Lower atmospheric wind observation by L-band Doppler radar in Thailand

Nipha Leelaruji; Chaiwat Somboonlarp; Parichart Sangonchart; Narong Hemmakorn; Apinan Manyanon; Yuichi Ohno

doi:10.1117/12.410585

21 December 2000 Lower atmospheric wind observation by L-band Doppler radar in Thailand

Nipha Leelaruji, Chaiwat Somboonlarp, Parichart Sangonchart, Narong Hemmakorn, Apinan Manyanon, Yuichi Ohno

Proceedings Volume 4152, Microwave Remote Sensing of the Atmosphere and Environment II; (2000) https://doi.org/10.1117/12.410585
Event: Second International Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space, 2000, Sendai, Japan

Abstract

The study of low atmospheric boundary layer wind by wind profiler radar is the aim of this present. The L-band Doppler radar used as the meteorological equipment using operating frequency 1357.5 MHz. The transmitter radiates the pulse signal of peak power 1 kW through the upper air. The single parabolic antenna is steering into three directions, vertical, north and east respectively. This radar received the echo scattered back by the irregularity of atmospheric refractivity along the beam. The Doppler shift frequency deviates by the movement of turbulent are used to calculate the wind velocity and wind direction. The observation height starts from 150 meters to 4 km. The diurnal and seasonal wind had been observed for six years continuously. It shows the variation of wind in each year, which correspond to Asia monsoon, Northeastern monsoon and Southwestern monsoon. While the radio sonde, which operates by radio propagation technique is used for wind measurements too. The comparisons of both systems are present in correlation method.

Citation Download Citation

Nipha Leelaruji, Chaiwat Somboonlarp, Parichart Sangonchart, Narong Hemmakorn, Apinan Manyanon, and Yuichi Ohno "Lower atmospheric wind observation by L-band Doppler radar in Thailand", Proc. SPIE 4152, Microwave Remote Sensing of the Atmosphere and Environment II, (21 December 2000); https://doi.org/10.1117/12.410585

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