%0 Dataset
%T Acoustic radar data of the 25th Antarctic expedition of China, 2008-2009
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/056e8de0-0de2-11e6-a761-5cc5d45ad3ae
%W NCDC
%R 10.12072/ncdc.azs.db3033.2023
%A Hu hongqiao
%K Sodar Observation;Polar;China Antarctic Zhongshan Station
%X The Doppler wind acoustic radar (DDAR4) was placed in the South West Point of the food warehouse of Zhongshan Station and has been working continuously for nearly 40 days. It has measured and recorded the changes of wind speed and direction with height in the Planetary boundary layer. The sampling interval is 10 minutes. This dataset is the acoustic radar observation data from the 25th Antarctic Expedition in China from 2008 to 2009. Doppler wind acoustic radar is an effective tool for detecting three-dimensional wind speed and direction in the Boundary layer atmosphere using acoustic remote sensing. It plays an important role in the research of Boundary layer mesoscale meteorology, air pollution and diffusion, and low-level Wind shear. The basic principle of acoustic radar wind measurement is to emit a fixed frequency acoustic pulse into the atmosphere. Due to the movement of the scatterer with wind speed, Doppler frequency offset is generated, and the magnitude of the frequency offset is proportional to the size of wind speed. Accurately measuring Doppler frequency offset can measure wind speed and direction