Influence of Southeast Asian biomass burning on ozone and carbon monoxide over subtropical Taiwan

Lin, Yu Chi; Lin, Chih-Hong; Lin, Peihua; Engling, Guenter; Lin, Yuan-Mao; Lan, Yung Yao; Chang, Chiung Wen June; Kuo, Tien Ho; Hsu, Wen Hu; Ting, Chia Chun

doi:10.1016/j.atmosenv.2012.09.050

Cited by 25 publications

(21 citation statements)

References 37 publications

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“…3, Lulin station records a constant level of PM2.5, PM10, CO and O 3 concentrations from March 23 rd to March 26 th . These values are in agreement with the concentrations recorded in Mei-Feng, a mountain air-quality station close to Lulin, during a biomass burning episode transported at upper level from SE Asia, as shown in [19] study. Similar concentration values were recorded also during the Dongsha experiment in March 2010 [20].…”

Section: Figure 2 A) Simulation Of Extinction Profiles By Macc-ii At supporting

confidence: 93%

“…The simultaneous enhancement in CO and O 3 concentrations, and HYSPLIT [21] backward trajectory analysis (Fig. 4) suggests that the aerosol layer, advected from 1900UTC of March 23 rd at NCU, is possibly smoke transported from the Indochine region, source of high biomass burning episodes during this period of the year [19]. This is confirmed by the AERONET NCU station which shows, starting from March 24 th , high Angstrom Exponent values (>1.5) and Fine Mode Fraction (>0.95).…”

Section: Figure 2 A) Simulation Of Extinction Profiles By Macc-ii At mentioning

confidence: 99%

“…induced changes in the cloud microphysics, water content and coverage) effects on Earth radiative budget [1], [2]. Moreover, a recent study put in evidence that aerosols are a serious threat for human health, as long-term exposure to air pollution is associated with a reduction of 3 years in life expectancy [19]. To simulate and forecast particle concentrations, the European Center for Medium-Range Weather Forecasts (ECMWF), trough the MACC-II project [4], [5], [6] has developed a global aerosol transport model to produce aerosol forecasts for air quality and reanalysis of meteorological and aerosols data over the last decades to provide information on how aerosols are linked to a changing climate [2].…”

Section: Introductionmentioning

confidence: 99%

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MPLNET lidar data assimilation in the ECMWF MACC-II Aerosol system: evaluation of model performances at NCU lidar station

et al. 2014

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Atmospheric profiles of the optical aerosol properties through the retrieved backscattering or extinction coefficients by lidar measurements can improve drastically the MACC-II aerosol model performances on vertical dimension. Currently the MODIS Aerosol Optical Depth data (both from Terra and Aqua) are assimilated into the model. Being a columnintegrated quantity, these data do not modify the model aerosol vertical profile, especially if the aerosols are not interactive with the meteorology. Since 1999, the MPLNET lidar network provides continuously lidar data measurements from worldwide permanent stations (currently 21), deployed from the Arctic to the Antarctic regions and in tropical and equatorial zones. The purpose of this study is to show the first preliminary results of the intercomparison of MPLNET lidar data against the ECWMF MACC-II aerosol model, for a selected MPLNET permanent observational site at National Central University of Taiwan. Assessing the model performances it is the first step for future near-real time lidar data assimilation into MACC-II aerosol model forecast.

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Section: Figure 2 A) Simulation Of Extinction Profiles By Macc-ii At supporting

confidence: 93%

Section: Figure 2 A) Simulation Of Extinction Profiles By Macc-ii At mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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MPLNET lidar data assimilation in the ECMWF MACC-II Aerosol system: evaluation of model performances at NCU lidar station

et al. 2014

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“…This is mainly due to higher rainfall received during year 2010, leading to reduction in fire activities and hence lesser enhancements in the levels. The contribution of biomass burning in springtime maxima in ozone and CO was also observed at other high‐altitude sites (Mount Lulin [ Ou Yang et al ., ] and Mount Mie‐Feng [ Lin et al ., ]) in central Taiwan. The enhancement in ozone and CO at Mount Mie‐Feng was reported to be 8 ppb and 45 ppb, respectively, and it was suggested that the pollutants emitted by Southeast Asian biomass burning could be transported and influence air quality over subtropical Taiwan in springtime [ Lin et al ., ].…”

Section: Resultsmentioning

confidence: 99%

First simultaneous measurements of ozone, CO, and NO_y at a high‐altitude regional representative site in the central Himalayas

et al. 2014

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Simultaneous in situ measurements of ozone, CO, and NO y have been made for the first time at a high altitude site Nainital (29. 37°N, 79.45°E, 1958 m above mean sea level) in the central Himalayas during [2009][2010][2011]. CO and NO y levels discern slight enhancements during the daytime, unlike in ozone. The diurnal patterns are attributed mainly to the dynamical processes including vertical winds and the boundary layer evolution. Springtime higher levels of ozone (57.5 ± 12.6 ppbv), CO (215.2 ± 147 ppbv), and NO y (1918 ± 1769.3 parts per trillion by volume (pptv)) have been attributed mainly to regional pollution supplemented with northern Indian biomass burning. However, lower levels of ozone (34.4 ± 18.9 ppbv), CO (146.6 ± 71 ppbv), and NO y (1128.6 ± 1035 pptv) during summer monsoon are shown to be associated with the arrival of air mass originated from marine regions. Downward transport from higher altitudes is estimated to enhance surface ozone levels over Nainital by 6.1-18.8 ppbv. The classification based on air mass residence time, altitude variations along trajectory, and boundary layer shows higher levels of ozone (57 ± 14 ppbv), CO (206 ± 125 ppbv), and NO y (1856 ± 1596 pptv) in the continental air masses when compared with their respective values (28 ± 13 ppbv, 142 ± 47 ppbv, and 226 ± 165 pptv) in the regional background air masses. In general, positive interspecies correlations are observed which suggest the transport of air mass from common source regions (except during winter). Ozone-CO and ozone-NO y slope values are found to be lower in comparison to those at other global sites, which clearly indicates incomplete in situ photochemistry and greater role of transport processes in this region. The higher CO/NO y value also confirms minimal influence of fresh emissions at the site. Enhancements in ozone, CO, and NO y during high fire activity period are estimated to be 4-18%, 15-76%, and 35-51%, respectively. Despite higher CO and NO y concentrations at Nainital, ozone levels are nearly similar to those at other global highaltitude sites.

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“…Surface and satellite observations along with backward trajectory analysis [43] showed that 56 % of the acute pollution events with enhanced ozone at a surface station in Nepal were likely to be affected by emissions from open fires along the Himalayan foothills, the Indian Subcontinent and the Northern Indo-Gangetic Plain. In subtropical Taiwan, a study has calculated higher ozone by 8 ppbv in March in air masses that have passed over fire regions in the Mekong [44]. Closer to the equator, it has been found that high ozone episodes in Malaysia are associated with transport of biomass burning plumes from Sumatra [45].…”

Section: Gasesmentioning

confidence: 99%

Fire Influences on Atmospheric Composition, Air Quality and Climate

Voulgarakis

Field

2015

Curr Pollution Rep

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Fires impact atmospheric composition through their emissions, which range from long-lived gases to shortlived gases and aerosols. Effects are typically larger in the tropics and boreal regions but can also be substantial in highly populated areas in the northern mid-latitudes. In all regions, fire can impact air quality and health. Similarly, its effect on large-scale atmospheric processes, including regional and global atmospheric chemistry and climate forcing, can be substantial, but this remains largely unexplored. The impacts are primarily realised in the boundary layer and lower free troposphere but can also be noticeable in upper troposphere/lower stratosphere (UT/LS) region, for the most intense fires. In this review, we summarise the recent literature on findings related to fire impact on atmospheric composition, air quality and climate. We explore both observational and modelling approaches and present information on key regions and on the globe as a whole. We also discuss the current and future directions in this area of research, focusing on the major advances in emission estimates, the emerging efforts to include fire as a component in Earth system modelling and the use of modelling to assess health impacts of fire emissions.

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Influence of Southeast Asian biomass burning on ozone and carbon monoxide over subtropical Taiwan

Cited by 25 publications

References 37 publications

MPLNET lidar data assimilation in the ECMWF MACC-II Aerosol system: evaluation of model performances at NCU lidar station

MPLNET lidar data assimilation in the ECMWF MACC-II Aerosol system: evaluation of model performances at NCU lidar station

First simultaneous measurements of ozone, CO, and NO_y at a high‐altitude regional representative site in the central Himalayas

Fire Influences on Atmospheric Composition, Air Quality and Climate

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Influence of Southeast Asian biomass burning on ozone and carbon monoxide over subtropical Taiwan

Cited by 25 publications

References 37 publications

MPLNET lidar data assimilation in the ECMWF MACC-II Aerosol system: evaluation of model performances at NCU lidar station

MPLNET lidar data assimilation in the ECMWF MACC-II Aerosol system: evaluation of model performances at NCU lidar station

First simultaneous measurements of ozone, CO, and NOy at a high‐altitude regional representative site in the central Himalayas

Fire Influences on Atmospheric Composition, Air Quality and Climate

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First simultaneous measurements of ozone, CO, and NO_y at a high‐altitude regional representative site in the central Himalayas