Researching | Deep learning architecture based on satellite remote sensing data for estimating ground-level NO2 across Beijing-Tianjin-Hebei Region

Journal of Atmospheric and Environmental Optics, Volume. 18, Issue 2, 181(2023)

Deep learning architecture based on satellite remote sensing data for estimating ground-level NO₂ across Beijing-Tianjin-Hebei Region

FAN Xuanshuo1... WU Haibin2,*, CHEN Xinbing2 and SONG Wei2 |Show fewer author(s)

Author Affiliations

¹Institute of Material Science and Information Technology, Anhui University, Hefei 230601, China

²School of Physics and Material Science, Anhui University, Hefei 230601, China

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Figures & Tables(7)

Fig. 1. Study area and distribution of ground-level monitor sites

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Fig. 2. DNN network

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Fig. 3. Model structure

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Fig. 4. Scatter plots of Sample-CV (a) and Site-CV (b)

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Fig. 5. Spatial distribution of NO₂. (a) September 5, 2019; (b) September 16, 2019; (c) October 18, 2019

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Table 1. Data information

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Table 1. Data information

Data	Spatial resolution	Time resolution	Source
Monitoring sites NO₂/(μg·m^-3)	-	hour	CNEMC
NO₂ column densities/(mol·m^-2)	7.5 km $\times$ 3.5 km	day	S5P
Meteorological	0.25°	hour	ERA5
Elevation/m	90 m	-	SRTM3
Land use type	30 m	5 years	GlobelLan30
Population density /(people·km^-2)	30 arc-second	5 years	GPWv4

Table 2. Comparison of the various models

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Table 2. Comparison of the various models

Model	Sample-CV			Site-CV
Model	R²	RMSE	$M A E$	R²	$R M S E$	$M A E$
LR	0.68	9.42	7.37	0.55	11.52	9.05
GWR	0.73	8.97	6.46	0.71	9.71	7.20
SVR	0.75	8.39	6.33	0.72	9.35	6.69
GRNN	0.75	8.04	6.32	0.73	8.85	6.28
RF	0.80	7.74	5.39	0.71	9.70	6.84
DNN	0.80	7.72	5.31	0.74	8.95	6.01

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Xuanshuo FAN, Haibin WU, Xinbing CHEN, Wei SONG. Deep learning architecture based on satellite remote sensing data for estimating ground-level NO₂ across Beijing-Tianjin-Hebei Region[J]. Journal of Atmospheric and Environmental Optics, 2023, 18(2): 181

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Paper Information

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Received: Jun. 4, 2021

Accepted: --

Published Online: Jul. 7, 2023

The Author Email: WU Haibin (whb62@163.com)

DOI:10.3969/j.issn.1673-6141.2023.02.009

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