Role of Circulation Features on Black Carbon Transport into the Arctic in the Community Atmosphere Model Version 5 (CAM5), The
©2013. American Geophysical Union. All Rights Reserved. Current climate models generally underpredict the surface concentration of black carbon (BC) in the Arctic due to the uncertainties associated with emissions, transport, and removal. This bias is also present in the Community Atmosphere Model v...
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ftmountainschol:oai:mountainscholar.org:20.500.11919/720 2023-05-15T14:40:10+02:00 Role of Circulation Features on Black Carbon Transport into the Arctic in the Community Atmosphere Model Version 5 (CAM5), The Ma, Po-Lun Rasch, Philip J. Wang, Hailong Zhang, Kai Easter, Richard C. Tilmes, Simone Fast, Jerome D. Liu, Xiaohong Yoon, Jin-Ho Lamarque, Jean-Francois 2013-05-28 application/pdf https://hdl.handle.net/20.500.11919/720 https://doi.org/10.1002/jgrd.50411 English eng eng University of Wyoming. Libraries Faculty Publications - Atmospheric Science https://hdl.handle.net/20.500.11919/720 doi:10.1002/jgrd.50411 Atmospheric Science Faculty Publications Boiler circulation Meteorology Arctic BC CAM5 Climatological circulation Community atmosphere model Interannual variability Large-scale circulation transport Computer simulation Arctic Oscillation atmospheric modeling black carbon eddy model validation simulation Eastern Europe Northeast Asia Engineering Journal contribution 2013 ftmountainschol https://doi.org/20.500.11919/720 https://doi.org/10.1002/jgrd.50411 2022-03-07T21:08:28Z ©2013. American Geophysical Union. All Rights Reserved. Current climate models generally underpredict the surface concentration of black carbon (BC) in the Arctic due to the uncertainties associated with emissions, transport, and removal. This bias is also present in the Community Atmosphere Model version 5.1 (CAM5). In this study, we investigate the uncertainty of Arctic BC due to transport processes simulated by CAM5 by configuring the model to run in an "off-line mode" in which the large-scale circulation features are prescribed. We compare the simulated BC transport when the off-line model is driven by the meteorology predicted by the standard free-running CAM5 with simulations where the meteorology is constrained to agree with reanalysis products. Some circulation biases are apparent: the free-running CAM5 produces about 50% less transient eddy transport of BC than the reanalysis-driven simulations, which may be attributed to the coarse model resolution insufficient to represent eddies. Our analysis shows that the free-running CAM5 reasonably captures the essence of the Arctic Oscillation (AO), but some discernable differences in the spatial pattern of the AO between the free-running CAM5 and the reanalysis-driven simulations result in significantly different AO modulation of BC transport over northeast Asia and Eastern Europe. Nevertheless, we find that the overall climatological circulation patterns simulated by the free-running CAM5 generally resemble those from the reanalysis products, and BC transport is very similar in both simulation sets. Therefore, the simulated circulation features regulating the long-range BC transport are unlikely the most important cause of the large underprediction of surface BC concentration in the Arctic. Key points: Circulation biases in CAM5 is not the main reason for the low BC in the Arctic. The coarse model resolution produces the weak eddy transport. The AO bias in CAM5 produces incorrect interannual variability of BC transport. Other Non-Article Part of Journal/Newspaper Arctic black carbon Mountain Scholar (Digital Collections of Colorado and Wyoming) Arctic Journal of Geophysical Research: Atmospheres 118 10 4657 4669 |
institution |
Open Polar |
collection |
Mountain Scholar (Digital Collections of Colorado and Wyoming) |
op_collection_id |
ftmountainschol |
language |
English |
topic |
Boiler circulation Meteorology Arctic BC CAM5 Climatological circulation Community atmosphere model Interannual variability Large-scale circulation transport Computer simulation Arctic Oscillation atmospheric modeling black carbon eddy model validation simulation Eastern Europe Northeast Asia Engineering |
spellingShingle |
Boiler circulation Meteorology Arctic BC CAM5 Climatological circulation Community atmosphere model Interannual variability Large-scale circulation transport Computer simulation Arctic Oscillation atmospheric modeling black carbon eddy model validation simulation Eastern Europe Northeast Asia Engineering Ma, Po-Lun Rasch, Philip J. Wang, Hailong Zhang, Kai Easter, Richard C. Tilmes, Simone Fast, Jerome D. Liu, Xiaohong Yoon, Jin-Ho Lamarque, Jean-Francois Role of Circulation Features on Black Carbon Transport into the Arctic in the Community Atmosphere Model Version 5 (CAM5), The |
topic_facet |
Boiler circulation Meteorology Arctic BC CAM5 Climatological circulation Community atmosphere model Interannual variability Large-scale circulation transport Computer simulation Arctic Oscillation atmospheric modeling black carbon eddy model validation simulation Eastern Europe Northeast Asia Engineering |
description |
©2013. American Geophysical Union. All Rights Reserved. Current climate models generally underpredict the surface concentration of black carbon (BC) in the Arctic due to the uncertainties associated with emissions, transport, and removal. This bias is also present in the Community Atmosphere Model version 5.1 (CAM5). In this study, we investigate the uncertainty of Arctic BC due to transport processes simulated by CAM5 by configuring the model to run in an "off-line mode" in which the large-scale circulation features are prescribed. We compare the simulated BC transport when the off-line model is driven by the meteorology predicted by the standard free-running CAM5 with simulations where the meteorology is constrained to agree with reanalysis products. Some circulation biases are apparent: the free-running CAM5 produces about 50% less transient eddy transport of BC than the reanalysis-driven simulations, which may be attributed to the coarse model resolution insufficient to represent eddies. Our analysis shows that the free-running CAM5 reasonably captures the essence of the Arctic Oscillation (AO), but some discernable differences in the spatial pattern of the AO between the free-running CAM5 and the reanalysis-driven simulations result in significantly different AO modulation of BC transport over northeast Asia and Eastern Europe. Nevertheless, we find that the overall climatological circulation patterns simulated by the free-running CAM5 generally resemble those from the reanalysis products, and BC transport is very similar in both simulation sets. Therefore, the simulated circulation features regulating the long-range BC transport are unlikely the most important cause of the large underprediction of surface BC concentration in the Arctic. Key points: Circulation biases in CAM5 is not the main reason for the low BC in the Arctic. The coarse model resolution produces the weak eddy transport. The AO bias in CAM5 produces incorrect interannual variability of BC transport. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Ma, Po-Lun Rasch, Philip J. Wang, Hailong Zhang, Kai Easter, Richard C. Tilmes, Simone Fast, Jerome D. Liu, Xiaohong Yoon, Jin-Ho Lamarque, Jean-Francois |
author_facet |
Ma, Po-Lun Rasch, Philip J. Wang, Hailong Zhang, Kai Easter, Richard C. Tilmes, Simone Fast, Jerome D. Liu, Xiaohong Yoon, Jin-Ho Lamarque, Jean-Francois |
author_sort |
Ma, Po-Lun |
title |
Role of Circulation Features on Black Carbon Transport into the Arctic in the Community Atmosphere Model Version 5 (CAM5), The |
title_short |
Role of Circulation Features on Black Carbon Transport into the Arctic in the Community Atmosphere Model Version 5 (CAM5), The |
title_full |
Role of Circulation Features on Black Carbon Transport into the Arctic in the Community Atmosphere Model Version 5 (CAM5), The |
title_fullStr |
Role of Circulation Features on Black Carbon Transport into the Arctic in the Community Atmosphere Model Version 5 (CAM5), The |
title_full_unstemmed |
Role of Circulation Features on Black Carbon Transport into the Arctic in the Community Atmosphere Model Version 5 (CAM5), The |
title_sort |
role of circulation features on black carbon transport into the arctic in the community atmosphere model version 5 (cam5), the |
publisher |
University of Wyoming. Libraries |
publishDate |
2013 |
url |
https://hdl.handle.net/20.500.11919/720 https://doi.org/10.1002/jgrd.50411 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic black carbon |
genre_facet |
Arctic black carbon |
op_source |
Atmospheric Science Faculty Publications |
op_relation |
Faculty Publications - Atmospheric Science https://hdl.handle.net/20.500.11919/720 doi:10.1002/jgrd.50411 |
op_doi |
https://doi.org/20.500.11919/720 https://doi.org/10.1002/jgrd.50411 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
118 |
container_issue |
10 |
container_start_page |
4657 |
op_container_end_page |
4669 |
_version_ |
1766312066844459008 |