Arid
DOI10.1117/12.2324551
Using a CCD camera lidar system for detection of Asian dust
Butt, Jalal1; Oville, Chris1; Sharma, Nimmi C. P.1; Barnes, John E.2,3
通讯作者Butt, Jalal
会议名称Conference on Lidar Remote Sensing for Environmental Monitoring XVI
会议日期SEP 24-25, 2018
会议地点Honolulu, HI
英文摘要

During intense spring and early summer storms, substantial volumes of dust from east Asian desert regions are lofted over the continent and transported by prevailing winds across the Pacific Ocean. The phenomenon has wide reaching effects including long range nutrient and sediment transport as well as radiative forcing. Mauna Loa Observatory (MLO) is an atmospheric baseline station in Hawaii at an altitude of 3397-m.a.s.l.. MLO's CCD Camera Lidar (CLidar) has fine near-ground altitude resolution, which makes it a useful system for Asian dust detection, especially at high altitude sites such as MLO. A 20-Watt, 532-nm Nd:YAG laser was vertically transmitted into the atmosphere above MLO. The side-scatter from atmospheric constituents, such as clouds, aerosols, and air molecules was detected by a wide-angle CCD camera situated 139-m from the laser. The obtained signal was range-normalized using a molecular scattering model and corrected for transmission with a column-averaged aerosol phase function derived from MLO-based AERONET photometer measurements. In several of the resulting aerosol extinction profiles, notable aerosol layers were observed near altitude ranges in which Asian dust is typically transported by prevailing winds. Corresponding relative humidity measurements made by nearby radiosondes were examined to differentiate aerosol scattering from cloud scattering. To further examine layers exhibiting both aerosol extinction peaks and relative humidity levels below that of tenuous ice clouds, back trajectories were conducted using NOAA's Hybrid Single Particle Lagrangian Integrated Trajectory model. Several layers from 2008 and 2009 were traced back to East Asian deserts.


英文关键词Asian dust dust transport Mauna Loa Observatory CCD camera lidar CLidar East Asian deserts Asian dust detection dust detection
来源出版物LIDAR REMOTE SENSING FOR ENVIRONMENTAL MONITORING XVI
ISSN0277-786X
EISSN1996-756X
出版年2018
卷号10779
EISBN978-1-5106-2134-3
出版者SPIE-INT SOC OPTICAL ENGINEERING
类型Proceedings Paper
语种英语
国家USA
收录类别CPCI-S
WOS记录号WOS:000459651300020
WOS关键词RELATIVE-HUMIDITY ; BOUNDARY-LAYER ; TRANSPORT ; CLOUDS ; EVENT
WOS类目Environmental Sciences ; Remote Sensing
WOS研究方向Environmental Sciences & Ecology ; Remote Sensing
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/307873
作者单位1.Cent Connecticut State Univ, Dept Phys & Engn Phys, New Britain, CT 06053 USA;
2.Univ Colorado, CIRES, Boulder, CO 80309 USA;
3.NOAA, Earth Syst Res Lab, GMD, Boulder, CO 80305 USA
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Butt, Jalal,Oville, Chris,Sharma, Nimmi C. P.,et al. Using a CCD camera lidar system for detection of Asian dust[C]:SPIE-INT SOC OPTICAL ENGINEERING,2018.
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