A data collation for climate-cooling gas dimethylsulphide in Antarctic snow, sea ice and underlying seawater

The database is comprised of folders of measurements of dimethylsulfide (DMS) and dimethylsulfoniopropionate (DMSP) in ice, snow, slush, water and brine. Data were collated and localised from a variety of studies from 1995-2018. Data come from peer-reviewed publications, field-reports, data repositories and direct contributions by field-research teams. This data compilation was carried out under the auspices of the Scientific Committee on Antarctic Research - ASPeCt program and the Scientific Committee on Ocean Research (SCOR) working group on Biogeochemical Exchange Processes at the Sea-Ice Interfaces (WG-140). Each excel file represents one ice core, snow sample or water sample as a vertical profile with section depth ranges. The information of interest includes the upper limits and mean concentrations of DMS, particulate DMSP (DMSPp), dissolved DMSP (DMSPd) and total DMSP (DMSPt: DMSPd + DMSPp) measured in nanomoles per litre (nmol l-1), for the associated depths. Ancillary data such as nutrients, temperature and chlorophyl a concentrations are also included where possible, as well as descriptive data for the sampling sites, such as date, coordinates, type of ice, snow and ice thickness, core diameter, etc. Some of these studies are time series and some contain replicate cores at each station. To differentiate samples taken on the same date, voyage or location, the files are named accordingly:Date(in YYYYMMDD)_CRUISE_sampletype_sampleID_variable.xlsxFor example, an ice core DMSP sample from 17/10/1997 from the ASAC2100 cruise would be named as following (002 being the sample ID): 19971017_ASAC2100_ice_002_DMSP.xlsxNotes:•    Files with unknown exact dates are named like so: *_19971000_*•    Not all filenames contain sample IDs. Sample IDs will be in the form of a three-digit number, or in the case of files from *ISPOL_snow*, ‘Sxx’ or ‘Ixx’, which correspond to snow samples over slush or over solid ice respectively. Sample ID for *_JCR92-* files are the words ‘Gertie’, ‘Herbie’ or ‘Isolde’ which correspond to station names from Turner et al. (1995).•    Files named with *_JARE48_ice_* have an extra column for combined measurements of DMS and DMSP, which begins in cell BG22.•    Data in this database was either made available by authors or extracted directly from figures using GRABIT. •    Data from files named with *_XVI_ice_* (Gambaro et al. 2004) were extracted using GRABIT, under the assumption that the figure 2 depth profiles related to ice cores and not under-ice water.