Aerosols at the poles: an AeroCom Phase II multi-model evaluation
Atmospheric aerosols from anthropogenic and natural sources reach the polar regions through long-range transport and affect the local radiation balance. Such transport is, however, poorly constrained in present-day global climate models, and few multi-model evaluations of polar anthropogenic aerosol...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | http://hdl.handle.net/11858/00-001M-0000-002E-1791-8 http://hdl.handle.net/11858/00-001M-0000-002E-1793-4 http://hdl.handle.net/11858/00-001M-0000-002E-1794-2 |
id |
ftpubman:oai:pure.mpg.de:item_2492365 |
---|---|
record_format |
openpolar |
spelling |
ftpubman:oai:pure.mpg.de:item_2492365 2023-08-20T04:02:24+02:00 Aerosols at the poles: an AeroCom Phase II multi-model evaluation Sand, M. Samset, B. Balkanski, Y. Bauer, S. Bellouin, N. Berntsen, T. Bian, H. Chin, M. Diehl, T. Easter, R. Ghan, S. Iversen, T. Kirkevag, A. Lamarque, J. Lin, G. Liu, X. Luo, G. Myhre, G. van Noije, T. Penner, J. Schulz, M. Seland, O. Skeie, R. Stier, P. Takemura, T. Tsigaridis, K. Yu, F. Zhang, K. Zhang, H. 2017-10 application/pdf http://hdl.handle.net/11858/00-001M-0000-002E-1791-8 http://hdl.handle.net/11858/00-001M-0000-002E-1793-4 http://hdl.handle.net/11858/00-001M-0000-002E-1794-2 eng eng info:eu-repo/grantAgreement/EC/FP7/FP7-280025 info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-17-12197-2017 http://hdl.handle.net/11858/00-001M-0000-002E-1791-8 http://hdl.handle.net/11858/00-001M-0000-002E-1793-4 http://hdl.handle.net/11858/00-001M-0000-002E-1794-2 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/3.0/ Atmospheric Chemistry and Physics info:eu-repo/semantics/article 2017 ftpubman https://doi.org/10.5194/acp-17-12197-2017 2023-08-01T23:20:55Z Atmospheric aerosols from anthropogenic and natural sources reach the polar regions through long-range transport and affect the local radiation balance. Such transport is, however, poorly constrained in present-day global climate models, and few multi-model evaluations of polar anthropogenic aerosol radiative forcing exist. Here we compare the aerosol optical depth (AOD) at 550 nm from simulations with 16 global aerosol models from the AeroCom Phase II model intercomparison project with available observations at both poles. We show that the annual mean multi-model median is representative of the observations in Arctic, but that the intermodel spread is large. We also document the geographical distribution and seasonal cycle of the AOD for the individual aerosol species: black carbon (BC) from fossil fuel and biomass burning, sulfate, organic aerosols (OAs), dust, and sea-salt. For a subset of models that represent nitrate and secondary organic aerosols (SOAs), we document the role of these aerosols at high latitudes. The seasonal dependence of natural and anthropogenic aerosols differs with natural aerosols peaking in winter (sea-salt) and spring (dust), whereas AOD from anthropogenic aerosols peaks in late spring and summer. The models produce a median annual mean AOD of 0.07 in the Arctic (defined here as north of 60 degrees N). The models also predict a noteworthy aerosol transport to the Antarctic (south of 70 degrees S) with a resulting AOD varying between 0.01 and 0.02. The models have estimated the shortwave anthropogenic radiative forcing contributions to the direct aerosol effect (DAE) associated with BC and OA from fossil fuel and biofuel (FF), sulfate, SOAs, nitrate, and biomass burning from BC and OA emissions combined. The Arctic modelled annual mean DAE is slightly negative ( -0.12Wm(-2)), dominated by a positive BC FF DAE in spring and a negative sulfate DAE in summer. The Antarctic DAE is governed by BC FF. We perform sensitivity experiments with one of the AeroCom models (GISS modelE) to ... Article in Journal/Newspaper Antarc* Antarctic Arctic black carbon Max Planck Society: MPG.PuRe Antarctic Arctic The Antarctic Atmospheric Chemistry and Physics 17 19 12197 12218 |
institution |
Open Polar |
collection |
Max Planck Society: MPG.PuRe |
op_collection_id |
ftpubman |
language |
English |
description |
Atmospheric aerosols from anthropogenic and natural sources reach the polar regions through long-range transport and affect the local radiation balance. Such transport is, however, poorly constrained in present-day global climate models, and few multi-model evaluations of polar anthropogenic aerosol radiative forcing exist. Here we compare the aerosol optical depth (AOD) at 550 nm from simulations with 16 global aerosol models from the AeroCom Phase II model intercomparison project with available observations at both poles. We show that the annual mean multi-model median is representative of the observations in Arctic, but that the intermodel spread is large. We also document the geographical distribution and seasonal cycle of the AOD for the individual aerosol species: black carbon (BC) from fossil fuel and biomass burning, sulfate, organic aerosols (OAs), dust, and sea-salt. For a subset of models that represent nitrate and secondary organic aerosols (SOAs), we document the role of these aerosols at high latitudes. The seasonal dependence of natural and anthropogenic aerosols differs with natural aerosols peaking in winter (sea-salt) and spring (dust), whereas AOD from anthropogenic aerosols peaks in late spring and summer. The models produce a median annual mean AOD of 0.07 in the Arctic (defined here as north of 60 degrees N). The models also predict a noteworthy aerosol transport to the Antarctic (south of 70 degrees S) with a resulting AOD varying between 0.01 and 0.02. The models have estimated the shortwave anthropogenic radiative forcing contributions to the direct aerosol effect (DAE) associated with BC and OA from fossil fuel and biofuel (FF), sulfate, SOAs, nitrate, and biomass burning from BC and OA emissions combined. The Arctic modelled annual mean DAE is slightly negative ( -0.12Wm(-2)), dominated by a positive BC FF DAE in spring and a negative sulfate DAE in summer. The Antarctic DAE is governed by BC FF. We perform sensitivity experiments with one of the AeroCom models (GISS modelE) to ... |
format |
Article in Journal/Newspaper |
author |
Sand, M. Samset, B. Balkanski, Y. Bauer, S. Bellouin, N. Berntsen, T. Bian, H. Chin, M. Diehl, T. Easter, R. Ghan, S. Iversen, T. Kirkevag, A. Lamarque, J. Lin, G. Liu, X. Luo, G. Myhre, G. van Noije, T. Penner, J. Schulz, M. Seland, O. Skeie, R. Stier, P. Takemura, T. Tsigaridis, K. Yu, F. Zhang, K. Zhang, H. |
spellingShingle |
Sand, M. Samset, B. Balkanski, Y. Bauer, S. Bellouin, N. Berntsen, T. Bian, H. Chin, M. Diehl, T. Easter, R. Ghan, S. Iversen, T. Kirkevag, A. Lamarque, J. Lin, G. Liu, X. Luo, G. Myhre, G. van Noije, T. Penner, J. Schulz, M. Seland, O. Skeie, R. Stier, P. Takemura, T. Tsigaridis, K. Yu, F. Zhang, K. Zhang, H. Aerosols at the poles: an AeroCom Phase II multi-model evaluation |
author_facet |
Sand, M. Samset, B. Balkanski, Y. Bauer, S. Bellouin, N. Berntsen, T. Bian, H. Chin, M. Diehl, T. Easter, R. Ghan, S. Iversen, T. Kirkevag, A. Lamarque, J. Lin, G. Liu, X. Luo, G. Myhre, G. van Noije, T. Penner, J. Schulz, M. Seland, O. Skeie, R. Stier, P. Takemura, T. Tsigaridis, K. Yu, F. Zhang, K. Zhang, H. |
author_sort |
Sand, M. |
title |
Aerosols at the poles: an AeroCom Phase II multi-model evaluation |
title_short |
Aerosols at the poles: an AeroCom Phase II multi-model evaluation |
title_full |
Aerosols at the poles: an AeroCom Phase II multi-model evaluation |
title_fullStr |
Aerosols at the poles: an AeroCom Phase II multi-model evaluation |
title_full_unstemmed |
Aerosols at the poles: an AeroCom Phase II multi-model evaluation |
title_sort |
aerosols at the poles: an aerocom phase ii multi-model evaluation |
publishDate |
2017 |
url |
http://hdl.handle.net/11858/00-001M-0000-002E-1791-8 http://hdl.handle.net/11858/00-001M-0000-002E-1793-4 http://hdl.handle.net/11858/00-001M-0000-002E-1794-2 |
geographic |
Antarctic Arctic The Antarctic |
geographic_facet |
Antarctic Arctic The Antarctic |
genre |
Antarc* Antarctic Arctic black carbon |
genre_facet |
Antarc* Antarctic Arctic black carbon |
op_source |
Atmospheric Chemistry and Physics |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/FP7-280025 info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-17-12197-2017 http://hdl.handle.net/11858/00-001M-0000-002E-1791-8 http://hdl.handle.net/11858/00-001M-0000-002E-1793-4 http://hdl.handle.net/11858/00-001M-0000-002E-1794-2 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.5194/acp-17-12197-2017 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
17 |
container_issue |
19 |
container_start_page |
12197 |
op_container_end_page |
12218 |
_version_ |
1774712844348030976 |