Comparison of column-integrated aerosol optical and physical properties in an urban and suburban site on the North China Plain

2015 ◽  
Vol 32 (4) ◽  
pp. 477-486 ◽  
Author(s):  
Xuehua Fan ◽  
Xiang’ao Xia ◽  
Hongbin Chen
Keyword(s):  
Physical Properties ◽  
North China Plain ◽  
North China ◽  
The North ◽  
The North China Plain ◽  
Suburban Site

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 Soil physical properties and maize root growth under different tillage systems in the North China Plain

2018 ◽  
Vol 6 (6) ◽  
pp. 669-676 ◽  
Author(s):  
Baizhao Ren ◽  
Xia Li ◽  
Shuting Dong ◽  
Peng Liu ◽  
Bin Zhao ◽  
...  
Keyword(s):  
Root Growth ◽  
Physical Properties ◽  
North China Plain ◽  
North China ◽  
Soil Physical Properties ◽  
Maize Root ◽  
Tillage Systems ◽  
The North ◽  
The North China Plain

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.

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
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