DOI: 10.1016/j.atmosenv.2014.10.022
Scopus记录号: 2-s2.0-84908399872
论文题名: Type-segregated aerosol effects on regional monsoon activity: A study using ground-based experiments and model simulations
作者: Vijayakumar K ; , Devara P ; C ; S ; , Sonbawne S ; M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 99 起始页码: 650
结束页码: 659
语种: 英语
英文关键词: Aerosol types
; Cimel sun-sky radiometer
; Cluster trajectory analysis
; DREAM simulations
; MACC aerosol reanalysis
; Monsoon rainfall
Scopus关键词: Aerosol types
; DREAM simulations
; Monsoon rainfall
; Reanalysis
; Sun-sky radiometers
; Trajectory analysis
; black carbon
; organic carbon
; rain
; aerosol
; aerosol composition
; monitoring system
; monsoon
; optical depth
; radiometer
; regional climate
; satellite data
; simulation
; tropical meteorology
; urban area
; aerosol
; air temperature
; Article
; biomass
; climate
; feedback system
; humidity
; India
; meteorology
; molecular dynamics
; observational study
; optical depth
; particle size
; seasonal variation
; India
; Maharashtra
; Pune
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: Classification of observed aerosols into key types [e.g., clean-maritime (CM), desert-dust (DD), urban-industrial/biomass-burning (UI/BB), black carbon (BC), organic carbon (OC) and mixed-type aerosols (MA)] would facilitate to infer aerosol sources, effects, and feedback mechanisms, not only to improve the accuracy of satellite retrievals but also to quantify the assessment of aerosol radiative impacts on climate. In this paper, we report the results of a study conducted in this direction, employing a Cimel Sun-sky radiometer at the Indian Institute of Tropical Meteorology (IITM), Pune, India during 2008 and 2009, which represent two successive contrasting monsoon years. The study provided an observational evidence to show that the local sources are subject to heavy loading of absorbing aerosols (dust and black carbon), with strong seasonality closely linked to the monsoon annual rainfall cycle over Pune, a tropical urban station in India. The results revealed the absence of CM aerosols in the pre-monsoon as well as in the monsoon seasons of 2009 as opposed to 2008. Higher loading of dust aerosols is observed in the pre-monsoon and monsoon seasons of 2009; majority may be coated with fine BC aerosols from local emissions, leading to reduction in regional rainfall. Further, significant decrease in coarse-mode AOD and presence of carbonaceous aerosols, affecting the aerosol-cloud interaction and monsoon-rain processes via microphysics and dynamics, is considered responsible for the reduction in rainfall during 2009. Additionally, we discuss how optical depth, contributed by different types of aerosols, influences the distribution of monsoon rainfall over an urban region using the Monitoring Atmospheric Composition and Climate (MACC) aerosol reanalysis. Furthermore, predictions of the Dust REgional Atmospheric Model (DREAM) simulations combined with HYSPLIT (HYbrid Single Particle Lagrangian Integrated Trajectory) cluster model are also discussed in support of the observed features. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80526
Appears in Collections: 气候变化事实与影响
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作者单位: Physical Meteorology and Aerology Division, Indian Institute of Tropical Meteorology, Pashan, Pune, India; Amity Institute of Laser Technology and Optoelectronics, Amity University Haryana, Gurgaon-Manesar, India
Recommended Citation:
Vijayakumar K,, Devara P,C,et al. Type-segregated aerosol effects on regional monsoon activity: A study using ground-based experiments and model simulations[J]. Atmospheric Environment,2014-01-01,99