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Energy Exchange in early Spring over
Sea Ice in the Pacific Sector of the Southern
Adrian Hauser* , Gerd Wendler, Ute
Adolphs, Martin O. Jeffries
Geophysical Institute, University of
Alaska, Fairbanks, Alaska
Abstract. In September/October 1994, during a cruise
to Antarctica, we carried out measurements of the
radiation balance and turbulent fluxes aboard the R.V.
Nathaniel B. Palmer. Hourly and daily flux values were
calculated. The net radiation and the eddy fluxes showed
the expected diurnal variations. On average, the ocean
warmed the atmosphere 30.7 Wm-2, a reasonable value for
spring. This flux, which was obtained as the remainder of
the heat budget equation, showed larger values at night
than during daytime. The surface albedo was also
investigated. The area-averaged albedo increased from
0.08 for open water to 0.59 for 10/10 ice concentration.
There was a large amount of scatter for the albedo when
the ship was within the ice pack; low albedo values were
associated with young non-snow covered ice and ice with
wet snow cover.
Date Last Modified: 4/30/00