Retrieval of Black Carbon Absorption Aerosol Optical Depth from AERONET Observations over the World during 2000–2018
Black carbon (BC) absorption aerosol optical depth (AAODBC) defines the contribution of BC in light absorption and is retrievable using sun/sky radiometer measurements provided by Aerosol Robotic Network (AERONET) inversion products. In this study, we utilized AERONET-retrieved depolarization ratio...
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ftmdpi:oai:mdpi.com:/2072-4292/14/6/1510/ 2023-08-20T03:59:12+02:00 Retrieval of Black Carbon Absorption Aerosol Optical Depth from AERONET Observations over the World during 2000–2018 Naghmeh Dehkhoda Juhyeon Sim Sohee Joo Sungkyun Shin Youngmin Noh 2022-03-21 application/pdf https://doi.org/10.3390/rs14061510 EN eng Multidisciplinary Digital Publishing Institute Atmosphere Remote Sensing https://dx.doi.org/10.3390/rs14061510 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 14; Issue 6; Pages: 1510 aerosol optical depth (AOD) absorption aerosol optical depth (AAOD) black carbon (BC) Ångström Exponent (AE å) single scattering albedo (SSA ω) depolarization ratio (DPR δ p ) Text 2022 ftmdpi https://doi.org/10.3390/rs14061510 2023-08-01T04:31:09Z Black carbon (BC) absorption aerosol optical depth (AAODBC) defines the contribution of BC in light absorption and is retrievable using sun/sky radiometer measurements provided by Aerosol Robotic Network (AERONET) inversion products. In this study, we utilized AERONET-retrieved depolarization ratio (DPR, δp), single scattering albedo (SSA, ω), and Ångström Exponent (AE, å) of version 3 level 2.0 products as indicators to estimate the contribution of BC to the absorbing fractions of AOD. We applied our methodology to the AERONET sites, including North and South America, Europe, East Asia, Africa, India, and the Middle East, during 2000–2018. The long-term AAODBC showed a downward tendency over Sao Paulo (−0.001 year−1), Thessaloniki (−0.0004 year−1), Beijing (−0.001 year−1), Seoul (−0.0015 year−1), and Cape Verde (−0.0009 year−1) with the highest values over the populous sites. This declining tendency in AAODBC can be attributable to the successful emission control policies over these sites, particularly in Europe, America, and China. The AAODBC at the Beijing, Sao Paulo, Mexico City, and the Indian sites showed a clear seasonality indicating the notable role of residential heating in BC emissions over these sites during winter. We found a higher correlation between AAODBC and fine mode AOD at 440 nm at all sites except for Beijing. High pollution episodes, BC emission from different sources, and aggregation properties seem to be the main drivers of higher AAODBC correlation with coarse particles over Beijing. Text Aerosol Robotic Network MDPI Open Access Publishing Indian Remote Sensing 14 6 1510 |
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Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
aerosol optical depth (AOD) absorption aerosol optical depth (AAOD) black carbon (BC) Ångström Exponent (AE å) single scattering albedo (SSA ω) depolarization ratio (DPR δ p ) |
spellingShingle |
aerosol optical depth (AOD) absorption aerosol optical depth (AAOD) black carbon (BC) Ångström Exponent (AE å) single scattering albedo (SSA ω) depolarization ratio (DPR δ p ) Naghmeh Dehkhoda Juhyeon Sim Sohee Joo Sungkyun Shin Youngmin Noh Retrieval of Black Carbon Absorption Aerosol Optical Depth from AERONET Observations over the World during 2000–2018 |
topic_facet |
aerosol optical depth (AOD) absorption aerosol optical depth (AAOD) black carbon (BC) Ångström Exponent (AE å) single scattering albedo (SSA ω) depolarization ratio (DPR δ p ) |
description |
Black carbon (BC) absorption aerosol optical depth (AAODBC) defines the contribution of BC in light absorption and is retrievable using sun/sky radiometer measurements provided by Aerosol Robotic Network (AERONET) inversion products. In this study, we utilized AERONET-retrieved depolarization ratio (DPR, δp), single scattering albedo (SSA, ω), and Ångström Exponent (AE, å) of version 3 level 2.0 products as indicators to estimate the contribution of BC to the absorbing fractions of AOD. We applied our methodology to the AERONET sites, including North and South America, Europe, East Asia, Africa, India, and the Middle East, during 2000–2018. The long-term AAODBC showed a downward tendency over Sao Paulo (−0.001 year−1), Thessaloniki (−0.0004 year−1), Beijing (−0.001 year−1), Seoul (−0.0015 year−1), and Cape Verde (−0.0009 year−1) with the highest values over the populous sites. This declining tendency in AAODBC can be attributable to the successful emission control policies over these sites, particularly in Europe, America, and China. The AAODBC at the Beijing, Sao Paulo, Mexico City, and the Indian sites showed a clear seasonality indicating the notable role of residential heating in BC emissions over these sites during winter. We found a higher correlation between AAODBC and fine mode AOD at 440 nm at all sites except for Beijing. High pollution episodes, BC emission from different sources, and aggregation properties seem to be the main drivers of higher AAODBC correlation with coarse particles over Beijing. |
format |
Text |
author |
Naghmeh Dehkhoda Juhyeon Sim Sohee Joo Sungkyun Shin Youngmin Noh |
author_facet |
Naghmeh Dehkhoda Juhyeon Sim Sohee Joo Sungkyun Shin Youngmin Noh |
author_sort |
Naghmeh Dehkhoda |
title |
Retrieval of Black Carbon Absorption Aerosol Optical Depth from AERONET Observations over the World during 2000–2018 |
title_short |
Retrieval of Black Carbon Absorption Aerosol Optical Depth from AERONET Observations over the World during 2000–2018 |
title_full |
Retrieval of Black Carbon Absorption Aerosol Optical Depth from AERONET Observations over the World during 2000–2018 |
title_fullStr |
Retrieval of Black Carbon Absorption Aerosol Optical Depth from AERONET Observations over the World during 2000–2018 |
title_full_unstemmed |
Retrieval of Black Carbon Absorption Aerosol Optical Depth from AERONET Observations over the World during 2000–2018 |
title_sort |
retrieval of black carbon absorption aerosol optical depth from aeronet observations over the world during 2000–2018 |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/rs14061510 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
Remote Sensing; Volume 14; Issue 6; Pages: 1510 |
op_relation |
Atmosphere Remote Sensing https://dx.doi.org/10.3390/rs14061510 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs14061510 |
container_title |
Remote Sensing |
container_volume |
14 |
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6 |
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1510 |
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