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  • Công bố khoa học và công nghệ Việt Nam

29.01

Vật lý

Các phép đo toàn cảnh nhiệt độ và mật độ tầng bình lưu tại Hà Nội bằng phương pháp Rayleigh lidar

Measurements of the stratospheric density and temperature profiles in Hanoi by a Rayleigh lidar

Communications in Physics

2014

3

247-256

0868-3166

The molecular density and temperature profiles of the stratosphere in Hanoi are measured by a Rayleigh lidar. The profiles have the spatial resolution of 120 m and the temporal resolution of 1 h. Their bottom height and top height are 20 km and 57 km, respectively. The atmospheric molecule density profile is directly derived from the correction-range lidar signal. The temperature profile is deduced from the molecular density profile based on the assumptions of the hydrostatic equilibrium and the ideal-gas law. Lidar measurements show good agreement with the molecular density and the temperature profiles from the MSISE-90 atmospheric model. Maximu,!, errors of the density and temperature are found to be +/-0.9 percent and +/-3.4 K, respectively. The position and the temperature of the stratopause in Hanoi are determined to be about 49 km and 270 K. Database of lidar in a long time might reveal the characteristic and the structure of the stratosphere in Hanoi, Vietnam.

TTKHCNQG, CLv 2393