Parameterized atmospheric oxidation capacity and speciated OH reactivity over a suburban site in the North China Plain: A comparative study between summer and winter

2021 ◽  
Vol 773 ◽  
pp. 145264
Author(s):  
Yuan Yang ◽  
Yonghong Wang ◽  
Wei Huang ◽  
Dan Yao ◽  
Shuman Zhao ◽  
...  
Keyword(s):  
Comparative Study ◽  
North China Plain ◽  
North China ◽  
Atmospheric Oxidation ◽  
Oxidation Capacity ◽  
The North ◽  
The North China Plain ◽  
Suburban Site

scholarly journals Atmospheric reactivity and oxidation capacity during summer at a suburban site between Beijing and Tianjin

2020 ◽  
Vol 20 (13) ◽  
pp. 8181-8200
Author(s):  
Yuan Yang ◽  
Yonghong Wang ◽  
Putian Zhou ◽  
Dan Yao ◽  
Dongsheng Ji ◽  
...  
Keyword(s):  
North China Plain ◽  
North China ◽  
Transport Model ◽  
Oh Radicals ◽  
Chemical Transport Model ◽  
Oxidation Capacity ◽  
The North ◽  
The North China Plain ◽  
Atmospheric Reactivity ◽  
Suburban Site

Abstract. Hydroxyl (OH) radicals, nitrate (NO3) radicals and ozone (O3) play central roles in the troposphere because they control the lifetimes of many trace gases that result from anthropogenic and biogenic origins. To estimate the air chemistry, the atmospheric reactivity and oxidation capacity were comprehensively analyzed based on a parameterization method at a suburban site in Xianghe in the North China Plain from 6 July 2018 to 6 August 2018. The total OH, NO3 and O3 reactivities at the site varied from 9.2 to 69.6, 0.7 to 27.5 and 3.3×10-4 to 1.8×10-2 s−1 with campaign-averaged values of 27.5±9.7, 2.2±2.6 and 1.2±1.7×10-3 s−1 (± standard deviation), respectively. NOx (NO+NO2) was by far the main contributor to the reactivities of the three oxidants, with average values of 43 %–99 %. Alkenes dominated the OH, NO3 and O3 reactivities towards total nonmethane volatile organic compounds (NMVOCs), accounting for 42.9 %, 77.8 % and 94.0 %, respectively. The total OH, NO3 and O3 reactivities displayed similar diurnal variations with the lowest values during the afternoon but the highest values during rush hours, and the diurnal profile of NOx appears to be the major driver for the diurnal profiles of the reactivities of the three oxidants. A box model (a model to Simulate the concentrations of Organic vapors, Sulfuric Acid and Aerosols; SOSAA) derived from a column chemical transport model was used to simulate OH and NO3 concentrations during the observation period. The calculated atmospheric oxidation capacity (AOC) reached 4.5×108 moleculescm-3s-1, with a campaign-averaged value of 7.8×107 moleculescm-3s-1 dominated by OH (7.7×107 moleculescm-3s-1, 98.2 %), O3 (1.2×106 moleculescm-3s-1, 1.5 %) and NO3 (1.8×105 moleculescm-3s-1, 0.3 %). Overall, the integration of OH, NO3 and O3 reactivities analysis could provide useful insights for NMVOC pollution control in the North China Plain. We suggest that further studies, especially direct observations of OH and NO3 radical concentrations and their reactivities, are required to better understand trace gas reactivity and AOC.

ROx Budgets and O3 Formation during Summertime at Xianghe Suburban Site in the North China Plain

2021 ◽  
Author(s):  
Min Xue ◽  
Jianzhong Ma ◽  
Guiqian Tang ◽  
Shengrui Tong ◽  
Bo Hu ◽  
...  
Keyword(s):  
North China Plain ◽  
North China ◽  
The North ◽  
The North China Plain ◽  
Suburban Site

scholarly journals Comparative Study of PAHs in PM1 and PM2.5 at a Background Site in the North China Plain

2019 ◽  
Vol 19 (10) ◽  
pp. 2281-2293 ◽  
Author(s):  
Yan Zhang ◽  
Lingxiao Yang ◽  
Ying Gao ◽  
Jianmin Chen ◽  
Yanyan Li ◽  
...  
Keyword(s):  
Comparative Study ◽  
North China Plain ◽  
North China ◽  
Background Site ◽  
The North ◽  
The North China Plain

Evolution of boundary layer ozone in Shijiazhuang, a suburban site on the North China Plain

2019 ◽  
Vol 83 ◽  
pp. 152-160 ◽  
Author(s):  
Wei Zhao ◽  
Guiqian Tang ◽  
Huan Yu ◽  
Yang Yang ◽  
Yinghong Wang ◽  
...  
Keyword(s):  
Boundary Layer ◽  
North China Plain ◽  
North China ◽  
The North ◽  
The North China Plain ◽  
Boundary Layer Ozone ◽  
Suburban Site

Modelling water dynamics with DNDC and DAISY in a soil of the North China Plain: A comparative study

2010 ◽  
Vol 25 (4) ◽  
pp. 583-601 ◽  
Author(s):  
Roland Kröbel ◽  
Qinping Sun ◽  
Joachim Ingwersen ◽  
Xinping Chen ◽  
Fusuo Zhang ◽  
...  
Keyword(s):  
Comparative Study ◽  
North China Plain ◽  
North China ◽  
Water Dynamics ◽  
The North ◽  
The North China Plain
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