Cruise: 29AH20090725 (dataset:GLODAPv2.2021) Data product: GLODAPv2.2021, v2.2022, v2.2023 Successor: GLODAPv3
Synonyms (including errata!) for this cruise: 29AH20090725; 29AH20090725
IMPORTANT information for GLODAP Reference Group Editors: This adjustment version is immutable and published in GLODAPv2.2021! Click here to switch to new version (GLODAPv2.2021)
Please wait while loading list of related files

| Filename: | Comment: | Action | |
|---|---|---|---|
| co2_comparison_29AH20090725_unadj.png | View | ||
| diffo.png | View | ||

Plot/Data files re. Parameter(s) (select parameter on left side to view!):
alkalinity:15
cruise:2
nitrate:17
oxygen:13
ph:11
phosphate:10
salinity:12
silicate:18


| Filename: | Comment: | Action | |
|---|---|---|---|
| 06M220060523_Xover.png | [autogenerated from RC_Nico/salinity!] |
View | |
| 29AH20120623_Xover.png | [autogenerated from RC_Nico/salinity!] |
View | |
| 29HE20130320_Xover.png | [autogenerated from RC_Nico/salinity!] |
View | |
| 31AN19810612_Xover.png | [autogenerated from RC_Nico/salinity!] |
View | |
| 32OC19880723_Xover.png | [autogenerated from RC_Nico/salinity!] |
View | |
| 33MW19930704_Xover.png | [autogenerated from RC_Nico/salinity!] |
View | |
| 33RO20130803_Xover.png | [autogenerated from RC_Nico/salinity!] |
View | |
| 35LU19890509_Xover.png | [autogenerated from RC_Nico/salinity!] |
View | |
| 35PK20140515_Xover.png | [autogenerated from RC_Nico/salinity!] |
View | |
| 35TH20100608_Xover.png | [autogenerated from RC_Nico/salinity!] |
View | |
| 74AB20050501_Xover.png | [autogenerated from RC_Nico/salinity!] |
View | |
| Xresults.png | [autogenerated from RC_Nico/salinity!] |
View | |

View comment(s) (filtered by salinity in subject)
GLODAPv3 release: autogenerated salinity update for 29AH20090725
GLODAPv3 release: salinity update of 29AH20090725 based on salinity_offset:
0.0000; inversion: 0.0000; inversion_full: -0.0010; preadjustment: 0;
offsets_raw: 0.0005; offsets_preadj: 0.0003; offsets_preadj_u: 0.0010;
offsets_post: 0.0006; offsets_post_u: 0.0009; offsets_post_rt: 0.0009;
numberofxovers: 55; trends_pre: 0.0000; trends_adj: 0.0000.
Posted by nlange@geomar.de on 2026-08-04 17:11:39 UTC for data product: GLODAPv3
29AH20090725 - salinity
Maintain.
Posted by nlange@geomar.de on 2021-04-01 12:36:00 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023




View comment(s) (filtered by tco2 in subject)
GLODAPv3 release: autogenerated tco2 update for 29AH20090725
GLODAPv3 release: tco2 update of 29AH20090725 based on tco2_offset: -999.0;
inversion: NaN; inversion_full: NaN; preadjustment: NaN; offsets_raw: NaN;
offsets_preadj: NaN; offsets_preadj_u: NaN; offsets_post: NaN; offsets_post_u:
NaN; offsets_post_rt: NaN; numberofxovers: NaN; trends_pre: NaN; trends_adj:
NaN.
Posted by nlange@geomar.de on 2026-08-04 17:12:10 UTC for data product: GLODAPv3

| Filename: | Comment: | Action | |
|---|---|---|---|
| 06M220060523_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 06MT19960613_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 29AH20120623_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 29HE19980730_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 29HE20130320_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 316N19810401_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 33MW19930704_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 33RO20030604_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 33RO20130803_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 35A320010203_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 35LU19890509_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 35PK20140515_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 35TH20100608_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 74DI19980423_Xover.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| Xresults.png | [autogenerated from RC_Nico/alkalinity!] |
View | |

View comment(s) (filtered by alkalinity in subject)
GLODAPv3 release: autogenerated alkalinity update for 29AH20090725
GLODAPv3 release: alkalinity update of 29AH20090725 based on alkalinity_offset:
4.4; inversion: 4.4; inversion_full: 4.4; preadjustment: 0; offsets_raw: -3.6;
offsets_preadj: -3.6; offsets_preadj_u: 1.0; offsets_post: -0.0; offsets_post_u:
0.8; offsets_post_rt: -0.1; numberofxovers: 45; trends_pre: 0.0; trends_adj:
0.0.
Posted by nlange@geomar.de on 2026-08-04 13:46:24 UTC for data product: GLODAPv3
29AH20090725 - alkalinity
Ignoring the most easterly crossovers (i.e. near the coast) the crossovers
actually indicate an OK accuracy with quite variable offsets. Hence, don't put
too much emphasis on the total weighted mean and maintain.
Posted by nlange@geomar.de on 2021-04-01 12:36:10 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023

| Filename: | Comment: | Action | |
|---|---|---|---|
| 06M220060523_Xover.png | [autogenerated from RC_Nico/ph!] |
View | |
| 29AH20110128_Xover.png | [autogenerated from RC_Nico/ph!] |
View | |
| 29AH20120623_Xover.png | [autogenerated from RC_Nico/ph!] |
View | |
| 29HE20130320_Xover.png | [autogenerated from RC_Nico/ph!] |
View | |
| 33MW19930704_Xover.png | [autogenerated from RC_Nico/ph!] |
View | |
| 33RO20130803_Xover.png | [autogenerated from RC_Nico/ph!] |
View | |
| 35A320010203_Xover.png | [autogenerated from RC_Nico/ph!] |
View | |
| 35PK20140515_Xover.png | [autogenerated from RC_Nico/ph!] |
View | |
| 35TH20080610_Xover.png | [autogenerated from RC_Nico/ph!] |
View | |
| 35TH20100608_Xover.png | [autogenerated from RC_Nico/ph!] |
View | |
| Xresults.png | [autogenerated from RC_Nico/ph!] |
View | |

View comment(s) (filtered by ph in subject)
GLODAPv3 release: converted value for phosphate_offset from percent to factor for 29AH20090725[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for phosphate_offset from
percent to factor: 0.976.
Posted by nlange@geomar.de on 2026-08-05 16:37:41 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated phosphate update for 29AH20090725
GLODAPv3 release: phosphate update of 29AH20090725 based on phosphate_offset:
-2.4; inversion: -2.4; inversion_full: -2.7; preadjustment: 0; offsets_raw: 2.8;
offsets_preadj: 2.7; offsets_preadj_u: 0.6; offsets_post: -0.0; offsets_post_u:
0.4; offsets_post_rt: 0.2; numberofxovers: 29; trends_pre: 0.0; trends_adj: 0.0.
Posted by nlange@geomar.de on 2026-08-04 17:11:26 UTC for data product: GLODAPv3
29AH20090725 - phosphate
Difficult decision... high standard deviations of the weighted mean offsets make
it hard to suggest a 3% downward adjustment. Also, note that all OVIDE have
received rel. high (15%) upward adjustments themselves… However, apart from a
good fit with TH2008 all crs indicate too high concentrations of roughly 3%.
Adjust downward.
Posted by nlange@geomar.de on 2021-04-01 12:36:50 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023
29AH20090725 - ph
Maintain.
Posted by nlange@geomar.de on 2021-04-01 12:36:17 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023
29AH20090725 - ph
Maintain.
Posted by nlange@geomar.de on 2021-04-01 12:36:17 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023



| Filename: | Comment: | Action | |
|---|---|---|---|
| 06M220060523_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 06MT19960613_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 29AH20110128_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 29AH20120623_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 29HE20130320_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 31AN19810612_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 32OC19880723_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 33MW19930704_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 33RO20130803_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 35PK20140515_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 35TH20040604_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 35TH20100608_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 74AB20050501_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 74DI19970807_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 74DI19980423_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 90CT19930911_Xover.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| Xresults.png | [autogenerated from RC_Nico/nitrate!] |
View | |

View comment(s) (filtered by nitrate in subject)
GLODAPv3 release: converted value for nitrate_offset from percent to factor for 29AH20090725[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for nitrate_offset from percent
to factor: -777.0.
Posted by nlange@geomar.de on 2026-08-05 16:37:17 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated nitrate update for 29AH20090725
GLODAPv3 release: nitrate update of 29AH20090725 based on nitrate_offset:
-777.0; inversion: NaN; inversion_full: NaN; preadjustment: NaN; offsets_raw:
NaN; offsets_preadj: NaN; offsets_preadj_u: NaN; offsets_post: NaN;
offsets_post_u: NaN; offsets_post_rt: NaN; numberofxovers: NaN; trends_pre: NaN;
trends_adj: NaN.
Posted by nlange@geomar.de on 2026-08-04 17:10:59 UTC for data product: GLODAPv3
29AH20090725 - nitrate
Very likely that the concentrations are too high (best proof offshore). However,
most striking is that the data are very spready which make bias detection very
difficult. All in all not enough evidence for a roughly 3% adjustment. Maintain
with doubts.
Posted by nlange@geomar.de on 2021-04-01 12:36:35 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023

| Filename: | Comment: | Action | |
|---|---|---|---|
| 06M220060523_Xover.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 29AH20120623_Xover.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 29AH20160617_Xover.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 31AN19810612_Xover.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 33RO20130803_Xover.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 35LU19890509_Xover.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 35TH20080610_Xover.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 35TH20100608_Xover.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 74AB20050501_Xover.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| Xresults.png | [autogenerated from RC_Nico/phosphate!] |
View | |

View comment(s) (filtered by phosphate in subject)
GLODAPv3 release: converted value for phosphate_offset from percent to factor for 29AH20090725[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for phosphate_offset from
percent to factor: 0.976.
Posted by nlange@geomar.de on 2026-08-05 16:37:41 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated phosphate update for 29AH20090725
GLODAPv3 release: phosphate update of 29AH20090725 based on phosphate_offset:
-2.4; inversion: -2.4; inversion_full: -2.7; preadjustment: 0; offsets_raw: 2.8;
offsets_preadj: 2.7; offsets_preadj_u: 0.6; offsets_post: -0.0; offsets_post_u:
0.4; offsets_post_rt: 0.2; numberofxovers: 29; trends_pre: 0.0; trends_adj: 0.0.
Posted by nlange@geomar.de on 2026-08-04 17:11:26 UTC for data product: GLODAPv3
29AH20090725 - phosphate
Difficult decision... high standard deviations of the weighted mean offsets make
it hard to suggest a 3% downward adjustment. Also, note that all OVIDE have
received rel. high (15%) upward adjustments themselves… However, apart from a
good fit with TH2008 all crs indicate too high concentrations of roughly 3%.
Adjust downward.
Posted by nlange@geomar.de on 2021-04-01 12:36:50 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023

| Filename: | Comment: | Action | |
|---|---|---|---|
| 06M220060523_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 29AH20120623_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 29AH20160617_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 29HE20130320_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 316N19810401_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 31AN19810612_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 32OC19880723_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 33MW19930704_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 33RO20030604_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 33RO20130803_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 35LU19890509_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 35PK20140515_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 35TH20080610_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 35TH20100608_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 74AB20050501_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 74DI19980423_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 90CT19930911_Xover.png | [autogenerated from RC_Nico/silicate!] |
View | |
| Xresults.png | [autogenerated from RC_Nico/silicate!] |
View | |

View comment(s) (filtered by silicate in subject)
GLODAPv3 release: converted value for silicate_offset from percent to factor for 29AH20090725[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for silicate_offset from percent
to factor: 0.935.
Posted by nlange@geomar.de on 2026-08-05 16:37:54 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated silicate update for 29AH20090725[1-last]
GLODAPv3 release: CORRIGENDUM - silicate update of 29AH20090725[1-last] based on
silicate_offset: -6.5; inversion: 0.5; inversion_full: 0.1; preadjustment: -7;
offsets_raw: -0.8; offsets_preadj: -0.9; offsets_preadj_u: 1.0; offsets_post:
-0.0; offsets_post_u: 0.3; offsets_post_rt: 0.0; numberofxovers: 26; trends_pre:
0.0; trends_adj: 0.0.
Posted by nlange@geomar.de on 2026-08-05 14:17:24 UTC for data product: GLODAPv3
29AH20090725 - silicate
Quite good evidence for a bias with too high concentrations. Ignoring the very
near coastal crs a 6% downward adjustment seems warranted. Adjust downward.
Posted by nlange@geomar.de on 2021-04-01 12:37:07 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023

| Filename: | Comment: | Action | |
|---|---|---|---|
| 06M220060523_Xover.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 29AH20110128_Xover.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 29AH20120623_Xover.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 29HE20130320_Xover.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 31AN19810612_Xover.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 32OC19880723_Xover.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 33MW19930704_Xover.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 33RO20130803_Xover.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 35PK20140515_Xover.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 35TH20100608_Xover.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 74DI20110715_Xover.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 90CT19930911_Xover.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| Xresults.png | [autogenerated from RC_Nico/oxygen!] |
View | |

View comment(s) (filtered by oxygen in subject)
GLODAPv3 release: converted value for oxygen_offset from percent to factor for 29AH20090725[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for oxygen_offset from percent
to factor: 1.0.
Posted by nlange@geomar.de on 2026-08-05 16:37:28 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated oxygen update for 29AH20090725
GLODAPv3 release: oxygen update of 29AH20090725 based on oxygen_offset: 0.0;
inversion: 0.0; inversion_full: -0.6; preadjustment: 0; offsets_raw: 0.2;
offsets_preadj: 0.2; offsets_preadj_u: 0.3; offsets_post: 0.4; offsets_post_u:
0.3; offsets_post_rt: 0.4; numberofxovers: 54; trends_pre: 0.0; trends_adj: 0.0.
Posted by nlange@geomar.de on 2026-08-04 17:11:12 UTC for data product: GLODAPv3
29AH20090725 - oxygen
Maintain.
Posted by nlange@geomar.de on 2021-04-01 12:37:13 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023














View 30 comment(s) (Lists all comments)
GLODAPv3 release: converted value for silicate_offset from percent to factor for 29AH20090725[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for silicate_offset from percent
to factor: 0.935.
Posted by nlange@geomar.de on 2026-08-05 16:37:54 UTC for data product: GLODAPv3
GLODAPv3 release: converted value for phosphate_offset from percent to factor for 29AH20090725[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for phosphate_offset from
percent to factor: 0.976.
Posted by nlange@geomar.de on 2026-08-05 16:37:41 UTC for data product: GLODAPv3
GLODAPv3 release: converted value for oxygen_offset from percent to factor for 29AH20090725[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for oxygen_offset from percent
to factor: 1.0.
Posted by nlange@geomar.de on 2026-08-05 16:37:28 UTC for data product: GLODAPv3
GLODAPv3 release: converted value for nitrate_offset from percent to factor for 29AH20090725[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for nitrate_offset from percent
to factor: -777.0.
Posted by nlange@geomar.de on 2026-08-05 16:37:17 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated silicate update for 29AH20090725[1-last]
GLODAPv3 release: CORRIGENDUM - silicate update of 29AH20090725[1-last] based on
silicate_offset: -6.5; inversion: 0.5; inversion_full: 0.1; preadjustment: -7;
offsets_raw: -0.8; offsets_preadj: -0.9; offsets_preadj_u: 1.0; offsets_post:
-0.0; offsets_post_u: 0.3; offsets_post_rt: 0.0; numberofxovers: 26; trends_pre:
0.0; trends_adj: 0.0.
Posted by nlange@geomar.de on 2026-08-05 14:17:24 UTC for data product: GLODAPv3
29AH20090725[1-last] GLODAPv3 release
GLODAPv3 release: silicate autogenerated adjustment parameter update for
29AH20090725 - select parameter to view annotation with specific details.
Posted by nlange@geomar.de on 2026-08-05 14:17:24 UTC for data product: GLODAPv3
GLODAPv3 release: temperature added as NEW adjustment parameter to 29AH20090725[1-last]
Automated addition of temperature as NEW parameter to 29AH20090725[1-last] based
on temperature_offset: 0.
Posted by nlange@geomar.de on 2026-08-05 14:17:11 UTC for data product: GLODAPv3
29AH20090725[1-last] GLODAPv3 release
Automated addition of temperature as NEW adjustment parameter in GLODAPv3 to
29AH20090725[1-last] - select parameter to view annotation with specific
details.
Posted by nlange@geomar.de on 2026-08-05 14:17:11 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated tco2 update for 29AH20090725
GLODAPv3 release: tco2 update of 29AH20090725 based on tco2_offset: -999.0;
inversion: NaN; inversion_full: NaN; preadjustment: NaN; offsets_raw: NaN;
offsets_preadj: NaN; offsets_preadj_u: NaN; offsets_post: NaN; offsets_post_u:
NaN; offsets_post_rt: NaN; numberofxovers: NaN; trends_pre: NaN; trends_adj:
NaN.
Posted by nlange@geomar.de on 2026-08-04 17:12:10 UTC for data product: GLODAPv3
29AH20090725 GLODAPv3 release
GLODAPv3 release: tco2 autogenerated adjustment parameter update for
29AH20090725 - select parameter to view annotation with specific details.
Posted by nlange@geomar.de on 2026-08-04 17:12:10 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated salinity update for 29AH20090725
GLODAPv3 release: salinity update of 29AH20090725 based on salinity_offset:
0.0000; inversion: 0.0000; inversion_full: -0.0010; preadjustment: 0;
offsets_raw: 0.0005; offsets_preadj: 0.0003; offsets_preadj_u: 0.0010;
offsets_post: 0.0006; offsets_post_u: 0.0009; offsets_post_rt: 0.0009;
numberofxovers: 55; trends_pre: 0.0000; trends_adj: 0.0000.
Posted by nlange@geomar.de on 2026-08-04 17:11:39 UTC for data product: GLODAPv3
29AH20090725 GLODAPv3 release
GLODAPv3 release: salinity autogenerated adjustment parameter update for
29AH20090725 - select parameter to view annotation with specific details.
Posted by nlange@geomar.de on 2026-08-04 17:11:39 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated phosphate update for 29AH20090725
GLODAPv3 release: phosphate update of 29AH20090725 based on phosphate_offset:
-2.4; inversion: -2.4; inversion_full: -2.7; preadjustment: 0; offsets_raw: 2.8;
offsets_preadj: 2.7; offsets_preadj_u: 0.6; offsets_post: -0.0; offsets_post_u:
0.4; offsets_post_rt: 0.2; numberofxovers: 29; trends_pre: 0.0; trends_adj: 0.0.
Posted by nlange@geomar.de on 2026-08-04 17:11:26 UTC for data product: GLODAPv3
29AH20090725 GLODAPv3 release
GLODAPv3 release: phosphate autogenerated adjustment parameter update for
29AH20090725 - select parameter to view annotation with specific details.
Posted by nlange@geomar.de on 2026-08-04 17:11:26 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated oxygen update for 29AH20090725
GLODAPv3 release: oxygen update of 29AH20090725 based on oxygen_offset: 0.0;
inversion: 0.0; inversion_full: -0.6; preadjustment: 0; offsets_raw: 0.2;
offsets_preadj: 0.2; offsets_preadj_u: 0.3; offsets_post: 0.4; offsets_post_u:
0.3; offsets_post_rt: 0.4; numberofxovers: 54; trends_pre: 0.0; trends_adj: 0.0.
Posted by nlange@geomar.de on 2026-08-04 17:11:12 UTC for data product: GLODAPv3
29AH20090725 GLODAPv3 release
GLODAPv3 release: oxygen autogenerated adjustment parameter update for
29AH20090725 - select parameter to view annotation with specific details.
Posted by nlange@geomar.de on 2026-08-04 17:11:12 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated nitrate update for 29AH20090725
GLODAPv3 release: nitrate update of 29AH20090725 based on nitrate_offset:
-777.0; inversion: NaN; inversion_full: NaN; preadjustment: NaN; offsets_raw:
NaN; offsets_preadj: NaN; offsets_preadj_u: NaN; offsets_post: NaN;
offsets_post_u: NaN; offsets_post_rt: NaN; numberofxovers: NaN; trends_pre: NaN;
trends_adj: NaN.
Posted by nlange@geomar.de on 2026-08-04 17:10:59 UTC for data product: GLODAPv3
29AH20090725 GLODAPv3 release
GLODAPv3 release: nitrate autogenerated adjustment parameter update for
29AH20090725 - select parameter to view annotation with specific details.
Posted by nlange@geomar.de on 2026-08-04 17:10:59 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated alkalinity update for 29AH20090725
GLODAPv3 release: alkalinity update of 29AH20090725 based on alkalinity_offset:
4.4; inversion: 4.4; inversion_full: 4.4; preadjustment: 0; offsets_raw: -3.6;
offsets_preadj: -3.6; offsets_preadj_u: 1.0; offsets_post: -0.0; offsets_post_u:
0.8; offsets_post_rt: -0.1; numberofxovers: 45; trends_pre: 0.0; trends_adj:
0.0.
Posted by nlange@geomar.de on 2026-08-04 13:46:24 UTC for data product: GLODAPv3
29AH20090725 GLODAPv3 release
GLODAPv3 release: alkalinity autogenerated adjustment parameter update for
29AH20090725 - select parameter to view annotation with specific details.
Posted by nlange@geomar.de on 2026-08-04 13:46:24 UTC for data product: GLODAPv3
29AH20090725
The nitrate profiles are not very precise and show lots of scatter compared to
GLODAPv2.2020 cruises. Appears to be some offset, but not enough evidence so we
decided to not include these data in the product.
Posted by siv.lauvset@uib.no on 2021-04-22 15:35:11 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023
29AH20090725 - oxygen
Maintain.
Posted by nlange@geomar.de on 2021-04-01 12:37:13 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023
29AH20090725 - silicate
Quite good evidence for a bias with too high concentrations. Ignoring the very
near coastal crs a 6% downward adjustment seems warranted. Adjust downward.
Posted by nlange@geomar.de on 2021-04-01 12:37:07 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023
29AH20090725 - phosphate
Difficult decision... high standard deviations of the weighted mean offsets make
it hard to suggest a 3% downward adjustment. Also, note that all OVIDE have
received rel. high (15%) upward adjustments themselves… However, apart from a
good fit with TH2008 all crs indicate too high concentrations of roughly 3%.
Adjust downward.
Posted by nlange@geomar.de on 2021-04-01 12:36:50 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023
29AH20090725 - nitrate
Very likely that the concentrations are too high (best proof offshore). However,
most striking is that the data are very spready which make bias detection very
difficult. All in all not enough evidence for a roughly 3% adjustment. Maintain
with doubts.
Posted by nlange@geomar.de on 2021-04-01 12:36:35 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023
29AH20090725 - ph
Maintain.
Posted by nlange@geomar.de on 2021-04-01 12:36:17 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023
29AH20090725 - ph
Maintain.
Posted by nlange@geomar.de on 2021-04-01 12:36:17 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023
29AH20090725 - alkalinity
Ignoring the most easterly crossovers (i.e. near the coast) the crossovers
actually indicate an OK accuracy with quite variable offsets. Hence, don't put
too much emphasis on the total weighted mean and maintain.
Posted by nlange@geomar.de on 2021-04-01 12:36:10 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023
29AH20090725 - salinity
Maintain.
Posted by nlange@geomar.de on 2021-04-01 12:36:00 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023
29AH20090725 - initialized
original: 29AH20090725; Sarmiento de Gamboa; Miguel Gilcoto ; NN
Posted by nlange@geomar.de on 2021-03-29 16:01:51 UTC for data product: GLODAPv2.2021, v2.2022, v2.2023
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