3-D coherent Doppler lidar

A 3-D coherent Doppler lidar system, developed by Mitsubishi Electric Co. (Tokyo, Japan), was installed on the rooftop of A-building of Fukuoka University (33.55 °N, 130.37 °E, 55 m above sea level) in Fukuoka city, and continuous 3-D wind and aerosol (SNR) measurements over the Fukuoka urban area (over the Fukuoka plain) have been conducted there since Nov 2016.

Technical specifications of 3-D Doppler lidar system
Laser	DFB-Er doped fiber laser (Yb; YAG)
Wavelength	1.54 µm
Pulse energy	1.0 mJ/pulse
Pulse repetition rate	4000 Hz (average power: 4W)
Pulse width	200 ns
Telescope diameter (effective)	120 mm
Range resolution	30 m/ 60 m
Measurable distance	up to 6 km/ 12 km (200 range bins)

• Data archive (after Nov 2018): http://www.se.fukuoka-u.ac.jp/takashima/dlidar_test/

• Data archive (until Aug 2018): http://www.se.fukuoka-u.ac.jp/takashima/dlidar/

  *If you would like to use any images on this web page, please contact us at the following e-mail address: hisahiro (at) fukuoka-u.ac.jp

• Water level of chiller/room temp & RH: http://www.se.fukuoka-u.ac.jp/takashima/dlidar/cam/

• Live cam & timelapse video (archive) : http://www.se.fukuoka-u.ac.jp/takashima/dlidar_test/cam_1/

Research activities

 

Publications (refereed)

• Takashima H., K. Hara, C. Nishita-Hara, Y. Fujiyoshi et al., Short-term variation in atmospheric constituents associated with local front passage observed by a 3-D coherent Doppler lidar and in-situ aerosol/gas measurements, Atmos. Environ.:X, 3, 2019

• Ueki H., H. Takashima, M. M. Friedrich, Spatiotemporal Variations of NO2 over Fukuoka Japan, Observed by Multiple MAX-DOAS and 3-D Coherent Doppler Lidar, SOLA, 17, 69-73, 2021

• Hara K., H. Takashima et al., Seasonal variations of diurnal cycles of aerosols and gases in the Fukuoka Plain, Japan: Effects of local meteorology and atmospheric chemistry, Atmos. Environ., 289, 119318-119318, 2022