and WATER TEMPERATURE. The instruments used to collect these data include CTD, Coulometer for DIC measurement and bottle. These data were collected by Kentaro Ando of Japan Agency for Marine-Earth Science and Technology (JAMSTEC) and Masao Ishii of Meteorological Research Institute as part of the PACIFICA_49NZ19991013 dataset. PACIFICA (PACIFic ocean Interior CArbon) was an international collaborative project for the data synthesis of ocean interior carbon and its related parameters in the Pacific Ocean. The North Pacific Marine Science Organization (PICES), Section of Carbon and Climate (S-CC) supported the project.

This dataset includes biological, chemical, discrete sample, optical, physical and profile data collected from MIRAI in the North Pacific Ocean and South Pacific Ocean from 1999-11-21 to 1999-12-27. These data include AMMONIUM (NH4), CHLOROPHYLL, Chlorophyll a, DISSOLVED INORGANIC CARBON (DIC), DISSOLVED OXYGEN, FLUORESCENCE, HYDROSTATIC PRESSURE, NITRATE, NITRITE, PHAEOPHYTIN, Potential temperature (theta), SALINITY, SIGMA-T, WATER TEMPERATURE, pH, phosphate and silicate. The instruments used to collect these data include CTD, Coulometer for DIC measurement and bottle. These data were collected by Takeshi Kawano of Japan Agency for Marine-Earth Science and Technology (JAMSTEC) and Masao Ishii of Meteorological Research Institute as part of the PACIFICA_49NZ19991121 dataset. CDIAC associated the following cruise ID(s) with this dataset: MR98-K07 and PACIFICA_49NZ19991121 PACIFICA (PACIFic ocean Interior CArbon) was an international collaborative project for the data synthesis of ocean interior carbon and its related parameters in the Pacific Ocean. The North Pacific Marine Science Organization (PICES), Section of Carbon and Climate (S-CC) supported the project.

This dataset includes chemical, discrete sample, physical and profile data collected from MIRAI in the North Pacific Ocean and South Pacific Ocean from 2002-12-17 to 2003-02-14 and retrieved during cruise MR02-K06 Leg 2-4 and PACIFICA_49NZ20021217. These data include DISSOLVED INORGANIC CARBON, DISSOLVED OXYGEN, HYDROSTATIC PRESSURE, NITRATE, NITRITE, PHOSPHATE, Potential temperature (theta), SALINITY, SILICATE, WATER TEMPERATURE and pH. The instruments used to collect these data include CTD, Coulometer for DIC measurement and bottle. These data were collected by Kazuhiko Matsumoto and Kentaro Ando of Japan Agency for Marine-Earth Science and Technology (JAMSTEC) and Masao Ishii of Meteorological Research Institute as part of the PACIFICA_49NZ20021217 dataset. PACIFICA (PACIFic ocean Interior CArbon) was an international collaborative project for the data synthesis of ocean interior carbon and its related parameters in the Pacific Ocean. The North Pacific Marine Science Organization (PICES), Section of Carbon and Climate (S-CC) supported the project.

This dataset includes discrete sample and profile data collected from POLARSTERN in the South Atlantic Ocean and Southern Oceans (> 60 degrees South) from 2005-01-22 to 2005-04-06. These data include Barium, DISSOLVED INORGANIC CARBON (DIC), DISSOLVED OXYGEN, HYDROSTATIC PRESSURE, NITRATE, NITRITE, Potential temperature (theta), SALINITY, WATER TEMPERATURE, phosphate and silicate. The instruments used to collect these data include CTD, Coulometer for DIC measurement and bottle. These data were collected by Eberhard Fahrbach and Mario Hoppema of Alfred Wegener Institute for Polar and Marine Research (AWI) as part of the CLIVAR_A12_ANT_XXII/3 dataset. CDIAC associated the following cruise ID(s) with this dataset: ANT_XXII/3 The International CLIVAR Global Ocean Carbon and Repeat Hydrography Program carries out a systematic and global re-occupation of select WOCE/JGOFS hydrographic sections to quantify changes in storage and transport of heat, fresh water, carbon dioxide (CO2), and related parameters.

This dataset includes chemical, discrete sample, physical and profile data collected from MIRAI in the North Pacific Ocean from 2005-09-13 to 2005-10-27 and retrieved during cruise MR05-04 and PACIFICA_49NZ20050913. These data include ALKALINITY, AMMONIUM, DISSOLVED INORGANIC CARBON, DISSOLVED OXYGEN, HYDROSTATIC PRESSURE, NITRATE, NITRITE, PHOSPHATE, SALINITY, SILICATE, WATER TEMPERATURE and pH. The instruments used to collect these data include CTD, Coulometer for DIC measurement and bottle. These data were collected by Makio Honda of Japan Agency for Marine-Earth Science and Technology (JAMSTEC) as part of the PACIFICA_49NZ20050913 dataset. PACIFICA (PACIFic ocean Interior CArbon) was an international collaborative project for the data synthesis of ocean interior carbon and its related parameters in the Pacific Ocean. The North Pacific Marine Science Organization (PICES), Section of Carbon and Climate (S-CC) supported the project.

This dataset includes chemical, discrete sample, physical and profile data collected from MIRAI in the North Pacific Ocean from 2004-03-27 to 2004-04-17 and retrieved during cruise MR04-02 and PACIFICA_49NZ20040327. These data include ALKALINITY, AMMONIUM, DISSOLVED INORGANIC CARBON, DISSOLVED OXYGEN, HYDROSTATIC PRESSURE, NITRATE, NITRITE, PHOSPHATE, SALINITY, SILICATE, WATER TEMPERATURE and pH. The instruments used to collect these data include CTD, Coulometer for DIC measurement and bottle. These data were collected by Makio Honda of Japan Agency for Marine-Earth Science and Technology (JAMSTEC) as part of the PACIFICA_49NZ20040327 dataset. PACIFICA (PACIFic ocean Interior CArbon) was an international collaborative project for the data synthesis of ocean interior carbon and its related parameters in the Pacific Ocean. The North Pacific Marine Science Organization (PICES), Section of Carbon and Climate (S-CC) supported the project.

This dataset includes chemical, discrete sample, physical and profile data collected from MIRAI in the North Pacific Ocean from 1997-11-11 to 1997-12-04 and retrieved during cruise MR97-K02 and PACIFICA_49NZ19971111. These data include ALKALINITY, AMMONIUM, DISSOLVED INORGANIC CARBON, DISSOLVED OXYGEN, HYDROSTATIC PRESSURE, NITRATE, NITRITE, PHOSPHATE, SALINITY, SILICATE, WATER TEMPERATURE and pH. The instruments used to collect these data include CTD, Coulometer for DIC measurement and bottle. These data were collected by Makio Honda and Yuichiro Kumamoto of Japan Agency for Marine-Earth Science and Technology (JAMSTEC) and Akihiko Murata of Meteorological Research Institute as part of the PACIFICA_49NZ19971111 dataset. PACIFICA (PACIFic ocean Interior CArbon) was an international collaborative project for the data synthesis of ocean interior carbon and its related parameters in the Pacific Ocean. The North Pacific Marine Science Organization (PICES), Section of Carbon and Climate (S-CC) supported the project.