Understanding the variations and sources of CO, C2H2, C2H6, H2CO, and HCN columns based on 3 years of new ground-based Fourier transform infrared measurements at Xianghe, China

被引:3
|
作者
Zhou, Minqiang [1 ,2 ]
Langerock, Bavo [2 ]
Wang, Pucai [1 ]
Vigouroux, Corinne [2 ]
Ni, Qichen [1 ]
Hermans, Christian [2 ]
Dils, Bart [2 ]
Kumps, Nicolas [2 ]
Nan, Weidong [3 ]
De Maziere, Martine [2 ]
机构
[1] Chinese Acad Sci, Inst Atmospher Phys, CNRC & LAGEO, Beijing, Peoples R China
[2] Royal Belgian Inst Space Aeron BIRA IASB, Brussels, Belgium
[3] Chinese Acad Sci, Inst Atmospher Phys, Xianghe Observ Whole Atmosphere, Xianghe, Peoples R China
基金
中国国家自然科学基金;
关键词
REGIONAL EMISSION INVENTORY; TIME-SERIES; CARBON-MONOXIDE; REUNION ISLAND; ANTHROPOGENIC EMISSIONS; OZONE FORMATION; AIR-POLLUTANTS; TRENDS; HCOOH; NDACC;
D O I
10.5194/amt-16-273-2023
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
Carbon monoxide (CO), acetylene (C2H2), ethane (C2H6), formaldehyde (H2CO), and hydrogen cyanide (HCN) are important trace gases in the atmosphere. They are highly related to biomass burning, fossil fuel combustion, and biogenic emissions globally, affecting air quality and climate change. However, the variations and correlations among these species are not well known in northern China due to limited measurements. In June 2018, we installed a new ground-based Fourier transform infrared (FTIR) spectrometer (Bruker IFS 125HR) recording mid-infrared high spectral resolution solar-absorption spectra at Xianghe (39.75 degrees N, 116.96 degrees E), China. In this study, we use the latest SFIT4 code, together with advanced a priori profiling and spectroscopy, to retrieve these five species from the FTIR spectra measured between June 2018 and November 2021. The retrieval strategies, retrieval information and retrieval uncertainties are presented and discussed. For the first time, the time series, variations, and correlations of these five species are analyzed at a typical polluted site in northern China. The seasonal variations in C2H2 and C2H6 total columns show a maximum in winter-spring and a minimum in autumn, whereas the seasonal variations in H2CO and HCN show a maximum in summer and a minimum in winter. Unlike the other four species, the FTIR measurements show that there is almost no seasonal variation in the CO column. The correlation coefficients (R) between the synoptic variations in CO and the other four species (C2H2, C2H6, H2CO, and HCN) are between 0.68 and 0.80, indicating that they are affected by common sources. Using the FLEXPART model backward simulations and satellite fire measurements, we find that the variations in CO, C2H2, C2H6, H2CO columns are mainly dominated by the local anthropogenic emissions, while HCN column observed at Xianghe is a good tracer to identify fire emissions.
引用
收藏
页码:273 / 293
页数:21
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