DOI: 10.1002/grl.50611
论文题名: Limited influence of dry deposition of semivolatile organic vapors on secondary organic aerosol formation in the urban plume
作者: Hodzic A. ; Madronich S. ; Aumont B. ; Lee-Taylor J. ; Karl T. ; Camredon M. ; Mouchel-Vallon C.
刊名: Geophysical Research Letters
ISSN: 0094-8891
EISSN: 1944-8622
出版年: 2013
卷: 40, 期: 12 起始页码: 3302
结束页码: 3307
语种: 英语
英文关键词: dry deposition
; secondary organic aerosol removal
; semi-volatile organic compounds
; SOA
; urban plume
Scopus关键词: Dry deposition
; Secondary organic aerosols
; Semivolatile organic compounds
; SOA
; Urban plumes
; Atmospheric aerosols
; Atmospheric chemistry
; Condensation
; Vapors
; Volatile organic compounds
; Deposition
; aerosol formation
; anthropogenic source
; atmospheric chemistry
; atmospheric plume
; atmospheric pollution
; boundary layer
; condensation
; dry deposition
; partitioning
; plume
; reaction kinetics
; volatile organic compound
; Federal District [Mexico]
; Mexico [North America]
; Mexico City
; Gekkonidae
英文摘要: The dry deposition of volatile organic compounds (VOCs) and its impact on secondary organic aerosols (SOA) are investigated in the Mexico City plume. Gas-phase chemistry and gas-particle partitioning of oxygenated VOCs are modeled with the Generator of Explicit Chemistry and Kinetics of Organics in the Atmosphere (GECKO-A) from C3 to C25 alkanes, alkenes, and light aromatics. Results show that dry deposition of oxidized gases is not an efficient sink for SOA, as it removes <5% of SOA within the city's boundary layer and ~15% downwind. Dry deposition competes with the gas-particle uptake, and only gases with fewer than ~12 carbons dry deposit while longer species partition to SOA. Because dry deposition of submicron aerosols is slow, condensation onto particles protects organic gases from deposition, thus increasing their atmospheric burden and lifetime. In the absence of this condensation, ~50% of the regionally produced mass would have been dry deposited. Key Points Dry deposition of anthropogenic organic vapors has small effect on regional SOA Dry deposition competes with the uptake of gases to the organic particle phase Neglecting SOA formation leads to underestimation of the lifetime of organics ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880521269&doi=10.1002%2fgrl.50611&partnerID=40&md5=77256e4e3c7f239bd5fe9a74191a8ce1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6155
Appears in Collections: 气候减缓与适应
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作者单位: NCAR, Boulder, CO 80301, United States
Recommended Citation:
Hodzic A.,Madronich S.,Aumont B.,et al. Limited influence of dry deposition of semivolatile organic vapors on secondary organic aerosol formation in the urban plume[J]. Geophysical Research Letters,2013-01-01,40(12).