Characteristics of the vertical distribution of tropospheric ozone in late autumn at Yangjiang station in Pearl River Delta (PRD), China. PartⅠ: Observed event

Zhang，W.1,2,4; Zou，Y.2; Zheng，X. D.3; Wang，N.2; Yan，H.1,4,5; Chen，Y. P.1,4,5; Zhao，X. J.6; Ji，Z. P.7; Li，F.2; Mai，B. R.2; Yin，C. Q.2; Deng，T.2; Fan，L. Y.1,4,5; Deng，X. J.2

2021

10.1016/j.atmosenv.2020.117898

ATMOSPHERIC ENVIRONMENT   影响因子和分区

1352-2310

1873-2844

Ozone has become the main factor affecting the air quality in the Pearl River Delta (PRD) in recent years, and a clear understanding source of ozone pollution is a top priority of ozone pollution prevention. However, the vertical distribution of tropospheric ozone in the PRD is poorly understood. Based on daily ozone sounding data obtained in Yangjiang (111°58'00" E, 21°50'00" N), Guangdong Province, from 18 November tjo 3 December 2013, the detailed vertical distribution of tropospheric ozone and its influencing factors were determined and compared with weekly autumn ozone profile data obtained at the Hong Kong Observatory (HKO) and corresponding tropospheric column ozone (TCO) datasets from the Ozone Monitoring Instrument (OMI) and Microwave Limb Sounder (MLS) onboard satellite AURA. Overall, the ozone profiles observed in Yangjiang are in accordance with those of the HKO in terms of the vertical structure. The TCO values are 34.2 ± 4.0 and 34.3 ± 4.6 DU, respectively, that are, 4 DU higher than those of satellite data, indicating that the OMI/MLS product underestimates the TCO level in the PRD region. The Yangjiang ozone profiles indicate significant variations in the ozone vertical structure and concentration during the observation period. A significant ozone peak permanently occurs in the lower troposphere at 1.1 ± 0.4 km above the surface. The vertical structural difference is mainly reflected in the presence of low-ozone strata (below 30 ppbv) near the tropopause and ozone peaks and high-ozone stratification in the middle and upper troposphere. The average ozone peak concentrations in the lower, middle, and upper troposphere are 65.2 ± 9.9, 57.8 ± 7.7, 71.8 ± 13.6 ppbv, respectively, which are higher than the average ground-level ozone concentration (48.9 ± 9.4 ppbv). Based on the analysis of the profile characteristics, weather conditions, and backward trajectories, it can be concluded that the low-ozone strata near the tropopause are caused by the regional transport of the tropical air mass from the tropical cyclone storm area. Potential vorticity analysis shows that stratosphere-troposphere exchange (STE) is the main reason for the formation of the ozone peaks and its varying concentrations in the middle and upper troposphere. Photochemical reactions represent the main factor affecting the ozone concentration in the lower troposphere. The STE is also an important factor affecting the ozone in the lower troposphere, leading to an increase in the surface ozone concentration by ~10.9 ppbv.

Low-ozone strata Ozone peak Ozone vertical distribution characteristic Ozonesonde Stratosphere-troposphere exchange (STE)

SCI ; EI

英语

其他

National Key Research and Development Program of China[2019YFCO214605][2016YFCO202000][2018YFCO213901] ; National Natural Science Foundation of China[41805131][41905123][41775037][41605092] ; Guangdong Basic and Applied Basic Research Foundation[2019A1515110791] ; Provincial Natural Science Foundation of Guangdong[2020A1515011136] ; Science and Technology Innovation Team Plan of Guangdong Meteorological Bureau[201704]

Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences

Environmental Sciences ; Meteorology & Atmospheric Sciences

WOS:000591727900001

PERGAMON-ELSEVIER SCIENCE LTD

20203809184497

Tropics ; Gems ; Air quality ; Clouds ; Ultraviolet spectrometers ; Meteorological instruments ; Troposphere ; River pollution

Meteorology:443 ; Atmospheric Properties:443.1 ; Meteorological Instrumentation:443.2 ; Air Pollution Control:451.2 ; Water Pollution:453 ; Gems:482.2.1 ; Optical Devices and Systems:741.3 ; Chemical Products Generally:804

GEOSCIENCES

2-s2.0-85090725034

Scopus

1.School of Environment and Energy,South China University of Technology,Guangzhou,SCUT,510006,China
2.Institute of Tropical and Marine Meteorology of China Meteorological Administration,Guangzhou,510640,China
3.Chinese Academy of Meteorological Sciences,Beijing,100081,China
4.Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control,Guangzhou,SCUT,510006,China
5.National Engineering Laboratory for Volatile Organic Compounds Pollution Control Technology and Equipment,Guangzhou,SCUT,510006,China
6.Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
7.Guangdong Meteorological Observatory,Guangzhou,510080,China

Zhang，W.,Zou，Y.,Zheng，X. D.,et al. Characteristics of the vertical distribution of tropospheric ozone in late autumn at Yangjiang station in Pearl River Delta (PRD), China. PartⅠ: Observed event[J]. ATMOSPHERIC ENVIRONMENT,2021,244.

Zhang，W..,Zou，Y..,Zheng，X. D..,Wang，N..,Yan，H..,...&Deng，X. J..(2021).Characteristics of the vertical distribution of tropospheric ozone in late autumn at Yangjiang station in Pearl River Delta (PRD), China. PartⅠ: Observed event.ATMOSPHERIC ENVIRONMENT,244.

Zhang，W.,et al."Characteristics of the vertical distribution of tropospheric ozone in late autumn at Yangjiang station in Pearl River Delta (PRD), China. PartⅠ: Observed event".ATMOSPHERIC ENVIRONMENT 244(2021).