[1] Li M J, Li Y, Cheng J X et al. Current situation and prospect of air pollutant emission standards for ships[J]. IOP Conference Series: Materials Science and Engineering, 631, 042014(2019).

[2] Liu W Q. Opportunities and challenges for development of atmospheric environmental optics monitoring technique under “double carbon” goal[J]. Acta Optica Sinica, 42, 0600001(2022).

[3] Jia P C, Cao N W, Fan G Q et al. Differential absorption lidar monitoring of heavy pollution process[J]. Laser＆Optoelectronics Progress, 58, 0901002(2021).

[4] Wiacek A, Li L, Tobin K et al. Characterization of trace gas emissions at an intermediate port[J]. Atmospheric Chemistry and Physics, 18, 13787-13812(2018).

[5] Zhang B, Gao C, Guo Y C et al. Measurement method for low-concentration SO2 based on statistics and DOAS[J]. Acta Photonica Sinica, 47, 0230001(2018).

[6] Liu J, Si F Q, Zhou H J et al. Estimation of sulfur dioxide emission from power plant using imaging differential optical absorption spectroscopy technique[J]. Acta Optica Sinica, 35, 0630003(2015).

[7] Campion R, Delgado-Granados H, Mori T. Image-based correction of the light dilution effect for SO2 camera measurements[J]. Journal of Volcanology and Geothermal Research, 300, 48-57(2015).

[8] Mori T, Burton M. The SO2 camera: a simple, fast and cheap method for ground-based imaging of SO2 in volcanic plumes[J]. Geophysical Research Letters, 33, L24804(2006).

[9] Nadeau P A, Palma J L, Waite G P. Linking volcanic tremor, degassing, and eruption dynamics via SO2 imaging[J]. Geophysical Research Letters, 38, L01304(2011).

[10] Pering T D, McGonigle A J S, James M R et al. Conduit dynamics and post explosion degassing on Stromboli: a combined UV camera and numerical modeling treatment[J]. Geophysical Research Letters, 43, 5009-5016(2016).

[11] Pering T D, Liu E J, Wood K et al. Combined ground and aerial measurements resolve vent-specific gas fluxes from a multi-vent volcano[J]. Nature Communications, 11, 3039(2020).

[12] Smekens J F, Burton M R, Clarke A B. Validation of the SO2 camera for high temporal and spatial resolution monitoring of SO2 emissions[J]. Journal of Volcanology and Geothermal Research, 300, 37-47(2015).

[13] Osorio M, Casaballe N, Belsterli G et al. Plume segmentation from UV camera images for SO2 emission rate quantification on cloud days[J]. Remote Sensing, 9, 517(2017).

[14] Cao K, Zhang Z D, Li Y et al. Ship fuel sulfur content prediction based on convolutional neural network and ultraviolet camera images[J]. Environmental Pollution, 273, 116501(2021).

[15] Varnam M, Burton M, Esse B et al. Two independent light dilution corrections for the SO2 camera retrieve comparable emission rates at Masaya Volcano, Nicaragua[J]. Remote Sensing, 13, 935(2021).

[16] Kern C, Deutschmann T, Werner C et al. Improving the accuracy of SO2 column densities and emission rates obtained from upward-looking UV-spectroscopic measurements of volcanic plumes by taking realistic radiative transfer into account[J]. Journal of Geophysical Research: Atmospheres, 117, D20302(2012).

[17] Wu K J, Feng Y T, Xiong Y H et al. Real-time continuous calibration method for UV camera[J]. Optics Letters, 45, 6851-6854(2020).

[18] Zhao Y R, Cao N W, Jia P C et al. Simultaneous observation of ozone and aerosol via ultraviolet multi-wavelength lidar[J]. Laser＆Optoelectronics Progress, 59, 1601001(2022).

[19] Kern C, Kick F, Lübcke P et al. Theoretical description of functionality, applications, and limitations of SO2 cameras for the remote sensing of volcanic plumes[J]. Atmospheric Measurement Techniques, 3, 733-749(2010).

[20] Lübcke P, Bobrowski N, Illing S et al. On the absolute calibration of SO2 cameras[J]. Atmospheric Measurement Techniques, 6, 677-696(2013).

[21] Bluth G J S, Shannon J M, Watson I M et al. Development of an ultra-violet digital camera for volcanic SO2 imaging[J]. Journal of Volcanology and Geothermal Research, 161, 47-56(2007).

[22] Kantzas E P, McGonigle A J S, Tamburello G et al. Protocols for UV camera volcanic SO2 measurements[J]. Journal of Volcanology and Geothermal Research, 194, 55-60(2010).