Annotations specific to a parameter should include the
cruise's expocode and the parameter name in the subject
as they appear all in a
single collection of annotations pertaining to this
adjustment/cruise

GLODAPv3 release: converted value for silicate_offset from percent to factor for 74DI20120731[1-last]

GLODAPv3 release: CORRIGENDUM - converted value for silicate_offset from percent
to factor: 1.0.

Posted by nlange@geomar.de on 2026-08-05 16:38:04 UTC for data product: GLODAPv3

GLODAPv3 release: converted value for phosphate_offset from percent to factor for 74DI20120731[1-last]

GLODAPv3 release: CORRIGENDUM - converted value for phosphate_offset from
percent to factor: 1.048.

Posted by nlange@geomar.de on 2026-08-05 16:37:50 UTC for data product: GLODAPv3

GLODAPv3 release: converted value for oxygen_offset from percent to factor for 74DI20120731[1-last]

GLODAPv3 release: CORRIGENDUM - converted value for oxygen_offset from percent
to factor: 1.006.

Posted by nlange@geomar.de on 2026-08-05 16:37:37 UTC for data product: GLODAPv3

GLODAPv3 release: converted value for nitrate_offset from percent to factor for 74DI20120731[1-last]

GLODAPv3 release: CORRIGENDUM - converted value for nitrate_offset from percent
to factor: 1.0.

Posted by nlange@geomar.de on 2026-08-05 16:37:25 UTC for data product: GLODAPv3

GLODAPv3 release: autogenerated silicate update for 74DI20120731[1-last]

GLODAPv3 release: CORRIGENDUM - silicate update of 74DI20120731[1-last] based on
silicate_offset: 0.0; inversion: 0.0; inversion_full: 0.4; preadjustment: 0;
offsets_raw: -3.5; offsets_preadj: -1.1; offsets_preadj_u: 0.7; offsets_post:
-0.6; offsets_post_u: 0.7; offsets_post_rt: -1.0; numberofxovers: 12;
trends_pre: -0.3; trends_adj: 0.0.

Posted by nlange@geomar.de on 2026-08-05 14:17:33 UTC for data product: GLODAPv3

74DI20120731[1-last] GLODAPv3 release

GLODAPv3 release: silicate autogenerated adjustment parameter update for
74DI20120731 - select parameter to view annotation with specific details.

Posted by nlange@geomar.de on 2026-08-05 14:17:33 UTC for data product: GLODAPv3

GLODAPv3 release: temperature added as NEW adjustment parameter to 74DI20120731[1-last]

Automated addition of temperature as NEW parameter to 74DI20120731[1-last] based
on temperature_offset: -888.

Posted by nlange@geomar.de on 2026-08-05 14:17:19 UTC for data product: GLODAPv3

74DI20120731[1-last] GLODAPv3 release

Automated addition of temperature as NEW adjustment parameter in GLODAPv3 to
74DI20120731[1-last] - select parameter to view annotation with specific
details.

Posted by nlange@geomar.de on 2026-08-05 14:17:19 UTC for data product: GLODAPv3

GLODAPv3 release: autogenerated tco2 update for 74DI20120731

GLODAPv3 release: tco2 update of 74DI20120731 based on tco2_offset: 5.2;
inversion: 5.2; inversion_full: 5.2; preadjustment: 0; offsets_raw: -2.8;
offsets_preadj: -5.3; offsets_preadj_u: 1.0; offsets_post: 0.0; offsets_post_u:
0.9; offsets_post_rt: 2.8; numberofxovers: 14; trends_pre: 0.3; trends_adj: 0.3.

Posted by nlange@geomar.de on 2026-08-04 17:12:20 UTC for data product: GLODAPv3

74DI20120731 GLODAPv3 release

GLODAPv3 release: tco2 autogenerated adjustment parameter update for
74DI20120731 - select parameter to view annotation with specific details.

Posted by nlange@geomar.de on 2026-08-04 17:12:20 UTC for data product: GLODAPv3

GLODAPv3 release: autogenerated salinity update for 74DI20120731

GLODAPv3 release: salinity update of 74DI20120731 based on salinity_offset:
-888.0000; inversion: 0.0000; inversion_full: 0.0035; preadjustment: 0;
offsets_raw: -0.0233; offsets_preadj: -0.0042; offsets_preadj_u: 0.0040;
offsets_post: -0.0036; offsets_post_u: 0.0069; offsets_post_rt: -0.0225;
numberofxovers: 7; trends_pre: -0.0009; trends_adj: 0.0000.

Posted by nlange@geomar.de on 2026-08-04 17:11:50 UTC for data product: GLODAPv3

74DI20120731 GLODAPv3 release

GLODAPv3 release: salinity autogenerated adjustment parameter update for
74DI20120731 - select parameter to view annotation with specific details.

Posted by nlange@geomar.de on 2026-08-04 17:11:50 UTC for data product: GLODAPv3

GLODAPv3 release: autogenerated phosphate update for 74DI20120731

GLODAPv3 release: phosphate update of 74DI20120731 based on phosphate_offset:
4.8; inversion: -0.2; inversion_full: -0.2; preadjustment: 5; offsets_raw: 0.5;
offsets_preadj: 0.6; offsets_preadj_u: 0.9; offsets_post: -0.0; offsets_post_u:
0.8; offsets_post_rt: -0.2; numberofxovers: 7; trends_pre: 0.0; trends_adj: 0.0.

Posted by nlange@geomar.de on 2026-08-04 17:11:35 UTC for data product: GLODAPv3

74DI20120731 GLODAPv3 release

GLODAPv3 release: phosphate autogenerated adjustment parameter update for
74DI20120731 - select parameter to view annotation with specific details.

Posted by nlange@geomar.de on 2026-08-04 17:11:35 UTC for data product: GLODAPv3

GLODAPv3 release: autogenerated oxygen update for 74DI20120731

GLODAPv3 release: oxygen update of 74DI20120731 based on oxygen_offset: 0.6;
inversion: 0.6; inversion_full: 0.6; preadjustment: 0; offsets_raw: -0.6;
offsets_preadj: -0.8; offsets_preadj_u: 0.2; offsets_post: -0.0; offsets_post_u:
0.2; offsets_post_rt: 0.1; numberofxovers: 22; trends_pre: 0.0; trends_adj: 0.0.

Posted by nlange@geomar.de on 2026-08-04 17:11:21 UTC for data product: GLODAPv3

74DI20120731 GLODAPv3 release

GLODAPv3 release: oxygen autogenerated adjustment parameter update for
74DI20120731 - select parameter to view annotation with specific details.

Posted by nlange@geomar.de on 2026-08-04 17:11:21 UTC for data product: GLODAPv3

GLODAPv3 release: autogenerated nitrate update for 74DI20120731

GLODAPv3 release: nitrate update of 74DI20120731 based on nitrate_offset: 0.0;
inversion: 0.0; inversion_full: -0.4; preadjustment: 0; offsets_raw: 0.2;
offsets_preadj: 0.3; offsets_preadj_u: 0.6; offsets_post: 0.4; offsets_post_u:
0.6; offsets_post_rt: 0.1; numberofxovers: 10; trends_pre: 0.0; trends_adj: 0.0.

Posted by nlange@geomar.de on 2026-08-04 17:11:08 UTC for data product: GLODAPv3

74DI20120731 GLODAPv3 release

GLODAPv3 release: nitrate autogenerated adjustment parameter update for
74DI20120731 - select parameter to view annotation with specific details.

Posted by nlange@geomar.de on 2026-08-04 17:11:08 UTC for data product: GLODAPv3

GLODAPv3 release: autogenerated alkalinity update for 74DI20120731

GLODAPv3 release: alkalinity update of 74DI20120731 based on alkalinity_offset:
2.6; inversion: 2.6; inversion_full: 3.1; preadjustment: 0; offsets_raw: -1.4;
offsets_preadj: -1.2; offsets_preadj_u: 0.8; offsets_post: -0.0; offsets_post_u:
0.8; offsets_post_rt: -0.3; numberofxovers: 11; trends_pre: 0.0; trends_adj:
0.0.

Posted by nlange@geomar.de on 2026-08-04 13:46:33 UTC for data product: GLODAPv3

74DI20120731 GLODAPv3 release

GLODAPv3 release: alkalinity autogenerated adjustment parameter update for
74DI20120731 - select parameter to view annotation with specific details.

Posted by nlange@geomar.de on 2026-08-04 13:46:33 UTC for data product: GLODAPv3

74DI20120731 - oxygen

This is a very variable regon and even the noticeable profile changes could be
natural water mass changes. We err on the side of caution and do not adjust

Posted by siv.lauvset@uib.no on 2018-10-01 09:24:37 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021, v2.2022, v2.2023

74DI20120731 - c13

Both the inversion and the offset mean of the crossover suggest a correction of
0.13‰ for the cruise (Humphreys
et al., 2015). This most recent cruise took place near the
Scotland–Iceland Ridge, where the deep water masses cannot
be assumed to be constant over time. All crossovers indicate
a lower 13C-DIC of this cruise when comparing it with
the others, which is consistent with an increased amount of
anthropogenic carbon. Therefore, no adjustment was applied.

Posted by nlange@geomar.de on 2018-09-05 17:50:21 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021, v2.2022, v2.2023

74DI20120731 - oxygen

The profiles show rather strong deviations from cruises in the same area - the
profiles don't vary as strongly with depth and do not show the maximum most
other cruises have. However, also note that the youngest cruise used for a
crossover is from 2003…. Even though one adjustment only does not completely
justfiy this case, I would suggest an upward adjustment of at least 1.01

Posted by nlange@geomar.de on 2018-08-17 10:06:37 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021, v2.2022, v2.2023

74DI20120731 - silicate

Even though the absolute weighted mean suggsets that a rather strong upward
adjustment is needed, a closer look reveals that the concentrations are not too
low in general. The "individual mean offsets" are strongly influenced by offsets
in the upper part of the deep water, see examplarily crossovers with the Meteor
cruises. The deeper waters do not show this negative offset at all instead
rather indicating too high concentrations. This holds for all "good"
crossovers. Ignore weighted mean and maintain.

Posted by nlange@geomar.de on 2018-08-17 10:05:01 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021, v2.2022, v2.2023

74DI20120731 - salinity

The salinity crossovers show nicely how variable this region is. Even the strong
outliers (except for JH1994 as it hasn't received full 2n QC) should not be
ignored… The uncertainty of the analysis is also reflected in the large
standard deviations of the mean offsets. My suggestion is to either keep it as
is or give it a -888.

Posted by nlange@geomar.de on 2018-08-17 10:04:16 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021, v2.2022, v2.2023

74DI20120731 - phosphate

All crossover results indicate too low concentrations. Given the nice agreement
(even though not all crossovers are of the same quality e.g. 316N1996) an upward
adjustment is justified even though it can not clearly be seen from the Redfield
ratio. Follow the weighted mean.

Posted by nlange@geomar.de on 2018-08-17 10:03:46 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021, v2.2022, v2.2023

74DI20120731 - nitrate

The crossover results vary rather strongly. Nonetheless, data seems accurate as
the weighted mean suggests, too. Note that 58JH1997 did not receive a full 2nd
QC. Further, 316N1981 and 316N1996 are not trustworthy as well, as the stations
are too far apart. All in all maintain.

Posted by nlange@geomar.de on 2018-08-17 10:03:12 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021, v2.2022, v2.2023

74DI20120731 - alkalinity

All but two offsets are within the acceptable range. The crossovers cover nicely
the entire range of the stations. One rather low profile is striking out.
However, it is not possible to proof that it is off (or more accurate than the
others). Maintain.

Posted by nlange@geomar.de on 2018-08-17 10:02:23 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021, v2.2022, v2.2023

74DI20120731 - tco2

Given the typical temporal trend in this data it is almost impossible to suggest
a funded adjustment with the youngest crossover being from 2003.

Posted by nlange@geomar.de on 2018-08-17 10:01:39 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021, v2.2022, v2.2023

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