CRUISE REPORT: AR07E
(Updated MAY 2017)







Highlights








                          Cruise Summary Information



          WOCE Section Designation  AR07E
Expedition designation (ExpoCodes)  64PE20110724 (aka: 64PE342)
                  Chief Scientists  H.M. van Aken / NIOZ
                             Dates  July 24 2011 to August 8 2011
                              Ship  RV Pelagia
                     Ports of call  Reykjavik (Iceland) to 
                                    Texel (the Netherlands)

                                                  60° 58.75' N
             Geographic Boundaries  42° 27.99' W                8° 59.98' W
                                                  55° 45.01' N

                          Stations  42
      Floats and drifters deployed  7 APEX ARGO floats deployed
    Moorings deployed or recovered  1 deployed, 1 recovered

                             Contact Information:

                           Dr. Hendrik M. van Aken
                 Netherlands Institute for Sea Research (NIOZ)
             P.O. Box 59 • 1790AB Den Burg/Texel • The Netherlands
      Tel: 31(0)222-369416 • Fax: 31(0)222-319674 • Email: aken@nioz.nl










                          RV Pelagia Shipboard Report:
                          Cruise 64PE342, Project THOR
                                 H.M. van Aken
                                Chief Scientist



















                  THOR 2011



                           NIOZ   Royal Netherlands Institute for Sea Research



                                  Texel, 2011












































Citation:

van Aken, H. M. (2011): RV Pelagia shipboard report: cruise 64PE342, Project THOR , 
Texel, The Netherlands, NIOZ. 

Cite this page as:
  hdl:10013/epic.41137 
Contact Email: 
  epicdocumentation@awi.de























Table of contents


nr.   Chapter                                                             page

   Acknowledgements                                                          4

1  Cruise Narrative                                                          5
   1.1  Highlights                                                           5
   1.2  Cruise Summary Information                                           6
   1.3  List of Principal Investigators                                      7
   1.4  Scientific Programme and Methods                                     7
   1.5  List of Cruise Participants                                          8

2  Underway Measurements                                                     9
   2.1  Navigation                                                           9
   2.2  Echo Sounding                                                        9
   2.3  Thermo-Salinograph  Measurements                                     9
   2.4  Meteorological data                                                  9
   2.5  Vessel mounted ADCP measurements                                     9

3  Hydrographic Measurements - Descriptions, Techniques, and Calibrations   10
   3.1  Conductivity-temperature-depth probe (CTD)                          10
   3.2  Reference temperature measurements                                  10
   3.3  Salinity water samples                                              11
   3.4  Oxygen reference water samples                                      11
   3.5  Data Management                                                     13

4  Preliminary Results                                                      14
   4.1  Potential Temperature                                               14
   4.2  Salinity                                                            15
   4.3  Dissolved oxygen                                                    15
   4.4  Potential vorticity                                                 16
   4.5  Velocity                                                            16

Appendix A (cruise summary file)                                            17
Appendix B (mooring summary file)                                           20




Acknowledgements

The research reported here has received funding from the European Community's 7th 
framework programme (FP7/2007-2013) under grant agreement No. GA212643 (THOR: 
"Thermohaline Overturning – at Risk", 2008-2012) and also contributes to the Dutch 
CLIVARNET Atlantic Monitoring Programme (CAMP). The moored equipment was funded by 
the LOCO investment programme of the Netherlands Foundation for Scientific Research 
(NWO).





1  Cruise Narrative

1.1  Highlights

a: Goals: The re-survey of former WOCE Hydrographic Program Repeat Section 
   A1/AR7E between Ireland and the recovery and redeployment of a long term 
   mooring in the Irminger Sea as part of the EU THOR programme.

b: Expedition Designation (EXPOCODE): 64PE342

c: Chief Scientist: Dr. Hendrik M. van Aken 
                    Netherlands Institute for Sea Research (NIOZ) 
                    P.O. Box 59
                    1790AB Den Burg/Texel 
                    The Netherlands
                    Telephone: 31(0)222-369416
                    Telefax:   31(0)222-319674
                    e-mail:    aken@nioz.nl

d: Ship: RV Pelagia,  Call Sign: PGRQ,  Captain: Ms. Corky Burkhard 
   length 66 m.
   beam 12.8 m
   draft 4 m
   maximum speed 11 knots

e: Ports of Call: Reykjavik (Iceland) to Texel (The Netherlands) 

f: Cruise dates: July 24 2011 to August 8 2011



1.2  Cruise Summary Information



Summary
    
In the evening of 24 July 2011, RV Pelagia left Reykjavik and set course to the 
position in the Irminger Sea to the position of the LOCO2 profiling mooring. After 
leaving port the underway recording system for navigational, meteorological, ADCP, 
and sea surface data was activated and a test cast with the CTD was carried out. A 
CTD cast was performed and the mooring (LOCO2-8) was recovered on July 27. After 
these mooring activities a CTD survey was carried out along the AR7E section between 
Greenland and Ireland. Two planned CTD stations in the continental shelf of 
Greenland were cancelled because of the presence of large quantities of pack ice. 
The CTD section was interrupted at July 29 for the redeployment of the mooring 
(LOCO2-9) and an extra CTD cast on that position. In the Irminger Sea 7 profiling 
ARGO floats were deployed in water deep then 2400 m. The last CTD cast was performed 
on August 5 on the continental shelf northwest if Ireland. In the evening of August 
8 RV Pelagia entered the NIOZ harbour at Texel.



Cruise Track
    
The cruise was carried out in the northern North Atlantic Ocean. The cruise 
track is shown in figure 1.


Figure 1: Cruise track of Pelagia cruise 64PE342, between Reykjavik (Iceland) 
          and Texel (the Netherlands).



Mooring Deployments
    
Mooring LOCO2-8 was recovered on July 27 while mooring LOCO2-9 was 
deployed on July 29 (MOR in appendix A). The mooring operations took place 
during daytime. The position of the deployment of LOCO2-9 is: 59°12.21'N, 
39°30.32'W (cross in Figure 2), the deployment time was 12:22 UTC. During the 
last 10 minutes before deployment Pelagia has followed a course over ground in 
the direction of 260° relative to North. Both LOCO2-8 and 2-9 are profiling 
moorings, fitted with a McLane/FSI CTD profiler, two RDI Long Ranger ADCPs and 
an SBE Microcat CTD. They were positioned at a depth of about 3000 m at the 
foot of the East Greenland slope, approximately in the centre of the Irminger
Gyre. See also Appendix B.


Figure 2: The position of the profiling mooring LOCO2-9



Number of Hydrographic Stations
    
A total of 42 CTD casts were performed along the former WOCE AR7E section, 
one test station before that section was surveyed, and two CTD casts near the 
mooring site. The location of these casts is shown in figure 3. The mutual station 
distance is about 30 nautical miles, while over steep topography that distance was 
reduced to about 15 miles. Due to the good weather conditions no CTD stations had to 
be cancelled. Further information on the time and location of the stations can be 
found in the Cruise Summary File (CTD and ROS in Appendix A).


Figure 3: The positions of the CTD casts, performed during cruise 64PE342.



Deployment of ARGO floats
    
Seven APEX ARGO floats were deployed in the Irminger Sea on behalf of Dr. A Sterl of 
the Dutch national meteorological service (KNMI), directly after a CTD cast (Figure 
4, FLT in appendix A). All 7 buoys made contact the ground station by satellite 
(see: also http://www.knmi.nl/~sterl/Argo/).


Figure 4: The position in the Irminger Sea where the ARGO floats were 
          deployed.



1.3  List of principal Investigators

     Name                          Responsibility     Affiliation
     ----------------------------  -----------------  ------------
     Dr. H.M. van Aken             Ocean hydrography  NIOZ/Texel
     Dr. M.F. de Jong              moorings           NIOZ/Texel
     Dr. A Sterl (no participant)  ARGO floats        KNMI/de Bilt



1.4  Scientific Programme and Methods
    
The dual goal of the research carried out during the cruise was to establish 
the hydrography along a zonal section between Greenland and Ireland to allow 
the study of inter-annual hydrographic variability and water mass formation since 
1990, and to service an instrumented mooring in the Irminger Sea, both as part of 
the EU THOR programme, and as an extension of the CAMP monitoring 
programme of NIOZ.
    
The zonal section is the former A1E/AR7E section of the WOCE Hydrographic 
Programme, which has been surveyed near-annually since 1990. The re-survey of 
this section is carried out in order to determine climate related inter-annual 
changes of the hydrographic structure in the North Atlantic Ocean.
    
The CTD frame was fitted with weights in order to secure a fast enough falling 
rate. This package was lowered with a velocity of about 1 m/s, except in the 
lowest 100 m where the veering velocity was reduced. Measurements during the 
down-cast went on to within 11 m from the bottom, until altimeter and/or the 
bottom switch indicated the proximity of the bottom. During the up-cast a few 
temperature samples were taken with the SBE35 reference thermometer at up to
12 prescribed depths, when the CTD winch was stopped, while water samples 
were collected with Niskin bottles for the determination of the salinity and the 
dissolved oxygen concentration. The CTD was also fitted with a lowered ADCP for the 
measurement of current profiles from the sea surface to the bottom, an oxygen 
sensor, a beam transmissometer for the determination of the turbidity (660 nm, path 
length 25 cm), and with a Fluorometer for the determination of the Chlorophyll-a 
concentration.
    
The mooring which was recovered (LOCO2-8) and re-deployed (LOCO2-9) was 
made available as part of the Dutch Long-term Ocean Climate Observations 
programme (LOCO). This programme aims at the establishment of a monitoring 
system which records climate relevant oceanographic parameters at several 
locations in the world ocean. The moorings contain a profiling CTD which records on 
a daily basis profiles of temperature and salinity between ~2400 and 160 m depth 
(McLane profiler). Additionally ADCPs record the velocity profiles in the upper and 
lower 600 m. Mooring LOCO2-9 is the 9-th of a series of moorings, each deployed for 
one year in the centre of the Irminger gyre.
    
On board data processing of the CTD data was carried out. From the profiler 
data preliminary ASCII files with temperature and density as functions of the 
pressure were produced. Not enough time was available for complete data 
processing, which has been carried out back at NIOZ, including the LADCP 
processing.

In support of the CTD observations the sea surface temperature and salinity 
were recorded continuously as well as several meteorological parameters. Also 
the currents in the upper 600 m were recorded with the vessel mounted acoustic 
Doppler current profiler (VMADCP).


1.5  Lists of Cruise Participants

Scientific crew

person            responsibility            Institute
----------------  ------------------------  ------------
H.M. van Aken     Chief Scientist           NIOZ/Texel
M.F,. de Jong     Moorings & hydrowatch     NIOZ/Texel
S. Ober           CTD & ADCP, hydrowatch    NIOZ/Texel
R. van der Heide  mooring instrumentation,  NIOZ/Texel
                  & hydrowatch
K. Bakker         Oxygen Determination      NIOZ/Texel
L. Boom           Marine engineering        NIOZ/Texel
J.-W. Meijerink   Hydrowatch                IMAU/Utrecht
J. van Lent       Hydrowatch                IMAU/Utrecht
J. Menninga       Hydrowatch                IMAU/Utrecht
M. van der Mheen  Hydrowatch                IMAU/Utrecht
R. de Oude        Hydrowatch                IMAU/Utrecht

NIOZ: Royal Netherlands Institute for Sea Research, Texel
IMAU: Institute for Marine and Atmospheric Research, Utrecht University.

Ships crew

C. Burkhard    Captain
J. van Haaren  First Mate
D. Verheyen    Second Mate
J. Seepma      Chief Engineer
M. Frankfort   Second Engineer
S. Maas        Able Seaman
C. Stevens     Able Seaman
J. Vitoria     Able Seaman
M. de Vries    Able Seaman
A. Lont        Cook
M. Zagars      Steward









2  UNDERWAY MEASUREMENTS


2.1  Navigation
    
A differential GPS receiver was used for the determination of the position. The data 
from the GPS receiver and the gyro compass were recorded in the underway data 
logging system. An additional Seapath dual antenna GPS receiver also determined the 
ship’s heading. Data processing has been carried out back at NIOZ. The speed over 
ground and course over ground were determined from the

GPS positions for successive one minute periods. After removal of occasional 
spikes, the data were smoothed with a 5 min. running mean and sub-samples 
every 5 minutes.


2.2  Echo Sounding
    
The Kongsberg EA600 echo sounder was used on board to determine the 
water depth. The uncorrected depths from this echo sounder were recorded in the 
Casino underway data logging system. Erroneous data have been removed back 
at NIOZ. It appeared that in the deep part of the Rockall Channel the majority of 
the echo sounder data was erroneous.


2.3  Thermo-Salinograph Measurements
    
The Sea Surface Temperature and Salinity were measured continuously with 
the SBE Seacat thermo-salinograph system with the water intake at a depth of 
about 3 m. Back at NIOZ these sensors have been calibrated by comparison with 
the CTD-cast at 3 m. After removal of occasional spikes, the data were smoothed with 
5 5 min running mean and sub-samples every 5 min.


2.4  Meteorological data
    
Air temperature and humidity, relative wind velocity and direction as well as 
air pressure and solar radiation were measured and recorded by the underway 
logging system. The true wind speed and direction were online calculated and 
also recorded. The connection with the solarimeter appeared to be defect. 
Therefore, the solar radiation data are missing from the meteorological records. 
After removal of occasional spikes, the data were smoothed with a 5 min. running 
mean and sub-sampled every 5 min.


2.5  ADCP meaurements
    
The 75 kHz ADCP mounted under the Pelagia has been used to collect current 
data from the mooring recovery onwards. The VMADCP data were collected with a 
dedicated service computer, together with the appropriate navigational data. 
Daily these data were transferred to the appropriate directory of the ships 
computer network. The final processing of the data still has to take place at 
Texel.




3  HYDROGRAPHIC MEASUREMENTS - DESCRIPTIONS, TECHNIQUES, AND CALIBRATIONS


3.1  CTD Data Collection and Processing
    
A recently (June 2011) calibrated SBE 9/11+ CTD, SN-0942, has been used to 
measure temperature, salinity, and turbidity profiles. The sensors mounted on the 
CTD were an SBE3 temperature sensor SN-034812, SBE4 conductivity sensor SN- 043385, 
a Digiquatz pressure sensor SN-53978, SBE43 oxygen sensors SN- 
430350 (station 1 to 19) and SN- 431932 (station 20 to 42), a Wetlab CStar 
beam transmission meter SN-CST-1406DR with a path length of 25 cm, 660 nm 
wavelength, a Seapoint turbidity sensor SN-11541, and a Chelsea Aqua 3 
fluorometer SN-088026, and a Tritech altimeter SN- 52077. The Seapoint 
turbidity sensor appeared to produce mainly faulty data.
    
The CTD was mounted in a special rack, which did contain 12 Niskin water 
samplers. The additional sensors of the CTD system were also recently calibrated by 
the manufacturers. To control the temperature measurements an SBE 35 Deep Ocean 
Standards thermometer was mounted next to the temperature sensor of the CTD. 
Reference temperature samples were taken with this when water samples were taken 
with the Niskin samplers. The water from these samplers was sub-sampled for the 
determination of dissolved oxygen, salinity, and 14C. The latter samples will be 
analyzed at Groningen University in support of the GEOTRACES programme.
    
For the data collection the new Seasave software for Windows (version 
V 7.21d), produced by SBE, was used. The CTD data were recorded with a 
frequency of 24 data cycles per second. After each CTD cast the data were copied to 
a hard disk of the ship's computer network, where a daily back-up copy was made.
    
Also mounted in the CTD rack was a Lowered ADCP (LADCP). Initially two 
ADCPs were used, a master and a slave. However, problems were encountered 
with the synchronisation cable or its connectors. Therefore most of the CTD casts 
were performed with only a single down looking master ADCP.

The CTD data were processed with the recently obtained calibration data, using 
the Seasoft software, also produced by SBE, and reduced to 1 dbar average 
ASCII files. The final calibration and data processing has been completed at Royal 
NIOZ, Texel.


3.2  Reference temperature measurements
    
Mounted on the CTD-rack was a high precision SBE35 reference temperature 
sensor, which recorded the temperature every time a Niskin sampler was closed 
by the CTD operator. These SBE35 temperature data have been used to control 
the calibration of the CTD temperature sensor. The mean difference TSBE35-TCTD 
amounts to -0.0001°C (±0.0010°C stdev, N=323). No further corrections were 
applied to the CTD temperature.


3.3  Salinity water samples
    
At the deep stations up to 3 water samples were collected from relatively 
homogenous parts of the water column. The (practical) salinity of these samples was 
determined in a constant-temperature laboratory container with a Guldline 8400B  
salinometer.  The standard water we used was from batch P146 (S = 34.992). The mean 
difference Ssample-SCTD amounts to 0.0014 (±0.0013 
stdev, N=39). The CTD salinity was corrected for this offset.


3.4  Oxygen reference water samples (K. Bakker and J. Menninga)
    
Water samples were for the determination of the dissolved oxygen 
concentration were taken from the Niskin bottle at up to 12 depths per CTD cast. 
From the deepest bottle 3 subsamples were taken. The oxygen concentration was 
determined with a spectrophotometric analysis with Winkler chemistry.

Equipment and methods:
    
After reacting with the pickling reagents according to Winkler (1888), acid was 
added and the Iodine-colour formed was measured in an acclimatised lab 
container equipped with a, Technicon TRAACS 800 spectrophotometer, connected 
to a homemade sampler and peristaltic pump with a capacity of 30 Oxygen 
bottles. The sample rate was set at 30 samples per hour, measuring about 500 
samples during the cruise
Sample handling:
    
The Oxygen samples were collected in approx. 113ml glass BOD bottles, after 
being filled flushed over three times with sample without any air trapped, taken 
directly from the CTD-rosette bottles. On the deck, immediately after sampling, the 
pickling reagents MnCl and NaOH/KI were added with dispensers; the tip down into the 
shoulder level of the bottle, the glass stopper placed, and shakes to react to form 
higher oxidation state of the Manganese. After 15 minutes the samples were shake 
again, and then placed with a rubber bang around the stopper in a storage container 
filled with water to prevent direct air-contact. The samples were kept at lab 
temperature of 20°C, and analysed typically within 10 hours, and 16 hours as a 
maximum, but always after being settled for first two hours in the storage container 
under water.

Calibration and Standards:

KIO3 as primary stock standard was prepared home at the lab, containing
71.48 mM of “Oxygen” equivalents, and used in addition to so called seawater 
blanks (seawater treated with inverse chemistry addition without any oxygen 
reaction) in calibrated Oxygen bottles. The calibration standards were prepared 
daily by diluting the separate stock standards, using an electronic pipette into 
four BOD-bottles when the stopper is removed, taking in account the extra volume of 
the pipette added.
    
In the lab the sample bottles with the settlement of the Manganese-oxides 
were gently lifted out of the storage container and with a dispenser 1 ml of 10 M of 
Sulphuric Acid was added to oxidise the available Iodide to form Iodine caused by 
liberation of the Manganese-oxides in acid medium. A teflonised magnetic stirring 
rod was put in the bottle and the bottle-opening immediately covered with parafilm 
to prevent any Iodine loss by evaporation, and covered to prevent light induced 
iodine forming.
    
Sample bottles including the calibration standards used were both sealed with 
"parafilm" under tension, a sharpened sample needle easily penetrated through 
leaving a small hole in the film. A peristaltic pump transporting the coloured 
solution to the flow cell in the spectrophotometer measuring the Absorbance at 
460 nm light, produced with a LED and a bandpass filter.
    
To obtain high resolution values, an attempt was made to set the range for 
Oxygen to be measured in that way that the samples were always at a level of 
40-80% of full scale values. To use the full A/D convertor of the 
spectrophotometer optimal and to reduce carryover, a baseline solution of around 160 
µM O2 in seawater was prepared being lower then the lowest Oxygen sample expected, 
and a maximum of 350 µM Oxygen calibrant was used to be the 
highest expected value.

Reference standard:
    
This Baker standard acts as a lab reference and its use is described under 
"quality control". It is diluted from a concentrated ampoule in the lab containing 
KIO3, finally representing a concentration of 100 mM O2 per litre. The average 
recovery found during this cruise is 100.2% of the certified value, n=17.

Quality Control:
    
The reference standard of Baker is measured in every run, its value showed 
no trend during the cruise, being stable over time. It is vitally important to get a 
good method to produce a 100% Oxygen standard in order to obtain real 
accuracy and so better comparison between labs and cruises. In Japan an 
attempt is made to prepare even an Oxygen reference standard, ready for use?!
    
After the cruise the KIO3 standard has been measured against a new KIO3 
standard, together with the collected natural standards to check whether a 
correction will be necessary, because the KIO3 stock standard onboard was made 
of KIO3 crystals containing some lumpy stuff. This led to a final correction with 
0.8% of the original concentration.

Statistics:
    
Precision of the Spectrophotometer set up was performed by analysing 5 
samples from one mixed Iodine coloured seawater solution, showing a standard 
deviation of 0.06 µM O2 on a level of 283 µM O2 showing a instrumental c.v. of 
0.02%, being close to the resolution of the spectrophotometer of 0.04 µM at the used 
range. However, running a test CTD-station showed a s.d. of 0.41 µM O2 on this 
level, for 23 duplicates with one outlier removed.
    
To obtain cross-run statistical values, analyses were carried out twice on the 
same sample from the bottle closed at the bottom layer in the first run, and one 
duplicate in the consecutive run. This gives the possibility to estimate the 
precision from station to station in a horizontal way. It's well known that the 
reproducibility in one calibrated run is much better than measurements made across 
several runs, with each run having its own calibration settings. Analysis of these 
duplicates in the runs show an RMS difference of 0.38 µM (n=32, within runs 
precision). Cross runs duplicate samples show absolute differences with an RMS of 
0.93 µM (avg. level 250 µM, n=35)
    
One reference used is a diluted Baker Ampoule, monitored during all runs, 
and the other is 20 litre of seawater mixed and tapped under lab conditions. An 
attempt was made to “back correct” on its average value after the cruise and check 
if the RMS of the duplicates in-between the runs get smaller? Raw duplicate 
difference expressed in RMS get a smaller value from 0.93uM to 0.78uM overall, 
showing a slight improvement.

Problems:
    
During the first day there was quite some noise on the TRAACS of a level of +/- 2%. 
Changing the current from the ships net from “fine” to “coarse”; improved this by 
reducing the noise to “0”.

Sometimes during a run, sticky Iodine colour was settled to the flow cell walls and 
be seen as gradual raise of the normal horizontal peak-plateau. By 
“babysitting” during the analysis, worse case could be avoided by pressing the 
pump-tubes after the flow cell for a few seconds so this could be removed by 
sudden under pressure in the flow line. Afterwards the problem was linked with 
the fact that first week the sampler setting was wrong, with sample to wash ratio of 
105seconds over 15seconds?? During the second half of the cruise this was set back 
to its original setting of 90 s over 30 s what improved the peak shape a lot, 
showing less carryover and less Iodine sticking to the flow cell walls.

The difference between the oxygen concentration from the water samples 
(OXYGEN) and CTD oxygen concentration appeared to depend significantly (linear 
correlation) on the oxygen concentration (CTDOXY) itself, on pressure (CTDPRS), 
temperature (CTDTMP) and on the time, expressed as station number (STNNBR). A multi-
parameter linear regression was used to determine the correction for the CTD oxygen 
concentration in the form:
OXYGEN = A×CTDOXY+B×CTDPRS+C×CTDTMP+D×STNNBR+E
    
The linear regression to determine the paramters A to E gave the following 
results (estimated value and standard deviation):
  A = 1.032 (±0.003)
  B = 0.0026 (±0.0002)
  C = 0.16 (±0.04)
  D = 0.096 (±0.008)
  E = -8.0 (±0.9) .
The residual of the linear regression had a standard deviation of 0.7 µmol/kg     
(N = 203). This regression equation was used for the correction of the "raw" CTD 
oxygen concentration.


3.5  Data Management

All raw data were copied to a cruise directory on the network computer of RV 
Pelagia in different groups of sub-directories. Subsequent processed data, final 
products, documents and figures were copied to separate sub-directories within the 
same cruise directory. Back ups of the network disks were made on a daily basis. At 
the end of the cruise copies of the whole cruise directory have been made on 
portable hard-disk and on the disc of a notebook computer. By help of paper 
measurement forms and computerized data inventory  files all data are tracked. A 
final inventory of the mooring activities, hydrographic stations, and the available 
raw data files was made in a cruise summary file (Appendix A).




4  PRELIMINARY RESULTS

4.1  Potential Temperature


Figure 6: The distribution of potential temperature (°C) along the AR7E 
          section, derived from the CTD downcasts.


The potential temperature distribution along the AR7E section (Figure 6) 
shows the usual structure. In the Irminger Sea the subarctic gyre in the Irminger 
Basin causes a doming of cold water in the centre of the basin, while along the 
edges of the basin a warmer boundary current (Irminger Current) surrounds the cold 
core. From the Reykjanes Ridge eastwards the permanent thermocline descends from 
about 500 dbar to over 1000 dbar, in agreement with the near geostrophic balance of 
the northward flowing warm near surface water of the North Atlantic current over 
slowly moving intermediate water. The relatively large isotherm distance between the 
seasonal thermocline at about 40 dbar (Figure 7) and the deeper permanent 
thermocline is indicative of the presence of Subarctic Mode Water, formed in the 
previous winter.
    
In the near bottom layers of the Irminger Basin the isotherms follow the 
topography of the East Greenland Slope closely, as can be expected from the 
fast, near geostrophic flowing Denmark Strait Overflow Water. In the western 
Iceland Basin the slightly warmer (2.5 to 3.0°C) Iceland-Scotland Overflow Water 
also causes the isotherms closely. Over the western slope of the Hatton Bank in the 
Iceland Basin the slope of both the topography and the isotherms is reversed due to 
the narrow northward flowing Deep Northern Boundary Current which transports the 
aged Lower Deep Water, admixed with traces of Antarctic Bottom Water. The slight 
topography following slope of the deepest isotherms in the Rockall Trough may be 
interpreted as a contour following flow in the deep layers of this narrow basin.


Figure 7: The distribution of potential temperature (°C) in the upper 500 
          dbar, derived from CTD downcasts.


In the upper 500 dbar the temperature distribution (Figure 7) shows a near 
constant depth of the seasonal thermocline at ~40 dbar, likely reflecting a near 
homogeneous wind climate. The large scale zonal trend of the temperature is 
interrupted by narrow cold bulges, which can be interpreted as transient cyclonic 
mid-ocean eddies, although the topography following doming of the isotherms around 
the Rockall Bank also can be connected with topography bound cyclonic circulation. 
Note here that in general the horizontal resolution of the survey (station distance) 
is not better than 30 n. miles (55 km) apart from the stations over steep topography 
which have a smaller mutual distance.


4.2  Salinity
   
The salinity distribution along the AR7E section (Figure 8) shows in the upper 
1000 dbar an eastward increase from the central Irminger Basin to the Irish 
slope. In the upper 40 dbar, above the thermocline, salinity is slightly reduced due 
to the precipitation excess since spring, when the seasonal stratification began. At 
station 3, over the Greenland continental shelf, surface water with a salinity below 
32.0 was observed, well below the surface salinity of nearly 34.7 at the following 
station over the upper slope. This reflects the presence of the relatively fresh 
East Greenland Shelf Current and the more saline western part of the Irminger 
Current. In the Irminger Current encircling the Irminger Basin, near stations 5, 6 
and 14, a high salinity subsurface core (S > 35.0) is encountered between 100 and 
400 dbar. From this core relatively high salinities extend at 100 to 200 dbar 
towards the centre of the Irminger gyre.


Figure 8: The distribution of salinity (PSS-78) along the AR7E section, 
          derived from the CTD downcasts.


The low salinity core in the Irminger Basin between 600 and 1200 dbar reflect 
the Labrador Sea Water, as the name indicates formed in the Labrador Sea. 
Similar low salinity cores are also observed in the Iceland Basin and Rockall 
Trough (near ~ 22500 dbar), reflecting the eastward advection and descent of 
this intermediate water mass in the northern North Atlantic Ocean. The Denmark 
Strait Overflow Water near the bottom of the Irminger Basin has a salinity        
(S < 34.925) slightly below the salinity of the directly overlying water mass. The 
latter water mass is an advective extension towards the western Atlantic basins of 
the more saline (S > 34.975) Iceland Scotland Overflow that reached the Irminger Sea 
via the Charlie-Gibbs Fracture Zone at ~52°N. Over the top of the Reykjanes Ridge 
intermediate water with a salinity higher than the Labrador Sea Water is 
encountered, which most likely originates from mixing of thermocline water with 
Iceland Scotland Overflow Water southeast of Iceland (Icelandic Slope Water).


4.3  Dissolved Oxygen
   
The distribution of dissolved oxygen (Figure 9) shows oxygen maxima in the 
Irminger Sea at 300 to 500 dbar, overlying the salinity minimum of the Labrador Sea 
Water. This is likely to present the local Irminger Sea Mode Water, ventilated in 
the previous winter by convective mixing. Similar but lower oxygen maxima (~250 to 
260 µmol/kg) are observed at the same depth range in the more saline Atlantic water 
above the main thermocline, the Sub-Arctic mode Water. The permanent thermocline is 
characterized by an oxygen minimum.


Figure 9. The distribution dissolved oxygen (μmol/kg) along the AR7E section, 
          derived from the CTD downcasts.


The salinity minimum of the Labrador Sea Water is characterized by a 
secondary oxygen maximum, slightly lower than the maximum of the Irminger 
Sea Mode Water. The oxygen content of this water type in the Iceland Basin and 
Rockall Trough has lower values (~267.5 µmol/kg in the latter basin).
   
The overflow waters are characterized by relatively high oxygen 
concentrations, (~270 µmol/kg in the Iceland Basin, >290 µmol/kg in the 
Irminger Sea).


4.4  Potential vorticity
   
The planetary potential vorticity (PV, Figure 10) is a near conservative 
parameter, reflecting the static stability of the water column. The distribution of 
PV confirms the earlier findings, presented above. The Mode Waters in all three 
basins are characterized by a PV minimum, as is the underlying Labrador Sea Water 
below the permanent thermocline. The overflow waters are capped by a PV maximum, 
indicative for the enhanced stability due to the relatively large density difference 
between the overflow waters and the overlying older water mass.
    
A peculiar characteristic of the PV distribution is the minimum, directly 
overlying the top of the Reykjanes ridge. This is a recurrent feature, observed 
during all surveys of the AR7E section since 1990, and is likely caused by turbulent 
mixing, driven by breaking internal waves over the rough topography of the ridge.


Figure 10: The distribution of the potential planetary vorticity (10-12s-1) 
           along the AR7E section derived from the CTD downcasts.



4.5  Velocity
    
Overall the LADCP observations reveal mainly a near columnar (=barotropic) 
flow, modified by some typical baroclinic features. The typical horizontal scales of 
the uni-directional velocity columns amounts to about 150 to 200 km. The meridional 
velocity (Figure 11) shows a mainly cyclonic circulation in the Irminger Sea at 
nearly all depths. In the near bottom layer, where Denmark Strait Overflow Water is 
found, two southward high velocity cores (V < -20 cm/s) are observed. In the centre 
of that basin that water type in the near-bottom layer recirculates to the north 
again. In the near bottom layer in the Iceland Basin, the Iceland-Scotland Overflow 
water is transported southwards in two separate high velocity cores, while along the 
western slope of the Hatton Bank the deep flow transports Lower Deep water to the 
north.


Figure 11: The distribution of the North component of the water velocity (m/s) 
           along the AR7E section, measured with the LADCP during the CTD 
           casts.





APPENDIX A. CRUISE SUMMARY PELAGIA CRUISE 64PE342




CAST TYPE

CTD  CTD cast         MOR  Mooring
FLT  ARGO Float


EVENT CODE

BE  Begin             BO  Bottom
EN  End
RE  Recovered         DE  Deployed



SHIP/CRS  WOCE  STN    CAST       DATE      TIME  EVENT  LATITUDE    LONGITUDE   NAV  UNC     MAX        COMMENTS           CTD
EXPOCODE  SECT  NBR  NO  TYPE               UTC   CODE  Deg  Min  H Deg  Min  H       DEPTH  PRESS                       DATA file
--------  ----  ---  --  ----  -----------  ----- ----- --- ----- - --- ----- -  ---  -----  -----  -------------------- ---------
64PE342          01   1  ROS   26-Jul-2011  13:12  BE    60 58.75 N  35 07.95 W  GPS  3001          O2 sensor S/N 430350
64PE342          01   1  ROS   26-Jul-2011  13:18  BO    60 58.74 N  35 07.86 W  GPS  3001    205   test                 PE342011
64PE342          01   1  ROS   26-Jul-2011  13:27  EN    60 58.75 N  35 07.73 W  GPS  3001          test  
64PE342          02   1  ROS   27-Jul-2011  10:21  BE    59 12.66 N  39 31.39 W  GPS  3043      
64PE342          02   1  ROS   27-Jul-2011  11:12  BO    59 12.65 N  39 31.37 W  GPS  3043   3057                        PE342021
64PE342          02   1  ROS   27-Jul-2011  11:48  EN    59 12.65 N  39 31.37 W  GPS  3043      
64PE342          02   2  MOR   27-Jul-2011  13:40  RE    59 12.44 N  39 30.34 W  GPS  3034          LOCO2-8  
64PE342   AR7E   03   1  ROS   28-Jul-2011  06:10  BE    59 52.82 N  42 27.99 W  GPS  222      
64PE342   AR7E   03   1  ROS   28-Jul-2011  06:15  BO    59 52.84 N  42 27.97 W  GPS  222     206                        PE342031
64PE342   AR7E   03   1  ROS   28-Jul-2011  06:24  EN    59 52.83 N  42 27.85 W  GPS  221      
64PE342   AR7E   04   1  ROS   28-Jul-2011  08:08  BE    59 53.90 N  42 15.09 W  GPS  395      
64PE342   AR7E   04   1  ROS   28-Jul-2011  08:15  BO    59 53.89 N  42 15.12 W  GPS  394     379                        PE342041
64PE342   AR7E   04   1  ROS   28-Jul-2011  08:29  EN    59 53.90 N  42 15.10 W  GPS  394      
64PE342   AR7E   05   1  ROS   28-Jul-2011  10:24  BE    59 50.68 N  41 44.83 W  GPS  1850      
64PE342   AR7E   05   1  ROS   28-Jul-2011  10:59  BO    59 50.68 N  41 44.85 W  GPS  1849   1838                        PE342051

SHIP/CRS  WOCE  STN    CAST       DATE      TIME  EVENT  LATITUDE    LONGITUDE   NAV  UNC     MAX        COMMENTS           CTD
EXPOCODE  SECT  NBR  NO  TYPE               UTC   CODE  Deg  Min  H Deg  Min  H       DEPTH  PRESS                       DATA file
--------  ----  ---  --  ----  -----------  ----- ----- --- ----- - --- ----- -  ---  -----  -----  -------------------- ---------
64PE342   AR7E   05   1  ROS   28-Jul-2011  11:52  EN    59 50.67 N  41 44.86 W  GPS  1850
64PE342   AR7E   06   1  ROS   28-Jul-2011  15:30  BE    59 44.72 N  40 44.64 W  GPS  2418
64PE342   AR7E   06   1  ROS   28-Jul-2011  16:13  BO    59 44.74 N  40 44.55 W  GPS  2418   2414                        PE342061
64PE342   AR7E   06   1  ROS   28-Jul-2011  17:20  EN    59 44.68 N  40 44.63 W  GPS  2416
64PE342   AR7E   06   2  FLT   28-Jul-2011  17:32  DE    59 44.63 N  40 44.85 W  GPS  2413          APEX float S/N 5792, ID A9872
64PE342   AR7E   07   1  ROS   28-Jul-2011  21:00  BE    59 40.04 N  39 44.61 W  GPS  2413
64PE342   AR7E   07   1  ROS   28-Jul-2011  21:49  BO    59 40.03 N  39 44.68 W  GPS  2812   2819                        PE342071
64PE342   AR7E   07   1  ROS   28-Jul-2011  22:58  EN    59 40.03 N  39 44.67 W  GPS  2811
64PE342   AR7E   07   2  FLT   28-Jul-2011  23:10  DE    59 40.01 N  39 44.65 W  GPS  2812          APEX float S/N 5788, ID A9906
64PE342          08   1  MOR   29-Jul-2011  12:22  DE    59 12.21 N  39 30.32 W  GPS  3043          LOCO2-9
64PE342          08   2  CTD   29-Jul-2011  13:02  BE    59 13.38 N  39 30.22 W  GPS  3034
64PE342          08   2  CTD   29-Jul-2011  13:56  BO    59 13.37 N  39 30.37 W  GPS  3034   3049                        PE342082
64PE342          08   2  CTD   29-Jul-2011  14:50  EN    59 13.34 N  39 30.42 W  GPS  3034
64PE342          08   3  FLT   29-Jul-2011  14:58  DE    59 13.36 N  39 30.44 W  GPS  3034          APEX float S/N 5789, ID A9902
64PE342   AR7E   09   1  ROS   29-Jul-2011  18:26  BE    59 34.20 N  38 46.41 W  GPS  2991
64PE342   AR7E   09   1  ROS   29-Jul-2011  19:19  BO    59 34.21 N  38 46.31 W  GPS  2991   3006                        PE342091
64PE342   AR7E   09   1  ROS   29-Jul-2011  20:35  EN    59 34.20 N  38 46.29 W  GPS  2991
64PE342   AR7E   09   2  FLT   29-Jul-2011  20:43  DE    59 34.19 N  38 46.20 W  GPS  2991          APEX float S/N 5790, ID A9900
64PE342   AR7E   10   1  ROS   30-Jul-2011  00:10  BE    59 27.93 N  37 46.72 W  GPS  3144
64PE342   AR7E   10   1  ROS   30-Jul-2011  01:05  BO    59 27.92 N  37 46.76 W  GPS  3145   3162                        PE342101
64PE342   AR7E   10   1  ROS   30-Jul-2011  02:30  EN    59 27.85 N  37 46.62 W  GPS  3144
64PE342   AR7E   10   2  FLT   30-Jul-2011  02:43  DE    59 27.94 N  37 46.79 W  GPS  3144          APEX float S/N 5791, ID A9907
64PE342   AR7E   11   1  ROS   30-Jul-2011  05:56  BE    59 23.50 N  36 50.98 W  GPS  3127
64PE342   AR7E   11   1  ROS   30-Jul-2011  06:52  BO    59 23.49 N  36 51.00 W  GPS  3127   3146                        PE342111
64PE342   AR7E   11   1  ROS   30-Jul-2011  08:10  EN    59 23.49 N  36 51.00 W  GPS  3127
64PE342   AR7E   11   2  FLT   30-Jul-2011  08:18  DE    59 23.53 N  36 51.00 W  GPS  3126          APEX float S/N 5787, ID A9913
64PE342   AR7E   12   1  ROS   30-Jul-2011  11:34  BE    59 17.79 N  35 53.77 W  GPS  3119
64PE342   AR7E   12   1  ROS   30-Jul-2011  12:32  BO    59 17.83 N  35 53.76 W  GPS  3119   3137                         PE342121
64PE342   AR7E   12   1  ROS   30-Jul-2011  13:52  EN    59 17.81 N  35 53.76 W  GPS  3119
64PE342   AR7E   12   2  FLT   30-Jul-2011  14:00  DE    59 17.89 N  35 53.88 W  GPS  3119          APEX float S/N 5786, ID A9951
64PE342   AR7E   13   1  ROS   30-Jul-2011  17:17  BE    59 11.78 N  34 56.19 W  GPS  2520
64PE342   AR7E   13   1  ROS   30-Jul-2011  18:01  BO    59 11.76 N  34 56.20 W  GPS  2520   2527                        PE342131
64PE342   AR7E   13   1  ROS   30-Jul-2011  19:06  EN    59 11.79 N  34 56.19 W  GPS  2521
64PE342   AR7E   14   1  ROS   30-Jul-2011  22:56  BE    59 06.00 N  33 53.72 W  GPS  2516
64PE342   AR7E   14   1  ROS   30-Jul-2011  23:46  BO    59 06.01 N  33 53.71 W  GPS  2514   2527                        PE342141
64PE342   AR7E   14   1  ROS   31-Jul-2011  00:52  EN    59 05.91 N  33 53.72 W  GPS  2524
64PE342   AR7E   15   1  ROS   31-Jul-2011  04:15  BE    59 01.35 N  33 00.04 W  GPS  2302
64PE342   AR7E   15   1  ROS   31-Jul-2011  04:57  BO    59 01.33 N  32 59.99 W  GPS  2303   2301                        PE342151
64PE342   AR7E   15   1  ROS   31-Jul-2011  05:58  EN    59 01.33 N  33 00.03 W  GPS  2303
64PE342   AR7E   16   1  ROS   31-Jul-2011  09:22  BE    58 56.14 N  32 01.51 W  GPS  1794
64PE342   AR7E   16   1  ROS   31-Jul-2011  09:56  BO    58 56.15 N  32 01.50 W  GPS  1793   1787                        PE342161
64PE342   AR7E   16   1  ROS   31-Jul-2011  10:46  EN    58 56.15 N  32 01.50 W  GPS  1793

SHIP/CRS  WOCE  STN    CAST       DATE      TIME  EVENT  LATITUDE    LONGITUDE   NAV  UNC     MAX        COMMENTS           CTD
EXPOCODE  SECT  NBR  NO  TYPE               UTC   CODE  Deg  Min  H Deg  Min  H       DEPTH  PRESS                       DATA file
--------  ----  ---  --  ----  -----------  ----- ----- --- ----- - --- ----- -  ---  -----  -----  -------------------- ---------
64PE342   AR7E   17   1  ROS   31-Jul-2011  13:45  BE    58 50.81 N  31 06.56 W  GPS  1495  
64PE342   AR7E   17   1  ROS   31-Jul-2011  14:11  BO    58 50.81 N  31 06.76 W  GPS  1488   1481                        PE342171
64PE342   AR7E   17   1  ROS   31-Jul-2011  14:51  EN    58 50.80 N  31 06.98 W  GPS  1487    
64PE342   AR7E   18   1  ROS   31-Jul-2011  18:04  BE    58 44.98 N  30 11.62 W  GPS  1646    
64PE342   AR7E   18   1  ROS   31-Jul-2011  18:36  BO    58 44.98 N  30 11.62 W  GPS  1645   1652   no LADCP             PE342181
64PE342   AR7E   18   1  ROS   31-Jul-2011  19:23  EN    58 44.96 N  30 11.61 W  GPS  1672    
64PE342   AR7E   19   1  ROS   31-Jul-2011  23:04  BE    58 40.99 N  29 13.94 W  GPS  2234    
64PE342   AR7E   19   1  ROS   31-Jul-2011  23:47  BO    58 40.99 N  29 13.94 W  GPS  2234   2251   bad CTD O2 values    PE342191
64PE342   AR7E   19   1  ROS   01-Aug-2011  00:46  EN    58 40.98 N  29 13.90 W  GPS  2238          from sample 4 upwards
64PE342   AR7E   20   1  ROS   01-Aug-2011  04:20  BE    58 34.97 N  28 19.61 W  GPS  2112          new oxygen sensor in-
64PE342   AR7E   20   1  ROS   01-Aug-2011  04:56  BO    58 34.97 N  28 19.59 W  GPS  2113   2112   stalled (S/N 431932) PE342201
64PE342   AR7E   20   1  ROS   01-Aug-2011  05:53  EN    58 34.99 N  28 19.59 W  GPS  2113     
64PE342   AR7E   21   1  ROS   01-Aug-2011  09:32  BE    58 30.16 N  27 24.29 W  GPS  2232     
64PE342   AR7E   21   1  ROS   01-Aug-2011  10:15  BO    58 30.16 N  27 24.29 W  GPS  2232   2233                        PE342211
64PE342   AR7E   21   1  ROS   01-Aug-2011  11:13  EN    58 30.16 N  27 24.31 W  GPS  2232     
64PE342   AR7E   22   1  ROS   01-Aug-2011  14:26  BE    58 26.01 N  26 32.63 W  GPS  2265     
64PE342   AR7E   22   1  ROS   01-Aug-2011  15:15  BO    58 25.97 N  26 32.75 W  GPS  2666   2682                        PE342221
64PE342   AR7E   22   1  ROS   01-Aug-2011  16:27  EN    58 25.94 N  26 32.74 W  GPS  2668     
64PE342   AR7E   23   1  ROS   01-Aug-2011  20:06  BE    58 19.89 N  25 32.41 W  GPS  2783     
64PE342   AR7E   23   1  ROS   01-Aug-2011  20:59  BO    58 19.88 N  25 32.38 W  GPS  2782   2799                        PE342231
64PE342   AR7E   23   1  ROS   01-Aug-2011  22:09  EN    58 19.89 N  25 32.38 W  GPS  2782     
64PE342   AR7E   24   1  ROS   02-Aug-2011  01:34  BE    58 12.34 N  24 38.32 W  GPS  2797     
64PE342   AR7E   24   1  ROS   02-Aug-2011  02:26  BO    58 12.26 N  24 38.23 W  GPS  2800   2817                        PE342241
64PE342   AR7E   24   1  ROS   02-Aug-2011  03:31  EN    58 12.29 N  24 38.30 W  GPS  2798     
64PE342   AR7E   25   1  CTD   02-Aug-2011  06:51  BE    58 04.68 N  23 45.02 W  GPS  2954     
64PE342   AR7E   25   1  CTD   02-Aug-2011  07:45  BO    58 04.66 N  23 45.03 W  GPS  2954   2973   sampling failed      PE342251
64PE342   AR7E   25   1  CTD   02-Aug-2011  07:57  EN    58 04.66 N  23 44.99 W  GPS  2954          upcast aborted
64PE342   AR7E   26   1  ROS   02-Aug-2011  12:23  BE    57 54.87 N  22 48.94 W  GPS  3007     
64PE342   AR7E   26   1  ROS   02-Aug-2011  13:19  BO    57 54.92 N  22 49.04 W  GPS  3006   3034                        PE342261
64PE342   AR7E   26   1  ROS   02-Aug-2011  14:33  EN    57 54.90 N  22 49.00 W  GPS  3007     
64PE342   AR7E   27   1  ROS   02-Aug-2011  17:44  BE    57 46.42 N  21 55.07 W  GPS  3061     
64PE342   AR7E   27   1  ROS   02-Aug-2011  18:40  BO    57 46.44 N  21 55.09 W  GPS  3062   3091                        PE342271
64PE342   AR7E   27   1  ROS   02-Aug-2011  19:57  EN    57 46.44 N  21 55.09 W  GPS  3063     
64PE342   AR7E   28   1  CTD   02-Aug-2011  21:44  BE    57 42.47 N  21 30.17 W  GPS  2654     
64PE342   AR7E   28   1  CTD   02-Aug-2011  22:24  BO    57 42.48 N  21 30.19 W  GPS  2656   2676   no LADCP             PE342281
64PE342   AR7E   28   1  CTD   02-Aug-2011  23:24  EN    57 42.49 N  21 30.20 W  GPS  2658     
64PE342   AR7E   29   1  ROS   03-Aug-2011  01:23  BE    57 36.92 N  21 01.97 W  GPS  2316     
64PE342   AR7E   29   1  ROS   03-Aug-2011  02:05  BO    57 36.94 N  21 01.91 W  GPS  2316   2323                        PE342291
64PE342   AR7E   29   1  ROS   03-Aug-2011  03:08  EN    57 36.94 N  21 01.85 W  GPS  2317     
64PE342   AR7E   30   1  CTD   03-Aug-2011  04:39  BE    57 35.20 N  20 37.41 W  GPS  2175     
64PE342   AR7E   30   1  CTD   03-Aug-2011  05:17  BO    57 35.19 N  20 37.42 W  GPS  2176   2180                        PE342301
64PE342   AR7E   30   1  CTD   03-Aug-2011  05:55  EN    57 35.21 N  20 37.40 W  GPS  2176     

SHIP/CRS  WOCE  STN    CAST       DATE      TIME  EVENT  LATITUDE    LONGITUDE   NAV  UNC     MAX        COMMENTS           CTD
EXPOCODE  SECT  NBR  NO  TYPE               UTC   CODE  Deg  Min  H Deg  Min  H       DEPTH  PRESS                       DATA file
--------  ----  ---  --  ----  -----------  ----- ----- --- ----- - --- ----- -  ---  -----  -----  -------------------- ---------
64PE342   AR7E   31   1  ROS   03-Aug-2011  07:43  BE    57 30.06 N  20 08.89 W  GPS  1325   
64PE342   AR7E   31   1  ROS   03-Aug-2011  08:09  BO    57 30.05 N  20 08.88 W  GPS  1325   1322                        PE342311
64PE342   AR7E   31   1  ROS   03-Aug-2011  08:47  EN    57 30.05 N  20 08.86 W  GPS  1325       
64PE342   AR7E   32   1  ROS   03-Aug-2011  12:23  BE    57 22.00 N  19 15.98 W  GPS  993       
64PE342   AR7E   32   1  ROS   03-Aug-2011  12:47  BO    57 21.94 N  19 15.96 W  GPS  994     989                        PE342321
64PE342   AR7E   32   1  ROS   03-Aug-2011  13:10  EN    57 21.95 N  19 15.96 W  GPS  994       
64PE342   AR7E   33   1  ROS   03-Aug-2011  16:14  BE    57 14.15 N  18 21.72 W  GPS  1302       
64PE342   AR7E   33   1  ROS   03-Aug-2011  16:37  BO    57 14.15 N  18 21.73 W  GPS  1301   1298                        PE342331
64PE342   AR7E   33   1  ROS   03-Aug-2011  17:14  EN    57 14.16 N  18 21.72 W  GPS  1302       
64PE342   AR7E   34   1  ROS   03-Aug-2011  20:30  BE    57 05.79 N  17 27.02 W  GPS  1328       
64PE342   AR7E   34   1  ROS   03-Aug-2011  20:55  BO    57 05.79 N  17 27.03 W  GPS  1328   1324                        PE342341
64PE342   AR7E   34   1  ROS   03-Aug-2011  21:32  EN    57 05.79 N  17 27.03 W  GPS  1328       
64PE342   AR7E   35   1  ROS   04-Aug-2011  00:47  BE    56 57.98 N  16 32.01 W  GPS  1217       
64PE342   AR7E   35   1  ROS   04-Aug-2011  01:12  BO    56 57.95 N  16 31.99 W  GPS  1216   1214                        PE342351
64PE342   AR7E   35   1  ROS   04-Aug-2011  01:46  EN    56 57.95 N  16 32.07 W  GPS  1216       
64PE342   AR7E   36   1  ROS   04-Aug-2011  04:59  BE    56 47.96 N  15 40.69 W  GPS  649       
64PE342   AR7E   36   1  ROS   04-Aug-2011  05:11  BO    56 47.95 N  15 40.70 W  GPS  649     641                        PE342361
64PE342   AR7E   36   1  ROS   04-Aug-2011  05:31  EN    56 47.96 N  15 40.70 W  GPS  650       
64PE342   AR7E   37   1  ROS   04-Aug-2011  08:49  BE    56 40.19 N  14 47.59 W  GPS  187       
64PE342   AR7E   37   1  ROS   04-Aug-2011  08:55  BO    56 40.18 N  14 47.59 W  GPS  187     174                        PE342371
64PE342   AR7E   37   1  ROS   04-Aug-2011  09:03  EN    56 40.19 N  14 47.59 W  GPS  187       
64PE342   AR7E   38   1  ROS   04-Aug-2011  11:15  BE    56 34.74 N  14 11.78 W  GPS  332       
64PE342   AR7E   38   1  ROS   04-Aug-2011  11:21  BO    56 34.73 N  14 11.78 W  GPS  331     320                        PE342381
64PE342   AR7E   38   1  ROS   04-Aug-2011  11:32  EN    56 34.72 N  14 11.79 W  GPS  334       
64PE342   AR7E   39   1  ROS   04-Aug-2011  13:45  BE    56 29.25 N  13 36.01 W  GPS  1926       
64PE342   AR7E   39   1  ROS   04-Aug-2011  14:23  BO    56 29.23 N  13 35.96 W  GPS  1926   1938                        PE342391
64PE342   AR7E   39   1  ROS   04-Aug-2011  15:20  EN    56 29.21 N  13 35.96 W  GPS  1927       
64PE342   AR7E   40   1  ROS   04-Aug-2011  17:03  BE    56 24.92 N  13 09.48 W  GPS  2399       
64PE342   AR7E   40   1  ROS   04-Aug-2011  17:46  BO    56 24.92 N  13 09.49 W  GPS  2401   2415                        PE342401
64PE342   AR7E   40   1  ROS   04-Aug-2011  18:46  EN    56 24.93 N  13 09.50 W  GPS  2401       
64PE342   AR7E   41   1  ROS   04-Aug-2011  21:46  BE    56 17.13 N  12 19.65 W  GPS         
64PE342   AR7E   41   1  ROS   04-Aug-2011  22:31  BO    56 17.13 N  12 19.67 W  GPS         2495                        PE342411
64PE342   AR7E   41   1  ROS   04-Aug-2011  23:38  EN    56 17.11 N  12 19.58 W  GPS         
64PE342   AR7E   42   1  ROS   05-Aug-2011  02:38  BE    56 09.44 N  11 29.84 W  GPS  2244       
64PE342   AR7E   42   1  ROS   05-Aug-2011  03:29  BO    56 09.35 N  11 29.80 W  GPS  2221   2668   not all bottles      PE342421
64PE342   AR7E   42   1  ROS   05-Aug-2011  04:46  EN    56 09.34 N  11 29.78 W  GPS  2335          did close
64PE342   AR7E   43   1  ROS   05-Aug-2011  07:30  BE    56 01.81 N  10 43.21 W  GPS  2370       
64PE342   AR7E   43   1  ROS   05-Aug-2011  08:13  BO    56 01.82 N  10 43.25 W  GPS  2371   2387                        PE342431
64PE342   AR7E   43   1  ROS   05-Aug-2011  09:13  EN    56 01.82 N  10 43.25 W  GPS  2372       
64PE342   AR7E   44   1  ROS   05-Aug-2011  12:13  BE    55 52.94 N   9 51.22 W  GPS  1918       
64PE342   AR7E   44   1  ROS   05-Aug-2011  12:49  BO    55 52.90 N   9 51.17 W  GPS  1917   1924                        PE342441
64PE342   AR7E   44   1  ROS   05-Aug-2011  13:43  EN    55 52.88 N   9 51.23 W  GPS  1917       

SHIP/CRS  WOCE  STN    CAST       DATE      TIME  EVENT  LATITUDE    LONGITUDE   NAV  UNC     MAX        COMMENTS           CTD
EXPOCODE  SECT  NBR  NO  TYPE               UTC   CODE  Deg  Min  H Deg  Min  H       DEPTH  PRESS                       DATA file
--------  ----  ---  --  ----  -----------  ----- ----- --- ----- - --- ----- -  ---  -----  -----  -------------------- ---------
64PE342   AR7E   45   1  ROS   05-Aug-2011  15:23  BE    55 48.97 N   9 26.00 W  GPS  824  
64PE342   AR7E   45   1  ROS   05-Aug-2011  15:38  BO    55 48.97 N   9 25.97 W  GPS  823     821                        PE342451
64PE342   AR7E   45   1  ROS   05-Aug-2011  16:04  EN    55 49.00 N   9 25.95 W  GPS  821    
64PE342   AR7E   46   1  CTD   05-Aug-2011  17:49  BE    55 45.01 N   8 59.99 W  GPS  124    
64PE342   AR7E   46   1  CTD   05-Aug-2011  17:51  BO    55 45.02 N   8 59.99 W  GPS  124     112   btls malfunctioned   PE342461
64PE342   AR7E   46   1  CTD   05-Aug-2011  17:59  EN    55 45.02 N   8 59.98 W  GPS  124    









Appendix B. Mooring summary file of LOCO2-9


                                  height
Mooring                 relasred  above   Depth in   bum-  recording rate/   
LOCO 2-9        S/N     length    bottom  water (m)  pers   release code    remarks
------------  --------  --------  ------  ---------  ----  ---------------  -------
instuments 
& cables      

bottom weight               1              3018                             corrected
                                                                            depth
5 m chain                   5        1     3017
                                     6     3012
releases                    2
OCEANO RT      #1227                       3010              08D2
OCEANO AR      #0450                 8     3010                   1478
Microcat        2675      573              3003
cable                     572
                                   580     2438
chain                       1
                                   581     2437
Longranger                                                                  down-
ADCP            3699        2                                               looking
                                   583     2435
chain                       1
bumper                                     2433
                                   584     2434
cable                    2284
McLane
profiler      11564-01                    150-2400
                                  2868      150
bumper                                      151
chain                       1
                                  2869      149
sub-surface
buoy                        1
                                  2870      148
chain      
                            2
                                  2872      146
cable                      27
                                  2899      119
chain                       1
                                  2900      118
Longranger                                                                  down-
ADCP                        1                                               looking

                                  2901      117
floating line              10
top buoy                          2911      107
ARGOS
baken           60667                                                       ID=22580





























CCHDO Data Processing Notes

• ExpoCode changed Matt Shen 
Date: 2013-09-19 
Data Type: ExpoCode 
Action: Website Update 
Note: 
=======================
64PE20110724 processing
=======================

2013-09-19

M Shen

.. contents:: :depth: 2

Process
=======

ExpoCode changed from 64PR20110724 to 64PE20110724. 64PR20110724 added as an alias 
for the cruise. 
Directories
===========
:working directory:
  /data/co2clivar/atlantic/ar07e/./original/2013.09.19_expocode_correction_MYS
:cruise directory:
  /data/co2clivar/atlantic/ar07e/ar07e_64PR20110724

Updated Files Manifest
======================
					

• Available under 'Files as received' CCHDO Staff 
Date: 2012-09-17 
Data Type: BTL/SUM/CTD files 
Action: Website Update 
Note: 
The following files are now available online under 'Files as received', unprocessed 
by the CCHDO.

64PE342.zip
					

• File Submission Hendrik M. van Aken
64PE342.zip (download) #b1e72 
Date: 2012-05-10 
Current Status: unprocessed 
Notes
BTL/SUM/CTD files


• File Submission van Aken, Hendrik M.
64PE342.zip (download) #b1e72 
Date: 2012-05-10 
Current Status: unprocessed 
Notes
Expocode: 64PE342
Ship: Pelagia
Woce Line: AR7E
Note: H.M. van Aken, Chief Scientist
Zipped file, Bottle data and summary file in Excel format, CTD data in CSV ASCII 
files


• to go online Hendrik van Aken 
Date: 2012-05-10 
Data Type: CTD/BTL/SUM 
Action: Submitted 
Note: 
Zipped file, Bottle data and summary file in Excel format, CTD data in CSV ASCII 
files