Point Source Carbon Emission Measurement Using Portable EM27/SUN Spectrometer: A Case Study of Hefei Wanneng Power Plant

Chao Li; Xianhua Wang; Hanhan Ye; Shichao Wu; Hailiang Shi; Erchang Sun; Yuan An

doi:10.3788/AOS241235

Acta Optica Sinica, Volume. 45, Issue 6, 0601003(2025)

Point Source Carbon Emission Measurement Using Portable EM27/SUN Spectrometer: A Case Study of Hefei Wanneng Power Plant

Chao Li^1,2,3, Xianhua Wang^1,2,3、*, Hanhan Ye^1,3, Shichao Wu^1,3, Hailiang Shi^1,2,3, Erchang Sun^1,2,3, and Yuan An^1,2,3

Author Affiliations

¹Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui , China

²University of Science and Technology of China, Hefei 230026, Anhui , China

³Key Laboratory of General Optical Calibration and Characterization Technology, Chinese Academy of Sciences, Hefei 230031, Anhui , China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(20)

Fig. 1. Diagram of smoke plume dispersion principle

Download full size

Fig. 2. Schematic of measurement instruments^[18]. (a) Outdoor photograph of a single measurement experiment; (b) external structure of EM27/SUN instrument; (c) internal structure of EM27/SUN instrument

Download full size

Fig. 3. Spectra measured by EM27/SUN. (a) 0.625‒2.5 μm; (b) around 1.6 μm (6300‒6400 cm^-1)

Download full size

Fig. 4. Diagram of synchronous observation locations of EM27/SUN and TCCON stations

Download full size

Fig. 5. $X_{C O_{2}}$ results from EM27/SUN compared to TCCON before and after correction (2021‒2023). (a) In 2021; (b) in 2022; (c) in 2023

Download full size

Fig. 6. Location map of WN Power Plant

Download full size

Fig. 7. Distribution of measurement point locations based on EM27/SUN instrument. (a) Distribution of measurement points; (b) surrounding environment of an upper-wind measurement point; (c) surrounding environment of a down-wind measurement point

Download full size

Fig. 8. Impact of lightpath obstruction on EM27/SUN measurements. (a) Spectral curves around 1.6 μm for measurement points P01‒P04; (b) sun intensity at P01‒P04

Download full size

Fig. 9. Variations in incident sun intensity for EM27/SUN measurement on April 2, 2022. (a) Before filtering; (b) after filtering

Download full size

Fig. 10. $X_{C O_{2}}$ results at the upper-wind and down-wind outlets of WN Power Plant at different time. (a) In 2021; (b) in 2022; (c) in 2023

Download full size

Fig. 11. Relationship between $X_{C O_{2}}$ variation characteristics and the distance from emission source

Download full size

Fig. 12. Simulation results of $X_{C O_{2}}$ , wind direction, and wind speed at Points 1 and 2 with and without buildings. (a) Geographic location of measurement points; (b) $X_{C O_{2}}$ ; (c) wind direction; (d) wind speed

Download full size

Fig. 13. $X_{C O_{2}}$ results of EM27/SUN at different measurement points. (a) Scatter plot; (b) box plot

Download full size

Fig. 14. Estimated CO₂ emission intensity over time. (a) Point 1; (b) Point 2

Download full size

Fig. 15. Estimated CO₂ emission intensity at different distances from the emission source

Download full size

Fig. 16. Measurement distance and estimated emission intensity from 2021 to 2023. (a) Statistics between measurement sections and emission source distances; (b) estimated results of annual average CO₂ emission intensity

Download full size

Table 1. Parameters of EM27/SUN instrument

View table

Table 1. Parameters of EM27/SUN instrument

Parameter	Information
Detector	InGaS， extended InGaAs
Spectral range	0.625‒2.5 μm
Spectral resolution	$<$ 0.5 cm^-1
Maximum optical path difference	1.8 cm
Field of view （FOV）	1.1 mrad
Operating temperature	-20‒50 $℃$

Table 2. $X_{C O_{2}}$ _{results from EM27/SUN before and after correction based on TCCON}
View table
Table 2. $X_{C O_{2}}$ _{results from EM27/SUN before and after correction based on TCCON}
Year Correction formula Before correction After correction
R² RMSE /10^-6 R² RMSE /10^-6
2021 y=0.67x+134.61 0.85 0.41 0.98 0.27
2022 y=0.64x+148.50 0.83 0.36 0.98 0.26
2023 y=0.66x+142.76 0.82 0.35 0.97 0.19

Table 3. Collection information in the measurement experiment at WN Power Plant
View table
Table 3. Collection information in the measurement experiment at WN Power Plant
Location Time
Year Date
Upper-wind 2021 November 24‒27
2022 October 17‒20
2023 March 28‒29， April 2‒3
Down-wind 2021 November 25‒26
2022 October 18‒19
2023 March 29， April 2

Table 4. Estimated CO₂ emission intensity at Points 1 and 2
View table
Table 4. Estimated CO₂ emission intensity at Points 1 and 2
Point CO₂ emission intensity /（kg/s） Retrieval error /（kg/s）
Point 1 228.47 $\pm$ 18.69
Point 2 235.18 $\pm$ 28.73

Tools

Get Citation

Copy Citation Text

Chao Li, Xianhua Wang, Hanhan Ye, Shichao Wu, Hailiang Shi, Erchang Sun, Yuan An. Point Source Carbon Emission Measurement Using Portable EM27/SUN Spectrometer: A Case Study of Hefei Wanneng Power Plant[J]. Acta Optica Sinica, 2025, 45(6): 0601003

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites