NPEO 2005 Aircraft CTD-Chemistry Survey

 

The NPEO 2005 hydrographic survey consisted of seven stations, attempting to measure a CTD transect across the Pole as far towards Russia along 90°E as logistically feasible. Three Twin Otter stations recorded by the associated project Freshwater Switchyard of the Arctic Ocean in May 2005 extend the line nearly to Alert. Additionally, for the third 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 90°E.

Click on a dark red position marker for NPEO stations or a magenta marker for Switchyard stations to display 2005 temperature and salinity profiles at that position. The green markers indicate positions of helicopter Switchyard CTD stations.

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

2005 CTD
Station/Location
Position
Cast Date and Time
Borneo 89° 21.5' N _ 147° 26.9' E
4/25/2005 _ 1928 UTC
86N_90E 86° 06.9' N _ 090° 03.1' E
4/27/2005 _ 0004 UTC
87N_90E 87° 00.0' N _ 089° 51.8' E
4/27/2005 _ 0307 UTC
88N_90E 88° 04.3' N _ 091° 46.1' E
4/27/2005 _ 1600 UTC
89N_90W 89° 01.9' N _ 088° 33.8' W
4/27/2005 _ 2138 UTC
90N North Pole 89° 47.2' N _ 151° 31.0' E
4/28/2005 _ 0100 UTC
87.5N_90W 87° 27.0' N _ 089° 08.9' W
4/28/2005 _ 1343 UTC
Switchyard 2005
Twin Otter Station
Position
Cast Date and Time
Lamont 2 86° 16.1' N _ 074° 01.8' W
5/2/2005 _ 1140 UTC
Lamont 3 84° 27.3' N _ 065° 14.1' W
5/3/2005 _ 1216 UTC
Lamont 4 85° 05.1' N _ 069° 02.7' W
5/5/2005 _ 1033 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.