[OPTICAL REVIEW Vol. 5, No. 4 (1998) 252-256]

Lidar Network System for Monitoring the Atmospheric Environment in Jakarta City

Mego PINANDITO,1 Imam ROSANANTO,1 Ii HIDAYAT,1 Muharyan SYAMSUDIN,1 Nobuo SUGIMOTO,2,* Ichiro MATSUI,2 Shigeru MURATA,3 Takakazu ISHII,3 Noboru YASUDA3 and Takao KOBAYASHI4

1Research & Development Center for Calibration, Instrumentation & Metrology Indonesian Institute of Science (KIM-LIPI), Kompleks Puspiptek Serpong Tangerang, Indonesia, 2National Institute for Environmental Studies, 16-2, Onogawa, Tsukuba, 305-0053 Japan, 3Radio Operation Unit, NEC Corporation, 1-10, Nisshincho, Fuchu, Tokyo, 189-0036 Japan, 4Faculty of Engineering, Fukui University, 3-9-1, Bunkyo, Fukui, 910-0017 Japan

(Received May 8, 1998; Accepted June 16, 1998)

A lidar network system consisting of two Mie scattering lidars and one differential absorption lidar was developed to measure the atmospheric environment in Jakarta. The three lidars were installed at three locations in Jakarta to study atmospheric boundary layer structure and transportation of atmospheric pollutants. The Mie scattering lidars employ compact flashlamp pumped Nd:YAG lasers operated at 1064 nm fundamental. They are installed in shelters and directed vertically. One of the Mie lidar has a rotating wedged window for scanning conically to measure wind velocity using a correlation method. The DIAL system employs two Nd:YAG laser-pumped optical parametric oscillators. The DIAL is designed to measure distribution of ozone and SO2 in the near UV region, and NO2 in the 450-nm region. The system is installed in a shelter and has a full scanning capability.

Key words : lidar, Mie scattering lidar, differential absorption lidar (DIAL), air pollution monitoring, atmospheric boundary layer, aerosol, NO2, SO2, O3.