Unraveling the Role of Turbulent Mixing, Surface Coupling and Radiation in a Polar Stable Boundary Layer
Observations indicate that the Arctic regions are very sensitive to climate change and warm more rapidly than the global average in the last few decades, a feature known as ‘Arctic Amplification'. Global climate models reproduce a similar signal for the Arctic warming, though their magnitude va...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Meteorological Society
2012
|
Subjects: | |
Online Access: | https://research.wur.nl/en/publications/unraveling-the-role-of-turbulent-mixing-surface-coupling-and-radi |
id |
ftunivwagenin:oai:library.wur.nl:wurpubs/431496 |
---|---|
record_format |
openpolar |
spelling |
ftunivwagenin:oai:library.wur.nl:wurpubs/431496 2024-02-04T09:57:50+01:00 Unraveling the Role of Turbulent Mixing, Surface Coupling and Radiation in a Polar Stable Boundary Layer Sterk, H.A.M. Steeneveld, G.J. Holtslag, A.A.M. 2012 application/pdf https://research.wur.nl/en/publications/unraveling-the-role-of-turbulent-mixing-surface-coupling-and-radi en eng American Meteorological Society https://edepot.wur.nl/240874 https://research.wur.nl/en/publications/unraveling-the-role-of-turbulent-mixing-surface-coupling-and-radi info:eu-repo/semantics/openAccess Wageningen University & Research 20th Symposium on Boundary Layers and Turbulence/18th Conference on Air-Sea Interaction, American Meteorological Society (9-13 July 2012, Boston, MA) Life Science info:eu-repo/semantics/conferenceObject Article in monograph or in proceedings info:eu-repo/semantics/publishedVersion 2012 ftunivwagenin 2024-01-10T23:21:46Z Observations indicate that the Arctic regions are very sensitive to climate change and warm more rapidly than the global average in the last few decades, a feature known as ‘Arctic Amplification'. Global climate models reproduce a similar signal for the Arctic warming, though their magnitude varies substantially both in temporal and spatial patterns. Especially in wintertime, large biases are found, indicating the need for a better understanding of the stable boundary layer (SBL) coupled to the surface. The uncertainty may partly be caused by differences in model formulations for the most relevant snow/ice physics, atmospheric mixing and radiation used in the various models. This multiplicity of processes forces us to investigate which process has the relatively largest impact in determining the model behavior. This study focusses on the role of turbulent mixing, surface coupling and radiation in a polar boundary layer. The goal is to gain insight in the relative role of these small scale processes and how these processes can compensate each other. As such, we extend the GABLS1 model intercomparison for turbulent mixing (Cuxart et al., 2006) with the other relevant physical processes in the SBL over ice. We use the Single Column Model (SCM) version of the Weather Research and Forecasting (WRF) mesoscale meteorological model and run different combinations of boundary-layer and radiation schemes (using one state of the art surface scheme). As such, an intercomparison of schemes within a single model is obtained. We confirm a wide variety in the state of the atmosphere and the surface variables for the selected parameterization schemes. Subsequently, a sensitivity analysis for one particular combination of parameterization schemes is performed for the governing processes of turbulent mixing, surface coupling and radiation. Using a novel analysis method based on time-integrated SBL development, the variation between the sensitivity runs indicates the relative orientation of model sensitivities to variations in ... Article in Journal/Newspaper Arctic Climate change Wageningen UR (University & Research Centre): Digital Library Arctic |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
Life Science |
spellingShingle |
Life Science Sterk, H.A.M. Steeneveld, G.J. Holtslag, A.A.M. Unraveling the Role of Turbulent Mixing, Surface Coupling and Radiation in a Polar Stable Boundary Layer |
topic_facet |
Life Science |
description |
Observations indicate that the Arctic regions are very sensitive to climate change and warm more rapidly than the global average in the last few decades, a feature known as ‘Arctic Amplification'. Global climate models reproduce a similar signal for the Arctic warming, though their magnitude varies substantially both in temporal and spatial patterns. Especially in wintertime, large biases are found, indicating the need for a better understanding of the stable boundary layer (SBL) coupled to the surface. The uncertainty may partly be caused by differences in model formulations for the most relevant snow/ice physics, atmospheric mixing and radiation used in the various models. This multiplicity of processes forces us to investigate which process has the relatively largest impact in determining the model behavior. This study focusses on the role of turbulent mixing, surface coupling and radiation in a polar boundary layer. The goal is to gain insight in the relative role of these small scale processes and how these processes can compensate each other. As such, we extend the GABLS1 model intercomparison for turbulent mixing (Cuxart et al., 2006) with the other relevant physical processes in the SBL over ice. We use the Single Column Model (SCM) version of the Weather Research and Forecasting (WRF) mesoscale meteorological model and run different combinations of boundary-layer and radiation schemes (using one state of the art surface scheme). As such, an intercomparison of schemes within a single model is obtained. We confirm a wide variety in the state of the atmosphere and the surface variables for the selected parameterization schemes. Subsequently, a sensitivity analysis for one particular combination of parameterization schemes is performed for the governing processes of turbulent mixing, surface coupling and radiation. Using a novel analysis method based on time-integrated SBL development, the variation between the sensitivity runs indicates the relative orientation of model sensitivities to variations in ... |
format |
Article in Journal/Newspaper |
author |
Sterk, H.A.M. Steeneveld, G.J. Holtslag, A.A.M. |
author_facet |
Sterk, H.A.M. Steeneveld, G.J. Holtslag, A.A.M. |
author_sort |
Sterk, H.A.M. |
title |
Unraveling the Role of Turbulent Mixing, Surface Coupling and Radiation in a Polar Stable Boundary Layer |
title_short |
Unraveling the Role of Turbulent Mixing, Surface Coupling and Radiation in a Polar Stable Boundary Layer |
title_full |
Unraveling the Role of Turbulent Mixing, Surface Coupling and Radiation in a Polar Stable Boundary Layer |
title_fullStr |
Unraveling the Role of Turbulent Mixing, Surface Coupling and Radiation in a Polar Stable Boundary Layer |
title_full_unstemmed |
Unraveling the Role of Turbulent Mixing, Surface Coupling and Radiation in a Polar Stable Boundary Layer |
title_sort |
unraveling the role of turbulent mixing, surface coupling and radiation in a polar stable boundary layer |
publisher |
American Meteorological Society |
publishDate |
2012 |
url |
https://research.wur.nl/en/publications/unraveling-the-role-of-turbulent-mixing-surface-coupling-and-radi |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
20th Symposium on Boundary Layers and Turbulence/18th Conference on Air-Sea Interaction, American Meteorological Society (9-13 July 2012, Boston, MA) |
op_relation |
https://edepot.wur.nl/240874 https://research.wur.nl/en/publications/unraveling-the-role-of-turbulent-mixing-surface-coupling-and-radi |
op_rights |
info:eu-repo/semantics/openAccess Wageningen University & Research |
_version_ |
1789962176979533824 |