Assessment of Aerosol optical depth under background and polluted conditions using AERONET and VIIRS datasets

Mijin Kim; Seung Hee Kim; Woogyung Vincent Kim; Yun Gon Lee; Jhoon Kim; Menas C. Kafatos

doi:10.1016/j.atmosenv.2020.117994

Assessment of Aerosol optical depth under background and polluted conditions using AERONET and VIIRS datasets

Mijin Kim, Seung Hee Kim, Woogyung Vincent Kim, Yun Gon Lee, Jhoon Kim, Menas C. Kafatos

Department of Atmospheric Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

We investigated aerosol optical depth (AOD) under background and polluted conditions using Aerosol Robotic Network (AERONET) and Visible Infrared Imaging Radiometer Suite (VIIRS) observations. The AOD data were separated into background, high, and median AOD (BAOD, HAOD, and MAOD, respectively) based on the cumulative AOD distribution at each point and then their spatiotemporal variations were analyzed. Persistent pollutant emissions from industrial activity in South Asia (SUA) and Northeast Asia (NEA) produced the highest BAOD values. Gridded-BAODs obtained from VIIRS Deep Blue AOD products showed widespread high-level BAOD over the oceans associated with transport from dust and biomass burning events. The temporal variations in BAOD and HAOD were generally consistent with that of MAOD, but differences were found in seasonal variation as well as in long-term trends in some regions. Southeast Asia (SEA) and South America/South Africa (SAM/SAF) showed similar HAOD levels owing to biomass burning, but BAODs were higher in SEA than in SAM/SAF. In NEA, BAOD was lowest during the summer rainy season, as opposed to the peaks in MAOD and HAOD. Long-term trends of the AODs show clear regional characteristics. The AODs have decreasing trends in NEA, Europe/Mediterranean basin, and Northeast America but increasing trends in SUA, North Africa, and the Middle East. The trend of HAOD in Northwest America and Australia was opposite to that of BAOD. The spatiotemporal patterns of the HAOD and BAOD provide detailed information on changes in aerosol loading compared to using only MAOD.

Original language	English
Article number	117994
Journal	Atmospheric Environment
Volume	245
DOIs	https://doi.org/10.1016/j.atmosenv.2020.117994
Publication status	Published - 2021 Jan 15

Bibliographical note

Funding Information:
We thank the PI(s) and Co–I(s) and their staff for establishing and maintaining the AERONET sites used in this investigation. Mijin's work was initiated at Chapman University and completed during her NASA Postdoctoral Program (NPP). This paper is not funded or sponsored by NASA . This research was supported by the “Technology development for Practical Applications of Multi-Satellite data to maritime issues” funded by the Ministry of Ocean and Fisheries, Republic of Korea .

Funding Information:
We thank the PI(s) and Co–I(s) and their staff for establishing and maintaining the AERONET sites used in this investigation. Mijin's work was initiated at Chapman University and completed during her NASA Postdoctoral Program (NPP). This paper is not funded or sponsored by NASA. This research was supported by the “Technology development for Practical Applications of Multi-Satellite data to maritime issues” funded by the Ministry of Ocean and Fisheries, Republic of Korea.

Publisher Copyright:
© 2020 Elsevier Ltd

All Science Journal Classification (ASJC) codes

Environmental Science(all)
Atmospheric Science

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10.1016/j.atmosenv.2020.117994

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title = "Assessment of Aerosol optical depth under background and polluted conditions using AERONET and VIIRS datasets",

abstract = "We investigated aerosol optical depth (AOD) under background and polluted conditions using Aerosol Robotic Network (AERONET) and Visible Infrared Imaging Radiometer Suite (VIIRS) observations. The AOD data were separated into background, high, and median AOD (BAOD, HAOD, and MAOD, respectively) based on the cumulative AOD distribution at each point and then their spatiotemporal variations were analyzed. Persistent pollutant emissions from industrial activity in South Asia (SUA) and Northeast Asia (NEA) produced the highest BAOD values. Gridded-BAODs obtained from VIIRS Deep Blue AOD products showed widespread high-level BAOD over the oceans associated with transport from dust and biomass burning events. The temporal variations in BAOD and HAOD were generally consistent with that of MAOD, but differences were found in seasonal variation as well as in long-term trends in some regions. Southeast Asia (SEA) and South America/South Africa (SAM/SAF) showed similar HAOD levels owing to biomass burning, but BAODs were higher in SEA than in SAM/SAF. In NEA, BAOD was lowest during the summer rainy season, as opposed to the peaks in MAOD and HAOD. Long-term trends of the AODs show clear regional characteristics. The AODs have decreasing trends in NEA, Europe/Mediterranean basin, and Northeast America but increasing trends in SUA, North Africa, and the Middle East. The trend of HAOD in Northwest America and Australia was opposite to that of BAOD. The spatiotemporal patterns of the HAOD and BAOD provide detailed information on changes in aerosol loading compared to using only MAOD.",

author = "Mijin Kim and Kim, {Seung Hee} and Kim, {Woogyung Vincent} and Lee, {Yun Gon} and Jhoon Kim and Kafatos, {Menas C.}",

note = "Funding Information: We thank the PI(s) and Co–I(s) and their staff for establishing and maintaining the AERONET sites used in this investigation. Mijin's work was initiated at Chapman University and completed during her NASA Postdoctoral Program (NPP). This paper is not funded or sponsored by NASA . This research was supported by the “Technology development for Practical Applications of Multi-Satellite data to maritime issues” funded by the Ministry of Ocean and Fisheries, Republic of Korea . Funding Information: We thank the PI(s) and Co–I(s) and their staff for establishing and maintaining the AERONET sites used in this investigation. Mijin's work was initiated at Chapman University and completed during her NASA Postdoctoral Program (NPP). This paper is not funded or sponsored by NASA. This research was supported by the “Technology development for Practical Applications of Multi-Satellite data to maritime issues” funded by the Ministry of Ocean and Fisheries, Republic of Korea. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

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AU - Kim, Jhoon

AU - Kafatos, Menas C.

N1 - Funding Information: We thank the PI(s) and Co–I(s) and their staff for establishing and maintaining the AERONET sites used in this investigation. Mijin's work was initiated at Chapman University and completed during her NASA Postdoctoral Program (NPP). This paper is not funded or sponsored by NASA . This research was supported by the “Technology development for Practical Applications of Multi-Satellite data to maritime issues” funded by the Ministry of Ocean and Fisheries, Republic of Korea . Funding Information: We thank the PI(s) and Co–I(s) and their staff for establishing and maintaining the AERONET sites used in this investigation. Mijin's work was initiated at Chapman University and completed during her NASA Postdoctoral Program (NPP). This paper is not funded or sponsored by NASA. This research was supported by the “Technology development for Practical Applications of Multi-Satellite data to maritime issues” funded by the Ministry of Ocean and Fisheries, Republic of Korea. Publisher Copyright: © 2020 Elsevier Ltd

PY - 2021/1/15

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N2 - We investigated aerosol optical depth (AOD) under background and polluted conditions using Aerosol Robotic Network (AERONET) and Visible Infrared Imaging Radiometer Suite (VIIRS) observations. The AOD data were separated into background, high, and median AOD (BAOD, HAOD, and MAOD, respectively) based on the cumulative AOD distribution at each point and then their spatiotemporal variations were analyzed. Persistent pollutant emissions from industrial activity in South Asia (SUA) and Northeast Asia (NEA) produced the highest BAOD values. Gridded-BAODs obtained from VIIRS Deep Blue AOD products showed widespread high-level BAOD over the oceans associated with transport from dust and biomass burning events. The temporal variations in BAOD and HAOD were generally consistent with that of MAOD, but differences were found in seasonal variation as well as in long-term trends in some regions. Southeast Asia (SEA) and South America/South Africa (SAM/SAF) showed similar HAOD levels owing to biomass burning, but BAODs were higher in SEA than in SAM/SAF. In NEA, BAOD was lowest during the summer rainy season, as opposed to the peaks in MAOD and HAOD. Long-term trends of the AODs show clear regional characteristics. The AODs have decreasing trends in NEA, Europe/Mediterranean basin, and Northeast America but increasing trends in SUA, North Africa, and the Middle East. The trend of HAOD in Northwest America and Australia was opposite to that of BAOD. The spatiotemporal patterns of the HAOD and BAOD provide detailed information on changes in aerosol loading compared to using only MAOD.

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Assessment of Aerosol optical depth under background and polluted conditions using AERONET and VIIRS datasets

Abstract

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