Distributed Feedback Interband Cascade Laser Based Laser Heterodyne Radiometer for Column Density of HDO and CH4 Measurements at Dunhuang, Northwest of China | |
Lu, Xingji1,2; Huang, Yinbo1,2; Wu, Pengfei1,2; Liu, Dandan3; Ma, Hongliang4; Wang, Guishi1; Cao, Zhensong1,2 | |
刊名 | REMOTE SENSING |
2022-03-01 | |
卷号 | 14 |
关键词 | laser heterodyne radiometer instrument line-shape retrieval algorithm HDO CH4 |
DOI | 10.3390/rs14061489 |
通讯作者 | Cao, Zhensong(zscao@aiofm.ac.cn) |
英文摘要 | Remote sensing of HDO and CH4 could provide valuable information on environmental and climatological studies. In a recent contribution, we reported a 3.53 mu m distributed feedback (DFB) inter-band cascade laser (ICL)-based heterodyne radiometer. In the present work, we present the details of measurements and inversions of HDO and CH4 at Dunhuang, Northwest of China. The instrument line shape (ILS) of laser heterodyne radiometer (LHR) is discussed firstly, and the spectral resolution is about 0.004 cm(-1) theoretically according to the ILS. Furthermore, the retrieval algorithm, optimal estimation method (OEM), combined with LBLRTM (Line-by-line Radiative Transfer Model) for retrieving the densities of atmospheric HDO and CH4 are investigated. The HDO densities were retrieved to be less than 1.0 ppmv, while the CH4 densities were around 1.79 ppmv from 20 to 24 July 2018. The correlation coefficient of water vapor densities retrieved by LHR and EM27/SUN is around 0.6, the potential reasons for the differences were discussed. Finally, in order to better understand the retrieval procedure, the Jacobian value and the Averaging Kernels are also discussed. |
资助项目 | Youth Innovation Promotion Association of Chinese Academy of Sciences[2015264] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA17010104] |
WOS关键词 | INDUCED THERMOELASTIC SPECTROSCOPY ; MIDINFRARED LASER ; HIGH-RESOLUTION ; OZONE PROFILES ; DIODE-LASER ; SPECTROMETER ; RETRIEVALS ; TES ; O-3 |
WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
语种 | 英语 |
出版者 | MDPI |
WOS记录号 | WOS:000774236400001 |
资助机构 | Youth Innovation Promotion Association of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/128237] |
专题 | 中国科学院合肥物质科学研究院 |
通讯作者 | Cao, Zhensong |
作者单位 | 1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Atmospher Opt, Hefei 230031, Peoples R China 2.Adv Laser Technol Lab Anhui Prov, Hefei 230037, Peoples R China 3.West Anhui Univ, Coll Elect & Optoelect Engn, Luan 237012, Peoples R China 4.Anqing Normal Univ, Sch Elect Engn & Intelligent Mfg, Anqing 246011, Peoples R China |
推荐引用方式 GB/T 7714 | Lu, Xingji,Huang, Yinbo,Wu, Pengfei,et al. Distributed Feedback Interband Cascade Laser Based Laser Heterodyne Radiometer for Column Density of HDO and CH4 Measurements at Dunhuang, Northwest of China[J]. REMOTE SENSING,2022,14. |
APA | Lu, Xingji.,Huang, Yinbo.,Wu, Pengfei.,Liu, Dandan.,Ma, Hongliang.,...&Cao, Zhensong.(2022).Distributed Feedback Interband Cascade Laser Based Laser Heterodyne Radiometer for Column Density of HDO and CH4 Measurements at Dunhuang, Northwest of China.REMOTE SENSING,14. |
MLA | Lu, Xingji,et al."Distributed Feedback Interband Cascade Laser Based Laser Heterodyne Radiometer for Column Density of HDO and CH4 Measurements at Dunhuang, Northwest of China".REMOTE SENSING 14(2022). |
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