Cruise: 18MF20120601 (dataset:GLODAPv2.2019) Data product: GLODAPv2.2019, v2.2020, v2.2021 Successor: GLODAPv2.2022, v2.2023
Synonyms (including errata!) for this cruise: MLB2012001; 18MF20120601; alias: AR07W.2012; 2012001, MLB2012001, 18MF12001
IMPORTANT information for GLODAP Reference Group Editors: This adjustment version is immutable and published in GLODAPv2.2019! Click here to switch to new version (GLODAPv2.2019)
Please wait while loading list of related files

| Filename: | Comment: | Action | |
|---|---|---|---|
| Redfield.png | View | ||

Plot/Data files re. Parameter(s) (select parameter on left side to view!):
alkalinity:13
cfc12:2
cruise:1
nitrate:12
oxygen:13
ph:12
phosphate:12
salinity:11
silicate:13
tco2:10


| Filename: | Comment: | Action | |
|---|---|---|---|
| 06MM20090714_Xover.png | [autogenerated from RC_Nico/salinity!] |
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| 06MT20030723_Xover.png | [autogenerated from RC_Nico/salinity!] |
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| 06MT20030831_Xover.png | [autogenerated from RC_Nico/salinity!] |
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| 18HU20060524_Xover.png | [autogenerated from RC_Nico/salinity!] |
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| 18HU20070510_Xover.png | [autogenerated from RC_Nico/salinity!] |
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| 18HU20080520_Xover.png | [autogenerated from RC_Nico/salinity!] |
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| 18HU20090517_Xover.png | [autogenerated from RC_Nico/salinity!] |
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| 18HU20100513_Xover.png | [autogenerated from RC_Nico/salinity!] |
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| 18HU20110506_Xover.png | [autogenerated from RC_Nico/salinity!] |
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| 74DI20080820_Xover.png | [autogenerated from RC_Nico/salinity!] |
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| Xresults.png | [autogenerated from RC_Nico/salinity!] |
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View comment(s) (filtered by salinity in subject)
GLODAPv3 release: autogenerated salinity update for 18MF20120601
GLODAPv3 release: salinity update of 18MF20120601 based on salinity_offset:
0.0000; inversion: 0.0000; inversion_full: 0.0019; preadjustment: 0;
offsets_raw: 0.0027; offsets_preadj: 0.0003; offsets_preadj_u: 0.0013;
offsets_post: -0.0020; offsets_post_u: 0.0009; offsets_post_rt: 0.0002;
numberofxovers: 40; trends_pre: 0.0007; trends_adj: 0.0005.
Posted by nlange@geomar.de on 2026-08-04 17:11:39 UTC for data product: GLODAPv3
18MF20120601 - salinity
Fits good to recent cruises (2007 - 2011). No evidence for an Offset. Maintain.
Posted by nlange@geomar.de on 2018-05-25 10:29:09 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021



| Filename: | Comment: | Action | |
|---|---|---|---|
| 06MT19970707_Xover_norm.png | [autogenerated from RC_Nico/tco2!] |
View | |
| 18HU19970509_Xover_norm.png | [autogenerated from RC_Nico/tco2!] |
View | |
| 18HU20060524_Xover_norm.png | [autogenerated from RC_Nico/tco2!] |
View | |
| 18HU20070510_Xover_norm.png | [autogenerated from RC_Nico/tco2!] |
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| 18HU20080520_Xover_norm.png | [autogenerated from RC_Nico/tco2!] |
View | |
| 18HU20090517_Xover_norm.png | [autogenerated from RC_Nico/tco2!] |
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| 18HU20100513_Xover_norm.png | [autogenerated from RC_Nico/tco2!] |
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| 18HU20110506_Xover_norm.png | [autogenerated from RC_Nico/tco2!] |
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| 74DI20080820_Xover_norm.png | [autogenerated from RC_Nico/tco2!] |
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| Xresults_norm.png | [autogenerated from RC_Nico/tco2!] |
View | |

View comment(s) (filtered by tco2 in subject)
GLODAPv3 release: autogenerated tco2 update for 18MF20120601
GLODAPv3 release: tco2 update of 18MF20120601 based on tco2_offset: 0.0;
inversion: 0.0; inversion_full: 0.6; preadjustment: 0; offsets_raw: 3.5;
offsets_preadj: -0.3; offsets_preadj_u: 0.3; offsets_post: -0.5; offsets_post_u:
0.2; offsets_post_rt: 3.1; numberofxovers: 27; trends_pre: 0.7; trends_adj: 0.6.
Posted by nlange@geomar.de on 2026-08-04 17:12:09 UTC for data product: GLODAPv3
18MF20120601 - tco2
Analysis performed for normalized tco2 (Frijs et al. 2003).Temporal trend
towards higher concentrations visible. All crossovers (except one) younger 2004
show offsets within the acceptable range. Fits to crossover results for recent
HU Cruises. Maintain.
Posted by nlange@geomar.de on 2018-05-25 10:20:37 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

| Filename: | Comment: | Action | |
|---|---|---|---|
| 06MT19970707_Xover_norm.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 06MT20030723_Xover_norm.png | [autogenerated from RC_Nico/alkalinity!] |
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| 18HU19970509_Xover_norm.png | [autogenerated from RC_Nico/alkalinity!] |
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| 18HU20030713_Xover_norm.png | [autogenerated from RC_Nico/alkalinity!] |
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| 18HU20040515_Xover_norm.png | [autogenerated from RC_Nico/alkalinity!] |
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| 18HU20050526_Xover_norm.png | [autogenerated from RC_Nico/alkalinity!] |
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| 18HU20090517_Xover_norm.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 18HU20100513_Xover_norm.png | [autogenerated from RC_Nico/alkalinity!] |
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| 18HU20110506_Xover_norm.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| 18TA20120601___alk___Xresults.pdf | Normilized Total Alkalinity with Friis et al. 2003 Normalization. Cut off for cross over = 2000m depth |
View | |
| 18TA20120601___alk___Xresults.pdf | Normilized Total Alkalinity with Friis et al. 2003 Normalization. Cut off for cross over = 2000m depth |
View | |
| 74DI20080820_Xover_norm.png | [autogenerated from RC_Nico/alkalinity!] |
View | |
| Xresults_norm.png | [autogenerated from RC_Nico/alkalinity!] |
View | |

View comment(s) (filtered by alkalinity in subject)
GLODAPv3 release: autogenerated alkalinity update for 18MF20120601
GLODAPv3 release: alkalinity update of 18MF20120601 based on alkalinity_offset:
7.4; inversion: 7.4; inversion_full: 7.1; preadjustment: 0; offsets_raw: -6.1;
offsets_preadj: -6.3; offsets_preadj_u: 1.3; offsets_post: 0.0; offsets_post_u:
0.4; offsets_post_rt: 0.4; numberofxovers: 19; trends_pre: 0.0; trends_adj: 0.0.
Posted by nlange@geomar.de on 2026-08-04 13:46:23 UTC for data product: GLODAPv3
18MF20120601 - alkalinity
Analysis performed for normalized alkalinity (Frijs et al. 2003). There is a
large scatter between the profiles - questionable precision… The majority of the
crossovers has a negative offset, but mostly within the range. Maintain.
Posted by nlange@geomar.de on 2018-05-25 10:21:50 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

| Filename: | Comment: | Action | |
|---|---|---|---|
| 06MT19970707_Xover_press.png | [autogenerated from RC_Nico/ph!] |
View | |
| 06MT20030723_Xover_press.png | [autogenerated from RC_Nico/ph!] |
View | |
| 18HU19970509_Xover_press.png | [autogenerated from RC_Nico/ph!] |
View | |
| 18HU20030713_Xover_press.png | [autogenerated from RC_Nico/ph!] |
View | |
| 18HU20040515_Xover_press.png | [autogenerated from RC_Nico/ph!] |
View | |
| 18HU20050526_Xover_press.png | [autogenerated from RC_Nico/ph!] |
View | |
| 18HU20080520_Xover_press.png | [autogenerated from RC_Nico/ph!] |
View | |
| 18HU20090517_Xover_press.png | [autogenerated from RC_Nico/ph!] |
View | |
| 18HU20100513_Xover_press.png | [autogenerated from RC_Nico/ph!] |
View | |
| 18HU20110506_Xover_press.png | [autogenerated from RC_Nico/ph!] |
View | |
| 74DI20080820_Xover_press.png | [autogenerated from RC_Nico/ph!] |
View | |
| Xresults_press.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 18MF20120601[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for phosphate_offset from
percent to factor: 0.954.
Posted by nlange@geomar.de on 2026-08-05 16:37:40 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated phosphate update for 18MF20120601
GLODAPv3 release: phosphate update of 18MF20120601 based on phosphate_offset:
-4.6; inversion: 2.4; inversion_full: 1.9; preadjustment: -7; offsets_raw: -1.8;
offsets_preadj: -1.6; offsets_preadj_u: 0.4; offsets_post: -0.0; offsets_post_u:
0.1; offsets_post_rt: -0.4; numberofxovers: 26; trends_pre: 0.0; trends_adj:
0.0.
Posted by nlange@geomar.de on 2026-08-04 17:11:25 UTC for data product: GLODAPv3
18MF20120601 - phosphate
All offsets, but one HU1996 (not Qced), show values clearly above 1 - either
nearby or above the limit of 1.04 (1.02). There is no clear trend visible and
the offsets are visible at all depths. The suggested adjustment also improves
the Redfield ratio. Adjust 5% downward.
Posted by nlange@geomar.de on 2018-05-25 10:34:56 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021
18MF20120601 - ph
All offsets are below or at the lower limit. However, the two lowest offsets did
not receive
a 2nd QC (HU2004/05). Adjusting according to the weighted mean the pH value
would almost be in line with the most recent cruise in time (HU2011). However,
once again the carbon interconsistency check (type 2) does not support the above
described results. To achieve the best possible interconsistency pH should
receive a downward adjustment of -0.0076. But as for the other Hudson cruises
the standard deviation is extemly large (0.02)... Due to this large uncertainty
do not adjust...
Posted by nlange@geomar.de on 2018-05-25 10:31:41 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021



| Filename: | Comment: | Action | |
|---|---|---|---|
| 06MT19970707_Xover_press.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 06MT20030723_Xover_press.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 18HU19970509_Xover_press.png | [autogenerated from RC_Nico/nitrate!] |
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| 18HU20020623_Xover_press.png | [autogenerated from RC_Nico/nitrate!] |
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| 18HU20050526_Xover_press.png | [autogenerated from RC_Nico/nitrate!] |
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| 18HU20060524_Xover_press.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 18HU20080520_Xover_press.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 18HU20090517_Xover_press.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 18HU20100513_Xover_press.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| 18HU20110506_Xover_press.png | [autogenerated from RC_Nico/nitrate!] |
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| 74DI20080820_Xover_press.png | [autogenerated from RC_Nico/nitrate!] |
View | |
| Xresults_press.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 18MF20120601[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for nitrate_offset from percent
to factor: 1.009.
Posted by nlange@geomar.de on 2026-08-05 16:37:16 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated nitrate update for 18MF20120601
GLODAPv3 release: nitrate update of 18MF20120601 based on nitrate_offset: 0.9;
inversion: 0.9; inversion_full: 1.1; preadjustment: 0; offsets_raw: -0.9;
offsets_preadj: -0.3; offsets_preadj_u: 0.4; offsets_post: 0.0; offsets_post_u:
0.3; offsets_post_rt: -0.7; numberofxovers: 26; trends_pre: -0.1; trends_adj:
-0.1.
Posted by nlange@geomar.de on 2026-08-04 17:10:59 UTC for data product: GLODAPv3
18MF20120601 - nitrate
Most offsets are within the acceptable range. Further concentrations are roughly
in line with the ones of HU2010/11. Note the large scatter beweteen the profiles
and the high standard deviation of the offsets.
Posted by nlange@geomar.de on 2018-05-25 10:28:27 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

| Filename: | Comment: | Action | |
|---|---|---|---|
| 06MT19941115_Xover_press.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 06MT20030723_Xover_press.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 18HU19940524_Xover_press.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 18HU19960512_Xover_press.png | [autogenerated from RC_Nico/phosphate!] |
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| 18HU20040515_Xover_press.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 18HU20060524_Xover_press.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 18HU20070510_Xover_press.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 18HU20080520_Xover_press.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 18HU20090517_Xover_press.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 18HU20100513_Xover_press.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| 18HU20110506_Xover_press.png | [autogenerated from RC_Nico/phosphate!] |
View | |
| Xresults_press.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 18MF20120601[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for phosphate_offset from
percent to factor: 0.954.
Posted by nlange@geomar.de on 2026-08-05 16:37:40 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated phosphate update for 18MF20120601
GLODAPv3 release: phosphate update of 18MF20120601 based on phosphate_offset:
-4.6; inversion: 2.4; inversion_full: 1.9; preadjustment: -7; offsets_raw: -1.8;
offsets_preadj: -1.6; offsets_preadj_u: 0.4; offsets_post: -0.0; offsets_post_u:
0.1; offsets_post_rt: -0.4; numberofxovers: 26; trends_pre: 0.0; trends_adj:
0.0.
Posted by nlange@geomar.de on 2026-08-04 17:11:25 UTC for data product: GLODAPv3
18MF20120601 - phosphate
All offsets, but one HU1996 (not Qced), show values clearly above 1 - either
nearby or above the limit of 1.04 (1.02). There is no clear trend visible and
the offsets are visible at all depths. The suggested adjustment also improves
the Redfield ratio. Adjust 5% downward.
Posted by nlange@geomar.de on 2018-05-25 10:34:56 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

| Filename: | Comment: | Action | |
|---|---|---|---|
| 06MT19970707_Xover_press.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 06MT19990711_Xover_press.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 06MT20030723_Xover_press.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 18HU19970509_Xover_press.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 18HU19990627_Xover_press.png | [autogenerated from RC_Nico/silicate!] |
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| 18HU20030713_Xover_press.png | [autogenerated from RC_Nico/silicate!] |
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| 18HU20060524_Xover_press.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 18HU20080520_Xover_press.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 18HU20090517_Xover_press.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 18HU20100513_Xover_press.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 18HU20110506_Xover_press.png | [autogenerated from RC_Nico/silicate!] |
View | |
| 74DI20080820_Xover_press.png | [autogenerated from RC_Nico/silicate!] |
View | |
| Xresults_press.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 18MF20120601[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for silicate_offset from percent
to factor: 1.03.
Posted by nlange@geomar.de on 2026-08-05 16:37:54 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated silicate update for 18MF20120601[1-last]
GLODAPv3 release: CORRIGENDUM - silicate update of 18MF20120601[1-last] based on
silicate_offset: 3.0; inversion: 3.0; inversion_full: 3.4; preadjustment: 0;
offsets_raw: -1.3; offsets_preadj: -1.4; offsets_preadj_u: 0.8; offsets_post:
-0.0; offsets_post_u: 0.6; offsets_post_rt: 0.1; numberofxovers: 23; trends_pre:
0.0; trends_adj: 0.0.
Posted by nlange@geomar.de on 2026-08-05 14:17:23 UTC for data product: GLODAPv3
18MF20120601 - silicate
All offsets show extreme large standard devisations. There seems to be a
temporal trend towards higher concentrations. Data show no offset to HU2011.
Maintain - supported by analysis performed on density surfaces.
Posted by nlange@geomar.de on 2018-05-25 10:29:33 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021

| Filename: | Comment: | Action | |
|---|---|---|---|
| 06MM20090714_Xover_press.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 06MT19970707_Xover_press.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 06MT20030723_Xover_press.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 06MT20030831_Xover_press.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 18HU20030713_Xover_press.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 18HU20040515_Xover_press.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 18HU20050526_Xover_press.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 18HU20070510_Xover_press.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 18HU20080520_Xover_press.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 18HU20090517_Xover_press.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 18HU20100513_Xover_press.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| 18HU20110506_Xover_press.png | [autogenerated from RC_Nico/oxygen!] |
View | |
| Xresults_press.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 18MF20120601[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for oxygen_offset from percent
to factor: 1.012.
Posted by nlange@geomar.de on 2026-08-05 16:37:28 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated oxygen update for 18MF20120601
GLODAPv3 release: oxygen update of 18MF20120601 based on oxygen_offset: 1.2;
inversion: 1.2; inversion_full: 1.1; preadjustment: 0; offsets_raw: -1.3;
offsets_preadj: -1.2; offsets_preadj_u: 0.1; offsets_post: -0.0; offsets_post_u:
0.1; offsets_post_rt: -0.1; numberofxovers: 40; trends_pre: -0.0; trends_adj:
-0.0.
Posted by nlange@geomar.de on 2026-08-04 17:11:11 UTC for data product: GLODAPv3
18MF20120601 - oxygen
All, but two questionable crossovers (HU2004/05) are nearby or below the
threshold limit. Even with crossovers younger 2006 mean offset is 0.9852. But
given this highly variable region (and the possible tremporal trend), I have too
strong doubts to suggest such a small adjustment.
Posted by nlange@geomar.de on 2018-05-25 10:25:37 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021



| Filename: | Comment: | Action | |
|---|---|---|---|
| 18HUD20122QC___cfc12___Xresults.pdf | Cross Over Results for CFC-12 using 2000 meter pressure cut off |
View | |
| CFC-12-saturation.png | View | ||

View comment(s) (filtered by cfc12 in subject)
18MF20120601 - cfc12
All saturation ratios (upper 20m) show strong undersaturation - casue of strong
water foramtion?
Posted by nlange@geomar.de on 2018-05-25 10:31:52 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021










View 29 comment(s) (Lists all comments)
GLODAPv3 release: converted value for silicate_offset from percent to factor for 18MF20120601[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for silicate_offset from percent
to factor: 1.03.
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 18MF20120601[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for phosphate_offset from
percent to factor: 0.954.
Posted by nlange@geomar.de on 2026-08-05 16:37:40 UTC for data product: GLODAPv3
GLODAPv3 release: converted value for oxygen_offset from percent to factor for 18MF20120601[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for oxygen_offset from percent
to factor: 1.012.
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 18MF20120601[1-last]
GLODAPv3 release: CORRIGENDUM - converted value for nitrate_offset from percent
to factor: 1.009.
Posted by nlange@geomar.de on 2026-08-05 16:37:16 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated silicate update for 18MF20120601[1-last]
GLODAPv3 release: CORRIGENDUM - silicate update of 18MF20120601[1-last] based on
silicate_offset: 3.0; inversion: 3.0; inversion_full: 3.4; preadjustment: 0;
offsets_raw: -1.3; offsets_preadj: -1.4; offsets_preadj_u: 0.8; offsets_post:
-0.0; offsets_post_u: 0.6; offsets_post_rt: 0.1; numberofxovers: 23; trends_pre:
0.0; trends_adj: 0.0.
Posted by nlange@geomar.de on 2026-08-05 14:17:23 UTC for data product: GLODAPv3
18MF20120601[1-last] GLODAPv3 release
GLODAPv3 release: silicate autogenerated adjustment parameter update for
18MF20120601 - select parameter to view annotation with specific details.
Posted by nlange@geomar.de on 2026-08-05 14:17:23 UTC for data product: GLODAPv3
GLODAPv3 release: temperature added as NEW adjustment parameter to 18MF20120601[1-last]
Automated addition of temperature as NEW parameter to 18MF20120601[1-last] based
on temperature_offset: 0.
Posted by nlange@geomar.de on 2026-08-05 14:17:10 UTC for data product: GLODAPv3
18MF20120601[1-last] GLODAPv3 release
Automated addition of temperature as NEW adjustment parameter in GLODAPv3 to
18MF20120601[1-last] - select parameter to view annotation with specific
details.
Posted by nlange@geomar.de on 2026-08-05 14:17:10 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated tco2 update for 18MF20120601
GLODAPv3 release: tco2 update of 18MF20120601 based on tco2_offset: 0.0;
inversion: 0.0; inversion_full: 0.6; preadjustment: 0; offsets_raw: 3.5;
offsets_preadj: -0.3; offsets_preadj_u: 0.3; offsets_post: -0.5; offsets_post_u:
0.2; offsets_post_rt: 3.1; numberofxovers: 27; trends_pre: 0.7; trends_adj: 0.6.
Posted by nlange@geomar.de on 2026-08-04 17:12:09 UTC for data product: GLODAPv3
18MF20120601 GLODAPv3 release
GLODAPv3 release: tco2 autogenerated adjustment parameter update for
18MF20120601 - select parameter to view annotation with specific details.
Posted by nlange@geomar.de on 2026-08-04 17:12:09 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated salinity update for 18MF20120601
GLODAPv3 release: salinity update of 18MF20120601 based on salinity_offset:
0.0000; inversion: 0.0000; inversion_full: 0.0019; preadjustment: 0;
offsets_raw: 0.0027; offsets_preadj: 0.0003; offsets_preadj_u: 0.0013;
offsets_post: -0.0020; offsets_post_u: 0.0009; offsets_post_rt: 0.0002;
numberofxovers: 40; trends_pre: 0.0007; trends_adj: 0.0005.
Posted by nlange@geomar.de on 2026-08-04 17:11:39 UTC for data product: GLODAPv3
18MF20120601 GLODAPv3 release
GLODAPv3 release: salinity autogenerated adjustment parameter update for
18MF20120601 - 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 18MF20120601
GLODAPv3 release: phosphate update of 18MF20120601 based on phosphate_offset:
-4.6; inversion: 2.4; inversion_full: 1.9; preadjustment: -7; offsets_raw: -1.8;
offsets_preadj: -1.6; offsets_preadj_u: 0.4; offsets_post: -0.0; offsets_post_u:
0.1; offsets_post_rt: -0.4; numberofxovers: 26; trends_pre: 0.0; trends_adj:
0.0.
Posted by nlange@geomar.de on 2026-08-04 17:11:25 UTC for data product: GLODAPv3
18MF20120601 GLODAPv3 release
GLODAPv3 release: phosphate autogenerated adjustment parameter update for
18MF20120601 - select parameter to view annotation with specific details.
Posted by nlange@geomar.de on 2026-08-04 17:11:25 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated oxygen update for 18MF20120601
GLODAPv3 release: oxygen update of 18MF20120601 based on oxygen_offset: 1.2;
inversion: 1.2; inversion_full: 1.1; preadjustment: 0; offsets_raw: -1.3;
offsets_preadj: -1.2; offsets_preadj_u: 0.1; offsets_post: -0.0; offsets_post_u:
0.1; offsets_post_rt: -0.1; numberofxovers: 40; trends_pre: -0.0; trends_adj:
-0.0.
Posted by nlange@geomar.de on 2026-08-04 17:11:11 UTC for data product: GLODAPv3
18MF20120601 GLODAPv3 release
GLODAPv3 release: oxygen autogenerated adjustment parameter update for
18MF20120601 - select parameter to view annotation with specific details.
Posted by nlange@geomar.de on 2026-08-04 17:11:11 UTC for data product: GLODAPv3
GLODAPv3 release: autogenerated nitrate update for 18MF20120601
GLODAPv3 release: nitrate update of 18MF20120601 based on nitrate_offset: 0.9;
inversion: 0.9; inversion_full: 1.1; preadjustment: 0; offsets_raw: -0.9;
offsets_preadj: -0.3; offsets_preadj_u: 0.4; offsets_post: 0.0; offsets_post_u:
0.3; offsets_post_rt: -0.7; numberofxovers: 26; trends_pre: -0.1; trends_adj:
-0.1.
Posted by nlange@geomar.de on 2026-08-04 17:10:59 UTC for data product: GLODAPv3
18MF20120601 GLODAPv3 release
GLODAPv3 release: nitrate autogenerated adjustment parameter update for
18MF20120601 - 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 18MF20120601
GLODAPv3 release: alkalinity update of 18MF20120601 based on alkalinity_offset:
7.4; inversion: 7.4; inversion_full: 7.1; preadjustment: 0; offsets_raw: -6.1;
offsets_preadj: -6.3; offsets_preadj_u: 1.3; offsets_post: 0.0; offsets_post_u:
0.4; offsets_post_rt: 0.4; numberofxovers: 19; trends_pre: 0.0; trends_adj: 0.0.
Posted by nlange@geomar.de on 2026-08-04 13:46:23 UTC for data product: GLODAPv3
18MF20120601 GLODAPv3 release
GLODAPv3 release: alkalinity autogenerated adjustment parameter update for
18MF20120601 - select parameter to view annotation with specific details.
Posted by nlange@geomar.de on 2026-08-04 13:46:23 UTC for data product: GLODAPv3
18MF20120601 - phosphate
All offsets, but one HU1996 (not Qced), show values clearly above 1 - either
nearby or above the limit of 1.04 (1.02). There is no clear trend visible and
the offsets are visible at all depths. The suggested adjustment also improves
the Redfield ratio. Adjust 5% downward.
Posted by nlange@geomar.de on 2018-05-25 10:34:56 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021
18MF20120601 - cfc12
All saturation ratios (upper 20m) show strong undersaturation - casue of strong
water foramtion?
Posted by nlange@geomar.de on 2018-05-25 10:31:52 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021
18MF20120601 - ph
All offsets are below or at the lower limit. However, the two lowest offsets did
not receive
a 2nd QC (HU2004/05). Adjusting according to the weighted mean the pH value
would almost be in line with the most recent cruise in time (HU2011). However,
once again the carbon interconsistency check (type 2) does not support the above
described results. To achieve the best possible interconsistency pH should
receive a downward adjustment of -0.0076. But as for the other Hudson cruises
the standard deviation is extemly large (0.02)... Due to this large uncertainty
do not adjust...
Posted by nlange@geomar.de on 2018-05-25 10:31:41 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021
18MF20120601 - silicate
All offsets show extreme large standard devisations. There seems to be a
temporal trend towards higher concentrations. Data show no offset to HU2011.
Maintain - supported by analysis performed on density surfaces.
Posted by nlange@geomar.de on 2018-05-25 10:29:33 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021
18MF20120601 - salinity
Fits good to recent cruises (2007 - 2011). No evidence for an Offset. Maintain.
Posted by nlange@geomar.de on 2018-05-25 10:29:09 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021
18MF20120601 - nitrate
Most offsets are within the acceptable range. Further concentrations are roughly
in line with the ones of HU2010/11. Note the large scatter beweteen the profiles
and the high standard deviation of the offsets.
Posted by nlange@geomar.de on 2018-05-25 10:28:27 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021
18MF20120601 - oxygen
All, but two questionable crossovers (HU2004/05) are nearby or below the
threshold limit. Even with crossovers younger 2006 mean offset is 0.9852. But
given this highly variable region (and the possible tremporal trend), I have too
strong doubts to suggest such a small adjustment.
Posted by nlange@geomar.de on 2018-05-25 10:25:37 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021
18MF20120601 - alkalinity
Analysis performed for normalized alkalinity (Frijs et al. 2003). There is a
large scatter between the profiles - questionable precision… The majority of the
crossovers has a negative offset, but mostly within the range. Maintain.
Posted by nlange@geomar.de on 2018-05-25 10:21:50 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021
18MF20120601 - tco2
Analysis performed for normalized tco2 (Frijs et al. 2003).Temporal trend
towards higher concentrations visible. All crossovers (except one) younger 2004
show offsets within the acceptable range. Fits to crossover results for recent
HU Cruises. Maintain.
Posted by nlange@geomar.de on 2018-05-25 10:20:37 UTC for data product: GLODAPv2.2019, v2.2020, v2.2021
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