Ozone and related gaseous pollutants in the boundary layer of eastern China: Overview of the recent measurements at a rural site

Wang, Tao; Cheung, Vincent; Anson, M.; Li, Yok-Sheung

doi:10.1029/2000gl012378

Cited by 144 publications

(100 citation statements)

References 22 publications

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“…In the afternoon, the PBL O 3 concentrations reached the daily maximum at 13:00-14:00 LT in summer but at 15:00-16:00 LT on annual average. The afternoon maximum of PBL O 3 is a typical feature downwind of an urban area, and the peak time often depends on the distance from the city (Logan, 1989;Wang et al, 2001Wang et al, , 2005Wang et al, , 2006a. The diurnal variation of MOZAIC O 3 in the lower PBL is similar to those measured in summer 2005 at a mountainous site about 50 km north of the center of Beijing (Wang et al, 2006a).…”

Section: Diurnal Variation Of Lower Tropospheric Osupporting

confidence: 59%

“…Wang et al (2001) showed an early summer maxima of surface O 3 (in May) at Lin'an, in centraleastern China just before the rainy season starts in that region, while southern China had an annual maximum in autumn (Lam et al, 2001;Wang et al, 2005). The different seasonal patterns can be explained by distinct meteorological conditions in different parts of China.…”

Section: Diurnal Variation Of Lower Tropospheric Omentioning

confidence: 99%

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Tropospheric ozone climatology over Beijing: analysis of aircraft data from the MOZAIC program

Ding

Wang²,

Thouret³

et al. 2008

Atmos. Chem. Phys.

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279

197

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Abstract. Ozone (O 3 ) profiles recorded over Beijing from 1995 to 2005 by the Measurement of Ozone and Water Vapor by Airbus In-Service Aircraft (MOZAIC) program were analyzed to provide a first climatology of tropospheric O 3 over Beijing and the North China Plains (NCPs), one of the most populated and polluted regions in China. A pooled method was adopted in the data analysis to reduce the influence of irregular sampling frequency. The tropospheric O 3 over Beijing shows a seasonal and vertical distribution typical of midlatitude locations in the Northern Hemisphere, but has higher daytime concentrations in the lower troposphere, when compared to New York City, Tokyo, and Paris at similar latitude. The tropospheric O 3 over Beijing exhibits a common summer maximum and a winter minimum, with a broad summer maximum in the middle troposphere and a narrower early summer (June) peak in the lower troposphere. Examination of meteorological and satellite data suggests that the lower tropospheric O 3 maximum in June is a result of strong photochemical production, transport of regional pollution, and possibly also more intense burnings of biomass in CentralEastern China. Trajectory analysis indicates that in summer the regional pollution from the NCPs, maybe mixed with urban plumes from Beijing, played important roles on the high O 3 concentrations in the boundary layer, but had limited impact on the O 3 concentrations in the middle troposphere. A comparison of the data recorded before and after 2000 reveals that O 3 in the lower troposphere over Beijing had a strong positive trend (approximately 2% per year from 1995 to 2005) in contrast to a flat or a decreasing trend over Tokyo, New York City, and Paris, indicating worsening photochemical pollution in Beijing and the NCPs.

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Section: Diurnal Variation Of Lower Tropospheric Osupporting

confidence: 59%

Section: Diurnal Variation Of Lower Tropospheric Omentioning

confidence: 99%

Tropospheric ozone climatology over Beijing: analysis of aircraft data from the MOZAIC program

Ding

Wang²,

Thouret³

et al. 2008

Atmos. Chem. Phys.

Self Cite

279

197

View full text Add to dashboard Cite

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“…Similarly, annual averaged NO 2 concentration 5.3 ppb was for 3 years period with highest annual NO 2 concentration 5. than the rate of increase of NO x 6.5 % year −1 in India between 2000 reported by Streets et al (2003). The O 3 concentrations linearly depend on emission of NO x in the rural sites (Wang et al 2001). It is seen from the …”

Section: Methodsmentioning

confidence: 52%

Measurements of ozone and its precursor nitrogen dioxide and crop yield losses due to cumulative ozone exposures over 40 ppb (AOT40) in rural coastal southern India

Elampari

Debaje

Jeyakumar³

et al. 2013

J Atmos Chem

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“…comm., 2002). The Linan site is located approximately 10 km north of the Linan county township (population B50,000), 50 km northwest of Hangzhou and 250 km southwest of Shanghai (Luo et al, 2000;Wang et al, 2001; location labeled in Fig. 2).…”

Section: Comparison Of Modeled Isoprene Fluxes With Fluxes Inferred Fmentioning

confidence: 99%

Past and present-day biogenic volatile organic compound emissions in East Asia

Steiner

Luo

Huang

2002

Atmospheric Environment

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Biogenic volatile organic carbon (VOC) emissions from vegetation in East Asia are estimated for two contrasting land-cover scenarios: near present-day conditions derived from satellite data and pre-disturbed land-cover based on climatological parameters and plant functional type. Hourly fluxes of isoprene and monoterpenes are calculated on a grid of 60 km Â 60 km cells covering much of East Asia using meteorological conditions derived from a 12-month simulation of the region using regional climate model, monthly leaf area indexes, and the Guenther et al. (J. Geophys. Res. 101 (1995) 1345) ecosystem-dependent emission factors. Total present-day isoprene emissions are estimated at approximately 12 Tg C yr À1 and monoterpene emissions at 6 Tg C yr À1 . These emissions are approximately 5.4 and 4 Tg C yr À1 lower than the estimated pre-disturbed emissions of isoprene and monoterpenes, respectively, largely due to the conversion of forested land to cropland. ORVOC emission estimates for the present-day scenario, obtained by assuming a constant ORVOC emission factor for all ecosystems, are slightly higher in magnitude than isoprene emissions. Present-day totals of combined biogenic and anthropogenic VOC emissions are generally larger than biogenic VOC emissions in the pre-disturbed scenario, indicating that human activities have led to a net increase in the atmospheric source of VOC in East Asia. r

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Ozone and related gaseous pollutants in the boundary layer of eastern China: Overview of the recent measurements at a rural site

Abstract: Abstract. We present a summary of the latest measurements of ozone (03)

Cited by 144 publications

References 22 publications

Tropospheric ozone climatology over Beijing: analysis of aircraft data from the MOZAIC program

Tropospheric ozone climatology over Beijing: analysis of aircraft data from the MOZAIC program

Measurements of ozone and its precursor nitrogen dioxide and crop yield losses due to cumulative ozone exposures over 40 ppb (AOT40) in rural coastal southern India

Past and present-day biogenic volatile organic compound emissions in East Asia

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