|
|
|
|
|
|
| Measurement of Water Vapor Absorption in the Ultraviolet Band Using MAX-DOAS and Evaluation of Its Influence on DOAS Retrieval |
| REN Hong-mei1, 2, LI Ang1*, HU Zhao-kun1, XIE Pin-hua1, 2, 3, XU Jin1, HUANG Ye-yuan1, 2, LI Xiao-mei1, 2, ZHONG Hong-yan1, 4, ZHANG Hai-rong1, 2, TIAN Xin1, 4, REN Bo2, ZHENG Jiang-yi1, 2, WANG Shuai5, CHAI Wen-xuan5 |
1. Key Laboratory of Environmental Optical and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
2. Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China
3. CAS Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
4. Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
5. State Environmental Protection Key Laboratory of Quality Control in Environmental Monitoring, China National Environment Monitoring Centre, Beijing 100012, China
|
|
|
|
|
Abstract The absorption of atmospheric water vapor gradually weakens from the microwave to the visible band, but the absorption in the ultraviolet band has been ignored. Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) is a passive optical remote sensing technology that can simultaneously retrieve a variety of trace gases such as NO2, SO2, HCHO, HONO and water vapor. It is often used for regional atmospheric three-dimensional distribution and transportation monitoring, and has the characteristics of low cost, high time resolution stability, and real-time monitoring. Water vapor is an important greenhouse gas, and the water vapor absorption in the ultraviolet band is often not considered when we retrieve trace gases, which may affect the retrieval of trace gases in the ultraviolet band, resulting in systematic errors. This study introduced the atmospheric water vapor retrieval in the ultraviolet band using MAX-DOAS observations in Qianxian, Xi’an, from June 1 to September 24, 2020. The optimal retrieval band in ultraviolet and visible were selected andcompared. The comparison results confirmed the water vapor absorption in the ultraviolet band, and we also evaluated the influence of ultraviolet water vapor absorption on the retrieval of trace gases in the same band. First, the optimal retrieval bands for water vapor in the ultraviolet (351~370 nm) and visible blue bands (434~455 nm) were selected according to the root mean square (RMS) and the absorption cross-sections of H2O and O4. Secondly, the O4 and H2O DSCD in the ultraviolet and visible blue bands were obtained by DOAS fitting, and the correlation between the two bands was analyzed. The two bands’ correlation coefficient of O4 and H2O DSCD in the two bands were 0.85 and 0.80. The ratio of O4 and H2O DSCD in the same band has also been analyzed, and the correlation coefficient in the two bands was 0.89. The high correlation coefficients of H2O DSCD and the ratio of H2O DSCD/O4DSCD in the ultraviolet and visible blue bands indicate that even Xi’an, which has a lower water vapor concentration relative to coastal cities, also has water vapor absorption in the ultraviolet band near 363 nm. It will affect the retrieval of other trace gases in the ultraviolet band using DOAS technology. Finally, the retrieval errors of gases (O4, HONO, and HCHO) that may be affected by water vapor absorption in the ultraviolet band were evaluated. The water vapor absorption in the ultraviolet band will increase O4DSCD, HONO DSCD, and HCHO DSCD during the fitting process, corresponding to the changes of +1.16%, +8.55%, and +9.04%, respectively.
|
|
Received: 2021-08-20
Accepted: 2022-02-16
|
|
|
|
Corresponding Authors:
LI Ang
E-mail: angli@aiofm.ac.cn
|
|
[1] Wang H, Souri A H, Abad G G, et al. Atmos. Meas. Tech., 2019, 12（9）：5183.
[2] Lampel J, Phler D, Polyansky O L, et al. Atmos. Chem. Phys., 2017, 17（2）：1271.
[3] Polyansky O L, Kyuberis A A, Lodi L, et al. Mon. Not. R. Astron. Soc., 2017, 466：1367.
[4] Wang Y, Dorner S, Donner S, et al. Atmos. Chem. Phys., 2019, 19：5417.
[5] Tian X, Xie P, Xu J, et al. Atmos. Chem. Phys., 2019, 19（5）：3375.
[6] Wang Y, Lampel J, Xie P, et al. Atmos. Chem. Phys., 2017, 17（3）：2189.
[7] Wang Y, Beirle S, Lampel J, et al. Atmos. Chem. Phys., 2017, 17（8）：5007.
[8] Frieß U, Baltink H K, Beirle S, et al. Atmos. Meas. Tech., 2016, 9（7）：3205.
[9] Drosoglou T, Bais A F, Zyrichidou I, et al. Atmos. Chem. Phys., 2017, 17（9）：5829.
[10] REN Hong-mei, LI Ang, HU Zhao-kun, et al（任红梅, 李 昂, 胡肇焜, 等）. Acta Phys. Sin.（物理学报）, 2020, 69（20）：204204.
[11] Irie H, Nakayama T, Shimizu A, et al. Atmos. Meas. Tech., 2015, 8：2775.
[12] Ortega I, Berg L K, Ferrare R A, et al. J. Quant. Spectrosc. Ra., 2016, 176：34.
[13] Zhang S, Sarwar G, Xing J, et al. Atmos. Chem. Phys., 2021, 21（20）：15809.
|
| [1] |
CHANG Zhen1, ZHONG Ming-yu2*, SU Jing-ming1, 2, SI Fu-qi1, WANG Yu3, ZHOU Hai-jin1, DOU Ke1, ZHANG Quan1. Study on the Reconstructing the NO2 Gas Distribution in a Vertical Plane Using MAX-DOAS[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(08): 2413-2418. |
| [2] |
PU Gui-juan1, 2, CHENG Si-yang3*, LI Song-kui4, LÜ Jin-guang2, CHEN Hua5, MA Jian-zhong3. Spectral Inversion and Variation Characteristics of Tropospheric NO2
Column Density in Lhasa, Tibet[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(06): 1725-1730. |
| [3] |
XU Heng1, LIU Hao-ran1*, JI Xiang-guang2, LI Qi-hua1, LIU Guo-hua1, OU Jin-ping1, ZHU Peng-cheng1. Study on the Tropospheric Column Density of NO2 in Shanghai Based on MAX-DOAS[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(09): 2720-2725. |
| [4] |
TIAN Xin1, 3, REN Bo3, 5, XIE Pin-hua1, 3, 4, 5, MOU Fu-sheng2*, XU Jin3, LI Ang3, LI Su-wen2, ZHENG Jiang-yi3LI Xiao-mei3, REN Hong-mei3, HUANG Xiao-hui1, PAN Yi-feng1, TIAN Wei1. Study on Vertical Distribution of Atmospheric HONO in Winter Based on Multi-Axis Differential Absorption Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(07): 2039-2046. |
| [5] |
LIU Guo-hua, LI Qi-hua*, OU Jin-ping, XU Heng, ZHU Peng-cheng, LIU Hao-ran. Passive Spectrum Measurement of HCHO in Chongqing Area Based on MAX-DOAS[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(01): 243-247. |
| [6] |
ZHU Peng-cheng1, LIU Hao-ran1*, JI Xiang-guang2, LI Qi-hua1, LIU Guo-hua1, TIAN Yuan1, XU Heng1. Study on Measurement of Troposphereic NO2 in Beijing by MAX-DOAS[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(07): 2153-2158. |
| [7] |
LIU Hao-ran1, HU Qi-hou2*, TAN Wei2, SU Wen-jing3, CHEN Yu-jia2, ZHU Yi-zhi2, LIU Jian-guo2. Study of the Urban NO2 Distribution and Emission Assessment Based on Mobile MAX-DOAS Observations[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(01): 11-19. |
| [8] |
PEI Guo-chao1, 2, LI Yuan3, 4*, BAI Ting-zhu1, 2. Temporal Variation Model of Ultraviolet Hyperspectral Solar Reference Spectrum[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(08): 2332-2338. |
| [9] |
LI Xiao-mei1, 2, XIE Pin-hua1, 2, 3*, XU Jin1, LI Ang1, TIAN Xin2, REN Bo2, HU Zhao-kun1, 2, WU Zi-yang2. Aerosol Observation and Research in Hefei by MAX-DOAS Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(03): 712-719. |
| [10] |
TIAN Xin1,2, XU Jin2, XIE Pin-hua1, 2, 3*, LI Ang2, HU Zhao-kun2, LI Xiao-mei2, REN Bo1,2, WU Zi-yang1,2. Retrieving Tropospheric Vertical Distribution in HCHO by Multi-Axis Differential Optical Absorption Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(08): 2325-2331. |
| [11] |
WEI Min-hong1,2, LIU Cheng2*, LI Su-wen1, CHEN Zheng-hui1, MOU Fu-sheng1. Measurement of Tropospheric HCHO by MAX-DOAS Based on QDOAS[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(08): 2332-2336. |
| [12] |
YAO Li-ming1, 2, ZHANG Ling3*, XU Zong4, 5, YANG Xiu-da6, WU Cheng-rui6, ZHANG Rui-rui3, YANG Fei3, WU Zhen-wei3, YAO Jian-ming3, GONG Xian-zu3, HU Li-qun3. In-Situ Wavelength Calibration of Fast-Response Extreme Ultraviolet Spectrometers on Experimental Advanced Superconducting Tokamak and Its Application[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(08): 2645-2650. |
| [13] |
CHENG Si-yang1, MA Jian-zhong1*, ZHOU Huai-gang2, JIN Jun-li3, LIU Yan4, DONG Fan2, ZHOU Li-yan2, YAN Peng1, 3. Spectral Inversion and Characteristics of NO2 Column Density at Shangdianzi Regional Atmospheric Background Station[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(11): 3470-3475. |
| [14] |
SHI Dong-chen，HUA Deng-xin*，LEI Ning, GAO Fei, WANG Li, YAN Qing, ZHOU Yi. Research of Solar-Blind Ultraviolet Raman Lidar for Water Vapor Measurement Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(05): 1430-1436. |
| [15] |
YANG Xiu-da, ZHANG Ling*, XU Zong, ZHANG Peng-fei, CHEN Ying-jie, HUANG Juan, WU Zhen-wei,. In-situ Absolute Intensity Calibration of Fast-Response Extreme Ultraviolet Spectrometer on Experimental Advanced Superconducting Tokamak[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(04): 1262-1267. |
|
|
|
|
