DOI: 10.1002/jgrd.50662
论文题名: Characteristics of tropospheric ozone variability over an urban site in Southeast Asia: A study based on MOZAIC and MOZART vertical profiles
作者: Sahu L.K. ; Sheel V. ; Kajino M. ; Gunthe S.S. ; Thouret V. ; Nedelec P. ; Smit H.G.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 15 起始页码: 8729
结束页码: 8747
语种: 英语
英文关键词: biomass burning
; MOZAIC
; Southeast Asia
; tropospheric ozone
; urban
Scopus关键词: Biomass
; Mixing
; Ozone
; Biomass-burning
; MOZAIC
; Southeast Asia
; Tropospheric ozone
; urban
; Troposphere
; air mass
; aircraft
; aircraft emission
; biomass burning
; boundary layer
; carbon monoxide
; convection
; El Nino
; long range forecast
; mixing ratio
; ozone
; seasonal variation
; trace gas
; trajectory
; troposphere
; urban site
; vertical profile
; Bangkok
; Central Region [Thailand]
; Indonesia
; Krung Thep Mahanakhon
; Thailand
英文摘要: The Measurement of Ozone and Water Vapor by Airbus In-Service Aircraft (MOZAIC) profiles of O3 and CO were analyzed to study their variation in the troposphere over Bangkok. Mixing ratios of O3 and CO were enhanced in planetary boundary layer (PBL) being highest in winter followed by summer and wet seasons. The daytime profiles of O3 show higher values compared to nighttime observations in PBL region, but little differences were observed in the free troposphere. The decreasing mixing ratios of O3 in the lower and upper troposphere were associated with shallow and deep convections, respectively. Back trajectory and fire count data indicate that the seasonal variations in trace gases were caused mainly by the regional shift in long-range transport and biomass-burning patterns. In wet season, flow of oceanic air and negligible presence of local biomass burning resulted in lowest O3 and CO, while their high levels in dry season were due to extensive biomass burning and transport of continental air masses. The Model for Ozone and Related Chemical Tracers (MOZART) underestimated both O3 and CO in the PBL region but overestimated these in the free troposphere. Simulations of O3 and CO also show the daytime/nighttime differences but do not capture several key features observed in the vertical distributions. The observed and simulated values of O3 and CO during September-November 2006 were significantly higher than the same period of 2005. The year-to-year differences were mainly due to El Niño-led extensive fires in Indonesia during 2006 but normal condition during 2005. Key Points Seasonal and year-to-year variations in vertical tropospheric ozone over Bangkok Impact of biomass burning in S-SE Asia during El Nino year 2006 Comparison of aircraft vertical profiles of ozone and CO with MOZART simulations ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63428
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
There are no files associated with this item.
作者单位: Space and Atmospheric Sciences Division, Physical Research Laboratory, Navrangpura, Ahmedabad 380009, India; Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, Japan; Environmental and Water Resources Engineering Division, Department of Civil Engineering, Indian Institute of Technology Madras, Chennai, India; Laboratoire d'A'erologie, CNRS, UMR 5560, Toulouse, France; Laboratoire d'Aérologie, Unité Mixte de Recherche 5560, Observatoire Midi-Pyrénées, Toulouse, France; Institute for Chemistry of the Polluted Atmosphere, Research Center Jülich, Jülich, Germany
Recommended Citation:
Sahu L.K.,Sheel V.,Kajino M.,et al. Characteristics of tropospheric ozone variability over an urban site in Southeast Asia: A study based on MOZAIC and MOZART vertical profiles[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(15)