Simultaneous observations of boundary-layer aerosol layers with CL31 ceilometer and 1064/532 nm lidar |
| |
| Authors: | IG McKendry D van der Kamp KB Strawbridge A Christen B Crawford |
| |
| Institution: | 1. State Key Laboratory of Earth Surface Processes and Resource Ecology, and College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China;2. Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA;3. Meteorological Institute of Shaanxi Province, Xi''an 710014, China;4. Meteorological Observation Center, Chinese Meteorological Administration, Beijing 100081, China;5. Laser Engineer Technology Laboratory, Beijing Institute of Space Mechanics and Electricity, Beijing 100094, China;1. Meteorological Observation Laboratory, Weather Information Service Engine, Hankuk University of Foreign Studies, Yongin-si, Gyeonggi-do 17035, Republic of Korea;2. Department of Atmospheric Science, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, Republic of Korea;3. Department of Atmospheric Science and Engineering, Ewha Womans University, Ewha-Yeodae-Gil 52, Seodaemun-gu, Seoul, Republic of Korea |
| |
| Abstract: | Aerosol backscatter measurements from a Vaisala CL31 ceilometer are compared directly with a co-located 532/1064 nm lidar in order to validate the CL31 for remote sensing of vertical aerosol structure. The cases examined include a significant aerosol event (biomass burning), which by virtue of its vertical extent, provides a robust measure of the vertical range of the ceilometer for aerosol applications. A second case is presented when the instruments were separated in order to illustrate the utility of a network of such instruments for elucidating spatial patterns in aerosol distribution and the advection of elevated pollutant layers. When co-located, the instruments show remarkable agreement and indicate that the CL31 can detect aerosol layers up to 3000 m AGL in ideal conditions (at night and with high aerosol concentrations as found in biomass burning or dust plumes). When separated, multiple instruments provide an opportunity to examine advection of pollutant layers as well as their evolution. This suggests that installation of a ceilometer network would provide a cost-effective means of examining three-dimensional aspects of regional air quality as well as distinguishing between regional and local sources of pollution |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
