Meteorological Conditions During Snowfall at Terra Nova Bay (Antarctica)
277
The resulting situation is similar to that presented in Fig. 5a.
- From 00:00 on 17 Jan to 06:00 on 17 Jan;
- From 12:00 on 17 Jan to 12:00 on 18 Jan;
- From 18:00 on 18 Jan to 21:00 on 18 Jan;
- From 03:00 on 19 Jan to 15:00 on 19 Jan;
- At
18:00 on 20 Jan.
6 Cases of Blowing or Drifting Snow
It is important to separate the amount of snowfall and the flux rate of blowing
snow. To date there are no data of annual précipitation at considered stations,
because it is difficult to measure only the amount of snowfall under conditions of
strong wind. Besides, also the changes of the snow surface level measured by the
snow stakes method do not represent the précipitation, and even a visual observation of précipitation is often impossible in heavy drifting snow.
/11VS 7350 (SOFIA) - NANSEN ICE SHEET
Period: 1987-1994
(available data= 93.6 %J
V<1 (kts)
lsVs6
jA 6 17 2840
calms= 1.5 %
38.9 %
33.7 %
U.3 % ____ 8%_____ ___ 6 7 %
Fig. 6. Wind rose of Station 7350