Doppler Lidar Observations over a High Altitude Mountainous Site Manora Peak in the Central Himalayan Region

Phanikumar, D. V.; Shukla, K.K.; Naja, Manish; Singh, Narendra; Sahai, Shivraj; Sagar, Ram; Satheesh, S. K.; Moorthy, K. Krishna; Kotamarthi, V. R.; Newsom, Rob

doi:10.18520/cs/v111/i1/101-108

Cited by 1 publication

(1 citation statement)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to understand the role of aerosols in Himalayan climate change, a range-resolved aerosol and cloud characterization study is necessary. In addition to the several surface air quality and aerosol studies [1,[99][100][101], investigations based on the remote sensing measurement of aerosol and cloud layer optical properties were also performed over the central and western Himalayan region in India [83,84,95,[102][103][104][105][106][107][108][109]. On the other hand, despite several studies on surface air quality and aerosols over the eastern Himalayas [110][111][112][113][114][115][116][117], it has remained unexplored and virgin in terms of vertical profiling using ground-based LIDAR observations.…”

Section: Introductionmentioning

confidence: 99%

Profiling of Aerosols and Clouds over High Altitude Urban Atmosphere in Eastern Himalaya: A Ground-Based Observation Using Raman LIDAR

et al. 2023

View full text Add to dashboard Cite

Profiles of aerosols and cloud layers have been investigated over a high-altitude urban atmosphere in the eastern Himalayas in India, for the first time, using a Raman LIDAR. The study was conducted post-monsoon season over Darjeeling (latitude 27°01′ N longitude 88°36′ E, 2200 masl), a tourist destination in north-eastern India. In addition to the aerosols and cloud characterization and atmospheric boundary layer detection, the profile of the water vapor mixing ratio has also been analyzed. Effects of atmospheric dynamics have been studied using the vertical profiles of the normalized standard deviation of RCS along with the water vapor mixing ratio. The aerosol optical characteristics below and above the Atmospheric Boundary Layer (ABL) region were studied separately, along with the interrelation of their optical and microphysical properties with synoptic meteorological parameters. The backscatter coefficient and the extinction coefficient were found in the range from 7.15×10−10 m−1 sr−1 to 3.01×10−5 m−1 sr−1 and from 1.02×10−5 m−1 to 2.28×10−3 m−1, respectively. The LIDAR ratio varies between 3.9 to 78.39 sr over all altitudes. The variation of the linear depolarization ratio from 0.19 to 0.32 indicates the dominance, of non-spherical particles. The periodicity observed in different parameters may be indicative of atmospheric wave phenomena. Cloud parameters, such as scattering coefficients, top and bottom height, and optical depth for different cloud phases, have been evaluated. A co-located Micro Rain Radar has been used with LIDAR for cloud life cycle study.

show abstract