Spatiotemporal Variations and Characteristics of CO, H2CO and HCN Emissions from Biomass Burning Monitored by FTIR Spectroscopy

被引：0

作者：

Zhu, Qianqian ^{[1
,2
]}

Wang, Wei ^{[1
]}

Shan, Changgong ^{[1
,3
,4
]}

Xie, Yu ^{[5
]}

Wu, Peng ^{[1
,2
]}

Liang, Bin ^{[1
,2
]}

Peng, Xuan ^{[1
,2
]}

Qian, Zhengwei ^{[5
]}

Liu, Cheng ^{[6
,7
,8
,9
]}

机构：

[1] Chinese Acad Sci, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Anhui Inst Opt & Fine Mech, Hefei 230031, Anhui, Peoples R China

[2] Univ Sci & Technol China, Hefei 230026, Peoples R China

[3] Guangdong Hongkong Macau Joint Lab Collaborat Inno, Guangzhou 510000, Guangdong, Peoples R China

[4] State Environm Protect Key Lab Sources & Control A, Beijing 100084, Peoples R China

[5] Hefei Univ, Dept Automat, Hefei 230601, Peoples R China

[6] Univ Sci & Technol China, Dept Precis Machinery & Precis Instrumentat, Hefei 230026, Peoples R China

[7] Univ Sci & Technol China, Anhui Prov Key Lab Polar Environm & Global Change, Hefei 230026, Peoples R China

[8] Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China

[9] Univ Sci & Technol China, Key Lab Precis Sci Instrumentat, Anhui Higher Educ Inst, Hefei 230026, Peoples R China

来源：

REMOTE SENSING | 2024年 / 16卷 / 19期

基金：

中国国家自然科学基金;

关键词：

remote sensing; enhancement ratio; biomass burning; total column; Fourier transform infrared spectroscopy; FIRE RADIATIVE ENERGY; EASTERN CHINA; SEASONAL-VARIATIONS; VERTICAL PROFILES; TIME-SERIES; MAUNA-LOA; FORMALDEHYDE; C2H6; TRANSPORT; SATELLITE;

D O I：

10.3390/rs16193586

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Studies of the impact of biomass burning and the emissions of trace gases from biomass burning, especially using long-term observations, are scarce in China. We utilize solar absorption spectra obtained via ground-based high-resolution Fourier transform infrared (FTIR) spectroscopy to retrieve the atmospheric total columns and vertical profiles of carbon monoxide (CO), formaldehyde (H2CO), and hydrogen cyanide (HCN) in Hefei, China. Seasonal and interannual variability in the three gases from 2016 to 2022 are analyzed. Atmospheric CO shows significant seasonal variations, peaking during spring and winter, and declining during summer, with a seasonal amplitude of 8.07 x 10(17) molecules cm(-2) and a seasonal variability of 29.35%. H2CO and HCN have similar seasonal patterns to each other, with high concentrations in summer and low concentrations in winter. The seasonal amplitude of H2CO and HCN are 1.89 x 10(16) molecules cm(-2) and 2.32 x 10(15) molecules cm(-2), respectively, with a seasonal variability of 133.07% and 34.69%, respectively. The means of the annual variation rate for CO, H2CO, and HCN are (-2.67 +/- 2.88)% yr(-1), (2.52 +/- 12.48)% yr(-1) and (-3.48 +/- 7.26)% yr(-1), respectively. To assess the influence of biomass burning on the variations in column concentrations of the three gases, the correlation between CO, H2CO, and HCN was analyzed. The months during which the monthly correlation coefficient between CO and H2CO with HCN exceeds 0.8, and the fire radiative power (FRP) observed by satellites is larger than its monthly average are regarded as a biomass-burning occurrence in Anhui province. Additionally, the enhancement ratios of Delta H2CO/Delta CO and Delta HCN/Delta CO were calculated for the periods impacted by the biomass burning. Finally, backward trajectory cluster analysis and the potential source contribution function (PSCF) calculation identified the air mass transport pathways and the potential source areas at the Hefei site.

引用

页数：21