| accessions_id: |
0227166 | archive
|
| Title: |
Compilation of dissolved organic matter (DOM) data obtained from global ocean observations from 1994 to 2020 (NCEI Accession 0227166) |
| Abstract: |
This NCEI Accession consists of measurements of dissolved organic matter (DOM) and other chemical and hydrographic parameters obtained during the global ocean observations from 1994-01-01 to 2019-12-31. Measurements of dissolved organic matter (DOM) in the open ocean have increased greatly since the late 1980's, spurred by the growth in scientific interest directed at the ocean carbon cycle. Analytical quality for determining the elemental concentrations of DOM was commonly low in those early years, but through great effort and use of consensus reference materials its quality has improved with time. The data in this compilation should be used with the trajectory of improved analytical quality with time in mind. DOM data generated by many laboratories around the world are typically made available in diverse, regional data archives, making them less available than necessary for the data value to be maximized. The effort here was to make ship-collected bottle data accessible more directly and in uniform format. The emphasis was on spatial coverage of the global ocean, so the well-known and ongoing time-series data (such as the Bermuda Atlantic Time-series Study and Hawaiian Ocean Time-series) are not included; nor are coastal waters well represented in this first version. While the focus of this compilation is largely on dissolved organic carbon (DOC) and total dissolved nitrogen (TDN), we extended coverage to include the less frequently determined DOM isotopes (13C, 14C), select wavelengths and a single spectral slope of colored dissolved organic matter (CDOM), and DOM composition (i.e., dissolved combined neutral sugars). To the extent possible, the DOM data have been complemented with hydrographic data (e.g., temperature and salinity), other biogeochemical variables (e.g., oxygen, nutrients), the inorganic carbon system [e.g., dissolved inorganic carbon (with isotopes when available), pH, and total alkalinity], and anthropogenic (chlorofluorocarbons, sulfur hexafluoride, carbon tetrachloride) and natural tracers (neon, helium, tritium). A very few data are included for biological variables such as bacterial abundance and chlorophyll a concentrations. These data are from all ocean basins taken from 230 cruises in the global ocean, providing 94324 measures of DOC (full water column where available) and 29113 measures of TDN (limited to the surface 250 m). |
| Date received: |
20210219 |
| Start date: |
19940101 |
| End date: |
20191231 |
| Seanames: |
Arctic Ocean, Indian Ocean, North Atlantic Ocean, North Pacific Ocean, South Atlantic Ocean, Southern Ocean, South Pacific Ocean
|
| West boundary: |
-180 |
| East boundary: |
180 |
| North boundary: |
90 |
| South boundary: |
-90 |
| Observation types: |
chemical, discrete sample, physical, profile
|
| Instrument types: |
CTD, Niskin bottle, nutrient autoanalyzer, oxygen sensor, salinometer, titrator
|
| Datatypes: |
AMMONIUM (NH4), BACTERIA - BACTERIAL DENSITY, CHLOROFLUOROCARBON-113 (CFC-113), CHLOROFLUOROCARBON-11 (CFC-11), CHLOROFLUOROCARBON-12 (CFC-12), CHLOROPHYLL A, Chromophoric Dissolved Organic Matter (CDOM), DELTA CARBON-13, DELTA CARBON-14, DELTA HELIUM-3, DISSOLVED INORGANIC CARBON (DIC), DISSOLVED ORGANIC CARBON, DISSOLVED ORGANIC MATTER, DISSOLVED OXYGEN, HELIUM, NITRATE, NITRITE, nitrous oxide (N2O), partial pressure of carbon dioxide - water, PARTICULATE ORGANIC CARBON, PARTICULATE ORGANIC NITROGEN (PON), pH, SALINITY, silicate, sulfur hexafluoride (SF6), total alkalinity, Total Dissolved Nitrogen (TDN), Tritium (Hydrogen isotope), WATER TEMPERATURE
|
| Submitter: |
Hansell, Dennis A. |
| Submitting institution: |
University of Miami Rosenstiel School of Marine and Atmospheric Science |
| Collecting institutions: |
Hokkaido University, Instituto de Investigacións Mariñas de Vigo, Monterey Bay Aquarium Research Institute, Texas A&M University; College Station, University of California, Santa Barbara, University of Miami, University of Miami Rosenstiel School of Marine and Atmospheric Science
|
| Contributing projects: |
CLIVAR, GLODAP, GO-SHIP, WOCE
|
| Platforms: |
VARIOUS CHARTERED VESSELS (1888) |
| Number of observations: |
|
| Supplementary information: |
|
| Availability date: |
|
| Metadata version: |
3 |
| Keydate: |
2021-03-23 17:27:13+00 |
| Editdate: |
2021-04-09 17:58:26+00 |