Energy Transfer Through Antarctic Sea Ice (S263)
The following people presented S263 during the last
- PI: Dr. Gerd Wendler
- Staff: Blake Moore
The goal of the study is to obtain a better
understanding of the energy fluxes from the ocean to the
atmosphere or vice versa. Sea ice, especilly when snow
covered, acts as an insulation layer, the efficiency of
which depends on its type and thickness. We are
especially interested in the coastal areas of Adelie Land
where the strong katabatic wind can drive the ice away
from the shore, and frequently thin sea ice is
Onboard Polar Sea.
The team boarded the POLAR STAR on 14 December 2000 in
Hobart, Tasmania (Australia) and arrived in late December
in McMurdo, Antarctica. We instrumented the ship before
departure. New for this season was a digital camera,
which took continuously imagery of the sea ice conditions
and an improved IR telethermometer, which measured the
sea surface temperature.
The following instrumentation was installed on the
port side of the flying bridge or wings of the Polar Sea,
with the exception of the sea ice camera, which was
installed on the aloft con looking forward. One set of
long and short wave instruments were placed on a 25 foot
boom that extended 15 feet out from the ships side, on
the wing, looking down at the surface.The other set, and
UVA and UVB instruments were mounted upward looking from
front of flying bridge. The IR camera was mounted on the
port wing looking down at the surface. The wind speed
instrument was mounted up on a 4-foot vertical pole at
the front, port corner of the flying bridge, with the
temperature and humidity probe similarly mounted close
by. The wind direction was mounted on a poll,
horizontally out over the ships side from the same
location. The other instruments and datalogger were
placed in convenient and accessible and applicable
locations on the flying bridge. The two laptop computers
were secured in the Meteorology Lab. Data was collected
for 5 minutes and averaged. Data from the Polar Sea Staff
(MST weather reports, Quartermaster reports and sea
temperature) were acquired for further analysis.
Special Equipment Used:
Short wave (2), long wave (2), UVA and UBA radiation
Pitch and roll, temperature, humidity, pressure, wind
speed and direction instruments.
Visual sea ice and cloud cover camera.
Data Logger and computers to gather and store data.
Any Logistic Difficulties:
None. Some of the hardware to mount the instruments
had been made in past years, and transferred to the Polar
Sea from the Polar Star.
Findings of Interest:
The data have yet to be analyzed.