Aerosol single-scattering albedo over the global oceans: Comparing PARASOL retrievals with AERONET, OMI, and AeroCom models estimates
The aerosol single-scattering albedo (SSA) over the global ocean is evaluated based on polarimetric measurements by the PARASOL (Polarization and Anisotropy of Reflectances for Atmospheric Sciences coupled with Observations from a Lidar) satellite. For the first time, global ocean SSA and Absorption...
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ftpubman:oai:pure.mpg.de:item_2222252 2023-08-20T03:59:11+02:00 Aerosol single-scattering albedo over the global oceans: Comparing PARASOL retrievals with AERONET, OMI, and AeroCom models estimates Lacagnina, C. Hasekamp, O. Bian, H. Curci, G. Myhre, G. van Noije, T. Schulz, M. Skeie, R. Takemura, T. Zhang, K. 2015-09-27 application/pdf http://hdl.handle.net/11858/00-001M-0000-0028-9C4E-C http://hdl.handle.net/11858/00-001M-0000-002A-6BA8-5 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1002/2015JD023501 http://hdl.handle.net/11858/00-001M-0000-0028-9C4E-C http://hdl.handle.net/11858/00-001M-0000-002A-6BA8-5 info:eu-repo/semantics/openAccess Journal of Geophysical Research: Atmospheres info:eu-repo/semantics/article 2015 ftpubman https://doi.org/10.1002/2015JD023501 2023-08-01T23:00:27Z The aerosol single-scattering albedo (SSA) over the global ocean is evaluated based on polarimetric measurements by the PARASOL (Polarization and Anisotropy of Reflectances for Atmospheric Sciences coupled with Observations from a Lidar) satellite. For the first time, global ocean SSA and Absorption Aerosol Optical Depth (AAOD) from this instrument are shown and evaluated against other observations (the Aerosol Robotic Network, AERONET, and the Ozone Monitoring Instrument, OMI). The observational data sets compare reasonably well, with the majority of the colocated points within 0.05 of the AERONET measurements. PARASOL shows that SSA is characterized by high spatial and seasonal variability, also over the open ocean far from the inland emission regions. The near global coverage in the visible spectral range provided by the PARASOL retrievals represents a unique opportunity to evaluate aerosol optical properties simulated by global aerosol models, as performed in the Aerosol Comparisons between Observations and Models (AeroCom) framework. The SSA (AAOD) estimated by the AeroCom models is generally higher (smaller) than the SSA (AAOD) retrieved from PARASOL. On the other hand, the mean simulated aerosol optical depth is consistent or slightly underestimated compared with observations. An overestimate of the aerosol scattering, compared to absorption, by the models would suggest that these simulate an overly strong aerosol radiative cooling at top of atmosphere, over most of the ocean surfaces. This implies that aerosols have a potentially stronger direct and semidirect impact within the atmosphere than currently simulated. © 2015. American Geophysical Union. All Rights Reserved. Article in Journal/Newspaper Aerosol Robotic Network Max Planck Society: MPG.PuRe Journal of Geophysical Research: Atmospheres 120 18 9814 9836 |
institution |
Open Polar |
collection |
Max Planck Society: MPG.PuRe |
op_collection_id |
ftpubman |
language |
English |
description |
The aerosol single-scattering albedo (SSA) over the global ocean is evaluated based on polarimetric measurements by the PARASOL (Polarization and Anisotropy of Reflectances for Atmospheric Sciences coupled with Observations from a Lidar) satellite. For the first time, global ocean SSA and Absorption Aerosol Optical Depth (AAOD) from this instrument are shown and evaluated against other observations (the Aerosol Robotic Network, AERONET, and the Ozone Monitoring Instrument, OMI). The observational data sets compare reasonably well, with the majority of the colocated points within 0.05 of the AERONET measurements. PARASOL shows that SSA is characterized by high spatial and seasonal variability, also over the open ocean far from the inland emission regions. The near global coverage in the visible spectral range provided by the PARASOL retrievals represents a unique opportunity to evaluate aerosol optical properties simulated by global aerosol models, as performed in the Aerosol Comparisons between Observations and Models (AeroCom) framework. The SSA (AAOD) estimated by the AeroCom models is generally higher (smaller) than the SSA (AAOD) retrieved from PARASOL. On the other hand, the mean simulated aerosol optical depth is consistent or slightly underestimated compared with observations. An overestimate of the aerosol scattering, compared to absorption, by the models would suggest that these simulate an overly strong aerosol radiative cooling at top of atmosphere, over most of the ocean surfaces. This implies that aerosols have a potentially stronger direct and semidirect impact within the atmosphere than currently simulated. © 2015. American Geophysical Union. All Rights Reserved. |
format |
Article in Journal/Newspaper |
author |
Lacagnina, C. Hasekamp, O. Bian, H. Curci, G. Myhre, G. van Noije, T. Schulz, M. Skeie, R. Takemura, T. Zhang, K. |
spellingShingle |
Lacagnina, C. Hasekamp, O. Bian, H. Curci, G. Myhre, G. van Noije, T. Schulz, M. Skeie, R. Takemura, T. Zhang, K. Aerosol single-scattering albedo over the global oceans: Comparing PARASOL retrievals with AERONET, OMI, and AeroCom models estimates |
author_facet |
Lacagnina, C. Hasekamp, O. Bian, H. Curci, G. Myhre, G. van Noije, T. Schulz, M. Skeie, R. Takemura, T. Zhang, K. |
author_sort |
Lacagnina, C. |
title |
Aerosol single-scattering albedo over the global oceans: Comparing PARASOL retrievals with AERONET, OMI, and AeroCom models estimates |
title_short |
Aerosol single-scattering albedo over the global oceans: Comparing PARASOL retrievals with AERONET, OMI, and AeroCom models estimates |
title_full |
Aerosol single-scattering albedo over the global oceans: Comparing PARASOL retrievals with AERONET, OMI, and AeroCom models estimates |
title_fullStr |
Aerosol single-scattering albedo over the global oceans: Comparing PARASOL retrievals with AERONET, OMI, and AeroCom models estimates |
title_full_unstemmed |
Aerosol single-scattering albedo over the global oceans: Comparing PARASOL retrievals with AERONET, OMI, and AeroCom models estimates |
title_sort |
aerosol single-scattering albedo over the global oceans: comparing parasol retrievals with aeronet, omi, and aerocom models estimates |
publishDate |
2015 |
url |
http://hdl.handle.net/11858/00-001M-0000-0028-9C4E-C http://hdl.handle.net/11858/00-001M-0000-002A-6BA8-5 |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
Journal of Geophysical Research: Atmospheres |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2015JD023501 http://hdl.handle.net/11858/00-001M-0000-0028-9C4E-C http://hdl.handle.net/11858/00-001M-0000-002A-6BA8-5 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2015JD023501 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
120 |
container_issue |
18 |
container_start_page |
9814 |
op_container_end_page |
9836 |
_version_ |
1774719778951266304 |