NPEO 2006 Aircraft CTD-Chemistry Survey

 

The NPEO 2006 hydrographic survey consisted of seven stations, measuring a CTD transect across the Pole and toward Alaska along 180° Longitude as far as logistically feasible. Three Twin Otter stations recorded by the associated project Freshwater Switchyard of the Arctic Ocean in May 2006 attempted to extend the line nearly to Alert. This repeats similar sections recorded during NPEO 2001 and 2004. Additionally, for the fourth year Switchyard conducted a series of CTD stations across the shelf break near Alert.

The first cast at the Borneo logistics camp/runway serves as a station close to 89°N and 180°E.

2006 CTD
Station/Location
Position
Cast Date and Time
89N_168E 88° 51.3' N _ 168° 40.0' E
4/24/2006 _ 0700 UTC
88N_180 87° 59.4' N _ 179° 52.9' W
4/24/2006 _ 1300 UTC
87N_180 86° 55.8' N _ 179° 44.2' W
4/24/2006 _ 1650 UTC
86N_170W 85° 57.9' N _ 169° 56.6' W
4/25/2006 _ 1250 UTC
85N_170W 84° 58.8' N _ 169° 45.5' W
4/25/2006 _ 1620 UTC
90N 89° 58.6' N _ 170° 09.4' W
4/26/2006 _ 1020 UTC
89N_90W 89° 00.5' N _ 088° 24.3' W
4/26/2006 _ 1420 UTC
Switchyard 2006
Twin Otter Station
Position
Cast Date and Time
Station 1
Lamont 1 84° 45.0' N _ 064° 24.0' W
5/13/2006 _ 1424 UTC
Station 2
Lamont 2 84° 06.4' N _ 064° 42.0' W
5/14/2006 _ 1410 UTC
Station 3
Lamont 3 85° 56.0' N _ 068° 42.2' W
5/15/2006 _ 1640 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 NPEO surveys.

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.