GLODAPv2.2019-an update of GLODAPv2

Type Article
Date 2019-09
Language English
Author(s) Olsen AreORCID1, 2, Lange Nico3, Key Robert M.4, Tanhua TosteORCID3, Alvarez MartaORCID5, Becker Susan6, Bittig Henry C.7, Carter Brendan R.8, 9, Da Cunha Leticia CotrimORCID10, Feely Richard A.9, Van Heuven Steven11, Hoppema Mario12, Ishii Masao13, Jeansson Emil14, Jones Steve D.1, 2, Jutterstrom Sara15, Karlsen Maren K.1, 2, Kozyr Alex16, Lauvset Siv K.1, 2, 14, Lo Monaco ClaireORCID17, Murata Akihiko18, Perez Fiz F19, Pfeil Benjamin1, Schirnick Carsten3, Steinfeldt Reiner20, Suzuki Toru21, Telszewski Maciej22, Tilbrook BronteORCID23, Velo AntonORCID19, Wanninkhof Rik24
Affiliation(s) 1 : Univ Bergen, Geophys Inst, Bergen, Norway.
2 : Bjerknes Ctr Climate Res, Bergen, Norway.
3 : GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany.
4 : Princeton Univ, Atmospher & Ocean Sci, Princeton, NJ 08540 USA.
5 : Inst Espanol Oceanog, La Coruna, Spain.
6 : Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA.
7 : Leibniz Inst Balt Sea Res Warnemunde, Rostock, Germany.
8 : Univ Washington, Joint Inst Study Atmosphere & Ocean, Seattle, WA USA.
9 : NOAA, Pacific Marine Environm Lab, 7600 Sand Point Way Ne, Seattle, WA 98115 USA.
10 : Univ Estado Rio de Janeiro, Fac Oceanog, Rio De Janeiro, RJ, Brazil.
11 : Univ Groningen, Fac Sci & Engn, Ctr Isotope Res, Groningen, Netherlands.
12 : Alfred Wegener Inst Helmholtz Ctr Polar & Marine, Bremerhaven, Germany.
13 : Japan Meteorol Agcy, Meteorol Res Inst, Oceanog & Geochem Res Dept, Tsukuba, Ibaraki, Japan.
14 : Bjerknes Ctr Climate Res, NORCE Norwegian Res Ctr, Bergen, Norway.
15 : IVL Swedish Environm Res Inst, Gothenburg, Sweden.
16 : NOAA, Natl Ctr Environm Informat, Silver Spring, MD USA.
17 : Sorbonne Univ, CNRS, LOCEAN, Paris, France.
18 : Japan Agcy Marine Earth Sci & Technol, Res Inst Global Change, Yokosuka, Kanagawa, Japan.
19 : IIM CSIC, Inst Invest Marinas, Vigo, Spain.
20 : Univ Bremen, Inst Environm Phys, Bremen, Germany.
21 : Japan Hydrog Assoc, Marine Informat Res Ctr, Tokyo, Japan.
22 : Polish Acad Sci, Inst Oceanol, Int Ocean Carbon Coordinat Project, Sopot, Poland.
23 : Univ Tasmania, Oceans & Atmosphere & Antarctic Climate & Ecosyst, CSIRO, Hobart, Tas, Australia.
24 : NOAA, Atlantic Oceanog & Meteorol Lab, Miami, FL 33149 USA.
Source Earth System Science Data (1866-3508) (Copernicus Gesellschaft Mbh), 2019-09 , Vol. 11 , N. 3 , P. 1437-1461
DOI 10.5194/essd-11-1437-2019
WOS© Times Cited 20
Abstract 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, 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 CCl4) 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 mu mol kg(-1) in dissolved inorganic carbon, 4 mu mol kg(-1) 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. The original data, their documentation and DOI codes are available in the Ocean Carbon Data System of NOAA NCEI (https://www.nodc.noaa.gov/ocads/oceans/GLODAPv2_2019/, 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 https://doi.org/10.25921/xnme-wr20 (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.
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Olsen Are, Lange Nico, Key Robert M., Tanhua Toste, Alvarez Marta, Becker Susan, Bittig Henry C., Carter Brendan R., Da Cunha Leticia Cotrim, Feely Richard A., Van Heuven Steven, Hoppema Mario, Ishii Masao, Jeansson Emil, Jones Steve D., Jutterstrom Sara, Karlsen Maren K., Kozyr Alex, Lauvset Siv K., Lo Monaco Claire, Murata Akihiko, Perez Fiz F, Pfeil Benjamin, Schirnick Carsten, Steinfeldt Reiner, Suzuki Toru, Telszewski Maciej, Tilbrook Bronte, Velo Anton, Wanninkhof Rik (2019). GLODAPv2.2019-an update of GLODAPv2. Earth System Science Data, 11(3), 1437-1461. Publisher's official version : https://doi.org/10.5194/essd-11-1437-2019 , Open Access version : https://archimer.ifremer.fr/doc/00675/78722/