Name change

Since the collection of cruises known as OMEX 1 has data from the European
continental margin off northern Norway, at the
Goban Spur and off Iberia, it was decided to split it into two cruises: OMEX1NA
(North Atlantic) and OMEX1NS (Nordic Seas).
All the secondary QC that has been done so far regards the OMEX1NA part, that
will thus remain unchanged.
Kiel, 20081020
Toste Tanhua

Posted by Toste Tanhua on Mon Oct 20 09:13:30 +0200 2008 Edit

OMEX1 - ph

Reported pH is NBS at in-situ conditions, but OMEX1 is a join of cruises and the
data seems
to fit better with NBS 15. Perhaps in-situ conditions was only-used for surface
cruises?.
NBS15 is supposed as Original Scale.

Posted by Anton Velo on Mon Jul 28 13:47:20 +0200 2008 Edit

OMEX1 - oxygen

The average of all cross-overs is 0.989
The inversion suggest no adjustment.
This cruise seems to have a lot of scatters, the cross-overs with core cruises
shows that this cruise has some problem in oxygen. This could be done from the
scatters or because is lower in oxygen although the inversion suggests no
adjustment.
On this base is not possible to suggest an adjustment.
Zurich, 2008.06.13
During the paris meeting we decided no adjustment for this cruise
Ilaria Stendardo

Posted by Ilaria Stendardo on Fri Jun 13 15:58:53 +0200 2008 Edit

OMEX1 - alkalinity

Only 1 xover and bad.

Posted by Anton Velo on Fri Jun 13 10:16:27 +0200 2008 Edit

OMEX1 - ph

OMEX1 1091 885
pHSWS25
There are 5 xovers. The fitted offset is 0.020+-0.018.
It's no possible to suggest an adjustments, as there are a lot of variability in
xovers and inversions. In fact, all inversion residuals are very high and around
+-0.020~+-0.060
As this is a combination of cruises, is possible that not all of them use the
same pH scales
and this is not well reported.
So their calification is poor.
Vigo 2008/06/12
Fiz Perez
Anton Velo
--
All xovers and output of inversions are refered on figure: "Report plot for
adjustments"
Real diff (Green dots) are the differences taken directly from xover routines.
The complete segment of error bar represents the xover standard deviation.
Yellow line stand for the offset calculated for this cruise.
Black stars stand for the offset calculated for the others cruises in the
xovers.
Blue squares stand for the Fitted differences that would be obtained from the
calculated offsets (Yellow line - black stars)
Red dots stand for the Residuals between the 'Real diff'(Green dots) and 'Fitted
diff' (Blue squares)
c suffix in the upper X axis labels stand for Core Cruises.
d preffix in the upper X axis labels stand for pH determined with Alk and TCO2
using the CO2SYS routines and the Mehr'73 ctes fitted by Dick&Mill'87.
expocode ids in upper X axis stand for NA ids or SO_ids+10000 for avoiding
coincidences

Posted by Anton Velo on Fri Jun 13 09:09:05 +0200 2008 Edit

OMEX1 - tco2

Average offsets:
-39.17 (automatic)
-34.55 (automatic) without 06GA19960613 which is a flyer (-62.26)
-30.43 (manual)
Average offsets from xovers with Core Cruises:
-32.71 (automatic)
-29.16 (manual)
Inversion Results:
35.4 WLSQ
34.37 WDLSQ
Comments: Data is of poor quality: scatter is huge and offsets are enormous but
fairly consistents
Suggested adjustment: 30.94
quality: poor
Miami 2008.06.03
Denis Pierrot

Posted by Betty Huss on Wed Jun 11 20:50:55 +0200 2008 Edit

OMEX1 - silicate

This is really a suite of 3 cruises over 3 different years.
The average of all cross overs is 1.044.
The inversions suggest an adjustment of 0.94. This results seems to be biased by
an unrealistic value.
The cross-overs with the core cruises supports that the silicate values from
OMEX1 do not need any adjustments.
Based on these evidence I suggest no adjustment.
Kiel, 2008.06.10
Toste Tanhua

Posted by Toste Tanhua on Tue Jun 10 09:10:12 +0200 2008 Edit

OMEX1 - phosphate

This is really a suite of 3 cruises over 3 different years.
The N/P ratio is 16.35, intercept -0.85.
The average of all cross overs is 0.997.
The inversions suggest an adjustment of 1.11. This results seems to be biased by
an unrealistic value (vs. 316N19961102).
The cross-overs with the core cruises supports that the phosphate values from
OMEX1 do not need any adjustments.
Based on these evidence I suggest no adjustment.
Kiel, 2008.06.10
Toste Tanhua

Posted by Toste Tanhua on Tue Jun 10 09:06:39 +0200 2008 Edit

OMEX1 - nitrate

This is really a suite of 3 cruises over 3 different years.
The N/P ratio is 16.35, intercept -0.85.
The average of all cross overs is 1.009.
The inversions suggest no adjustment.
Based on these evidence I suggest no adjustment.
Kiel, 2008.06.09
Toste Tanhua

Posted by Toste Tanhua on Tue Jun 10 08:59:12 +0200 2008 Edit

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