Current status of homogeneity and stability of the reference materials for nutrients in seawater.
Michio Aoyama,Hidekazu Ota,Munehito Kimura,Takashi Kitao,Hitoshi Mitsuda,Akihiko Murata,Kenichro Sato +6 more
TLDR
RMNS produced by state-of-the-art techniques are currently available for global use to improve the comparability of nutrients data in the open ocean and, as discussed here, are reliable candidates to be used for certified reference materials.Abstract:
The development of Reference Materials for Nutrients in Seawater (RMNS) has been in progress since 1993. When RMNS were produced for nitrate, silicate, and phosphate, their initial homogeneities were as low as 0.1 to 0.2% in samples of high-nutrient seawater, such as deep water from the Pacific Ocean. The relative standard uncertainties associated with instability during long-term (4.8 years) storage were approximately 0.2, 0.2, and 0.4% for nitrate, silicate, and phosphate, respectively. No instability was observed for 1.9 to 6.4 years based on the ISO Guide 35:2006 criteria; however, the relative standard uncertainties associated with instability during long-term storage were larger than the initial homogeneities of RMNS. RMNS produced by state-of-the-art techniques are currently available for global use to improve the comparability of nutrients data in the open ocean and, as discussed here, are reliable candidates to be used for certified reference materials.read more
Citations
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The oceanic sink for anthropogenic CO2 from 1994 to 2007
Nicolas Gruber,D. Clement,Brendan R. Carter,Brendan R. Carter,Richard A. Feely,Steven van Heuven,Mario Hoppema,Masao Ishii,Robert M. Key,Alex Kozyr,Siv K. Lauvset,Siv K. Lauvset,Claire Lo Monaco,Jeremy T. Mathis,Akihiko Murata,Are Olsen,Fiz F. Pérez,Christopher L. Sabine,Toste Tanhua,Rik Wanninkhof +19 more
TL;DR: The oceanic sink for anthropogenic carbon dioxide (CO2) over the period 1994 to 2007 is estimated to be 31 ± 4% of the global anthropogenic CO2 emissions over this period, consistent with the expectation of the ocean uptake having increased in proportion to the rise in atmospheric CO2.
Journal ArticleDOI
The Global Ocean Data Analysis Project version 2 (GLODAPv2) – an internally consistent data product for the world ocean
Are Olsen,R.M. Key,Steven van Heuven,Siv K. Lauvset,Siv K. Lauvset,Anton Velo,X. Lin,Carsten Schirnick,Alex Kozyr,Toste Tanhua,Mario Hoppema,Sara Jutterström,Reiner Steinfeldt,Emil Jeansson,Masao Ishii,Fiz F. Pérez,Toru Suzuki +16 more
TL;DR: The GLODAPv2 data product as discussed by the authors is composed of data from 724 scientific cruises covering the global ocean and includes data from an additional 168 cruises, including data from CARINA (CARbon IN the Atlantic) in 2009/2010, and PACIFICA (PACIFic ocean interior CArbon) in 2013, as well as data from a total of 724 cruises.
Journal ArticleDOI
Determination of phosphorus in natural waters: A historical review
TL;DR: A virtual special issue is introduced that reviews the development of analytical approaches to the determination of phosphorus species in natural waters, focusing on sampling and sample treatment, analytical methods and quality assurance of the data.
Journal ArticleDOI
The Weddell Gyre, Southern Ocean: Present Knowledge and Future Challenges
Maria Vernet,Walter Geibert,Mario Hoppema,Peter J. Brown,Christian Haas,Hartmut Hellmer,Wilfried Jokat,Loïc Jullion,Matthew R. Mazloff,Dorothee C. E. Bakker,J. A. Brearley,Peter Croot,Tore Hattermann,Tore Hattermann,Judith Hauck,Claus-Dieter Hillenbrand,Clara Jule Marie Hoppe,Oliver Huhn,Boris P. Koch,Oliver J. Lechtenfeld,Michael P. Meredith,A. C. Naveira Garabato,Eva-Maria Nöthig,Ilka Peeken,M.M. Rutgers Loeff,Sunke Schmidtko,Michael Schröder,Volker Strass,Sinhue Torres-Valdes,Sinhue Torres-Valdes,Ariane Verdy +30 more
TL;DR: In this paper, the authors review the state-of-the art knowledge concerning the Weddell Gyre from an interdisciplinary perspective, uncovering critical aspects needed to understand this system's role in shaping the future evolution of oceanic heat and carbon uptake over the next decades.
Journal ArticleDOI
GLODAPv2.2019 – an update of GLODAPv2
Are Olsen,Nico Lange,Robert M. Key,Toste Tanhua,Marta Álvarez,Susan Becker,Henry C. Bittig,Brendan R. Carter,Brendan R. Carter,Leticia Cotrim da Cunha,Richard A. Feely,Steven van Heuven,Mario Hoppema,Masao Ishii,Emil Jeansson,Steve D Jones,Sara Jutterström,Maren K. Karlsen,Alex Kozyr,Siv K. Lauvset,Siv K. Lauvset,Claire Lo Monaco,Akihiko Murata,Fiz F. Pérez,Benjamin Pfeil,Carsten Schirnick,Reiner Steinfeldt,Toru Suzuki,Maciej Telszewski,Bronte Tilbrook,Anton Velo,Rik Wanninkhof +31 more
TL;DR: The Global Ocean Data Analysis Project (GLODAPv2, v2.2019) as discussed by the authors provides regular compilations of surface to bottom ocean biogeochemical data, with an emphasis on seawater inorganic carbon chemistry.
References
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Journal ArticleDOI
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J. Murphy,J.P. Riley +1 more
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