CRUISE REPORT: AR07W
(Updated AUG 2017)











Highlights




                          Cruise Summary Information

          WOCE Section Designation  AR07W
Expedition designation (ExpoCodes)  18HU20021129
                  Chief Scientists  Erica Head/BIO
                             Dates  2002 NOV 29 – 2002 DEC 12 
                              Ship  CCGS Hudson
                     Ports of call  St. John's - Greenland

                                                   60° 34' 45"
             Geographic Boundaries  63° 19' 15" W               48° 14' 35" W
                                                   44° 16' 58"

                          Stations  30
      Floats and drifters deployed  0
    Moorings deployed or recovered  2 deployed

                          Recent Contact Information:

                                Dr. Erica Head
           Fisheries and Oceans Canada • Ecosystem Research Division 
                      Bedford Institute of Oceanography
  1 Challenger Drive P.O. Box 1006 • Dartmouth, Nova Scotia B2Y 4A2 • Canada
 Email: Erica.Head@mar.dfo-mpo.gc.ca • Tel: 902-426-2317 • Fax: 902-426-9388















CRUISE REPORT OF THE CCGS HUDSON MISSION 2002-075

PARTICIPANTS:

Erica Head (Senior Scientist, OSD, BIO)
Glen Harrison (OSD, BIO)
Allyn Clarke (ODS, BIO)
Edward Horne (OSD, BIO)
Jeff Anning (OSD, BIO)
Jay Bugden (OSD, BIO)
Tim Perry (Contractor in OSD, BIO)
Paul Dickie (OSD, BIO)
Igor Yashayaev (OSD, BIO)
Lidia Yebra Mora (Plymouth Marine Laboratory, UK)
Jerome Cuny (Univ. of Washington, USA)
Wade Blanchard (Dalhousie Univ.)
Murray Scotney (TOS, BIO)



OBJECTIVES:

The main objective of the mission was to determine the overwintering vertical 
depth distribution of the copepod Calanus finmarchicus along the AR7W section 
across the Labrador Sea. This organism dominates the zooplankton biomass in 
North Atlantic waters north of the Gulf Stream, although its abundance and 
distribution is influenced by changes in hydrography resulting from climatic 
variations. There is currently an international collaboration to determine 
life history parameters, including overwintering depth distribution, in order 
to model the space/time dynamics of C. finmarchicus in the northwest sub-
polar gyre, with a view to predicting how they might be affected by global 
warming. This cruise, together with one conducted in June/July (Mission no. 
2002032), and alligned cruises in the Irminger sea, by a group from the UK, 
will provide data for modelling. Secondary objectives were: to measure a 
series of other biological/environmental variables (concentrations of the 
copepod Oithona, phytoplankton, bacterial, nutrient, oxygen and dissolved 
organic carbon concentrations); to determine biological rates (primary and 
bacterial production and microbial respiration); to determine levels of 
metabolism in zooplankton (by use of biochemical indices); to determine 
underwater light fields; and, to make standard hydrographic measurements 
(temperature, salanity). A final objective of the mission was the deployment 
of a mooring on Makkovik Bank. Further details of these activities are given 
in the reports of the individual scientists included below.














SCIENTIFIC BRIDGE LOG - CCGS HUDSON MISSION 2002075

 DATE     TIME EVENT  STN       LAT (N)   LONG (W) DEPTH    WIND     ACTIVITY
           (z)   #     #       Deg. Min. Deg. Min.  (m)    S(kt)D
————————  ———— ————— ————————  ——— ————— ——— ————— —————  —————————  —————————————————————————————
01/12/02  1407   1   L3_01      53 40.56  55 33.03   152  13 N       CTD in water
          1429   1   L3_01      53 40.17  55 32.31   152  13 N       CTD on board
          1439   2   L3_01      53 39.94  55 32.88   144  10 NE      Light meter in water
          1452   2   L3_01      53 39.71  55 32.75   141  10 NE      Light meter on board
          1512   3   L3_01      53 39.34  55 32.67   141  10 NE      Ring net in water
          1525   3   L3_01      53 39.19  55 32.63   141  10 NE      Ring net on board
          1532   4   L3_01      53 39.05  55 32.64   140  10 NE      Ring net in water
          1544   4   L3_01      53 39.89  55 32.65   140  10 NE      Ring net on board
          1549   5   L3_01      53 38.80  55 32.72   137  10 NE      Ring net in water
          1555   5   L3_01      53 38.72  55 32.80   137  10 NE      Ring net on board
          1606   6   L3_01      53 38.60  55 33.08   134  10 NE      Mooring release test in water
          1613   6   L3_01      53 38.52  55 33.24   134  10 NE      Mooring release test on board
02/12/02   302   7   Makk.Bnk.  55 24.60  58 3.80    100  20 NW      Mooring deployment
           303   8   Makk.Bnk.  55 24.49  58 3.55    100  20 NW      Mooring deployment
          1809   9   L3_03      53 59.30  55 15.09   150  30 W       Light meter in water
          1817   9   L3_03      53 59.30  55 15.09   150  30 W       Light meter on board
          1837  10   L3_03      53 59.39  55 15.20   146  30 W       Ring net in water
          1847  10   L3_03      53 59.38  55 15.32   146  30 W       Ring net on board
          1851  11   L3_03      53 59.33  55 15.23   148  25 W       Ring net in water
          1858  11   L3_03      53 59.37  55 15.26   148  25 W       Ring net on board
          1905  12   L3_03      53 59.39  55 15.17   146  25 W       Ring net in water
          1913  12   L3_03      53 59.45  55 15.13   147  25 W       Ring net on board
          1929  13   L3_03      53 59.63  55 15.25   147  25 W       CTD in water
          1956  13   L3_03      53 59.73  55 14.91   150  25 W       CTD on board
          2238  14   L3_05      54 29.55  54 45.33   196  15/20 W    CTD in water
          2306  14   L3_05      54 29.56  54 45.08   197  20/25 W    CTD on board
          2324  15   L3_05      54 29.56  54 44.85   199  15/20 W    Ring net in water
          2334  15   L3_05      54 29.56  54 44.60   199  15/20 W    Ring net on board
          2338  16   L3_05      54 29.56  54 44.41   199  15/20 W    Ring net in water
          2347  16   L3_05      54 29.58  54 44.16   198  20/25 W    Ring net on board
          2354  17   L3_05      54 29.55  54 43.84   200  20/25 W    Ring net in water
03/12/02     2  17   L3_05      54 29.57  54 43.63   200  20/25 W    Ring net on board
             7  18   L3_05      54 29.58  54 43.47   200  20/25 W    Ring net in water
            14  18   L3_05      54 29.53  54 43.34   200  20/25 W    Ring net on board
           102  19              54 36.92  54 35.52        20/25 W    XBT drop
           139  20              54 45.09  54 27.67        20/25 W    XBT drop
           144  21              54 46.22  54 26.43        20/25 W    XBT drop
           216  22              54 52.78  54 20.24        20/25 W    XBT drop
           252  23   L3_07      54 57.38  54 16.75   360  20/25 W    CTD in water
           321  23   L3_07      54 57.20  54 15.95        20/25 W    CTD on board
           406  24              55 2.60   54 10.48        20/25 W    XBT drop
           410  25              55 3.14   54 10.05        20/25 W    XBT drop
           523  26   L3_08      55 6.48   54 7.65   1034  20/25 W    CTD in water
           613  26   L3_08      55 6.41   54 8.17         25/30 W    CTD on board
           654  27   L3_08      55 6.73   54 8.22   1130  25/30 W    Multi-net in water
           740  27   L3_08      55 6.92   54 7.70         25/30 W    Multi-net on board
           801  28   L3_08      55 6.95   54 7.57         25/30 W    Ring net in water
           810  28   L3_08      55 6.97   54 7.59         25/30 W    Ring net on board
           816  29   L3_08      55 6.97   54 7.66         25/30 W    Ring net in water
           823  29   L3_08      55 7.02   54 7.61         25/30 W    Ring net on board
           829  30   L3_08      55 7.06   54 7.66         25/30 W    Ring net in water
           837  30   L3_08      55 7.08   54 7.63         25/30 W    Ring net on board
           856  31              55 9.00   54 5.65         25/30 W    XBT drop
           920  32              55 14.30  54 0.60         25/30 W    XBT drop
           934  33              55 17.18  53 57.67        25/30 W    XBT drop
           952  34              55 21.05  53 53.75        25/30 WSW  XBT drop
          1052  35   L3_10      55 24.55  53 48.03        25/30 WSW  Multi-net in water
          1150  35   L3_10      55 23.90  53 47.36        25/30 WSW  Multi-net on board
          1216  36   L3_10      55 23.46  53 46.91        25/30 WSW  Multi-net in water
          1409  36   L3_10      55 22.59  53 45.66        25/30 WSW  Multi-net on board
          1451  37   L3_10      55 22.29  53 44.74        25/30 WSW  Ring net in water
          1502  37   L3_10      55 22.19  53 44.38        25/30 WSW  Ring net on board
          1506  38   L3_10      55 22.13  53 44.07        25/30 WSW  Ring net in water
          1518  38   L3_10      55 21.91  53 43.45        25/30 WSW  Ring net on board
          1524  39   L3_10      55 21.89  53 43.29        25/30 WSW  Ring net in water
          1534  39   L3_10      55 21.91  53 42.81        25/30 WSW  Ring net on board


 DATE     TIME EVENT  STN       LAT (N)   LONG (W) DEPTH    WIND     ACTIVITY
           (z)   #     #       Deg. Min. Deg. Min.  (m)    S(kt)D
————————  ———— ————— ————————  ——— ————— ——— ————— —————  —————————  —————————————————————————————
          1552  40   L3_10      55 22.00  53 41.21        25/30 WSW  CTD in water
          1740  40   L3_10      55 22.10  53 40.59        25/30 WSW  CTD on board
          1756  41   L3_10      55 21.92  53 40.66        30/36 SW   Light meter in water
          1807  41   L3_10      55 21.89  53 40.61        25/30 SW   Light meter on board
          1840  42   L3_10      55 21.63  53 40.38        25/30 WSW  CTD in water
          1900  42   L3_10      55 21.51  53 40.24        25/30 WSW  CTD on board
          1924  43              55 25.16  53 37.25        25/30 WSW  XBT drop
          1943  44              55 29.21  53 34.69        25/30 WSW  XBT drop
          1959  45              55 32.45  53 32.80        25/30 WSW  XBT drop
          2014  46              55 35.74  53 30.89        25/30 WSW  XBT drop
          2035  47              55 40.66  53 28.20        25/30 WSW  XBT drop
          2054  48              55 45.18  53 25.96        25/30 WSW  XBT drop
          2148  49   L3_12      55 50.73  53 23.58        25/30 SW   Multi-net in water
          2242  49   L3_12      55 51.22  53 23.54        25/30 W    Multi-net on board
          2317  50   L3_12      55 51.64  53 23.47        25/30 W    CTD in water
04/12/02   118  50   L3_12      55 51.59  53 22.65        25/30 W    CTD on board
           138  51   L3_12      55 51.61  53 22.57        15 W       Ring net in water
           148  51   L3_12      55 51.61  53 22.55        15 W       Ring net on board
           152  52   L3_12      55 51.61  53 22.55        15/20 W    Ring net in water
           202  52   L3_12      55 51.65  53 22.52        15/20 W    Ring net on board
           206  53   L3_12      55 51.65  53 22.47        15/20 W    Ring net in water
           216  53   L3_12      55 51.66  53 22.44        15/20 W    Ring net on board
           243  54              55 55.33  53 18.89        15/20 W    XBT drop
           303  55              55 59.61  53 14.50        15/20 W    XBT drop
           323  56              56 3.85   53 10.11        15/20 W    XBT drop
           343  57              56 8.00   53 5.84         15/20 W    XBT drop
           406  58              56 12.85  52 0.80         15/20 W    XBT drop
           428  59              56 17.62  52 55.78        15/20 W    XBT drop
           453  60              56 22.94  52 50.33        15/20 W    XBT drop
           513  61              56 27.23  52 46.04        15/20 W    XBT drop
           555  62   L3_14      56 32.25  52 40.58        10/15 WNW  Ring net in water
           603  62   L3_14      56 32.35  52 40.53        10/15 WNW  Ring net on board
           607  63   L3_14      56 32.34  52 40.45        10/15 WNW  Ring net in water
           616  63   L3_14      56 32.37  52 40.24        10/15 WNW  Ring net on board
           623  64   L3_14      56 32.38  52 40.19        10/15 WNW  Ring net in water
           631  64   L3_14      56 32.42  52 39.96        10/15 WNW  Ring net on board
           705  65   L3_14      56 32.38  52 39.65        10/15 WNW  Multi-net in water
           803  65   L3_14      56 32.91  52 39.25        10/15 WNW  Multi-net on board
           848  66   L3_14      56 32.89  52 39.72        10/15 WNW  CTD in water
          1057  66   L3_14      56 32.82  52 38.57        10/15 WNW  CTD on board
          1123  67              56 35.96  52 34.70        20/25 NNW  XBT drop
          1145  68              56 40.73  52 30.16        25/30 NNW  XBT drop
          1210  69              56 45.47  52 25.50        25/30 WNW  XBT drop
          1232  70              56 49.93  52 20.93        25/30 WNW  XBT drop
          1252  71              56 54.13  52 16.68        20 NWN     XBT drop
          1257  72              56 55.40  52 15.41        20 NWN     XBT drop
          1312  73              56 49.47  52 26.28        20/25 NWN  XBT drop
          1333  74              57 2.88   52 7.87         20/25 NNW  XBT drop
          1353  75              57 7.18   52 3.57         15/20 N    XBT drop
          1414  76              57 11.59  51 59.31        15/20 N    XBT drop
          1519  77   L3_16      57 22.50  51 47.80        5/10 N     CTD in water
          1538  77   L3_16      57 22.28  51 47.66        5/10 N     CTD on board
          1552  78   L3_16      57 22.09  51 47.28        5/10 N     Light meter in water
          1601  78   L3_16      57 22.13  51 47.34        5/10 N     Light meter on board
          1630  79   L3_16      57 22.22  51 47.62        5/10 N     CTD in water
          1847  79   L3_16      57 21.73  51 46.91        5/10 N     CTD on board
          1903  80   L3_16      57 21.98  51 46.79        5/10 N     Multi-net in water
          2004  80   L3_16      57 22.24  51 46.20        5/10 N     Multi-net on board
          2033  81   L3_16      57 22.20  51 46.02        5/10 N     Multi-net in water
          2127  81   L3_16      57 22.34  51 46.07        5/10 N     Multi-net on board
          2151  82   L3_16      57 22.37  51 46.13        5/10 N     Ring net in water
          2200  82   L3_16      57 22.29  51 46.13        5/10 N     Ring net on board
          2204  83   L3_16      57 22.19  51 46.17        5/10 N     Ring net in water
          2213  83   L3_16      57 22.16  51 46.16        5/10 N     Ring net on board
          2219  84   L3_16      57 22.15  51 46.18        5/10 N     Ring net in water
          2227  84   L3_16      57 22.11  51 46.19        10/15 N    Ring net on board


 DATE     TIME EVENT  STN       LAT (N)   LONG (W) DEPTH    WIND     ACTIVITY
           (z)   #     #       Deg. Min. Deg. Min.  (m)    S(kt)D
————————  ———— ————— ————————  ——— ————— ——— ————— —————  —————————  —————————————————————————————
          2244  85   L3_16      57 22.16  51 46.31        10/15 N    Multi-net in water
05/12/02    56   85   L3_16     57 22.11  51 46.93        15 NW      Multi-net on board
           121   86             57 23.22  51 46.45        10 NW      XBT drop
           132   87             57 25.73  51 44.11        10 NW      XBT drop
           148   88             57 29.00  51 40.61        10/15 NWN  XBT drop
           204   89             57 32.30  51 37.08        10/15 NWN  XBT drop
           225   90             57 36.72  51 32.35        30/35 NNW  XBT drop
           243   91             57 40.50  51 28.28        30 NNW     XBT drop
           247   92             57 41.40  51 27.29        30 NNW     XBT drop
           256   93             57 43.22  51 25.36        30/35 NWN  XBT drop
           307   94             57 45.50  51 22.87        30/35 NWN  XBT drop
           319   95             57 47.90  51 20.24        30/35 NWN  XBT drop
           322   96             57 50.43  51 17.55        30/35 NWN  XBT drop
           346   97             57 55.43  51 14.28        30/35 NWN  XBT drop
           357   98             57 55.82  51 11.71        30/35 NWN  XBT drop
           408   99             57 58.08  51 9.23         30/35 NWN  XBT drop
           419  700             58 0.46   51 6.66         30/35 NWN  XBT drop
           434  101             58 3.45   51 3.39         30/35 NWN  XBT drop
           448  102             58 6.54   51 0.02         30/35 NWN  XBT drop
           504  103             58 9.88   50 57.00        30/35 NWN  XBT drop
           541  104   L3_18     58 12.78  50 52.53  3475  20/25 NWN  Multi-net in water
           644  104   L3_18     58 13.57  50 51.93        30/35 NW   Multi-net on board
           728  105   L3_18     58 12.82  50 52.34        30/35 NW   Ring net in water
           739  105   L3_18     58 12.77  50 51.88        30/35 NW   Ring net on board
           742  106   L3_18     58 12.78  50 51.78        30/35 NW   Ring net in water
           750  106   L3_18     58 12.67  50 51.46        30/35 NW   Ring net on board
           756  107   L3_18     58 12.43  50 51.27        30/35 NW   Ring net in water
           805  107   L3_18     58 12.44  50 50.99        30/35 NW   Ring net on board
           821  108   L3_18     58 12.19  50 50.37        30/35 NW   CTD in water
          1051  108   L3_18     58 12.57  50 47.80        30/35 W    CTD on board
          1123  109             58 16.60  50 43.87        30/35 W    XBT drop
          1134  110             58 18.89  50 41.84        30/35 W    XBT drop
          1152  111             58 22.78  50 38.37        25/30 WNW  XBT drop
          1212  112             58 26.40  50 34.50        35/40 W    XBT drop
          1230  113             58 30.22  50 30.49        25/30 WNW  XBT drop
          1252  114             58 35.02  50 25.14        30/35 NWW  XBT drop
          1313  115             58 39.35  50 20.22        25/30 W    XBT drop
          1332  116             58 43.40  50 15.87        25/30 W    XBT drop
          1352  117             58 41.75  50 11.62        25/30 W    XBT drop
          1413  118             58 52.37  50 7.00         35/40 W    XBT drop
          1433  119             58 56.77  50 2.83         35/40 W    XBT drop
          1519  120   L3_20     59 3.92   49 56.84        30/35 W    CTD in water
          1539  120   L3_20     59 3.86   49 56.76        30/35 WNW  CTD on board
          1559  121   L3_20     59 3.93   49 56.65        30/35 WNW  Light meter in water
          1615  121   L3_20     59 3.94   49 56.67        30/35 WNW  Light meter on board
          1650  122   L3_20     59 4.07   49 56.44        35/40 WNW  CTD in water
          1907  122   L3_20     59 4.80   49 54.83        25/30 WNW  CTD on board
          1916  123   L3_20     59 4.77   49 54.86        20/25 WNW  Multi-net in water
          2028  123   L3_20     59 5.08   49 56.26        30/40 WNW  Multi-net on board
          2121  124             59 7.92   49 50.05        30/40 WNW  XBT drop
          2155  125             59 11.24  49 42.39        35 W XBT   drop
          2209  126             59 12.16  49 38.29        35 W XBT   drop
          2226  127             59 13.78  49 33.86        35/40 WS   XBT drop
          2247  128             59 18.26  49 29.78        35/40 WS   XBT drop
          2348  129             59 27.14  49 27.83        35/40 WN   XBT drop
06/12/02   120  130             59 35.12  49 31.80        25/30 W    XBT drop
           136  131             59 36.89  49 27.27        30/35 W    XBT drop
           204  132             59 39.94  49 19.22        30/35 W    XBT drop
           219  133             59 41.82  49 14.45        30/35 W    XBT drop
           315  134   L3_22     59 44.85  49 9.71   3155  25/30 W    Multi-net in water
           408  134   L3_22     59 44.72  49 10.18  3155  35/40 W    Multi-net on board
           447  135   L3_22     59 44.66  49 10.13  3155  25/30 W    CTD in water
           700  135   L3_22     59 45.10  49 8.55   3155  15/25 W    CTD on board
           720  136   L3_22     59 45.11  49 9.02         15/20 W    Ring net in water
           730  136   L3_22     59 45.20  49 8.66         15/20 W    Ring net on board
           736  137   L3_22     59 45.20  49 8.54         15/20 W    Ring net in water


 DATE     TIME EVENT  STN       LAT (N)   LONG (W) DEPTH    WIND     ACTIVITY
           (z)   #     #       Deg. Min. Deg. Min.  (m)    S(kt)D
————————  ———— ————— ————————  ——— ————— ——— ————— —————  —————————  —————————————————————————————
           744  137   L3_22     59 45.25  49 8.37         15/20 W    Ring net on board
           749  138   L3_22     59 45.28  49 8.24         20/25 W    Ring net in water
           758  138   L3_22     59 45.38  49 8.11         20/25 W    Ring net on board
           829  139             59 49.27  49 3.20         20/25 W    XBT drop
           841  140             59 51.94  49 0.14         15/20 W    XBT drop
           857  141             59 55.48  48 56.56        15/20 W    XBT drop
           910  142             59 58.50  48 53.48        15/20 W    XBT drop
           922  143             60 1.12   48 50.85        15/20 W    XBT drop
           936  144             60 4.16   48 47.94        15/20 W    XBT drop
           949  145             60 7.24   48 45.01        10/15 SW   XBT drop
          1003  146             60 10.49  48 41.99        10/15 SW   XBT drop
          1034  147   L3_24     60 11.06  48 41.48        15/20 W    Multi-net in water
          1138  147   L3_24     60 12.76  48 42.97        15/20 SW   Multi-net on board
          1159  148   L3_24     60 13.09  48 43.12        15/20 S    Multi-net in water
          1350  148   L3_24     60 14.19  48 45.82        15/20 S    Multi-net on board
          1409  149   L3_24     60 14.38  48 46.28        15/20 SW   Light meter in water
          1420  149   L3_24     60 14.42  48 46.61        15/20 SW   Light meter on board
          1450  150   L3_24     60 14.47  48 47.06        15/20 SW   Ring net in water
          1500  150   L3_24     60 14.48  48 48.24        15/20 SW   Ring net on board
          1505  151   L3_24     60 14.51  48 48.34        15/20 SW   Ring net in water
          1513  151   L3_24     60 14.55  48 48.56        15/20 SW   Ring net on board
          1518  152   L3_24     60 14.60  48 48.70        15/20 SW   Ring net in water
          1527  152   L3_24     60 14.72  48 48.84        15/20 SW   Ring net on board
          1544  153   L3_24     60 14.82  48 49.44        10/15 SW   CTD in water
          1600  153   L3_24     60 15.01  48 49.78        20/25 SW   CTD on board
          1706  154   L3_24     60 10.54  48 40.10        10/15 SW   CTD in water
          1857  154   L3_24     60 11.98  48 41.09        15/20 SW   CTD on board
          1921  155             60 14.67  48 37.36        5/10 SW    XBT drop
          1932  156             60 16.94  48 34.82        5/10 SW    XBT drop
          1945  157             60 19.35  48 32.28        5/10 SW    XBT drop
          2029  158   L3_26     60 22.53  48 22.48   610  5/15 SW    Multi-net in water
          2057  158   L3_26     60 23.02  48 29.11        5/115 SW   Multi-net on board
          2151  159   L3_26     60 20.73  48 31.20        5/10 SWS   CTD in water
          2302  159   L3_26     60 22.31  48 33.42        10/15 SW   CTD on board
          2326  160   L3_26     60 22.68  48 34.89        10/15 SW   Ring net in water
          2336  160   L3_26     60 22.89  48 35.37        10/15 S    Ring net on board
          2340  161   L3_26     60 22.99  48 35.57        10/15 S    Ring net in water
          2348  161   L3_26     60 23.17  48 35.90        5/10 S     Ring net on board
          2353  162   L3_26     60 23.28  48 36.05        10/15 S    Ring net in water
07/12/02     1  162   L3_26     60 23.40  48 36.27        5/10 S     Ring net on board
            20  163             60 25.31  48 33.43        10/15      SES XBT drop
            30  164             60 26.87  48 30.51        10/15      SES XBT drop
            45  165             60 29.02  48 25.81        5/10       SES XBT drop
           134  166   L3_28     60 34.15  48 13.75   131  5/10       SE Ring net in water
           141  166   L3_28     60 34.21  48 13.90   126  15/20      SE Ring net on board
           146  167   L3_28     60 34.31  48 14.00   146  15/20      SE Ring net in water
           152  167   L3_28     60 34.46  48 14.11        15/20      SE Ring net on board
           157  168   L3_28     60 34.59  48 14.19        15/20      SE Ring net in water
           203  168   L3_28     60 34.63  48 14.29        15/20      SE Ring net on board
           217  169   L3_28     60 34.81  48 14.71        15/20      SE CTD in water
           229  169   L3_28     60 34.94  48 14.98        15/20      SE CTD on board
           434  170   L3_25     59 17.68  48 32.72  2630  15/20      SSE CTD in water
           545  170   L3_25     59 19.19  48 35.40        10/15      SSE CTD on board, Cable shortout
           807  171   L3_23     59 59.03  48 53.60        5/15       SE CTD in water
           840  171   L3_23     59 59.31  48 53.66        5/15       SE CTD on board, Cable shortout
           907  172   L3_23     59 59.38  48 53.63        10/15      S Multi-net in water
          1007  172   L3_23     59 59.24  48 53.89        10/15      S Multi-net on board
          1315  173   L3_21     59 29.03  49 28.38        15/20      SEE CTD in water
          1448  173   L3_21     59 29.30  49 28.82        10/15      SEE CTD on board
          1458  174   L3_21     59 29.32  49 28.89        5/10       SEE Light meter in water
          1508  174   L3_21     59 29.34  49 28.90        10/15      SEE Light meter on board
          1523  175   L3_21     59 29.33  49 29.04        10/15      SSE Multi-net in water
          1610  175   L3_21     59 29.18  49 29.14        10/15      SE Multi-net on board
          1631  176   L3_21     59 29.10  49 28.76        10 S       Multi-net in water
          1800  176   L3_21     59 28.97  49 28.17        5 S        Multi-net on board
          2056  177   L3_20     59  3.80  49 51.12        10/15      N Multi-net in water


 DATE     TIME EVENT  STN       LAT (N)   LONG (W) DEPTH    WIND     ACTIVITY
           (z)   #     #       Deg. Min. Deg. Min.  (m)    S(kt)D
————————  ———— ————— ————————  ——— ————— ——— ————— —————  —————————  —————————————————————————————
          2145  177   L3_20     59  3.88  49 56.88        10/15      N Multi-net on board
          2225  178   L3_20     59  3.14  49 57.94        15         NEN Ring net in water
          2231  178   L3_20     59  3.14  49 58.08        15/20      E Ring net on board
          2236  179   L3_20     59  3.09  49 58.10        15/20      E Ring net in water
          2241  179   L3_20     59  3.06  49 58.17        15/20      E Ring net on board
          2246  180   L3_20     59 3.02   49 58.23        15/20      E Ring net in water
          2251  180   L3_20     59 3.03   49 58.34        15/20      E Ring net on board
08/12/02   127  181   L3_19     58 38.25  50 25.50        15/20      NNE Multi-net in water
           312  181   L3_19     58 38.29  50 24.80        15/20      NE Multi-net on board
           345  182   L3_19     58 38.13  50 25.32        15/20      E Multi-net in water
           432  182   L3_19     58 37.71  50 24.91        15/20      E Multi-net on board
           512  183   L3_19     58 37.91  50 25.60        15/20      E CTD in water
           624  183   L3_19     58 37.36  50 26.81        15/20      E CTD on board
           724  184             58 29.13  50 41.99        15/20      E XBT drop
           738  185             58 26.96  50 46.04        15/20      E XBT drop
           755  186             58 24.29  50 50.87        15/20      E XBT drop
           819  187             58 20.44  50 57.82        15/20      E XBT drop
           824  188             58 19.69  50 59.25        15/20      E XBT drop
           843  189             58 16.75  51 4.55         15/20      E XBT drop
           900  190             58 13.91  51 9.71         15/20      E XBT drop
           915  191             58 11.19  51 14.66        25/30      WNW XBT drop
           934  192             58 8.63   51 1.31         25/30      WNW XBT drop
           944  193             58 6.60   51 20.41        25/30      NW XBT drop
           954  194             58 4.24   51 20.40        25/30      NW XBT drop
          1004  195             58 2.00   51 20.39        25/30      NW XBT drop
          1015  196             57 54.46  51 20.40        25/30      NW XBT drop
          1026  197             57 57.06  51 20.40        25/30      NW XBT drop
          1038  198             57 54.28  51 20.39        25/30      NW XBT drop
          1050  199             57 51.61  51 20.41        20/25      NW XBT drop
          1124  200   L3_17     57 47.83  51 20.62        20/25      NWW Multi-net in water
          1215  200   L3_17     57 48.00  51 20.60        20/25      NWW Multi-net on board
          1249  201   L3_17     57 47.88  51 20.98        20 W       CTD in water
          1419  201   L3_17     57 47.30  51 21.26        15/25      W CTD on board
          1436  202   L3_17     57 47.17  51 20.99        10/20      W Light meter in water
          1446  202   L3_17     57 47.00  51 21.06        15/20      W Light meter on board
          2039  203   L3_15     56 57.32  52 14.32        10/15      SE Multi-net in water
          2126  203   L3_15     56 57.01  52 14.52        5/10       SE Multi-net on board
          2156  204   L3_15     56 57.41  52 14.39        15/20      E CTD in water
          2255  204   L3_15     56 57.40  52 14.48        10/20      SSW CTD on board
09/12/02   341  205   L3_13     56 6.72   53 7.15   3310  20/25      SW Multi-net in water
           523  205   L3_13     56 6.53   53 7.23   3310  20/25      SW Multi-net on board
           555  206   L3_13     56 6.82   53 6.92         15/20      SSW Multi-net in water
           648  206   L3_13     56 6.60   53 7.24         20         SSW Multi-net on board
           729  207   L3_13     56 6.82   53 6.84         15/20      SSW CTD in water
           825  207   L3_13     56 6.79   53 6.92         15/20      SSW CTD on board
           922  208             55 57.33  53 16.80        20/25      SSW XBT drop
          1118  209   L3_11     55 36.77  53 37.58        15/20      SW Multi-net in water
          1205  209   L3_11     55 36.50  53 37.00        10/15      SW Multi-net on board
          1215  210   L3_11     55 36.50  53 36.79        10/15      SW CTD in water
          1317  210   L3_11     55 36.45  53 36.53                   Light airs CTD on board
12/12/02  1103  211   HL_2      44 17.04  63 19.03        20/25      E CTD in water
          1119  211   HL_2      44 17.00  63 18.97        20/25      E CTD on board
          1147  212   HL_2      44 16.97  63 18.98        20/25      E CTD in water
          1200  212   HL_2      44 17.01  63 19.98        25/30      SEE CTD on board
          1218  213   HL_2      44 17.05  63 19.13        25/30      SEE Ring net in water
          1227  213   HL_2      44 17.00  63 19.10   160  20/25      SE Ring net on board
          1236  214   HL_2      44 17.00  63 19.13   120  20/25      SE Ring net in water
          1244  214   HL_2      44 16.94  63 19.10   169  15/20      SE Ring net on board
          1250  215   HL_2      44 16.96  63 19.19   166  20/25      SE Ring net in water
          1300  215   HL_2      44 17.00  63 19.17        20/30      SE Ring net on board
          1313  216   HL_2      44 17.06  63 19.21        20/25      SE CTD in water
          1330  216   HL_2      44 17.09  63 19.34        15/20      E CTD on board
          


REPORTS ON INDIVIDUAL PROJECTS:

Mooring programme 
(M. Scotney)

Two instrumented moorings were deployed December 1st, 2002 on Makkovik Bank, 
approximate position 55 24.50 N and 58 03.70 W. One mooring contained an Ice 
Profiling Sonar to measure ice thickness and the other an Acoustic Doppler 
Current Profiler to measure ice movement and water currents.

These moorings are to monitor the freshwater flux within the pack ice along 
the Labrador Shelf as part of Climate studies and contributing to 
international ASOF (Arctic, Sub-Arctic Ocean Flux) program. Funded through 
PERD Climate program sector. Recovery is scheduled for July 2003.

Overwintering vertical and spatial distribution of Calanus finmarchicus along 
the AR7W section across the Labrador Sea. (Erica Head, Ed Horne, Tim Perry)

The main aim of the cruise was to collect samples to enable us to establish 
the overwintering depth distribution of the copepod Calanus fimarchicus in 
the Labrador Sea. We sampled zooplankton using a Multi-net sampler fitted 
with 200 mm mesh nets at a total of 17 stations of the L3 (AR7W) section 
between Hamilton Bank and Cape Desolation (Greenland). At 11 of these 
stations we sampled to 1000 m or to the bottom (in the slope regions), while 
at 6 we sampled to 2000 m. Depth strata were every 200 m between 1000 m and 
the surface, and every 250 m between 2000 and 1000 m. The Multi-net system 
worked flawlessly and while most times wind strengths were below 35 knots, at 
one station we managed a totally successful recovery when wind strengths had 
reached 40-50 knots. A total of 111 formalin preserved samples were taken for 
species identification and enumeration. Some tows were given to a colleague 
(Lidia Yebra Mora) from the Plymouth Marine Laboratories in UK for the 
analysis of levels of enzyme indicative of levels of metabolic activity in 
selected stages and species of copepods. These samples were preserved in 
liquid nitrogen.

Sampling stations at which Multi-net tows were carried out.


                               Start 
Tow  Event  Station   Date     time    Depth  ranges
 #     #                      (local)
———  —————  ———————  ———————  ———————  ———————————————————————————————————————————————————
 01    26    L3-8    3.12.02   01.26   840-800, 800-600, 600-400, 400-200, 200-0
 02    35    L3-10   3.12.02   06.45   800-600, 600-400, 400-200, 200-0
 03    36    L3-10   3.12.02   08.20   1500-1250, 1250-1000, 1000-800, 800-0*
 04    49    L3-12   3.12.02   17.40   1000-800, 800-600, 600-400, 400-200, 200-0
 05    65    L3-14   4.12.02   03.05   1000-800, 800-600, 600-400, 400-200, 200-0
 06    80    L3-16   4.12.02   15.00   1000-800, 800-600, 600-400, 400-200, 200-0
 07    81    L3-16   4.12.02   18.45   2000-1750, 1750-1500, 1500-1250, 1250-1000, 1000-0*
 08   104    L3-18   5.12.02   01.45   1000-800, 800-600, 600-400, 400-200, 200-0
 09   123    L3-20   5.12.02   15.20   1000-800, 600-400, 400-200, 200-0
 10   134    L3-22   5.12.02   23.15   1000-800, 800-600, 600-400, 400-200, 200-0
 11   147    L3-24   6.12.02   06.30   1000-800, 800-600, 600-400, 400-200, 200-0
 12   148    L3-24   6.12.02   08.00   2000-1750, 1750-1500, 1500-1250, 1250-1000, 1000-0*
 13   158    L3-26   6.12.02   16.30   540-400, 400-300, 300-200, 200-100, 100-0
 14   172    L3-23   7.12.02   05.13   1000-800, 800-600, 600-400, 400-200, 200-0
 15   175    L3-21   7.12.02   11.15   1000-800, 800-600, 600-400, 400-200, 200-0
 16   176    L3-21   7.12.02   12.32   2000-1750, 1750-1500, 1500-1250, 1250-1000, 1000-0*
 17   177    L3-20   7.12.02   16.52   1000-800, 800-600, 600-400, 400-200, 200-0
 18   181    L3-19   7.12.02   21.30   2000-1750, 1750-1500, 1500-1250, 1250-1000, 1000-0*
 19   182    L3-19   7.12.02   23.53   1000-800, 800-600, 600-400, 400-200, 200-0
 20   200    L3-17   8.12.02   07.25   1000-800, 800-600, 600-400, 400-200, 200-0
 21   203    L3-15   8.12.02   16.39   1000-800, 800-600, 600-400, 400-200, 200-0
 22   205    L3-13   8.12.02   23.44   2000-1750, 1750-1500, 1500-1250, 1250-1000, 1000-0*
 23   206    L3-13   9.12.02   02.00   1000-800, 800-600, 600-400, 400-200, 200-0
 24   209    L3-11   9.12.02   07.19   1000-800, 800-600, 600-400, 400-200, 200-0

*Samples given to Lidia Yebra Mora for biochemical analysis.


Continuous Flow Multisensor System 
(Jeff Anning)


2002-075 Station
Log

Station  Event    Date
———————  —————  ————————
 L3-01      1   12/01/02
 L3-03     13   12/02/02
 L3-05     14   12/02/02
 L3-07     23   12/03/02
 L3-08     27   12/03/02
 L3-10     42   12/03/02
 L3-12     50   12/03/02
 L3-14     66   12/04/02
 L3-16     77   12/04/02
 L3-18    108   12/05/02
 L3-20    120   12/05/02
 L3-22    135   12/06/02
 L3-24    153   12/06/02
 L3-26    159   12/06/02
 L3-28    169   12/06/02
 L3-21    173   12/07/02
 L3-19    183   12/08/02
 L3-17    201   12/08/02
 L3-15    204   12/08/02
 L3-13    207   12/09/02
 L3-11    210   12/09/02


Determination of Primary Production rates 
(Jeff Anning)

Water samples for primary production experiments were collected from the 
rosette. For each incubation, 33 aliquots were inoculated with sodium 
bicarbonate 14C and then incubated at in situ temperatures at 30 light levels 
( + 3 dark bottles) for approximately 3 hours. At the end of the incubation 
period the cells were harvested onto GF/F glass fibre filters for later 
counting in a scintillation counter.

Photosynthesis/Irradiance incubations were conducted at the following 
stations:


2002-075 PI Log

Station  Event/    Date    Time    ID     Depth
          CTD              GMT
———————  ——————  ————————  —————  ——————  —————
 L3-01      1    12/01/02  14:00  259575     4
                                  259567    20
 L3-03     13    12/02/02  19:30  259592     4
                                  259584    30
 L3-10     42    12/03/02  19:00  259666     4
                                  259660    10
 L3-16     77    12/04/02  15:30  259732     4
                                  259724    30
 L3-20    120    12/05/02  15:30  259794     4
                                  259787    20
 L3-24    153    12/06/02  16:00  259856     4
                                  259849    20
 L3-21    173    12/07/02  10:45  259938     4
                                  259931    30
 L3-17    201    12/08/02  14:20  259974     4
                                  259967    20
 L3-11    210    12/09/02  13:15  260033     4


Optical Measurements 
(Edward Horne)

Once per day for the period Dec 1- Dec 8 an optical profile was made with a 
Biospherical Instruments Mer2040 profiler to a depth of 100m. The locations 
for the stations are the same as those for the PI measurements. In addition, 
water samples were draw in the upper 100m of the CTD profile at the station 
and analyzed for Colored Dissolved Organic Matter (CDOM). CDOM was low for 
all stations and with chlorophyll concentrations of less than 1 micro gram 
per liter the water was very clear and blue light penetrated best.


Stable Isotope Studies of Carbon and Nitrogen (nitrate and ammonium) 
Utilization by Phytoplankton 
(Glen Harrison)

This work represents a continuation of research begun in 1994 to determine 
the primary productivity (in terms of inorganic carbon and nitrogen) of 
phytoplankton in the Labrador Sea.  Carbon dioxide (CO2), nitrate (NO3) and 
ammonium (NH4) utilization rate measurements, due to the expectation of icing 
weather conditions on deck this time of year, were modified from the standard 
deck incubation protocol to P-I style experiments performed in the lab, 
similar to those described by J. Anning. A total of 8 experiments were 
conducted (see Table). Carbon and nitrogen-based primary productivity rates 
along the L3 line will be related to vertical fluxes of particulate biogenic 
carbon and nitrogen derived from our sediment trap deployed on the “Bravo” 
mooring in July and scheduled for recovery in July, 2003.

In addition to productivity measurements, samples from one deep cast (L3_17) 
were collected for determination of suspended particulate organic carbon 
(POC) and nitrogen (PON) from surface to ~1,000 m.


Table: Sampling for stable isotope productivities and particulates.

                 Date     Site   EV#  15N/13C  POC/PON
               —————————  —————  ———  ———————  ———————
               01-Dec-02  L3_01  001     x
               02-Dec-02  L3_03  013     x
               03-Dec-02  L3_10  042     x
               04-Dec-02  L3_16  077     x
               05-Dec-02  L3_20  120     x
               06-Dec-02  L3_24  153     x
               07-Dec-02  L3_21  173     x
               08-Dec-02  L3_17  201     x        x
   
   
Bacterial abundance and production (Paul Dickie for Dr. Bill Li) Samples were 
collected for subsequent Flow Cytometric analysis from almost all depths of 
all CTDs at all stations occupied on the cruise. These samples were preserved 
with 1% final concentration of filtered paraformaldehyde and frozen in liquid 
nitrogen. They will be analyzed at BIO by Dr. Bill Li for marine pico-
phytoplankton, bacteria and viruses.  At all stations occupied (except #s 8 
and 18), water from all depths from surface down to at least 100 meters was 
incubated with tritiated leucine to determine rates of increase of 
heterotrophic (bacterial) biomass. A total of 19 Depth Profiles were 
obtained.  For most stations (17/24), the uppermost sample (closest to the 
surface) was checked for nanozooplankton.  These samples were preserved with 
1% formaldehyde, filtered in 30 ml aliquots onto 0.8 micron polycarbonate 
filters and stained with DAPI dye. They will be kept frozen until counting 
can be done with a fluorescence microscope.


Zooplankton studies 
(Lidia Yebra Mora)


Oithona project

In order to study distribution of Oithona and other species in the Labrador 
Sea, vertical nets were performed every other station from St. Johns to 
Greenland along the L3 transect.  Samples were collected with Bongo (63 um) 
and WP2 nets (200 um), from 0 to 100 m, and fixed with formalin 4%. At PML, 
species abundance and distribution will be determined, and compared with the 
data obtained at the same time in the Irminger Sea.

Zooplankton biomass and growth

Bongo and WP2 nets were used also to collect ZP from 0-100 m, along line L3. 
On board, samples were fractionated by size: 63-200, 200-450, 450-1000 and 
>1000 um, and frozen in liquid Nitrogen. At PML (Plymouth Marine Laboratory), 
biomass and structural growth will be determined. Biomass will be estimated 
as protein content, following the method of Lowry et al. (1951), modified by 
Rutter (1967). Growth will be approached by the method of Chang et al. 
(1984), modified by Yebra (2002). Relationship between hydrography and growth 
will be also studied.

Calanus finmarchicus, growth or dormancy?

When available groups of 20 CV of C. finmarchicus were selected from the 
vertical hauls and from the MultiNet, and stored in liquid Nitrogen. At PML, 
biomass and growth of copepods collected with vertical nets (0-100 m) will be 
compared with the ones from the MultiNet (0-1000  m). Growth rates will be 
also compared with growth of C. finmarchicus collected in the same period in 
the Irminger basin with the ARIES net.

When available, groups of 10 CV C. finmarchicus were collected from the 
Multinet tows (0-1000 m) and frozen in liquid Nitrogen. Samples will be sent 
to Aberdeen to analyse lipid content. Data will be also compared with the 
ones from the Irminger Sea, at the same period.


Stations sampled for zooplankton studies by L. Yebra Mora

Event    Station   Date    Oithona  Zooplankt  CV surf g  CV MN g  CV Mn l
———————  ———————  ———————  ———————  —————————  —————————  ———————  ———————
3-5        L3-1   1/12/02     X         X
10-12      L3-3   2/12/02     X         X
15-18      L3-5   2/12/02     X         X
28-30      L3-8   3/12/02     X         X
37-39      L3-10  3/12/02     X         X          X         X       X
51-53      L3-12  4/12/02     X         X
62-64      L3-14  4/12/02     X         X
82-84      L3-16  4/12/02     X         X          X         X       X
105-107    L3-18  5/12/02     X         X
136-138    L3-22  6/12/02     X         X
150-152    L3-24  6/12/02     X         X          X         X
160-162    L3-26  6/12/02     X         X
166-168    L3-28  7/12/02     X         X
176        L3-21  7/12/02                                    X       X
178-180    L3-20  7/12/02     X         X
181        L3-19  8/12/02                                    X       X
           L3-13  9/12/02                                    X       X


Organic carbon inventory and utilization rate (J. Bugden for P. Kepkay)

In order to better understand the cycling of carbon and the mechanisms 
controlling it in the Labrador Sea, it is necessary to examine the pool of 
total organic carbon (TOC), and look at the activity of the microbial 
community in the water column. By examining the rate of respiration and size 
fractionating the TOC, information on the fate of carbon in this marine 
environment may be elucidated.

During CCGS Hudson cruise 2002-075 nine (9) stations were sampled at the 
surface and at the chlorophyll maximum (usually between 10 and 30m depth) for 
gross microbial community respiration, and for the same stations only the 
surface was sampled for size fractionation of TOC (ultrafiltration). The 
stations sampled are listed below. TOC depth profiles were also collected 
from the stations indicated in the table below.






List of stations and what was sampled by Jay Bugden on CCGS Hudson cruise 
2002-075.

          Station    Respiration  Ultrafiltration  DOC Profile
        ———————————  ———————————  ———————————————  ———————————
        AR7W site 1       X              X              X
        AR7W site 2
        AR7W site 3       X              X              X
        AR7W site 4
        AR7W site 5                                     X
        AR7W site 6
        AR7W site 7                                     X
        AR7W site 8                                     X
        AR7W site 9
        AR7W site 10      X              X              X
        AR7W site 11      X              X              X
        AR7W site 12      X                          
        AR7W site 13      X                          
        AR7W site 14      X                          
        AR7W site 15      X                          
        AR7W site 16      X              X              X
        AR7W site 17      X              X              X
        AR7W site 18      X                          
        AR7W site 19      X                          
        AR7W site 20      X              X              X
        AR7W site 21      X              X              X
        AR7W site 22      X                          
        AR7W site 23
        AR7W site 24      X              X              X
        AR7W site 25
        AR7W site 26      X                          
        AR7W site 27
        AR7W site 28      X                          


Physical Oceanography (Allyn Clarke/Igor Yashayaev)

CTD stations

Full depth CTD profiles were obtained along WOCE Hydrographic Repeat section 
AR7W using a Seabird Model 9 dual sensor system mounted in a 24 bottle 
Seabird rosette. The following sensors were used on all casts:

           Sensor           Primary or  Serial #  Manufacture Date
                            Secondary
      ————————————————————  ——————————  ————————  ————————————————
      Temperature           primary     03P2129   14-Jun-2000
      Conductivity          primary     041730    07-Jun-1996
      Pressure                          51403     20-Nov-1992
      Temperature           secondary   03P2303   03-Dec-1997
      Conductivity          secondary   041874    21-Feb-1997
      Altimeter
      Fluorometer, chelsea              088172    10-Feb-1997
      Oxygen, SBE           primary     430042    16-May-2001
      Oxygen, SBE           secondary   430133    16-May-2001


The following sites were sampled

Site   Operation  Maximum       Site   Operation  Maximum 
           #      Depth                    #      Depth
—————  —————————  ———————————   —————  —————————  ———————————————————————————
L3_01      1      full depth    L3_15     204     1600 metres
L3_02             not sampled   L3_16      79     full depth
L3_03     13      full depth    L3_17     201     2300 metres
L3_04             not sampled   L3_18     108     full depth
L3_05     15      full depth    L3_19     183     2100 metres
L3_06             not sampled   L3_20     122     full depth
L3_07     23      full depth    L3_21     173     2300 metres
L3_08     27      full depth    L3_22     135     full depth
L3_09             not sampled   L3_23     171     804 metres (splice failure)
L3_10     40      full depth    L3_24     154     full depth
L3_11    210      1450 metres   L3_25     170     full depth
L3_12     50      full depth    L3_26     159     full depth
L3_13    207      1600 metres   L3_27             not sampled
L3_14     66      full depth    L3_28     169     full depth


Water samples were drawn for oxygen concentration, nutrients and salinities. 
The samples for oxygen and salinity were processed at sea. The nutrient 
samples were frozen and returned to BIO for analysis.


Thermal structure of the upper ocean from XBT (Expendable Bathythermographs).

Every spring-summer BIO carries out physical, chemical and biological 
observations in the Labrador Sea along WOCE Hydrographic Repeat section AR7W 
(map). In 2002 this line was resurveyed in the end of the year, providing 
unique early winter measurements of the seawater state and biomass (Cruise 
2002075, CCGS Hudson, Nov.29–Dec.12, 2002, Chief scientist: Erica Head).

In addition to the CTD profiles along section AR7W/L3 (map), 105 XBT (Sparton 
T7) probes were dropped with a spacing of 5 miles and less providing the 
measurements from the sea surface to 830 m at the full cruising speed of the 
ship (15 knots). The vertical resolution of the measurements is 0.6-0.8 m. 
Continuous deployment of XBT along with the CTD casts provides a detailed 
thermal survey of the upper 800 m between the Labrador and Greenland shelves 
(the section plot is based on the data from the eastward passage of the 
line). A homogeneous layer up to 160 m thick created by the vertical mixing 
of the cold season is clearly seen through the western and central regions.

The warm (>4.5°C) and salty Irminger Current (on the Greenland side), its 
warm core (>6°C) and sharp front are clearly resolved by the XBT profiles. A 
chain of small eddies with the warm cores between 150 and 200 m and 
horizontal scales between 20 and 45 km span over 200 km from the Irminger 
Current and are presumably shed from this current. This relatively deep 
location of their cores indicates that the cooling and mixing of the upper 
150 m has also already started in the eastern part.

Another warm water flow can be identified offshore the Labrador slope. It is 
1.6°C colder than the Irminger Current, but still forms a strong contrast 
with the shelf and Labrador Current above and inshore. This warm flow has 
been strongly altered by the mixing and was capped by 150 m of cold water.

The XBT profiles collected on the eastward passage of ARW7/L3 reveal a strong 
warm core eddy, coincidently centred at the deepest point in the middle of 
the line. This eddy was deeper than 800 m and at the crossing with the 
section its size was about 45 km (resolved by 12 XBT profiles). However, we 
were unable to identify the exact location of the centre of the eddy off to 
the section line. Below 110 m the eddy was up to 1C warmer the surrounding 
water, above 100 m the eddy was covered with cold mixed water similar to that 
in the other XBT profiles. Four days later after we found the eddy we dropped 
16 more XBTs along a north to south section approaching L3_17 in order to 
better define this eddy and planned a deep CTD station at the station L3_17, 
where the warmest core was first found. This section captured the eddy, 
however it was shifted 25 km north from its previous location. The CTD cast 
at L3_17 8th as of December did not show any signs of the eddy (on the 4th 
the eddy’s centre was found right at the location of L3_17, but a CTD cast 
wasn’t conducted at that time).

Warm and cold eddies play an important role in physical and biological 
processes in the Labrador Sea and are well described by moored and remote 
measurements, however we lack direct observations of water mass and 
biological structure of these formations. Hence, in the planning of future 
missions to the Labrador Sea, we suggest to consider a research opportunity 
if a distinct and deep eddy was identified from XBT or remote observations.




CCHDO DATA PROCESSING NOTES

Date        Person        Data Type  Action            Summary
——————————  ————————————  —————————  ————————————————  ———————————————————————————————————
2013-12-02  Staff, CCHDO  CrsRpt     Website Update    Available under 'Files as received'
            The following files are now available online under 'Files as received', 
            unprocessed by the CCHDO.
            cr2002075.pdf

2013-12-02  Staff, CCHDO  CTD        Website Update    Available under 'Files as received'
            The following files are now available online under 'Files as received', 
            unprocessed by the CCHDO.
            18HU20021129_CTD.zip

2014-06-09  Lee, Rox      Maps       Website Update    Map created
            ==============================
            18HU20021129 processing - Maps
            ==============================

            2014-06-09
            R Lee
            .. contents:: :depth: 2

            Process
            =======
            - Maps created from 18HU20021129_CTD.zip

            Directories
            ===========
            :working directory:
            /data/co2clivar/atlantic/ar07w/ar07w_18HU20021129/original/2014.06.09_Maps_RJL
            :cruise directory:
            /data/co2clivar/atlantic/ar07w/ar07w_18HU20021129

            Updated Files Manifest
            ======================
            ==================== =====
            file                 stamp
            ==================== =====
            18HU20021129_trk.jpg
            18HU20021129_trk.gif
            ==================== =====

2014-06-18  Kappa, Jerry  CrsRpt     Website Update    PDF version online
            I've placed a new PDF version of the cruise report: 18HU20021129do.pdf
            into the directory:
            http://cchdo.ucsd.edu/data/co2clivar/atlantic/ar07w/ar07w_18HU20021129/
            It includes all the reports provided by the cruise PIs, summary pages 
            and CCHDO data processing notes, as well as a linked Table of Contents 
            and links to figures, tables and appendices.

• File Merge cchdo_admin
  cr2002075.pdf (download) #bb5a2 
  Date: 2014-06-23 
  Current Status: merged 
  Notes
  CrsRpt

• CTD files online in Exchange and netCDF Carolina Berys 
  Date: 2014-08-19 
  Data Type: CTD 
  Action: Website Update 
  Note: 
  ========================================
  AR07W 2002 18HU20021129 processing - CTD
  ========================================
  
  2014-08-19
  
  C Berys
  
  .. contents:: :depth: 2
  
  Submission
  ==========
  
  ==================== ============= ========== ========= ===
  filename             submitted by  date       data type id 
  ==================== ============= ========== ========= ===
  18HU20021129_CTD.zip Jackson, Jeff 2011-11-16 CTD       745
  ==================== ============= ========== ========= ===
  
  Parameters
  ----------

  18HU20021129_CTD.zip
  ~~~~~~~~~~~~~~~~~~~~
  - CTDPRS
  - CTDSAL
  - CTDOXY
  - CTDTMP
  
  .. [1] parameter has quality flag column
  .. [2] parameter only has fill values/no reported measured data
  .. [3] not in WOCE bottle file
  .. [4] merged
  
  Process
  =======
  
  Changes
  -------
  
  18HU20021129_CTD.zip
  ~~~~~~~~~~~~~~~~~~~~
  - files renamed
  - station 170 CTDOXY_FLAG_I changed from 1 to 4 at 1444, 1463, and 1464 DBAR (per J Swift)
  - station 171 CTDOXY_FLAG_I changed from 1 to 4 at 309, 537, and 637 DBAR (per J Swift)
  
  Conversion
  ----------
  
  ======================= ==================== =======================
  file                    converted from       software               
  ======================= ==================== =======================
  18HU20021129_nc_ctd.zip 18HU20021129_ct1.zip hydro 0.8.2-26-g20de094
  ======================= ==================== =======================
  
  All converted files opened in JOA with no apparent problems.
  
  Directories
  ===========
  :working directory:
    /data/co2clivar/atlantic/ar07w/ar07w_18HU20021129/original/2014.08.19_CTD_CBG
  :cruise directory:
  /data/co2clivar/atlantic/ar07w/ar07w_18HU20021129

  Updated Files Manifest
  ======================
  ======================= ==================
  file                    stamp             
  ======================= ==================
  18HU20021129_nc_ctd.zip 20021203DFOBIOEJHH
  18HU20021129_ct1.zip    20021203DFOBIOEJHH
  ======================= ==================
  
• File Merge cchdo_admin
  18HU20021129_CTD.zip (download) #33b52 
  Date: 2014-08-19 
  Current Status: merged 
  Notes
  CTD

