GEOMAR Helmholtz Centre for Ocean Research Kiel, Düsternbrooker
Weg 20, 24105 Kiel, Germany
Alex Kozyr
Carbon Dioxide Information Analysis Center, Environmental Sciences
Division, Oak Ridge National Laboratory, U.S. Department of Energy, Building
4500N, Mail Stop 6290, Oak Ridge, TN 37831-6290, USA
Uni Research Climate, Bjerknes Centre for Climate Research, Allegt.
55, 5007 Bergen, Norway
Masao Ishii
Oceanography and Geochemistry Research Department, Meteorological
Research Institute, Japan Meteorological Agency, 1-1 Nagamine, Tsukuba,
305-0052 Japan
Instituto de Investigaciones Marinas – CSIC, Eduardo Cabello 6, 36208
Vigo, Spain
Toru Suzuki
Marine Information Research Center, Japan Hydrographic Association,
1-6-6-6F, Hanedakuko, Otaku, Tokyo, 144-0041 Japan
Sylvain Watelet
Department of Astrophysics, Geophysics and Oceanography, University
of Liège, Liège, Belgium
Abstract. We present a mapped climatology (GLODAPv2.2016b) of ocean biogeochemical variables based on the new GLODAP version 2 data product (Olsen et al., 2016; Key et al., 2015), which covers all ocean basins over the years 1972 to 2013. The quality-controlled and internally consistent GLODAPv2 was used to create global 1° × 1° mapped climatologies of salinity, temperature, oxygen, nitrate, phosphate, silicate, total dissolved inorganic carbon (TCO2), total alkalinity (TAlk), pH, and CaCO3 saturation states using the Data-Interpolating Variational Analysis (DIVA) mapping method. Improving on maps based on an earlier but similar dataset, GLODAPv1.1, this climatology also covers the Arctic Ocean. Climatologies were created for 33 standard depth surfaces. The conceivably confounding temporal trends in TCO2 and pH due to anthropogenic influence were removed prior to mapping by normalizing these data to the year 2002 using first-order calculations of anthropogenic carbon accumulation rates. We additionally provide maps of accumulated anthropogenic carbon in the year 2002 and of preindustrial TCO2. For all parameters, all data from the full 1972–2013 period were used, including data that did not receive full secondary quality control. The GLODAPv2.2016b global 1° × 1° mapped climatologies, including error fields and ancillary information, are available at the GLODAPv2 web page at the Carbon Dioxide Information Analysis Center (CDIAC; doi:10.3334/CDIAC/OTG.NDP093_GLODAPv2).
This paper describes the mapped climatologies that are part of the Global Ocean Data Analysis Project Version 2 (GLODAPv2). GLODAPv2 is a uniformly calibrated open ocean data product on inorganic carbon and carbon-relevant variables. Global mapped climatologies of the total dissolved inorganic carbon, total alkalinity, pH, saturation state of calcite and aragonite, anthropogenic carbon, preindustrial carbon content, inorganic macronutrients, oxygen, salinity, and temperature have been created.
This paper describes the mapped climatologies that are part of the Global Ocean Data Analysis...