![]() The traceability of the QC decisions is further guaranteed through an online adjustment table. Important to note is that the QC is performed in strong collaboration with the data generator and evaluated with external expert groups. For the 2nd QC (accuracy checks) the crossover toolbox ( Lauvset and Tanhua 2015) executes a systematic evaluation of bias. 2020) which enables faster and more consistent decision making. The 1st QC (precision checks) is supported through the extensive plotting tool AtlantOS QC ( Velo et al. Once data is ingested and formatted, the scientific QC (quality control), the most important part of the workflow, has to be performed. High quality and intercomparable data – The workflowĪs a seamless data ingestion system with automated data formatting, unit conversion and sanity checks is still under development, the workflow starts with manual acquisition of individual cruise data. Presently however, the workflow of GLODAP still includes a fair bit of manual labor with some bottlenecks present. Towards these more regular and frequent releases, the automation of the corresponding workflow is crucial. As this is very time demanding the yearly updates are restricted to the addition- and bias-correction of new cruise data using the most recent GLODAP update as reference. The decadal version releases encompass a full consistency analysis, including the usage of inversion models, of all present cruise data. Thus, starting with GLODAPv2.2019 we aim at yearly updates and decadal version releases in concert with the repeated hydrography observation program GO-SHIP. Regular and frequent data updates have become inevitable given the urgency and complexity of climate change. This enables, among other things, the quantification of the ocean carbon sink, ocean acidification and evaluation of ocean biogeochemical models. As of now, more than 1.2 million samples from almost 1000 different research cruises dating back to 1972 have been included in GLODAPv2.2020 (Olsen et al. The related core variables (salinity, oxygen, phosphate, nitrate, silicate, dissolved inorganic carbon, total alkalinity, pH, CFC-11, CFC-12, CFC-113 and CCl4) are subjected to extensive quality control and are biased corrected. one access point, with consistent quality controlled data of carbon relevant ship-based interior ocean observations. The overarching goal is to provide one product, i.e. 2016) is an ongoing synthesis activity for ocean surface to bottom biogeochemical data. The GLobal Ocean Data Analysis Project ( GLODAP, Olsen et al.
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