Retrieval of Black Carbon Absorption Aerosol Optical Depth from AERONET Observations over the World during 2000–2018
Black carbon (BC) absorption aerosol optical depth (AAOD BC ) 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 rati...
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ftdoajarticles:oai:doaj.org/article:ec6bebfc897142ccaf59727bebc1b0de 2023-05-15T13:06:56+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 2022-03-01T00:00:00Z https://doi.org/10.3390/rs14061510 https://doaj.org/article/ec6bebfc897142ccaf59727bebc1b0de EN eng MDPI AG https://www.mdpi.com/2072-4292/14/6/1510 https://doaj.org/toc/2072-4292 doi:10.3390/rs14061510 2072-4292 https://doaj.org/article/ec6bebfc897142ccaf59727bebc1b0de Remote Sensing, Vol 14, Iss 1510, p 1510 (2022) 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 ) Science Q article 2022 ftdoajarticles https://doi.org/10.3390/rs14061510 2022-12-31T13:38:36Z Black carbon (BC) absorption aerosol optical depth (AAOD BC ) 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, <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi mathvariant="sans-serif">δ</mi><mi mathvariant="normal">p</mi></msup></mrow></semantics></math> ), 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 AAOD BC 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 AAOD BC can be attributable to the successful emission control policies over these sites, particularly in Europe, America, and China. The AAOD BC 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 AAOD BC 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 AAOD BC correlation with coarse particles over Beijing. Article in Journal/Newspaper Aerosol Robotic Network Directory of Open Access Journals: DOAJ Articles Indian Remote Sensing 14 6 1510 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
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 ) Science Q |
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 ) Science Q 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 ) Science Q |
description |
Black carbon (BC) absorption aerosol optical depth (AAOD BC ) 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, <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi mathvariant="sans-serif">δ</mi><mi mathvariant="normal">p</mi></msup></mrow></semantics></math> ), 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 AAOD BC 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 AAOD BC can be attributable to the successful emission control policies over these sites, particularly in Europe, America, and China. The AAOD BC 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 AAOD BC 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 AAOD BC correlation with coarse particles over Beijing. |
format |
Article in Journal/Newspaper |
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 |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/rs14061510 https://doaj.org/article/ec6bebfc897142ccaf59727bebc1b0de |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
Remote Sensing, Vol 14, Iss 1510, p 1510 (2022) |
op_relation |
https://www.mdpi.com/2072-4292/14/6/1510 https://doaj.org/toc/2072-4292 doi:10.3390/rs14061510 2072-4292 https://doaj.org/article/ec6bebfc897142ccaf59727bebc1b0de |
op_doi |
https://doi.org/10.3390/rs14061510 |
container_title |
Remote Sensing |
container_volume |
14 |
container_issue |
6 |
container_start_page |
1510 |
_version_ |
1766027698205884416 |