NPEO 2007 Aircraft CTD-Chemistry Survey
 

The NPEO 2007 hydrographic survey consisted of ten stations, measuring a CTD transect from the Pole along 135°W and along 90°E Longitudes as far as logistically feasible. Five Twin Otter stations recorded by the associated project Freshwater Switchyard of the Arctic Ocean in May 2007 attempted to add an additional the line nearly to Alert. This repeats similar sections recorded during NPEO 2001 and 2004.

The first cast at the Borneo logistics camp/runway serves as a station close to 89°N and 0°Longitude.

2007CTD_Clickmap
2007 CTD
 Station/Location
Position
Cast Date and Time
89N_0E 89° 10.7' N _ 000° 12.3' W
4/21/2007 _ 1820 UTC
85N_90E 84° 58.7' N _ 090° 20.7' E
4/22/2007 _ 0128 UTC
86N_90E 86° 01.5' N _ 090° 05.9' E
4/23/2007 _ 1638 UTC
88N_90E 88° 03.4' N _ 092° 40.6' E
4/23/2007 _ 2228 UTC
84N_135W 84° 28.7' N _ 134° 42.9' W
4/24/2007 _ 2057 UTC
86N_135W 85° 44.5' N _ 134° 08.8' W
4/25/2007 _ 0123 UTC
90N 89° 57.3' N _ 168° 38.7' E
4/25/2007 _ 2015 UTC
87N_135W 87° 10.3' N _ 136° 09.8' W
4/28/2007 _ 1618 UTC
89N_135W 88° 35.0' N _ 136° 02.4' W
4/28/2007 _ 2015 UTC
89N_90E 89° 03.8' N _ 084° 30.4' E
4/29/2007 _ 0038 UTC
Switchyard 2007
 Twin Otter Station
Position
Cast Date and Time
Station 1
 Lamont 1 88° 08.5' N _ 090° 43.4' W
5/02/2007 _ 1100 UTC
Station 2
 Lamont 2 84° 09.6' N _ 064° 40.1' W
5/03/2007 _ 1802 UTC
Station 3
 Lamont 3 84° 54.1' N _ 068° 27.7' W
5/04/2007 _ 0435 UTC
Station 4
 Lamont 4 84° 09.6' N _ 064° 40.0' W
5/04/2007 _ 0800 UTC
Station 5
 Lamont 5 89° 09.7' N _ 102° 59.2' W
5/07/2007 _ 0003 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.