ICLAS: International Coordination-group on Laser Atmospheric Studies
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LIDAR RESEARCHER: Dr. Andrew Y. S. CHENG

RESEARCH ASSOCIATES:
Dr. Peter Voelger, Dr. Andrew Walton, Dr. Zhu Jianhua
MAILING ADDRESS: Department of Physics and Materials Science, City University of Hong Kong, 83 Tat Chee Ave., Kowloon, Hong Kong, China

TELEPHONE NUMBER: (852) 2788-7810

FAX NUMBER: (852) 2788-7830

E-MAIL ADDRESS: apaysc@cityu.edu.hk

WEB SITE: http://

DATE: 13th August, 2001

LIDAR LOCATION (CITY, COUNTRY, LAT., LONG.): Hong Kong, China
LAT = 22 deg 20 min N, LONG = 114 deg 10 min E

SITE ELEVATION: 67m

PARAMETER(S) OR CONSTITUENT(S) MEASURED: Aerosol extinction vertical profiles

RESEARCH OBJECTIVES AND SPONSOR:
Urban aerosol, pollution transports, internal boundary layer heights
MEASUREMENT TECHNIQUE: Mie Lidar

MEASUREMENT RANGE: 3 to 5 km range

VERTICAL RESOLUTION: 3 to 12 m

FREQ. OF MEASUREMENT (TYPICALLY):
weekly
MEASUREMENT TIMES (TYPICALLY):
afternoon
LASER TYPE AND WAVELENGTH (s):
NdYAG 532nm
LASER ENERGY/PULSE:
75mJ
PULSE REPETITION RATE:
10Hz
RECEIVER SIZE AND CONFIGURATION:
14-inch diameter coaxial design
DETECTORS USED:
PMT
SIGNAL PROCESSING:

ANALOG-T0-DIGITAL CONVERTER:
12bit at 100MHz
COMPUTER:
PC
PLATFORM (if applicable):
Windows 98
PUBLICATIONS (5 recent and/or significant):

1. Andrew Y. S. Cheng, H. Liu, J. C. L. Chan, and F. W. L. Fong, Numerical simulation and lidar measurements of the internal boundary layer evolution over Hong Kong urban area. In Proceedings of 15th International Congress of Biometeorology & International Conference on Urban Climatology, Sydney, Australia, 8-12 November, 1999.
2. Cheng, A. Y. S., H. Liu and J. C. L. Chan, 1999: Lidar Observation of Atmospheric Processes in Hong Kong (invited paper), Proc. Int. Laser Sensing Symposiun-ILSS'99, Fukui, Japan, 6-8 September, p67-70.
3. Andrew Y. S. Cheng, S. W. Tsang and Jianhua Zhu, 2000: Studies of the spatial correlation between urban aerosols and local traffic congestion using a slant angle scanning Mie Lidar system. In the SPIE's 2nd International Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment and Space, October 9-12, 2000, 242-249, Sendai, Japan.
4. Andrew Y. S. Cheng, C. Y. Pau and S. W. Tsang, 2000: Monitoring of Urban Aerosol below the Boundary Layer using a Volume Scanning Mie Lidar. In the 20th International Laser Radar Conference, July 10-14, 2000, Vichy, France.
5. Liu H. P., J. C. L. Chan and A. Y. S. Cheng, 2001: Internal boundary layer structure under sea-breeze conditions in Hong Kong. Atmos. Environ., Vol. 35, 683-692.

 
 

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