气候变化领域集成服务门户(CCPortal): Assessment of the vertical distribution of speciated aerosol absorption over South Asia using spaceborne LIDAR and ground-based observations

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DOI	10.1016/j.rse.2020.112164
	Assessment of the vertical distribution of speciated aerosol absorption over South Asia using spaceborne LIDAR and ground-based observations
	Lakshmi N.B.; Nair V.S.; Babu S.S.
发表日期	2021
ISSN	00344257
卷号	253
英文摘要	Present study estimates the shortwave radiative effects of absorbing aerosols (dust and carbonaceous aerosols) over the Indian landmass using a synergy of spaceborne and ground-based observations. Vertical profiles of dust and total aerosols are estimated using the multi-year (2006–2017) observations from CALIOP (Cloud Aerosol Lidar with Orthogonal Polarization) over the Indian region. Pre-monsoon enhancement (March ‐ –May) in aerosol loading over the Indian region is significantly contributed (~56%) by the transported mineral dust at free tropospheric altitudes. Though, shortwave radiative effect due to dust in the atmosphere increases about three times from winter to pre-monsoon, at the top of the atmosphere (TOA) it causes cooling. Dust induced cooling reverses the positive radiative effect induced by non-dust aerosols at TOA over Indo-Gangetic Plains. Though the natural dust dominates the aerosol loading during pre-monsoon, anthropogenic dust contributes significantly (~65%) to the total dust loading during winter. Over Indo-Gangetic Plains, high aerosol warming (up to ~2 Kday−1) observed within the planetary boundary layer (PBL) is mainly caused by carbonaceous aerosols (85%). The observed heating rates over the Indian region can have significant implications over regional climate, air quality, and changing precipitation patterns. © 2020 Elsevier Inc.
英文关键词	Aerosol; CALIPSO; Carbonaceous aerosols; Heating rate; Mineral dust; Radiative effect
语种	英语
scopus关键词	Aerosols; Air quality; Atmospheric thermodynamics; Boundary layer flow; Boundary layers; Dust; Optical radar; Temperature measurement; Carbonaceous aerosol; Cloud-aerosol lidar with orthogonal polarizations; Ground-based observations; Indo-Gangetic Plains; Planetary boundary layers; Precipitation patterns; Top of the atmospheres; Vertical distributions; Loading; absorption; aerosol; anthropogenic source; assessment method; boundary layer; CALIOP; concentration (composition); cooling; ground-based measurement; heating; lidar; mineral dust; observational method; spatiotemporal analysis; troposphere; vertical distribution; Gangetic Plain; Howard County [Indiana]; India; Indiana; South Asia; United States
来源期刊	Remote Sensing of Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/179043
作者单位	Space Physics Laboratory, Vikram Sarabhai Space Centre, Thiruvananthapuram, India
推荐引用方式 GB/T 7714	Lakshmi N.B.,Nair V.S.,Babu S.S.. Assessment of the vertical distribution of speciated aerosol absorption over South Asia using spaceborne LIDAR and ground-based observations[J],2021,253.
APA	Lakshmi N.B.,Nair V.S.,&Babu S.S..(2021).Assessment of the vertical distribution of speciated aerosol absorption over South Asia using spaceborne LIDAR and ground-based observations.Remote Sensing of Environment,253.
MLA	Lakshmi N.B.,et al."Assessment of the vertical distribution of speciated aerosol absorption over South Asia using spaceborne LIDAR and ground-based observations".Remote Sensing of Environment 253(2021).