GLODAPv3 Adjustments

Stations:	[1-last]
The selected Calculated Carbon Parameter has been dismissed in October 2017! Legacy values will be exported as is and displayed in red with subscript "c", e.g. -0.123456_c! No data available? Insert -999 No suggestion for adjustment possible? Insert -888 To calibrate CTDsal use: CTDsal_calibrated = (CTDsal - CTDsal_intercept) / CTDsal_slope To calibrate CTDoxy use: CTDoxy_calibrated = (CTDoxy - CTDoxy_intercept) / CTDoxy_slope
Insert your commit message below explaining your change(s) before you save…
Salinity [+]
CTD-Sal. [+] slope \| intercept \| action [ID]	/ - #
TCO₂ [+]
Alkalinity [+]
Nitrate [x]
Phosphate [x]
Silicate [x]
Oxygen [x]
CTD-Oxyg. [x] slope \| intercept \| action [ID]	/ - #
Temp. [+]
CFC12 [x]
CFC11 [x]
CFC113 [x]
CCl4 [x]
C13 [+]
SF6 [x]

Cruise Info

Annotations for this cruise:

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Files for Adjustment Plot files re. Cruise: - no files! -

Data files re. Cruise: - no files! -

Plot/Data files re. Parameter(s) (select parameter on left side to view!):
nitrate:4 oxygen:4 phosphate:4 salinity:4 silicate:1

Plot files re. Cluster: - no files! -

Annotations re. this cruise/adjustment in GLODAPv3

View 29 annotation(s) (Lists all annotations)

GLODAPv3 release: converted value for silicate_offset from percent to factor for 325020131025[1-last]

GLODAPv3 release: CORRIGENDUM - converted value for silicate_offset from percent
to factor: 0.963.

Posted by nlange@geomar.de on 2026-08-05 16:37:56 UTC for data product: GLODAPv3

GLODAPv3 release: converted value for phosphate_offset from percent to factor for 325020131025[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 16:37:43 UTC for data product: GLODAPv3

GLODAPv3 release: converted value for oxygen_offset from percent to factor for 325020131025[1-last]

GLODAPv3 release: CORRIGENDUM - converted value for oxygen_offset from percent
to factor: -888.0.

Posted by nlange@geomar.de on 2026-08-05 16:37:30 UTC for data product: GLODAPv3

GLODAPv3 release: converted value for nitrate_offset from percent to factor for 325020131025[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 16:37:18 UTC for data product: GLODAPv3

GLODAPv3 release: autogenerated silicate update for 325020131025[1-last]

GLODAPv3 release: CORRIGENDUM - silicate update of 325020131025[1-last] based on
silicate_offset: -3.7; inversion: 2.3; inversion_full: 2.4; preadjustment: -6;
offsets_raw: -2.9; offsets_preadj: -2.6; offsets_preadj_u: 2.0; offsets_post:
0.0; offsets_post_u: 0.8; offsets_post_rt: -0.6; numberofxovers: 3; trends_pre:
0.0; trends_adj: 0.0.

Posted by nlange@geomar.de on 2026-08-05 14:17:26 UTC for data product: GLODAPv3

325020131025[1-last] GLODAPv3 release

GLODAPv3 release: silicate autogenerated adjustment parameter update for
325020131025 - select parameter to view annotation with specific details.

Posted by nlange@geomar.de on 2026-08-05 14:17:26 UTC for data product: GLODAPv3

GLODAPv3 release: temperature added as NEW adjustment parameter to 325020131025[1-last]

Automated addition of temperature as NEW parameter to 325020131025[1-last] based
on temperature_offset: 0.

Posted by nlange@geomar.de on 2026-08-05 14:17:13 UTC for data product: GLODAPv3

325020131025[1-last] GLODAPv3 release

Automated addition of temperature as NEW adjustment parameter in GLODAPv3 to
325020131025[1-last] - select parameter to view annotation with specific
details.

Posted by nlange@geomar.de on 2026-08-05 14:17:13 UTC for data product: GLODAPv3

GLODAPv3 release: autogenerated tco2 update for 325020131025

GLODAPv3 release: tco2 update of 325020131025 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 17:12:12 UTC for data product: GLODAPv3

325020131025 GLODAPv3 release

GLODAPv3 release: tco2 autogenerated adjustment parameter update for
325020131025 - select parameter to view annotation with specific details.

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

GLODAPv3 release: autogenerated salinity update for 325020131025

GLODAPv3 release: salinity update of 325020131025 based on salinity_offset:
0.0000; inversion: 0.0000; inversion_full: -0.0009; preadjustment: 0;
offsets_raw: 0.0019; offsets_preadj: 0.0027; offsets_preadj_u: 0.0039;
offsets_post: 0.0027; offsets_post_u: 0.0039; offsets_post_rt: 0.0011;
numberofxovers: 3; trends_pre: 0.0000; trends_adj: 0.0000.

Posted by nlange@geomar.de on 2026-08-04 17:11:42 UTC for data product: GLODAPv3

325020131025 GLODAPv3 release

GLODAPv3 release: salinity autogenerated adjustment parameter update for
325020131025 - select parameter to view annotation with specific details.

Posted by nlange@geomar.de on 2026-08-04 17:11:42 UTC for data product: GLODAPv3

GLODAPv3 release: autogenerated phosphate update for 325020131025

GLODAPv3 release: phosphate update of 325020131025 based on phosphate_offset:
-2.4; inversion: -2.4; inversion_full: -2.6; preadjustment: 0; offsets_raw: 2.6;
offsets_preadj: 2.4; offsets_preadj_u: 0.2; offsets_post: -0.0; offsets_post_u:
0.2; offsets_post_rt: 0.1; numberofxovers: 3; trends_pre: 0.0; trends_adj: 0.0.

Posted by nlange@geomar.de on 2026-08-04 17:11:28 UTC for data product: GLODAPv3

325020131025 GLODAPv3 release

GLODAPv3 release: phosphate autogenerated adjustment parameter update for
325020131025 - select parameter to view annotation with specific details.

Posted by nlange@geomar.de on 2026-08-04 17:11:28 UTC for data product: GLODAPv3

GLODAPv3 release: autogenerated oxygen update for 325020131025

GLODAPv3 release: oxygen update of 325020131025 based on oxygen_offset: -888.0;
inversion: 0.0; inversion_full: 0.1; preadjustment: 0; offsets_raw: -0.3;
offsets_preadj: -0.3; offsets_preadj_u: 1.6; offsets_post: -0.3; offsets_post_u:
1.6; offsets_post_rt: -0.4; numberofxovers: 3; trends_pre: 0.0; trends_adj: 0.0.

Posted by nlange@geomar.de on 2026-08-04 17:11:14 UTC for data product: GLODAPv3

325020131025 GLODAPv3 release

GLODAPv3 release: oxygen autogenerated adjustment parameter update for
325020131025 - select parameter to view annotation with specific details.

Posted by nlange@geomar.de on 2026-08-04 17:11:14 UTC for data product: GLODAPv3

GLODAPv3 release: autogenerated nitrate update for 325020131025

GLODAPv3 release: nitrate update of 325020131025 based on nitrate_offset: 0.0;
inversion: 0.0; inversion_full: 0.2; preadjustment: 0; offsets_raw: 0.4;
offsets_preadj: 0.3; offsets_preadj_u: 0.1; offsets_post: 0.3; offsets_post_u:
0.1; offsets_post_rt: 0.3; numberofxovers: 3; trends_pre: 0.0; trends_adj: 0.0.

Posted by nlange@geomar.de on 2026-08-04 17:11:01 UTC for data product: GLODAPv3

325020131025 GLODAPv3 release

GLODAPv3 release: nitrate autogenerated adjustment parameter update for
325020131025 - select parameter to view annotation with specific details.

Posted by nlange@geomar.de on 2026-08-04 17:11:01 UTC for data product: GLODAPv3

GLODAPv3 release: autogenerated alkalinity update for 325020131025

GLODAPv3 release: alkalinity update of 325020131025 based on alkalinity_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 13:46:26 UTC for data product: GLODAPv3

325020131025 GLODAPv3 release

GLODAPv3 release: alkalinity autogenerated adjustment parameter update for
325020131025 - select parameter to view annotation with specific details.

Posted by nlange@geomar.de on 2026-08-04 13:46:26 UTC for data product: GLODAPv3

325020131025 - silicate

Siicate was off vs. CRM but NOT corrected.
Adjust

Posted by ttanhua@geomar.de on 2018-09-26 21:27:14 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

325020131025 - phosphate

Susan Becker indicated that nutrient data was not corrected to CRMs. Had they
been corrected the data would (likely) have been correct (need to check cruise
report).
Adjust

Posted by ttanhua@geomar.de on 2018-09-26 21:26:48 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

325020131025 - oxygen

The only two crossovers, as well as a comparison of the depth average vs the
depth average of the surrounding cruises of GLODAPv2 (143.43 μmol kg−1 vs 150.85
μmol kg−1), indicate too low concentrations. The MLR analysis (based on 494
samples) does support that the concentrations are too low in general but there
is no consensus on the magnitude of the bias. Thus, given this uncertainty, no
robust adjustment can be assigned.

Posted by nlange@geomar.de on 2018-08-21 14:30:31 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

325020131025 - silicate

The only two crossovers, as well as a comparison of the depth average vs the
depth average of the surrounding cruises of GLODAPv2 (133.23 μmol kg−1 vs 122.74
μmol kg−1), indicate too high concentrations. The MLR analysis (based on 501
samples) supports these findings nicely, even though the range is quite large
and outliers are present. Adjust downward according to the median of the MLR
offset.

Posted by nlange@geomar.de on 2018-08-21 14:23:11 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

325020131025 - phosphate

The only two crossovers, as well as a comparison of the depth average vs the
depth average of the surrounding cruises of GLODAPv2 (2.62 μmol kg−1 vs 2.51
μmol kg−1), indicate too high concentrations. The MLR analysis (based on 501
samples) supports these findings nicely, even though the range is quite large
and outliers are present. Adjust downward according to the median of the MLR
offset.

Posted by nlange@geomar.de on 2018-08-21 14:07:32 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

325020131025 - nitrate

The only two crossovers, as well as a comparison of the depth average vs the
depth average of surrounding cruises of GLODAPv2 (36.29 μmol kg−1 vs 35.89 μmol
kg−1), indicate acceptable accuracy. Additional MLR analyses are not very
informative for nitrate as the predictor variables are likely to be offset
themselves (PO4, Si, O2). Maintain.

Posted by nlange@geomar.de on 2018-08-21 14:00:56 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

325020131025 - salinity

The only two crossovers, as well as a comparison of the depth average vs the
depth average of surrounding cruises of GLODAPv2, indicate good accuracy.
Maintain.

Posted by nlange@geomar.de on 2018-08-21 13:54:41 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

325020131025 - cfc11

A consistent undersaturation for all stations is visible. Adjust upward
following the total mean (0.87).

Posted by nlange@geomar.de on 2018-06-05 11:50:34 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

325020131025 - cfc12

A consistent undersaturation for all stations is visible. Adjust upward
following the total mean (0.85).

Posted by nlange@geomar.de on 2018-06-05 11:50:25 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

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ReadMe file(s) for this cruise

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Files and Annotations for salinity

Files

Plot files re. Salinity
[+]:

Filename:	Comment:	Action…
318M19940327_325020131025_salinity__Xover_SAL.png	[GLODAPv3 release: autogenerated from RC_Nico/salinity for: 325020131025[1-last]	View
31WT19910716_325020131025_salinity__Xover_SAL.png	[GLODAPv3 release: autogenerated from RC_Nico/salinity for: 325020131025[1-last]	View
325020131025_49NZ20090410_salinity__Xover_SAL.png	[GLODAPv3 release: autogenerated from RC_Nico/salinity for: 325020131025[1-last]	View
325020131025_salinity__SAL.png	[GLODAPv3 release: autogenerated from RC_Nico/salinity for: 325020131025[1-last]	View

Data files re. Salinity
[+]: - no files! -

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Files and Annotations for ctd_salinity

Files

Plot files re. CTD-Sal. [+]
slope | intercept | action [ID]: - no files! -

Data files re. CTD-Sal. [+]
slope | intercept | action [ID]: - no files! -

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Files and Annotations for tco2

Files

Plot files re. TCO₂
[+]: - no files! -

Data files re. TCO₂
[+]: - no files! -

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Files and Annotations for alkalinity

Files

Plot files re. Alkalinity
[+]: - no files! -

Data files re. Alkalinity
[+]: - no files! -

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Files and Annotations for nitrate

Files

Plot files re. Nitrate
[x]:

Filename:	Comment:	Action…
318M19940327_325020131025_nitrate__Xover_NO3.png	[GLODAPv3 release: autogenerated from RC_Nico/nitrate for: 325020131025[1-last]	View
31WT19910716_325020131025_nitrate__Xover_NO3.png	[GLODAPv3 release: autogenerated from RC_Nico/nitrate for: 325020131025[1-last]	View
325020131025_49NZ20090410_nitrate__Xover_NO3.png	[GLODAPv3 release: autogenerated from RC_Nico/nitrate for: 325020131025[1-last]	View
325020131025_nitrate__NO3.png	[GLODAPv3 release: autogenerated from RC_Nico/nitrate for: 325020131025[1-last]	View

Data files re. Nitrate
[x]: - no files! -

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Files and Annotations for phosphate

Files

Plot files re. Phosphate
[x]:

Filename:	Comment:	Action…
318M19940327_325020131025_phosphate__Xover_PO4.png	[GLODAPv3 release: autogenerated from RC_Nico/phosphate for: 325020131025[1-last]	View
31WT19910716_325020131025_phosphate__Xover_PO4.png	[GLODAPv3 release: autogenerated from RC_Nico/phosphate for: 325020131025[1-last]	View
325020131025_49NZ20090410_phosphate__Xover_PO4.png	[GLODAPv3 release: autogenerated from RC_Nico/phosphate for: 325020131025[1-last]	View
325020131025_phosphate__PO4.png	[GLODAPv3 release: autogenerated from RC_Nico/phosphate for: 325020131025[1-last]	View

Data files re. Phosphate
[x]: - no files! -

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Files and Annotations for silicate

Files

Plot files re. Silicate
[x]:

Filename:	Comment:	Action…
325020131025_silicate__SIL.png	[GLODAPv3 release: autogenerated from RC_Nico/silicate for: 325020131025[1-last]	View

Data files re. Silicate
[x]: - no files! -

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Files and Annotations for oxygen

Files

Plot files re. Oxygen
[x]:

Filename:	Comment:	Action…
318M19940327_325020131025_oxygen__Xover_O2.png	[GLODAPv3 release: autogenerated from RC_Nico/oxygen for: 325020131025[1-last]	View
31WT19910716_325020131025_oxygen__Xover_O2.png	[GLODAPv3 release: autogenerated from RC_Nico/oxygen for: 325020131025[1-last]	View
325020131025_49NZ20090410_oxygen__Xover_O2.png	[GLODAPv3 release: autogenerated from RC_Nico/oxygen for: 325020131025[1-last]	View
325020131025_oxygen__O2.png	[GLODAPv3 release: autogenerated from RC_Nico/oxygen for: 325020131025[1-last]	View

Data files re. Oxygen
[x]: - no files! -

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Files and Annotations for ctd_oxygen

Files

Plot files re. CTD-Oxyg. [x]
slope | intercept | action [ID]: - no files! -

Data files re. CTD-Oxyg. [x]
slope | intercept | action [ID]: - no files! -

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Files and Annotations for temperature

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Plot files re. Temp.
[+]: - no files! -

Data files re. Temp.
[+]: - no files! -

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Files and Annotations for cfc12

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[x]: - no files! -

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[x]: - no files! -

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Files and Annotations for cfc11

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Plot files re. CFC11
[x]: - no files! -

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[x]: - no files! -

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Files and Annotations for cfc113

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Plot files re. CFC113
[x]: - no files! -

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[x]: - no files! -

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Files and Annotations for ccl4

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[x]: - no files! -

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[x]: - no files! -

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Files and Annotations for c13

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[+]: - no files! -

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[+]: - no files! -

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Files and Annotations for sf6

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Plot files re. SF6
[x]: - no files! -

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[x]: - no files! -

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Dataproduct: GLODAPv3 :: Adjustments

Cruise: 325020131025 (dataset:GLODAPv2.2019) Data product: GLODAPv3 Predecessor: GLODAPv2.2022, v2.2023

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GLODAPv3 release: converted value for silicate_offset from percent to factor for 325020131025[1-last]

GLODAPv3 release: converted value for phosphate_offset from percent to factor for 325020131025[1-last]

GLODAPv3 release: converted value for oxygen_offset from percent to factor for 325020131025[1-last]

GLODAPv3 release: converted value for nitrate_offset from percent to factor for 325020131025[1-last]

GLODAPv3 release: autogenerated silicate update for 325020131025[1-last]

325020131025[1-last] GLODAPv3 release

GLODAPv3 release: temperature added as NEW adjustment parameter to 325020131025[1-last]

325020131025[1-last] GLODAPv3 release

GLODAPv3 release: autogenerated tco2 update for 325020131025

325020131025 GLODAPv3 release

GLODAPv3 release: autogenerated salinity update for 325020131025

325020131025 GLODAPv3 release

GLODAPv3 release: autogenerated phosphate update for 325020131025

325020131025 GLODAPv3 release

GLODAPv3 release: autogenerated oxygen update for 325020131025

325020131025 GLODAPv3 release

GLODAPv3 release: autogenerated nitrate update for 325020131025

325020131025 GLODAPv3 release

GLODAPv3 release: autogenerated alkalinity update for 325020131025

325020131025 GLODAPv3 release

325020131025 - silicate

325020131025 - phosphate

325020131025 - oxygen

325020131025 - silicate

325020131025 - phosphate

325020131025 - nitrate

325020131025 - salinity

325020131025 - cfc11

325020131025 - cfc12

GLODAPv3 release: autogenerated salinity update for 325020131025

325020131025 - salinity

GLODAPv3 release: autogenerated tco2 update for 325020131025

GLODAPv3 release: autogenerated alkalinity update for 325020131025

GLODAPv3 release: converted value for nitrate_offset from percent to factor for 325020131025[1-last]

GLODAPv3 release: autogenerated nitrate update for 325020131025

325020131025 - nitrate

GLODAPv3 release: converted value for phosphate_offset from percent to factor for 325020131025[1-last]

GLODAPv3 release: autogenerated phosphate update for 325020131025

325020131025 - phosphate

325020131025 - phosphate

GLODAPv3 release: converted value for silicate_offset from percent to factor for 325020131025[1-last]

GLODAPv3 release: autogenerated silicate update for 325020131025[1-last]

325020131025 - silicate

325020131025 - silicate

GLODAPv3 release: converted value for oxygen_offset from percent to factor for 325020131025[1-last]

GLODAPv3 release: autogenerated oxygen update for 325020131025

325020131025 - oxygen

GLODAPv3 release: temperature added as NEW adjustment parameter to 325020131025[1-last]

325020131025 - cfc12

325020131025 - cfc11