Evaluation of atmospheric boundary layer - surface process relationships in a regional climate model along an East Antarctic traverse
Some primary physical relationships related to the surface climate and atmospheric boundary layer were examined over East Antarctica and evaluated in the regional climate model HIRHAM for 2005–2008. For stable conditions, the observation-derived relationship between wind-scaled sensible heat flux an...
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ftawi:oai:epic.awi.de:30473 2023-05-15T13:46:52+02:00 Evaluation of atmospheric boundary layer - surface process relationships in a regional climate model along an East Antarctic traverse Rinke, Annette Ma, Yongfeng Bian, Lingen Xin, Yufei Dethloff, Klaus Persson, P. O. G. Lüpkes, Christof Xiao, Cunde 2012-05 https://epic.awi.de/id/eprint/30473/ https://hdl.handle.net/10013/epic.39387 unknown AMER GEOPHYSICAL UNION Rinke, A. orcid:0000-0002-6685-9219 , Ma, Y. , Bian, L. , Xin, Y. , Dethloff, K. , Persson, P. O. G. , Lüpkes, C. orcid:0000-0001-6518-0717 and Xiao, C. (2012) Evaluation of atmospheric boundary layer - surface process relationships in a regional climate model along an East Antarctic traverse , Journal of Geophysical Research-Atmospheres, 117 (D09121) . doi:10.1029/2011JD016441 <https://doi.org/10.1029/2011JD016441> , hdl:10013/epic.39387 EPIC3Journal of Geophysical Research-Atmospheres, AMER GEOPHYSICAL UNION, 117(D09121), ISSN: 0148-0227 Article isiRev 2012 ftawi https://doi.org/10.1029/2011JD016441 2021-12-24T15:37:44Z Some primary physical relationships related to the surface climate and atmospheric boundary layer were examined over East Antarctica and evaluated in the regional climate model HIRHAM for 2005–2008. For stable conditions, the observation-derived relationship between wind-scaled sensible heat flux and air-surface temperature difference distinctively differs between different surface flux parameterizations. Some of them decrease the heat transfer coefficient CH for strongly stable conditions, while others, such as the Louis scheme, do not. However, HIRHAM’s application of the Louis parameterization produces small CH for strongly stable conditions similar to observations and other schemes, likely because a surface roughness much larger than observed is used and the bulk Richardson number differs. For Zhongshan, the observed radiation-cloud, temperature-cloud, and temperature-wind relationships are reproduced in the model, though quantitative differences are evident. An observed longwave warming effect of clouds is larger in the model, while the reduction of downwelling shortwave radiation by clouds is twice as large in the model. The model partially reproduces an observed weak wind regime associated with atmospheric decoupling, but fails to reproduce increasing temperatures with increasing winds. The quantitative differences in the radiation-cloud relationship suggest that errors in cloud characteristics produce a significant deficiency in downwelling net radiation for clear and cloudy conditions. This deficiency is the likely cause of HIRHAM’s strong cold bias in the surface temperature and positive bias in near-surface stability. The sensible heat flux analyses and a sensitivity test suggest that errors in the sensible heat flux relationship are not the primary cause. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic East Antarctica Zhongshan ENVELOPE(76.371,76.371,-69.373,-69.373) Journal of Geophysical Research: Atmospheres 117 D9 n/a n/a |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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description |
Some primary physical relationships related to the surface climate and atmospheric boundary layer were examined over East Antarctica and evaluated in the regional climate model HIRHAM for 2005–2008. For stable conditions, the observation-derived relationship between wind-scaled sensible heat flux and air-surface temperature difference distinctively differs between different surface flux parameterizations. Some of them decrease the heat transfer coefficient CH for strongly stable conditions, while others, such as the Louis scheme, do not. However, HIRHAM’s application of the Louis parameterization produces small CH for strongly stable conditions similar to observations and other schemes, likely because a surface roughness much larger than observed is used and the bulk Richardson number differs. For Zhongshan, the observed radiation-cloud, temperature-cloud, and temperature-wind relationships are reproduced in the model, though quantitative differences are evident. An observed longwave warming effect of clouds is larger in the model, while the reduction of downwelling shortwave radiation by clouds is twice as large in the model. The model partially reproduces an observed weak wind regime associated with atmospheric decoupling, but fails to reproduce increasing temperatures with increasing winds. The quantitative differences in the radiation-cloud relationship suggest that errors in cloud characteristics produce a significant deficiency in downwelling net radiation for clear and cloudy conditions. This deficiency is the likely cause of HIRHAM’s strong cold bias in the surface temperature and positive bias in near-surface stability. The sensible heat flux analyses and a sensitivity test suggest that errors in the sensible heat flux relationship are not the primary cause. |
format |
Article in Journal/Newspaper |
author |
Rinke, Annette Ma, Yongfeng Bian, Lingen Xin, Yufei Dethloff, Klaus Persson, P. O. G. Lüpkes, Christof Xiao, Cunde |
spellingShingle |
Rinke, Annette Ma, Yongfeng Bian, Lingen Xin, Yufei Dethloff, Klaus Persson, P. O. G. Lüpkes, Christof Xiao, Cunde Evaluation of atmospheric boundary layer - surface process relationships in a regional climate model along an East Antarctic traverse |
author_facet |
Rinke, Annette Ma, Yongfeng Bian, Lingen Xin, Yufei Dethloff, Klaus Persson, P. O. G. Lüpkes, Christof Xiao, Cunde |
author_sort |
Rinke, Annette |
title |
Evaluation of atmospheric boundary layer - surface process relationships in a regional climate model along an East Antarctic traverse |
title_short |
Evaluation of atmospheric boundary layer - surface process relationships in a regional climate model along an East Antarctic traverse |
title_full |
Evaluation of atmospheric boundary layer - surface process relationships in a regional climate model along an East Antarctic traverse |
title_fullStr |
Evaluation of atmospheric boundary layer - surface process relationships in a regional climate model along an East Antarctic traverse |
title_full_unstemmed |
Evaluation of atmospheric boundary layer - surface process relationships in a regional climate model along an East Antarctic traverse |
title_sort |
evaluation of atmospheric boundary layer - surface process relationships in a regional climate model along an east antarctic traverse |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2012 |
url |
https://epic.awi.de/id/eprint/30473/ https://hdl.handle.net/10013/epic.39387 |
long_lat |
ENVELOPE(76.371,76.371,-69.373,-69.373) |
geographic |
Antarctic East Antarctica Zhongshan |
geographic_facet |
Antarctic East Antarctica Zhongshan |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_source |
EPIC3Journal of Geophysical Research-Atmospheres, AMER GEOPHYSICAL UNION, 117(D09121), ISSN: 0148-0227 |
op_relation |
Rinke, A. orcid:0000-0002-6685-9219 , Ma, Y. , Bian, L. , Xin, Y. , Dethloff, K. , Persson, P. O. G. , Lüpkes, C. orcid:0000-0001-6518-0717 and Xiao, C. (2012) Evaluation of atmospheric boundary layer - surface process relationships in a regional climate model along an East Antarctic traverse , Journal of Geophysical Research-Atmospheres, 117 (D09121) . doi:10.1029/2011JD016441 <https://doi.org/10.1029/2011JD016441> , hdl:10013/epic.39387 |
op_doi |
https://doi.org/10.1029/2011JD016441 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
117 |
container_issue |
D9 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766245461843247104 |