DOI: 10.1016/j.atmosenv.2014.09.083
Scopus记录号: 2-s2.0-84908092614
论文题名: LiDAR observations of the vertical distribution of aerosols in free troposphere: Comparison with CALIPSO level-2 data over the central Himalayas
作者: Solanki R ; , Singh N
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 99 起始页码: 227
结束页码: 238
语种: 英语
英文关键词: Aerosol backscatter
; Bias
; CALIPSO
; LiDAR
; LiDAR ratio
; Long range transport
Scopus关键词: Bias
; CALIPSO
; Free troposphere
; Himalayas
; Lidar observation
; Lidar ratio
; Long range transport
; Vertical distributions
; Optical radar
; CALIPSO
; data set
; lidar
; seasonality
; troposphere
; vertical distribution
; vertical profile
; aerosol
; altitude
; Article
; comparative study
; controlled study
; imaging and display
; light detection and ranging
; mass extinction
; observational method
; remote sensing
; satellite imagery
; seasonal variation
; spring
; summer
; surface property
; troposphere
; winter
; Himalayas
; India
; Manora Peak
; Nainital
; Siwalik Hills
; Uttarakhand
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: This study elucidates the seasonality in aerosol vertical profiles acquired using LiDAR measurements and compares it with the CALIPSO level-2 data products over central Himalayas. A detailed analysis on the vertical distribution of aerosols over the central Himalayan region is carried out during different seasons. We present intermittent observations that were made over Manora Peak (29.36° N, 79.45° E, 1951 m, AMSL) Nainital, during March 2012 to May 2013 amounting to a total of 360 h of LiDAR operation, out of which 57 suitable cases were subjected to further analysis. Aerosol loading in the vertical column was found to be highest with 3.40 (Mm sr)-1 at 3.3 km during the spring and summer seasons (MAMJ-2012), and the lowest with 0.48 (Mm sr)-1 at 2.5 km, during winter season (DJF 2012-13). The aerosol layer reaches to the maximum altitude of 5.6 km in the period of MAMJ-2012 and a minimum at 2.8 km in the winter (DJF). The highest value (124 Mm-1) of extinction coefficient is found at 3.3 km, during MAMJ-2012 and minimum (7 Mm-1) at 2.5 km during the winter season. A comparison of ground based LiDAR observations with the CALIPSO satellite derived aerosol backscatter profiles has been carried out for 37 suitable cases. To determine the LiDAR ratio, AOD measurements from MODIS were used as constrain. The mean percent bias for different seasons is found to be +18 ± 42%, +22 ± 28%, +32 ± 36% and +18 ± 51% for MAMJ-2012, SON-2012, DJF-2012-13 and MAM-2013 respectively. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80538
Appears in Collections: 气候变化事实与影响
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作者单位: Aryabhatta Research Institute of Observational Sciences, Nainital, Uttarakhand, India; University of Delhi, Delhi, India
Recommended Citation:
Solanki R,, Singh N. LiDAR observations of the vertical distribution of aerosols in free troposphere: Comparison with CALIPSO level-2 data over the central Himalayas[J]. Atmospheric Environment,2014-01-01,99