DOI: 10.1029/2018JD028480
Scopus记录号: 2-s2.0-85053452540
论文题名: First MAX-DOAS Observations of Formaldehyde and Glyoxal in Phimai, Thailand
作者: Hoque H.M.S. ; Irie H. ; Damiani A.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 17 起始页码: 9957
结束页码: 9975
语种: 英语
英文关键词: glyoxal to formaldehyde ratio (RGF)
; MAX-DOAS
英文摘要: Multiaxis differential optical absorption spectroscopy (MAX-DOAS) observations were performed for the first time in Thailand at the rural site of Phimai (15.18°N, 102.56°E). Vertical profiles of eight components were retrieved separately using the Japanese MAX-DOAS profile retrieval algorithm, version 2. Here we focused on formaldehyde (HCHO) and glyoxal (CHOCHO) and evaluated their volume mixing ratios in the lowest layer (0–1 km) of the retrieved vertical profiles. We estimated the ratio of CHOCHO to HCHO concentrations (RGF), which has been suggested to be an important tracer indicative of changes in volatile organic compound emissions. Higher HCHO and CHOCHO concentrations were observed during the dry season, reflecting the influence of biomass burning. The mean RGF for the Phimai site was estimated to be 0.032 ± 0.005. The estimated RGF for the dry season (0.028 ± 0.002) was lower than that during the wet season (0.040 ± 0.003), when biogenic emissions were dominated. While Phimai can be characterized as an environment with low nitrogen dioxide (NO2) concentrations (<1 ppbv), the potential impact of biomass burning on the lower RGF during the dry season was investigated by the occasional enhancement of NO2 concentrations as a tracer of biomass burning. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113189
Appears in Collections: 气候减缓与适应
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作者单位: Center for Environmental Remote Sensing (CEReS), Chiba University, Chiba, Japan
Recommended Citation:
Hoque H.M.S.,Irie H.,Damiani A.. First MAX-DOAS Observations of Formaldehyde and Glyoxal in Phimai, Thailand[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(17)