Spectroscopy and Spectral Analysis, Volume. 41, Issue 1, 11(2021)
Study of the Urban NO2 Distribution and Emission Assessment Based on Mobile MAX-DOAS Observations
Figures & Tables(11)
Fig. 1. Schematic diagram of the experimental setup of the MAX-DOAS instrument
Fig. 2. The measurement routes taken and Hengshui city structure during this campaign
Fig. 4. NO2 time series (a) and correlation (b) between the stationary and mobile MAX-DOAS during the inter-comparison measurement
Fig. 5. Spatial distribution of NO2 VCDs and the wind information during this campaign
The black arrow represents the wind field information, and the red five-pointed star represents the location of the stationary MA-DOAS
Fig. 6. Comparison of NO2 between the stationary and mobile MAX-DOAS during the mobile measurement on February 9, 2018
Yellow shadow: the time when the vehicle approaching the stationary MAX-DOAS;Gray shadow: time when the vehicle reached the eastern region of Hengshui
Fig. 7. Spatial distribution of tropospheric mean NO2 VCDs measured by OMI satellite from 16th Jan 2018 to 15th Feb 2018. The 0~100 m 24 h backward trajectories of air masses are also shown to illustrate the transportation of atmospheric NO2 during the measurement campaign
The green, brown and pink lines indicate the clusters in different directions
Table 1. Driving direction, wind field and weather conditions during this campaign
View tableView in ArticleTable 1. Driving direction, wind field and weather conditions during this campaign
实验类型 日期 时间 天气 风向风速 行驶方向 平行对比实验 2018.01.30 10:10—13:40 晴—多云 西风1~2级 - 走航观测实验 2018.01.24 10:50—11:41 晴 微风 顺时针 2018.01.24 13:09—14:06 逆时针 2018.02.09 9:54—11:00 晴—多云 西北风3~4级 逆时针 2018.02.09 11:33—12:38 顺时针
Table 2. Parameter settings used for NO2 DSCD retrieval
View tableView in ArticleTable 2. Parameter settings used for NO2 DSCD retrieval
参数 参数设置 Wavelength range 338~370 nm NO2 Vandaele et al. (1998), 220 K, 294 K, I 0-correction* (SCD of 1017 molecules·cm-2)HCHO Meller and Moortgat (2000), 297 K O3 Serdyuchenko et al. (2014), 223 K, 243 K, I 0-correction* (SCD of 1020 molecules·cm-2)O4 Thalman and Volkamer (2013), 293 K BrO Fleischmann et al. (2004), 223 K Ring Ring spectra calculated with QDOAS according to Chance and Spurr (1997) Polynomial degree Order 5 Intensity offset Constant Wavelength calibration Based on a high resolution solar reference spectrum (SAO2010 solar spectra)
Table 3. NO2 Mean VCDs of each area of Hengshui during the mobile MAX-DOAS measurement (1015 molecule·cm-2)
View tableView in ArticleTable 3. NO2 Mean VCDs of each area of Hengshui during the mobile MAX-DOAS measurement (1015 molecule·cm-2)
日期 时间 浓度范围 平均值±标准差 东部平均值±标准差 西部平均值±标准差 2018.01.24 10:50—11:41 16.70~50.79 28.45±9.26 34.84±8.18 21.52±3.69 13:09~14:06 9.21~56.33 30.20±1.03 33.81±8.36 24.88±1.07 2018.02.09 9:54—11:00 20.18~44.42 27.77±4.36 28.12±4.03 27.12±4.91 11:33~12:38 0.89~40.32 22.42±5.70 24.22±5.81 21.13±3.69
Table 4. NO2 emissions, input and output flux from outer route of Hengshui (1024 molecs-1)
View tableView in ArticleTable 4. NO2 emissions, input and output flux from outer route of Hengshui (1024 molecs-1)
日期 时间 输出 输入 城市
排放输入/
输出/%排放/
输出/%2018.01.24 10:50—11:41 1.76 1.66 0.10 94.32 5.68 2018.01.24 13:09—14:06 1.54 1.43 0.11 92.86 7.14 2018.02.09 9:54—11:00 22.40 21.54 0.86 96.16 3.84
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Hao-ran LIU, Qi-hou HU, Wei TAN, Wen-jing SU, Yu-jia CHEN, Yi-zhi ZHU, Jian-guo LIU. Study of the Urban NO2 Distribution and Emission Assessment Based on Mobile MAX-DOAS Observations[J]. Spectroscopy and Spectral Analysis, 2021, 41(1): 11
Paper Information
Category: Research Articles
Received: Dec. 2, 2019
Accepted: --
Published Online: Apr. 8, 2021
The Author Email: Hao-ran LIU (hrl@ahu.edu.cn)
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