气候变化领域集成服务门户(CCPortal): Atmospheric HDO Abundance Measurements in the Tibetan Plateau Based on Laser Heterodyne Radiometer

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DOI	10.3390/rs16030459
	Atmospheric HDO Abundance Measurements in the Tibetan Plateau Based on Laser Heterodyne Radiometer
	Lu, Xingji; Huang, Yinbo; Wu, Pengfei; Huang, Jun; Luo, Tao; Liu, Qiang; Cao, Zhensong
发表日期	2024
EISSN	2072-4292
卷号	16 期号:3
英文摘要	The Tibet Plateau is known as the third pole of the world, and its environmental change profoundly impacts East Asia and even the global climate. HDO is the stable isotope of water vapor, which acts as an ideal tracer for studying the water cycle, and which is commonly used for atmospheric circulation and climatic studies. To monitor the water vapor isotopic abundance in the Tibetan Plateau, a portable laser heterodyne radiometer was operated in Golmud in August 2019. The radiometer utilizes a narrow-linewidth 3.66 mu m distributed feedback interband cascade laser as the local oscillator, the heterodyne module is been optimized and the radiometer performs with high resolution and stability in obtaining spectral data. Furthermore, the absorption spectra of atmospheric HDO and H2O are obtained, and the retrieval method for water vapor isotopic abundance is discussed. The optimal estimation method is adopted to retrieve the density of HDO and H2O. The average column density of H2O was 1.22 g/cm2, and the HDO/H2O ratio in Golmud was 178 +/- 15 x 10-6 during the observation. For a better understanding of the retrieval, the retrieval errors are analyzed and compared. The results indicate that the smoothing error is significantly higher than the measurement error in this work. The backward trajectory analysis of atmospheric transport is used to investigate the relationship between water vapor density and atmospheric motion. The results indicate that the variation of H2O column density and HDO/H2O ratio have a relationship with atmospheric movements.
关键词	laser heterodyne radiometer isotopic abundance atmospheric transportation retrieval algorithm backward trajectory analysis
英文关键词	MIDINFRARED LASER; OZONE PROFILES; HDO/H2O RATIO; WATER; SPECTROSCOPY; H2O; RETRIEVALS; O-17/O-16; H-2/H-1; MARS
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:001160300800001
来源期刊	REMOTE SENSING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283717
作者单位	Chinese Academy of Sciences; Hefei Institutes of Physical Science, CAS; Anhui Institute of Optics & Fine Mechanics (AIOFM), CAS
推荐引用方式 GB/T 7714	Lu, Xingji,Huang, Yinbo,Wu, Pengfei,et al. Atmospheric HDO Abundance Measurements in the Tibetan Plateau Based on Laser Heterodyne Radiometer[J],2024,16(3).
APA	Lu, Xingji.,Huang, Yinbo.,Wu, Pengfei.,Huang, Jun.,Luo, Tao.,...&Cao, Zhensong.(2024).Atmospheric HDO Abundance Measurements in the Tibetan Plateau Based on Laser Heterodyne Radiometer.REMOTE SENSING,16(3).
MLA	Lu, Xingji,et al."Atmospheric HDO Abundance Measurements in the Tibetan Plateau Based on Laser Heterodyne Radiometer".REMOTE SENSING 16.3(2024).