Multidecadal trend analysis of in situ aerosol radiative properties around the world
In order to assess the evolution of aerosol parameters affecting climate change, a long-term trend analysis of aerosol optical properties was performed on time series from 52 stations situated across five continents. The time series of measured scattering, backscattering and absorption coefficients...
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Format: | Article in Journal/Newspaper |
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Katlenburg-Lindau : EGU
2020
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Online Access: | https://dx.doi.org/10.34657/5939 https://oa.tib.eu/renate/handle/123456789/6892 |
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topic |
absorption aerosol backscatter climate change comparative study decadal variation global perspective in situ measurement least squares method optical property radiative forcing trend analysis Asia Australia Europe North America 550 |
spellingShingle |
absorption aerosol backscatter climate change comparative study decadal variation global perspective in situ measurement least squares method optical property radiative forcing trend analysis Asia Australia Europe North America 550 Collaud Coen, Martine Andrews, Elisabeth Alastuey, Andrés Petkov Arsov, Todor Backman, John Brem, Benjamin T. Bukowiecki, Nicolas Couret, Cédric Eleftheriadis, Konstantinos Flentje, Harald Fiebig, Markus Gysel-Beer, Martin Hand, Jenny L. Hoffer, András Hooda, Rakesh Hueglin, Christoph Joubert, Warren Keywood, Melita Eun Kim, Jeong Kim, Sang-Woo Labuschagne, Casper Lin, Neng-Huei Lin, Yong Lund Myhre, Cathrine Luoma, Krista Lyamani, Hassan Marinoni, Angela Mayol-Bracero, Olga L. Mihalopoulos, Nikos Pandolfi, Marco Prats, Natalia Prenni, Anthony J. Putaud, Jean-Philippe Ries, Ludwig Reisen, Fabienne Sellegri, Karine Sharma, Sangeeta Sheridan, Patrick Sherman, James Patrick Sun, Junying Titos, Gloria Torres, Elvis Tuch, Thomas Weller, Rolf Wiedensohler, Alfred Zieger, Paul Laj, Paolo Multidecadal trend analysis of in situ aerosol radiative properties around the world |
topic_facet |
absorption aerosol backscatter climate change comparative study decadal variation global perspective in situ measurement least squares method optical property radiative forcing trend analysis Asia Australia Europe North America 550 |
description |
In order to assess the evolution of aerosol parameters affecting climate change, a long-term trend analysis of aerosol optical properties was performed on time series from 52 stations situated across five continents. The time series of measured scattering, backscattering and absorption coefficients as well as the derived single scattering albedo, backscattering fraction, scattering and absorption Ångström exponents covered at least 10 years and up to 40 years for some stations. The non-parametric seasonal Mann-Kendall (MK) statistical test associated with several pre-whitening methods and with Sen's slope was used as the main trend analysis method. Comparisons with general least mean square associated with autoregressive bootstrap (GLS/ARB) and with standard least mean square analysis (LMS) enabled confirmation of the detected MK statistically significant trends and the assessment of advantages and limitations of each method. Currently, scattering and backscattering coefficient trends are mostly decreasing in Europe and North America and are not statistically significant in Asia, while polar stations exhibit a mix of increasing and decreasing trends. A few increasing trends are also found at some stations in North America and Australia. Absorption coefficient time series also exhibit primarily decreasing trends. For single scattering albedo, 52 % of the sites exhibit statistically significant positive trends, mostly in Asia, eastern/northern Europe and the Arctic, 22 % of sites exhibit statistically significant negative trends, mostly in central Europe and central North America, while the remaining 26 % of sites have trends which are not statistically significant. In addition to evaluating trends for the overall time series, the evolution of the trends in sequential 10-year segments was also analyzed. For scattering and backscattering, statistically significant increasing 10-year trends are primarily found for earlier periods (10-year trends ending in 2010-2015) for polar stations and Mauna Loa. For most of the stations, the present-day statistically significant decreasing 10-year trends of the single scattering albedo were preceded by not statistically significant and statistically significant increasing 10-year trends. The effect of air pollution abatement policies in continental North America is very obvious in the 10-year trends of the scattering coefficient - there is a shift to statistically significant negative trends in 2009-2012 for all stations in the eastern and central USA. This long-term trend analysis of aerosol radiative properties with a broad spatial coverage provides insight into potential aerosol effects on climate changes. © 2020 Royal Society of Chemistry. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Collaud Coen, Martine Andrews, Elisabeth Alastuey, Andrés Petkov Arsov, Todor Backman, John Brem, Benjamin T. Bukowiecki, Nicolas Couret, Cédric Eleftheriadis, Konstantinos Flentje, Harald Fiebig, Markus Gysel-Beer, Martin Hand, Jenny L. Hoffer, András Hooda, Rakesh Hueglin, Christoph Joubert, Warren Keywood, Melita Eun Kim, Jeong Kim, Sang-Woo Labuschagne, Casper Lin, Neng-Huei Lin, Yong Lund Myhre, Cathrine Luoma, Krista Lyamani, Hassan Marinoni, Angela Mayol-Bracero, Olga L. Mihalopoulos, Nikos Pandolfi, Marco Prats, Natalia Prenni, Anthony J. Putaud, Jean-Philippe Ries, Ludwig Reisen, Fabienne Sellegri, Karine Sharma, Sangeeta Sheridan, Patrick Sherman, James Patrick Sun, Junying Titos, Gloria Torres, Elvis Tuch, Thomas Weller, Rolf Wiedensohler, Alfred Zieger, Paul Laj, Paolo |
author_facet |
Collaud Coen, Martine Andrews, Elisabeth Alastuey, Andrés Petkov Arsov, Todor Backman, John Brem, Benjamin T. Bukowiecki, Nicolas Couret, Cédric Eleftheriadis, Konstantinos Flentje, Harald Fiebig, Markus Gysel-Beer, Martin Hand, Jenny L. Hoffer, András Hooda, Rakesh Hueglin, Christoph Joubert, Warren Keywood, Melita Eun Kim, Jeong Kim, Sang-Woo Labuschagne, Casper Lin, Neng-Huei Lin, Yong Lund Myhre, Cathrine Luoma, Krista Lyamani, Hassan Marinoni, Angela Mayol-Bracero, Olga L. Mihalopoulos, Nikos Pandolfi, Marco Prats, Natalia Prenni, Anthony J. Putaud, Jean-Philippe Ries, Ludwig Reisen, Fabienne Sellegri, Karine Sharma, Sangeeta Sheridan, Patrick Sherman, James Patrick Sun, Junying Titos, Gloria Torres, Elvis Tuch, Thomas Weller, Rolf Wiedensohler, Alfred Zieger, Paul Laj, Paolo |
author_sort |
Collaud Coen, Martine |
title |
Multidecadal trend analysis of in situ aerosol radiative properties around the world |
title_short |
Multidecadal trend analysis of in situ aerosol radiative properties around the world |
title_full |
Multidecadal trend analysis of in situ aerosol radiative properties around the world |
title_fullStr |
Multidecadal trend analysis of in situ aerosol radiative properties around the world |
title_full_unstemmed |
Multidecadal trend analysis of in situ aerosol radiative properties around the world |
title_sort |
multidecadal trend analysis of in situ aerosol radiative properties around the world |
publisher |
Katlenburg-Lindau : EGU |
publishDate |
2020 |
url |
https://dx.doi.org/10.34657/5939 https://oa.tib.eu/renate/handle/123456789/6892 |
long_lat |
ENVELOPE(-59.828,-59.828,-63.497,-63.497) |
geographic |
Arctic Kendall |
geographic_facet |
Arctic Kendall |
genre |
albedo Arctic Climate change |
genre_facet |
albedo Arctic Climate change |
op_rights |
Creative Commons Attribution 4.0 International CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.34657/5939 |
_version_ |
1766249089322713088 |
spelling |
ftdatacite:10.34657/5939 2023-05-15T13:11:49+02:00 Multidecadal trend analysis of in situ aerosol radiative properties around the world Collaud Coen, Martine Andrews, Elisabeth Alastuey, Andrés Petkov Arsov, Todor Backman, John Brem, Benjamin T. Bukowiecki, Nicolas Couret, Cédric Eleftheriadis, Konstantinos Flentje, Harald Fiebig, Markus Gysel-Beer, Martin Hand, Jenny L. Hoffer, András Hooda, Rakesh Hueglin, Christoph Joubert, Warren Keywood, Melita Eun Kim, Jeong Kim, Sang-Woo Labuschagne, Casper Lin, Neng-Huei Lin, Yong Lund Myhre, Cathrine Luoma, Krista Lyamani, Hassan Marinoni, Angela Mayol-Bracero, Olga L. Mihalopoulos, Nikos Pandolfi, Marco Prats, Natalia Prenni, Anthony J. Putaud, Jean-Philippe Ries, Ludwig Reisen, Fabienne Sellegri, Karine Sharma, Sangeeta Sheridan, Patrick Sherman, James Patrick Sun, Junying Titos, Gloria Torres, Elvis Tuch, Thomas Weller, Rolf Wiedensohler, Alfred Zieger, Paul Laj, Paolo 2020 https://dx.doi.org/10.34657/5939 https://oa.tib.eu/renate/handle/123456789/6892 unknown Katlenburg-Lindau : EGU Creative Commons Attribution 4.0 International CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY absorption aerosol backscatter climate change comparative study decadal variation global perspective in situ measurement least squares method optical property radiative forcing trend analysis Asia Australia Europe North America 550 CreativeWork article 2020 ftdatacite https://doi.org/10.34657/5939 2022-03-10T12:44:35Z In order to assess the evolution of aerosol parameters affecting climate change, a long-term trend analysis of aerosol optical properties was performed on time series from 52 stations situated across five continents. The time series of measured scattering, backscattering and absorption coefficients as well as the derived single scattering albedo, backscattering fraction, scattering and absorption Ångström exponents covered at least 10 years and up to 40 years for some stations. The non-parametric seasonal Mann-Kendall (MK) statistical test associated with several pre-whitening methods and with Sen's slope was used as the main trend analysis method. Comparisons with general least mean square associated with autoregressive bootstrap (GLS/ARB) and with standard least mean square analysis (LMS) enabled confirmation of the detected MK statistically significant trends and the assessment of advantages and limitations of each method. Currently, scattering and backscattering coefficient trends are mostly decreasing in Europe and North America and are not statistically significant in Asia, while polar stations exhibit a mix of increasing and decreasing trends. A few increasing trends are also found at some stations in North America and Australia. Absorption coefficient time series also exhibit primarily decreasing trends. For single scattering albedo, 52 % of the sites exhibit statistically significant positive trends, mostly in Asia, eastern/northern Europe and the Arctic, 22 % of sites exhibit statistically significant negative trends, mostly in central Europe and central North America, while the remaining 26 % of sites have trends which are not statistically significant. In addition to evaluating trends for the overall time series, the evolution of the trends in sequential 10-year segments was also analyzed. For scattering and backscattering, statistically significant increasing 10-year trends are primarily found for earlier periods (10-year trends ending in 2010-2015) for polar stations and Mauna Loa. For most of the stations, the present-day statistically significant decreasing 10-year trends of the single scattering albedo were preceded by not statistically significant and statistically significant increasing 10-year trends. The effect of air pollution abatement policies in continental North America is very obvious in the 10-year trends of the scattering coefficient - there is a shift to statistically significant negative trends in 2009-2012 for all stations in the eastern and central USA. This long-term trend analysis of aerosol radiative properties with a broad spatial coverage provides insight into potential aerosol effects on climate changes. © 2020 Royal Society of Chemistry. All rights reserved. Article in Journal/Newspaper albedo Arctic Climate change DataCite Metadata Store (German National Library of Science and Technology) Arctic Kendall ENVELOPE(-59.828,-59.828,-63.497,-63.497) |