Comparisons of spectral aerosol single scattering albedo in Seoul, South Korea

Jungbin Mok; Nickolay A. Krotkov; Omar Torres; Hiren Jethva; Zhanqing Li; Jhoon Kim; Ja Ho Koo; Sujung Go; Hitoshi Irie; Gordon Labow; Thomas F. Eck; Brent N. Holben; Jay Herman; Robert P. Loughman; Elena Spinei; Seoung Soo Lee; Pradeep Khatri; Monica Campanelli

doi:10.5194/amt-11-2295-2018

Comparisons of spectral aerosol single scattering albedo in Seoul, South Korea

Jungbin Mok, Nickolay A. Krotkov, Omar Torres, Hiren Jethva, Zhanqing Li, Jhoon Kim, Ja Ho Koo, Sujung Go, Hitoshi Irie, Gordon Labow, Thomas F. Eck, Brent N. Holben, Jay Herman, Robert P. Loughman, Elena Spinei, Seoung Soo Lee, Pradeep Khatri, Monica Campanelli

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Abstract

Quantifying aerosol absorption at ultraviolet (UV) wavelengths is important for monitoring air pollution and aerosol amounts using current (e.g., Aura/OMI) and future (e.g., TROPOMI, TEMPO, GEMS, and Sentinel-4) satellite measurements. Measurements of column average atmospheric aerosol single scattering albedo (SSA) are performed on the ground by the NASA AERONET in the visible (VIS) and near-infrared (NIR) wavelengths and in the UV-VIS-NIR by the SKYNET networks. Previous comparison studies have focused on VIS and NIR wavelengths due to the lack of co-incident measurements of aerosol and gaseous absorption properties in the UV. This study compares the SKYNET-retrieved SSA in the UV with the SSA derived from a combination of AERONET, MFRSR, and Pandora (AMP) retrievals in Seoul, South Korea, in spring and summer 2016. The results show that the spectrally invariant surface albedo assumed in the SKYNET SSA retrievals leads to underestimated SSA compared to AMP values at near UV wavelengths. Re-processed SKYNET inversions using spectrally varying surface albedo, consistent with the AERONET retrieval improve agreement with AMP SSA. The combined AMP inversions allow for separating aerosol and gaseous (NO2 and O3) absorption and provide aerosol retrievals from the shortest UVB (305 nm) through VIS to NIR wavelengths (870 nm).

Original language	English
Pages (from-to)	2295-2311
Number of pages	17
Journal	Atmospheric Measurement Techniques
Volume	11
Issue number	4
DOIs	https://doi.org/10.5194/amt-11-2295-2018
Publication status	Published - 2018 Apr 23

Bibliographical note

Funding Information:
Acknowledgements. Jungbin Mok was supported by the University of Maryland/ESSIC–NASA cooperative agreement and a NASA grant (NNX16AN61G). Jhoon Kim, Ja-Ho Koo, and Sujung Go were supported by the Korea Ministry of Environment (MOE) under the grant: “Public Technology Program based on Environmental Policy (2017000160001)”. The authors acknowledge support from NASA Earth Science Division, Radiation Sciences and Atmospheric Composition programs and the AERONET project at GSFC. The authors also thank the AERONET team, Charles M. Wilson from the NOAA Central UV Calibration Facility (CUCF), plus George Janson, and Becky Olson from the USDA UV-B monitoring and Research Program (UVMRP).

Publisher Copyright:
© Author(s) 2018.

All Science Journal Classification (ASJC) codes

Atmospheric Science

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10.5194/amt-11-2295-2018

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Mok, J., Krotkov, N. A., Torres, O., Jethva, H., Li, Z., Kim, J., Koo, J. H., Go, S., Irie, H., Labow, G., Eck, T. F., Holben, B. N., Herman, J., Loughman, R. P., Spinei, E., Soo Lee, S., Khatri, P., & Campanelli, M. (2018). Comparisons of spectral aerosol single scattering albedo in Seoul, South Korea. Atmospheric Measurement Techniques, 11(4), 2295-2311. https://doi.org/10.5194/amt-11-2295-2018

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title = "Comparisons of spectral aerosol single scattering albedo in Seoul, South Korea",

abstract = "Quantifying aerosol absorption at ultraviolet (UV) wavelengths is important for monitoring air pollution and aerosol amounts using current (e.g., Aura/OMI) and future (e.g., TROPOMI, TEMPO, GEMS, and Sentinel-4) satellite measurements. Measurements of column average atmospheric aerosol single scattering albedo (SSA) are performed on the ground by the NASA AERONET in the visible (VIS) and near-infrared (NIR) wavelengths and in the UV-VIS-NIR by the SKYNET networks. Previous comparison studies have focused on VIS and NIR wavelengths due to the lack of co-incident measurements of aerosol and gaseous absorption properties in the UV. This study compares the SKYNET-retrieved SSA in the UV with the SSA derived from a combination of AERONET, MFRSR, and Pandora (AMP) retrievals in Seoul, South Korea, in spring and summer 2016. The results show that the spectrally invariant surface albedo assumed in the SKYNET SSA retrievals leads to underestimated SSA compared to AMP values at near UV wavelengths. Re-processed SKYNET inversions using spectrally varying surface albedo, consistent with the AERONET retrieval improve agreement with AMP SSA. The combined AMP inversions allow for separating aerosol and gaseous (NO2 and O3) absorption and provide aerosol retrievals from the shortest UVB (305 nm) through VIS to NIR wavelengths (870 nm).",

author = "Jungbin Mok and Krotkov, {Nickolay A.} and Omar Torres and Hiren Jethva and Zhanqing Li and Jhoon Kim and Koo, {Ja Ho} and Sujung Go and Hitoshi Irie and Gordon Labow and Eck, {Thomas F.} and Holben, {Brent N.} and Jay Herman and Loughman, {Robert P.} and Elena Spinei and {Soo Lee}, Seoung and Pradeep Khatri and Monica Campanelli",

note = "Funding Information: Acknowledgements. Jungbin Mok was supported by the University of Maryland/ESSIC–NASA cooperative agreement and a NASA grant (NNX16AN61G). Jhoon Kim, Ja-Ho Koo, and Sujung Go were supported by the Korea Ministry of Environment (MOE) under the grant: “Public Technology Program based on Environmental Policy (2017000160001)”. The authors acknowledge support from NASA Earth Science Division, Radiation Sciences and Atmospheric Composition programs and the AERONET project at GSFC. The authors also thank the AERONET team, Charles M. Wilson from the NOAA Central UV Calibration Facility (CUCF), plus George Janson, and Becky Olson from the USDA UV-B monitoring and Research Program (UVMRP). Publisher Copyright: {\textcopyright} Author(s) 2018.",

year = "2018",

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doi = "10.5194/amt-11-2295-2018",

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Mok, J, Krotkov, NA, Torres, O, Jethva, H, Li, Z, Kim, J , Koo, JH, Go, S, Irie, H, Labow, G, Eck, TF, Holben, BN, Herman, J, Loughman, RP, Spinei, E, Soo Lee, S, Khatri, P & Campanelli, M 2018, 'Comparisons of spectral aerosol single scattering albedo in Seoul, South Korea', Atmospheric Measurement Techniques, vol. 11, no. 4, pp. 2295-2311. https://doi.org/10.5194/amt-11-2295-2018

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T1 - Comparisons of spectral aerosol single scattering albedo in Seoul, South Korea

AU - Mok, Jungbin

AU - Krotkov, Nickolay A.

AU - Torres, Omar

AU - Jethva, Hiren

AU - Li, Zhanqing

AU - Kim, Jhoon

AU - Koo, Ja Ho

AU - Go, Sujung

AU - Irie, Hitoshi

AU - Labow, Gordon

AU - Eck, Thomas F.

AU - Holben, Brent N.

AU - Herman, Jay

AU - Loughman, Robert P.

AU - Spinei, Elena

AU - Soo Lee, Seoung

AU - Khatri, Pradeep

AU - Campanelli, Monica

N1 - Funding Information: Acknowledgements. Jungbin Mok was supported by the University of Maryland/ESSIC–NASA cooperative agreement and a NASA grant (NNX16AN61G). Jhoon Kim, Ja-Ho Koo, and Sujung Go were supported by the Korea Ministry of Environment (MOE) under the grant: “Public Technology Program based on Environmental Policy (2017000160001)”. The authors acknowledge support from NASA Earth Science Division, Radiation Sciences and Atmospheric Composition programs and the AERONET project at GSFC. The authors also thank the AERONET team, Charles M. Wilson from the NOAA Central UV Calibration Facility (CUCF), plus George Janson, and Becky Olson from the USDA UV-B monitoring and Research Program (UVMRP). Publisher Copyright: © Author(s) 2018.

PY - 2018/4/23

Y1 - 2018/4/23

N2 - Quantifying aerosol absorption at ultraviolet (UV) wavelengths is important for monitoring air pollution and aerosol amounts using current (e.g., Aura/OMI) and future (e.g., TROPOMI, TEMPO, GEMS, and Sentinel-4) satellite measurements. Measurements of column average atmospheric aerosol single scattering albedo (SSA) are performed on the ground by the NASA AERONET in the visible (VIS) and near-infrared (NIR) wavelengths and in the UV-VIS-NIR by the SKYNET networks. Previous comparison studies have focused on VIS and NIR wavelengths due to the lack of co-incident measurements of aerosol and gaseous absorption properties in the UV. This study compares the SKYNET-retrieved SSA in the UV with the SSA derived from a combination of AERONET, MFRSR, and Pandora (AMP) retrievals in Seoul, South Korea, in spring and summer 2016. The results show that the spectrally invariant surface albedo assumed in the SKYNET SSA retrievals leads to underestimated SSA compared to AMP values at near UV wavelengths. Re-processed SKYNET inversions using spectrally varying surface albedo, consistent with the AERONET retrieval improve agreement with AMP SSA. The combined AMP inversions allow for separating aerosol and gaseous (NO2 and O3) absorption and provide aerosol retrievals from the shortest UVB (305 nm) through VIS to NIR wavelengths (870 nm).

AB - Quantifying aerosol absorption at ultraviolet (UV) wavelengths is important for monitoring air pollution and aerosol amounts using current (e.g., Aura/OMI) and future (e.g., TROPOMI, TEMPO, GEMS, and Sentinel-4) satellite measurements. Measurements of column average atmospheric aerosol single scattering albedo (SSA) are performed on the ground by the NASA AERONET in the visible (VIS) and near-infrared (NIR) wavelengths and in the UV-VIS-NIR by the SKYNET networks. Previous comparison studies have focused on VIS and NIR wavelengths due to the lack of co-incident measurements of aerosol and gaseous absorption properties in the UV. This study compares the SKYNET-retrieved SSA in the UV with the SSA derived from a combination of AERONET, MFRSR, and Pandora (AMP) retrievals in Seoul, South Korea, in spring and summer 2016. The results show that the spectrally invariant surface albedo assumed in the SKYNET SSA retrievals leads to underestimated SSA compared to AMP values at near UV wavelengths. Re-processed SKYNET inversions using spectrally varying surface albedo, consistent with the AERONET retrieval improve agreement with AMP SSA. The combined AMP inversions allow for separating aerosol and gaseous (NO2 and O3) absorption and provide aerosol retrievals from the shortest UVB (305 nm) through VIS to NIR wavelengths (870 nm).

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Comparisons of spectral aerosol single scattering albedo in Seoul, South Korea

Abstract

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