RESEARCH ASSOCIATES:

MAILING ADDRESS:
Department of Physics
University of Mercantile Marine
2-1-6 Etchujima, Koto-ku, Tokyo 135-8533
JAPAN

TELEPHONE NUMBER:
+81-3-5245-7464

FAX NUMBER:
+81-3-5245-7339

E-MAIL ADDRESS:
murayama@ipc.tosho-u.ac.jp

WEB SITE: http://compulab.phys.tosho-u.ac.jp (only in Japanese)
Related sites: http://info.nies.go.jp:8094/kosapub/, http://info.nies.go.jp:8094/AsiaNet/

DATE:
August 29, 2001

LIDAR LOCATION (CITY, COUNTRY, LAT., LONG.):
Tokyo, JAPAN, 35.664N, 139.796E

SITE ELEVATION:
35m MSL

PARAMETER(S) OR CONSTITUENT(S) MEASURED:
Extinction (Backscatter) and depolarization of aerosols and clouds, Water vapor

RESEARCH OBJECTIVES AND SPONSOR:
Optical properties and transport dynamics of local and regional aerosols and those effects on radiation balance, Urban haze at coastal area, Asian dust network (AD-Net)

MEASUREMENT TECHNIQUE:
Mie lidar including depolarization measurement and Raman lidar (N2 and H2O)

MEASUREMENT RANGE:
0-30km

VERTICAL RESOLUTION:
7.5m (typical)

FREQ. OF MEASUREMENT (TYPICALLY):
Weekly, more frequently in the spring time

MEASUREMENT TIMES (TYPICALLY):
Various

LASER TYPE AND WAVELENGTH (s):
Nd:YAG Laser, 532nm and 1064nm simultaneous

LASER ENERGY/PULSE:
532nm - 20mJ typ. max 200mJ
1064nm - 80mJ typ. max 150mJ

PULSE REPETITION RATE:
10Hz

RECEIVER SIZE AND CONFIGURATION:
20cm, 25cm, 30cm dia. each, Schmidt-Cassegrain

DETECTORS USED:
PMT: Hamamatsu R-1463-01 x2, R5600P x2, R5600P-01 x3, R3236 x1

SIGNAL PROCESSING:
Analog & Photon counting

ANALOG-T0-DIGITAL CONVERTER:
Licel TR40-160 x2
LeCroy LT364, 9304A
SR430 (multi-channel scalar) x2

COMPUTER:
Pentium 133MHz, Data acquisition on MS-DOS with NI-GPIB and NI-DIO cards

PLATFORM (if applicable):
Not-movable

PUBLICATIONS (5 recent and/or significant):
Murayama, T., Sugimoto, N., Uno, I., Kinoshita, K., Aoki, K., Hagiwara, N., Liu, Z, Matsui, I., Sakai, T., Shibata, T., Arao, K., Sohn, B.-J., Won, J.-G., Yoon, S.-C., Li, T., Zhou, J., Hu, H., Abo, M., Iokibe, K., Koga, R., Iwasaka, Y., Ground-based network observation of Asian dust events of April 1998 in east Asia, J. Geophys. Res. Vol. 106 , No. D16 , 18,345-18,360 2001.

Murayama, T., Sugimoto, N., Matsui, I., Liu, Z., Sakai, T., Shibata, T., Iwasaka, Y., Won, J.-G., Yoon, S.-C., Li, T., Zhou, J., and Hu, H., Lidar Network Observation of Asian Dust, in Advances in Laser Remote Sensing (Edition de l'Ecole polytechnique, 2001) 169-172.

Murayama, T., Formation of ice cloud from Asian-dust particles in the upper troposphere, Proc. SPIE, Vol. 4153, 218-225, 2001.

Murayama, T., Okamoto, H., Kaneyasu, N., Kamataki, H., and Miura, K., Application of lidar depolarization measurement in the atmospheric boundary layer: Effects of dust and sea-salt particles, J. Geophys. Res. Vol. 104 , No. D24 , 31,781-31,792 1999.

Murayama, T., Furushima, M., Oda, A., and Iwasaka, N., Depolarization ratio measurements in the atmospheric boundary layer by lidar in Tokyo, J. Meteorol. Soc. Jpn, Vol. 74, No.4,571-578, 1996.

COMMENTS:
The boundary layer aerosols and clouds up 7km are continuously monitored by Visala CT-25K with an enhanced-resolution recording option at the same location.