TY  - Data
T1  - The 25th Chinese Antarctic Expedition Soundradar Observation Data (2008-2009)
A1  - Hu hongqiao
DO  - 10.12072/ncdc.azs.db3033.2023
PY  - 2020
DA  - 2020-12-24
PB  - National Cryosphere Desert Data Center
AB  - The Doppler Wind Radar 4 (DDAR4) was placed at the southwest corner of the food warehouse at Zhongshan Station and worked continuously for nearly 40 days. It measured and recorded the changes in wind speed and direction with height in the atmospheric boundary layer, with a sampling interval of 10 minutes. This dataset contains the acoustic radar observation data from the 25th Chinese Antarctic Expedition in 2008-2009. Doppler wind 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 study of mesoscale meteorology, air pollution and diffusion, and low-level wind shear in the boundary layer atmosphere. The basic principle of wind measurement by acoustic radar is to emit a fixed frequency sound pulse into the atmosphere. Due to the movement of scatterers with wind speed, Doppler frequency deviation is generated, and the magnitude of the frequency deviation is proportional to the wind speed. Accurately measuring the Doppler frequency offset can determine wind speed and direction.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/056e8de0-0de2-11e6-a761-5cc5d45ad3ae
ER  -