Weather profile mast observations on an ice floe on the Weddell Sea, 11/2004-01/2005

As a part of the international expedition Ice Station Polarstern (ISPOL, ispol.de/), a weather mast was set up on an ice floe on the Weddell Sea (68 degrees S, 55 degrees W) in 29.11.2004 - 1.1.2005. Up to 25.12.2004, a 10-m high mast was used. The mast was equipped with the following sensors, manufactured by Aanderaa Instruments: Sensor type Amount Heights (m) cup anemometer 5 10.2, 4.9, 2.3, 1.2, 0.6 wind vane 1 10.2 air temperature sensor 3 10.2, 2.3, 0.5 relative humidity sensor 1 4.8 From 28.11.2004 to 1.1.2005, a 6.5-m high mast was used, with the sensors as: Sensor type Amount Heights (m) cup anemometer 3 6.4, 1.8, 0.6 wind vane 1 6.4 air temperature sensor 3 6.4, 1.7, 0.5 relative humidity sensor 1 1.7 The data have been processed at the Finnish Institute of Marine Research (FIMR).

The processed data set includes wind and gust speed (m/s), relative wind direction (deg), air temperatures (degrees C) and relative humidity (%) at a temporal resolution of 10 minutes. The wind direction was measured relative to mast setup, and has not been corrected for the changing ice floe heading.