This dataset includes discrete sample and profile data collected during the R/V Sarmiento de Gamboa CLIVAR Repeat Section A05_2011 cruise 24N_Malaspina_2011 (EXPOCODE 29AH20110128) in the North Atlantic Ocean from 2011-01-28 to 2011-03-14. This dataset is U.S. State Department MSR U2011-006 as part of the World Data Service for Oceanography. These data include total alkalinity, (TA), pH on the total scale, water temperature, salinity, dissolved oxygen and nutrients. The instruments used to collect these data include Alkalinity titrator, CTD, Niskin bottles and spectrophotometer. These data were collected by AÃda F. RÃos and Fiz F. Pérez of Institute of Marine Research Vigo (IIM) and Alonso Hernández-Guerra of Universidad de Las Palmas de Gran Canaria (ULPGC) as part of the CLIVAR_A05_29AH20110128 dataset. 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 discrete measurements and profile observations of total alkalinity, pH on total scale, temperature, salinity, dissolved oxygen and nutrients during the R/V Nathaniel B. Palmer the Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) project, NBP1701, HazMat cruise (EXPOCODE 320620161224) in the Southern Ocean from 2016-12-24 to 2017-01-20. SOCCOM project is a large scale National Science Foundation funded research project based at Princeton University that started in September 2014. The project aims to increase the understanding of the Southern Ocean and the role it plays in factors such as climate, as well as educate new scientists with oceanic observation.

This dataset includes discrete sample and profile data collected during the R/V Sarmiento de Gamboa cruise CAIBOX (EXPOCODE 29AH20090725) in the North Atlantic Ocean from 2009-07-25 to 2009-08-13. These data include total alkalinity, pH on total scale, water temperature, salinity, dissolved oxygen concentration, silicate, phosphate and nitrate. The instruments used to collect these data include Alkalinity titrator, CTD, Niskin bottles and spectrophotometer. These data were collected by AÃda F. RÃos, Fiz F. Pérez, and Miguel Gilcoto of Institute of Marine Research Vigo (IIM) as part of the CLIVAR_CAIBOX_2009 dataset. 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 contains global monthly climatology of oceanic total alkalinity (AT). Total alkalinity (AT) monthly climatology was created from a neural network approach (Broullón et al., 2019). The neural network was trained with GLODAPv2.2019 data (Olsen et al., 2019) using as predictor variables position (latitude, longitude and depth), temperature, salinity, phosphate, nitrate, silicate and dissolved oxygen. The relations extracted between these predictor variables and AT were used to obtain the climatology passing through the network global monthly climatologies of the predictor variables: temperature and salinity fields of the World Ocean Atlas version 2013 (WOA13), filtered WOA13 oxygen (fifth-order one-dimensional median filter through the depth dimension; see Broullón et al., 2019 for details) and nutrients computed using CANYON-B (Bittig et al., 2018) over the three previous fields. The obtained climatology has a 1ºx1º spatial resolution and 102 depth levels between 0 and 5500 m, with a monthly resolution from 0 to 1500 m and an annual resolution from 1550 to 5500m.

This dataset includes discrete sample and profile data collected during the R/V Sarmiento de Gamboa OVIDE-16 cruise (EXPOCODE 29AH20160617) in the North Atlantic Ocean from 2016-06-17 to 2016-07-31. These data include total alkalinity, pH on sea water scale, oxygen, temperature, salinity, nutrients and chlorofluorocarbons. The instruments used to collect these data include alkalinity titrator, CTD, Niskin bottles and spectrophotometer. The International GO-SHIP 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. The objectives of the OVIDE-16 cruise are fulfilled in spite of the problems derived from the installation of the new signal transmission cable. This operation delayed the departure by one week. However, this delay was recovered thanks to the speed of the ship, the constant adaptation of the cruise planning to the weather forecasts and the excellent reliability of the CTD and box- corer operations. A total of 138 CTD stations and 66 sediment sampling were done. In addition, the recovery and new deployment of two ASFAR-ARGO systems were done, as well as the deployment of five meteorological floats and nine ARGO floats.

This dataset includes discrete profile data collected during the R/V Gilliss MILLERO_76 cruise (EXPOCODE 31GI19760901) in the West Mediterranean Sea from 1976-09-01 to 1976-09-01. These data include total alkalinity, pH on total scale measured at 25ºC, temperature and salinity.

This product is a result of the use of a decision tree-based advanced machine learning algorithm (XGB) combined with an ensemble approach to predict the surface total alkalinity (TA) of the North Indian Ocean (NIO) (Longitude: 50E-100E, Latitude: 0-26N) using ship-based observations collected from different sources for the period 1978-2019 and a reanalysis data product. The ensemble approach enables the development of the best high-resolution (1/12°) surface TA estimates (INCOIS_TA) with an uncertainty map. This data has a monthly frequency and ranges from 1993 to 2020.

This dataset includes discrete profile measurements of Total alkalinity (TA), pH on sea water scale, chlorofluorocarbons (CFC-11, CFC-12), dissolved oxygen, temperature and salinity collected from R/V Thalassa cruise SUBPOLAR08 (EXPOCODE 35TH20080825) in the North Atlantic Ocean, Davis Strait and Labrador Sea from 2008-08-25 to 2008-09-15.