Table 5 Quality control (QC) flags used for dissolved inorganic nutrients (nitrite, nitrate, phosphate, silicate), pigments (ChlA, Phaeo), particulates (POC, PN) and Winkler dissolved oxygen (DOW) samples.

From: Thirty Years of Nutrient Biogeochemistry in the Barents Sea and the adjoining Arctic Ocean, 1990–2019

ASCII flag

netCDF flag

Action

0

[48, or 48b]

No QC performed

1

[49, or 49b]

Good data

2

[50, or 50b]

Data did not conform to expected outcome, but cannot be discarded

3

[51, or 51b]

Data appears compromised and cannot be corrected

4

[52, or 52b]

Bad data clearly beyond correction

5

[53, or 53b]

Good data that appears misplaced, and has been corrected

6

[54, or 54b]

Data value below detection

7

[55, or 55b]

Measured value beyond detection

8

[56, or 56b]

Interpolated value

9

[57, or 57b]

Missing data

A

[65, or 65b]

Uncertainty of the data value

  1. The dataset is distributed in two file formats; a comma separated values (ASCII format) or a network common data form (NetCDF). Selected data will therefore appear in the ASCII format with numeral flags (ASCII flag), or as 8-byte numerals in the netCDF format (netCDF flag). See Jaccard et al.13 for more detailed descriptions of the terms used below. The data header will list all the flags listed, but only QC flags 0–5 (ASCII) and flags 48–53 or 48b–53b (netCDF) were used to evaluate our data.
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