Tethered Ocean Profiler 4 Data

Data from TOP4 deployed in September 2021


Last buoy status on 2022/8/13 10045 UTC : temperature = 6.8125 C, battery = 9.671 V

Plot of TOP Buoy Status

Last position on 2022/8/13 10045 UTC : 78.2139 N, 129.9215 W

Plot of TOP Locations

Last profile (number 5702) on 2022/8/13 35 UTC

Last profile mean motor current = 64.2767 mA, mean battery = 9.6388 V

Plot of TOP Profiler Engineering Data

Last profile depth: minimum = 1.49, maximum = 198.0982 m

Last profile temperature: minimum = -1.4421, maximum = -0.053345 C

Last profile salinity: minimum = 180.6492, maximum = 190.5763

Composite Plot of TOP T & S Profiles

Plot of TOP T & S Contours

The raw GPS buoy location data are available in an ASCII file: top4rawlocs.dat

Depth averaged profiler data files (with interpolated location) are available in two formats:

top4grddata.tar.Z or top4grddata.zip

TOP4 was deployed on an 0.75 m thick ice floe in the Beaufort Sea on September 4, 2021 at 79 17.0 N, 135 31.6 W as part of the Beaufort Gyre Observing System (BGOS) during the JOIS 2021 cruise on the CCGS Louis S. St. Laurent. On the same icefloe, an Ice-Tethered Profiler (ITP122), a US Army Cold Regions Research and Engineering Laboratory (CRREL) Seasonal Ice Mass Balance Buoy 3 ,and a Naval Postgraduate School Arctic Ocean Flux Buoy (AOFB48) were also installed. The TOP is operating on a standard sampling schedule of 6 two-way profiles from the surface to 200 m depth each day.