2004 NPEO Aircraft CTD Survey
 


The NPEO 2004 hydrographic survey consisted of 13 stations, repeating the 2002 section toward Alaska from the Pole and two key stations on the transect to Alert, plus stations of opportunity at the Borneo logistics camp/runway and at the Mooring Camp. Three casts were made at Borneo, which served as dress rehearsals for the Twin Otter stations, including Niskin Bottles to sample water for chemistry. The two casts made at the Mooring Camp were made with a lightweight winch without sample bottles.

Cast 4 was a troubleshooting station taken at Borneo with a different instrument and is not included in this collection.

Click on the dark red position marker to display 2004 temperature and salinity profiles at that position. The green markers indicate positions of helicopter CTD stations taken by the associated project Freshwater Switchyard of the Arctic Ocean in May 2004.

 

Vertical color
contour sections
of Salinity and
Temperature
along the orange-
colored line
segments
between CTD
stations are
available.

  

2004 CTD
 Station/Location
CTD Position
Cast Date & Time
Mooring Camp 1 89° 27.83' N _ 61 59.91' E
4/23/2004 _ 2011 UTC
Mooring Camp 2 89° 25.30' N _ 57 41.00' E
4/25/2004 _ 0952 UTC
Borneo 1 89° 18.39' N _ 126 07.04' E
4/26/2004 _ 1231 UTC
Borneo 3 89° 18.84' N _ 125 37.58' E
4/26/2004 _ 1407 UTC
Borneo 4 89° 18.98' N _ 125 26.27' E
4/26/2004 _ 1539 UTC
85N-170W 85° 00.72' N _ 166 36.86' W
4/27/2004 _ 0422 UTC
86N-170W 86° 08.72' N _ 171 17.43' W
4/27/2004 _ 0832 UTC
87N-180 87° 16.28' N _ 178 53.06' W
4/27/2004 _ 1158 UTC
89N-90W 89° 04.11' N _ 87 19.05' W
4/28/2004 _ 0559 UTC
90N North Pole 89° 57.70' N _ 110 33.15' E
4/28/2004 _ 0913 UTC
8840N-180 88° 41.33' N _ 179 45.65' W
4/28/2004 _ 1233 UTC
88N-180 87° 59.92' N _ 179 50.81' E
4/29/2004 _ 0932 UTC
87N-90W 86° 59.68' N _ 90 29.65' W
4/29/2004 _ 1331 UTC

The Historical Trend in North Pole Hydrography shows the changes in salinity and temperature profiles at the North Pole since 1950 and through the 1990s.

Data from the NPEO aerial hydrographic and chemistry surveys are permanently archived at the Arctic System Science (ARCSS) Data Coordination Center. Currently available are CTD Profiles and Seawater Chemistry.  These data plus certain preliminary data sets may be obtained via FTP at this website.