We present a systematic comparison of different analyses of
satellite-retrieved extinction profile based on the
satellite - measurements with those derived from ground based Lidar. Also compared is the Lidar-derived aerosol optical depth
(AOD) with passive sensor derived from the Moderate Resolution Imaging Spectroradiometer (MODIS). The
Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite data are used as these comparisons and
that is a bit complex because spatial and temporal coincident data for clear sky conditions are needed for its comparisons
to other Lidar data. Although limitation of the number of coincident dataset and expected errors are unknown, the
satellite based aerosol extinction coefficients agree to those measured by ground-based Lidar within 0.02km-1. The two
different satellite-derived AODs differ by 30% in comparison to the average of the coincident.
Observations of tropospheric aerosols (mineral dust, air-pollution aerosols, etc.) and clouds are being conducted using a
network of two-wavelength (1064nm, 532nm) polarization (532nm) lidars in the East Asian region. Currently, the lidars
are operated continuously at 23 locations in Japan, Korea, China, Mongolia and Thailand. A real-time data processing
system was developed for the network, and the data products such as the attenuated backscatter coefficients and the
estimated extinction coefficients for non-spherical and spherical aerosols are generated automatically for online network
stations. The data are used in the real-time monitoring of Asian dust as well as in the studies of regional air pollution and
In general Asian dust storms occurring during the spring season in the northeast Asia play an important role in radiative forcing and regional climate change. In order to investigate the characteristic of optical properties of Asian dust particles atmospheric aerosol vertical profile was measured with a multi-wavelength LIDAR system developed by ADEMRC, K-JIST and a collocated micro-pulse LIDAR (MPL) during the ACE-Asia intensive observation period, 11 March ~ 4 May 2001 at the Gosan super site (33°17'N, 126°10'E) in Jeju Island, Korea. Air mass backward trajectory analysis shows that air masses came from either the northwestern Chinese desert regions or northeastern Chinese sandy areas. It has been shown that combining the LIDAR data and back trajectory analysis can assess the transport characteristics of atmospheric aerosol during the Asian dust events. The LIDAR-derived aerosol optical depth values were compared with those measured by a collocated AERONET sun photometer. Relationship between the LIDAR data and chemical data of atmospheric particulate matters observed at the surface has been analyzed.