GLODAPv2.2019 – an update of GLODAPv2
<p>The Global Ocean Data Analysis Project (GLODAP) is a synthesis effort providing regular compilations of surface to bottom ocean biogeochemical data, with an emphasis on seawater inorganic carbon chemistry and related variables determined through chemical analysis of water samples. This upda...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2019-09-01
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| Series: | Earth System Science Data |
| Online Access: | https://www.earth-syst-sci-data.net/11/1437/2019/essd-11-1437-2019.pdf |
| _version_ | 1818498993213145088 |
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| author | A. Olsen N. Lange R. M. Key T. Tanhua M. Álvarez S. Becker H. C. Bittig B. R. Carter B. R. Carter L. Cotrim da Cunha R. A. Feely S. van Heuven M. Hoppema M. Ishii E. Jeansson S. D. Jones S. Jutterström M. K. Karlsen A. Kozyr S. K. Lauvset S. K. Lauvset C. Lo Monaco A. Murata F. F. Pérez B. Pfeil C. Schirnick R. Steinfeldt T. Suzuki M. Telszewski B. Tilbrook A. Velo R. Wanninkhof |
| author_facet | A. Olsen N. Lange R. M. Key T. Tanhua M. Álvarez S. Becker H. C. Bittig B. R. Carter B. R. Carter L. Cotrim da Cunha R. A. Feely S. van Heuven M. Hoppema M. Ishii E. Jeansson S. D. Jones S. Jutterström M. K. Karlsen A. Kozyr S. K. Lauvset S. K. Lauvset C. Lo Monaco A. Murata F. F. Pérez B. Pfeil C. Schirnick R. Steinfeldt T. Suzuki M. Telszewski B. Tilbrook A. Velo R. Wanninkhof |
| author_sort | A. Olsen |
| collection | DOAJ |
| description | <p>The Global Ocean Data Analysis Project (GLODAP) is a
synthesis effort providing regular compilations of surface to bottom ocean
biogeochemical data, with an emphasis on seawater inorganic carbon chemistry
and related variables determined through chemical analysis of water samples.
This update of GLODAPv2,<span id="page1438"/> v2.2019, adds data from 116 cruises to the previous
version, extending its coverage in time from 2013 to 2017, while also adding
some data from prior years. GLODAPv2.2019 includes measurements from more
than 1.1 million water samples from the global oceans collected on 840
cruises. The data for the 12 GLODAP core variables (salinity, oxygen,
nitrate, silicate, phosphate, dissolved inorganic carbon, total alkalinity,
pH, CFC-11, CFC-12, CFC-113, and <span class="inline-formula">CCl<sub>4</sub></span>) have undergone extensive quality
control, especially systematic evaluation of bias. The data are available in
two formats: (i) as submitted by the data originator but updated to WOCE
exchange format and (ii) as a merged data product with adjustments applied
to minimize bias. These adjustments were derived by comparing the data from
the 116 new cruises with the data from the 724 quality-controlled cruises of
the GLODAPv2 data product. They correct for errors related to measurement,
calibration, and data handling practices, taking into account any known or
likely time trends or variations. The compiled and adjusted data product is
believed to be consistent to better than 0.005 in salinity, 1 % in oxygen,
2 % in nitrate, 2 % in silicate, 2 % in phosphate, 4 <span class="inline-formula">µ</span>mol kg<span class="inline-formula"><sup>−1</sup></span> in dissolved inorganic carbon, 4 <span class="inline-formula">µ</span>mol kg<span class="inline-formula"><sup>−1</sup></span> in total
alkalinity, 0.01–0.02 in pH, and 5 % in the halogenated transient
tracers. The compilation also includes data for several other variables,
such as isotopic tracers. These were not subjected to bias comparison or
adjustments.</p>
<p>The original data, their documentation and DOI codes are available in the
Ocean Carbon Data System of NOAA NCEI
(<span class="uri">https://www.nodc.noaa.gov/ocads/oceans/GLODAPv2_2019/</span>, last access: 17 September 2019). This
site also provides access to the merged data product, which is provided as a
single global file and as four regional ones – the Arctic, Atlantic, Indian,
and Pacific oceans – under <a href="https://doi.org/10.25921/xnme-wr20">https://doi.org/10.25921/xnme-wr20</a>
(Olsen et al., 2019). The
product files also include significant ancillary and approximated data.
These were obtained by interpolation of, or calculation from, measured data.
This paper documents the GLODAPv2.2019 methods and provides a broad overview
of the secondary quality control procedures and results.</p> |
| first_indexed | 2024-12-10T20:23:04Z |
| format | Article |
| id | doaj.art-792eb2ced65c40fe9e070eb8705987d6 |
| institution | Directory Open Access Journal |
| issn | 1866-3508 1866-3516 |
| language | English |
| last_indexed | 2024-12-10T20:23:04Z |
| publishDate | 2019-09-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Earth System Science Data |
| spelling | doaj.art-792eb2ced65c40fe9e070eb8705987d62022-12-22T01:34:57ZengCopernicus PublicationsEarth System Science Data1866-35081866-35162019-09-01111437146110.5194/essd-11-1437-2019GLODAPv2.2019 – an update of GLODAPv2A. Olsen0N. Lange1R. M. Key2T. Tanhua3M. Álvarez4S. Becker5H. C. Bittig6B. R. Carter7B. R. Carter8L. Cotrim da Cunha9R. A. Feely10S. van Heuven11M. Hoppema12M. Ishii13E. Jeansson14S. D. Jones15S. Jutterström16M. K. Karlsen17A. Kozyr18S. K. Lauvset19S. K. Lauvset20C. Lo Monaco21A. Murata22F. F. Pérez23B. Pfeil24C. Schirnick25R. Steinfeldt26T. Suzuki27M. Telszewski28B. Tilbrook29A. Velo30R. Wanninkhof31Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, NorwayGEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, GermanyAtmospheric and Oceanic Sciences, Princeton University, Princeton, NJ, 08540, USAGEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, GermanyInstituto Español de Oceanografía, A Coruña, SpainUC San Diego, Scripps Institution of Oceanography, San Diego, CA 92093, USALeibniz Institute for Baltic Sea Research Warnemünde, Rostock, GermanyJoint Institute for the Study of the Atmosphere and Ocean, University Washington, Seattle, Washington, USAPacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, Seattle, Washington, USAFaculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro (RJ), BrazilPacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, Seattle, Washington, USACentre for Isotope Research, Faculty of Science and Engineering, University of Groningen, Groningen, the NetherlandsAlfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, GermanyOceanography and Geochemistry Research Department, Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, JapanNORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, NorwayGeophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, NorwayIVL Swedish Environmental Research Institute, Gothenburg, SwedenGeophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, NorwayNOAA National Centers for Environmental Information, Silver Spring, MD, USAGeophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, NorwayNORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, NorwayLOCEAN, CNRS, Sorbonne Université, Paris, FranceResearch Institute for Global Change, Japan Agency for Marine-Earth Sciences and Technology, Yokosuka, JapanInstituto de Investigaciones Marinas, IIM – CSIC, Vigo, SpainGeophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, NorwayGEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, GermanyUniversity of Bremen, Institute of Environmental Physics, Bremen, GermanyMarine Information Research Center, Japan Hydrographic Association, Tokyo, JapanInternational Ocean Carbon Coordination Project, Institute of Oceanology of Polish Academy of Sciences, Sopot, PolandCSIRO Oceans and Atmosphere and Antarctic Climate and Ecosystems Co-operative Research Centre, University of Tasmania, Hobart, AustraliaInstituto de Investigaciones Marinas, IIM – CSIC, Vigo, SpainAtlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration, Miami, USA<p>The Global Ocean Data Analysis Project (GLODAP) is a synthesis effort providing regular compilations of surface to bottom ocean biogeochemical data, with an emphasis on seawater inorganic carbon chemistry and related variables determined through chemical analysis of water samples. This update of GLODAPv2,<span id="page1438"/> v2.2019, adds data from 116 cruises to the previous version, extending its coverage in time from 2013 to 2017, while also adding some data from prior years. GLODAPv2.2019 includes measurements from more than 1.1 million water samples from the global oceans collected on 840 cruises. The data for the 12 GLODAP core variables (salinity, oxygen, nitrate, silicate, phosphate, dissolved inorganic carbon, total alkalinity, pH, CFC-11, CFC-12, CFC-113, and <span class="inline-formula">CCl<sub>4</sub></span>) have undergone extensive quality control, especially systematic evaluation of bias. The data are available in two formats: (i) as submitted by the data originator but updated to WOCE exchange format and (ii) as a merged data product with adjustments applied to minimize bias. These adjustments were derived by comparing the data from the 116 new cruises with the data from the 724 quality-controlled cruises of the GLODAPv2 data product. They correct for errors related to measurement, calibration, and data handling practices, taking into account any known or likely time trends or variations. The compiled and adjusted data product is believed to be consistent to better than 0.005 in salinity, 1 % in oxygen, 2 % in nitrate, 2 % in silicate, 2 % in phosphate, 4 <span class="inline-formula">µ</span>mol kg<span class="inline-formula"><sup>−1</sup></span> in dissolved inorganic carbon, 4 <span class="inline-formula">µ</span>mol kg<span class="inline-formula"><sup>−1</sup></span> in total alkalinity, 0.01–0.02 in pH, and 5 % in the halogenated transient tracers. The compilation also includes data for several other variables, such as isotopic tracers. These were not subjected to bias comparison or adjustments.</p> <p>The original data, their documentation and DOI codes are available in the Ocean Carbon Data System of NOAA NCEI (<span class="uri">https://www.nodc.noaa.gov/ocads/oceans/GLODAPv2_2019/</span>, last access: 17 September 2019). This site also provides access to the merged data product, which is provided as a single global file and as four regional ones – the Arctic, Atlantic, Indian, and Pacific oceans – under <a href="https://doi.org/10.25921/xnme-wr20">https://doi.org/10.25921/xnme-wr20</a> (Olsen et al., 2019). The product files also include significant ancillary and approximated data. These were obtained by interpolation of, or calculation from, measured data. This paper documents the GLODAPv2.2019 methods and provides a broad overview of the secondary quality control procedures and results.</p>https://www.earth-syst-sci-data.net/11/1437/2019/essd-11-1437-2019.pdf |
| spellingShingle | A. Olsen N. Lange R. M. Key T. Tanhua M. Álvarez S. Becker H. C. Bittig B. R. Carter B. R. Carter L. Cotrim da Cunha R. A. Feely S. van Heuven M. Hoppema M. Ishii E. Jeansson S. D. Jones S. Jutterström M. K. Karlsen A. Kozyr S. K. Lauvset S. K. Lauvset C. Lo Monaco A. Murata F. F. Pérez B. Pfeil C. Schirnick R. Steinfeldt T. Suzuki M. Telszewski B. Tilbrook A. Velo R. Wanninkhof GLODAPv2.2019 – an update of GLODAPv2 Earth System Science Data |
| title | GLODAPv2.2019 – an update of GLODAPv2 |
| title_full | GLODAPv2.2019 – an update of GLODAPv2 |
| title_fullStr | GLODAPv2.2019 – an update of GLODAPv2 |
| title_full_unstemmed | GLODAPv2.2019 – an update of GLODAPv2 |
| title_short | GLODAPv2.2019 – an update of GLODAPv2 |
| title_sort | glodapv2 2019 an update of glodapv2 |
| url | https://www.earth-syst-sci-data.net/11/1437/2019/essd-11-1437-2019.pdf |
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