DOI: 10.1002/2016GL070669
论文题名: Large-scale enhancement in aerosol absorption in the lower free troposphere over continental India during spring
作者: Nair V.S. ; Babu S.S. ; Gogoi M.M. ; Moorthy K.K.
刊名: Geophysical Research Letters
ISSN: 0094-8441
EISSN: 1944-8172
出版年: 2016
卷: 43, 期: 21 起始页码: 11453
结束页码: 11461
语种: 英语
英文关键词: absorption AOD
; absorption coefficient
; vertical profile
Scopus关键词: Aerosols
; Carbon
; Fighter aircraft
; Troposphere
; Absorption co-efficient
; Aerosol absorption
; Aircraft observations
; Indo-Gangetic Plains
; Long range transport
; Seasonal variation
; Vertical distributions
; Vertical profile
; Atmospheric movements
英文摘要: Aerosol absorption in the lower troposphere over continental India was assessed using extensive measurements of the vertical distribution of absorption coefficients aboard an instrumented aircraft. Measurements were made from seven base stations during winter (November–December 2012) and spring (April–May 2013), supplemented by the data from the networks of surface observatories. A definite enhancement in aerosol absorption has been observed in the lower free troposphere over the Indo-Gangetic Plain (IGP) during spring, along with a reduction near the surface. The regional mean aerosol absorption optical depth (AAOD) over IGP, which was derived from aircraft observations (integrated from the ground to 3 km), increased from 0.020 ± 0.009 in winter to 0.048 ± 0.01 in spring. The columnar AAOD depicted weak and distinctly different seasonal variations than that of surface level black carbon mass concentrations. This contrasting difference in the seasonality indicates the presence of elevated layers of absorbing aerosols during spring in association with the long-range transport and vertical convective lofting of aerosols. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84998980170&doi=10.1002%2f2016GL070669&partnerID=40&md5=6f7d70f9ffd942b08f4ed41abf5b3f19
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9404
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Space Physics Laboratory, Vikram Sarabhai Space Centre, Thiruvananthapuram, India
Recommended Citation:
Nair V.S.,Babu S.S.,Gogoi M.M.,et al. Large-scale enhancement in aerosol absorption in the lower free troposphere over continental India during spring[J]. Geophysical Research Letters,2016-01-01,43(21).