A relationship between the aerodynamic and physical roughness of winter sea ice
Abstract A bulk flux algorithm predicts the turbulent surface fluxes of momentum and sensible and latent heat from mean measured or modelled meteorological variables. The bulk flux algorithm resulting from data collected over winter sea ice during SHEBA, the experiment to study the Surface Heat Budg...
Published in: | Quarterly Journal of the Royal Meteorological Society |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2011
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/qj.842 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.842 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.842 |
id |
crwiley:10.1002/qj.842 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/qj.842 2024-09-09T19:06:20+00:00 A relationship between the aerodynamic and physical roughness of winter sea ice Andreas, Edgar L 2011 http://dx.doi.org/10.1002/qj.842 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.842 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.842 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Quarterly Journal of the Royal Meteorological Society volume 137, issue 659, page 1581-1588 ISSN 0035-9009 1477-870X journal-article 2011 crwiley https://doi.org/10.1002/qj.842 2024-06-18T04:15:18Z Abstract A bulk flux algorithm predicts the turbulent surface fluxes of momentum and sensible and latent heat from mean measured or modelled meteorological variables. The bulk flux algorithm resulting from data collected over winter sea ice during SHEBA, the experiment to study the Surface Heat Budget of the Arctic Ocean, failed, however, in its first trial to predict the turbulent momentum flux over sea ice in the Antarctic. This result suggests that the main parameter for predicting the momentum flux, the aerodynamics roughness length z 0 , does not respond just to the friction velocity, as in the SHEBA algorithm, but is closely related to the physical roughness of snow‐covered sea ice and may need to be site‐specific. I investigate this idea with simultaneous measurements of z 0 and the physical roughness of the surface, ξ , at Ice Station Weddell. The metric ξ derives from surveys of surface elevation and is related to but always less than the standard deviation in surface elevation. On combining the z 0 – ξ pairs from Ice Station Weddell with similar data obtained over Arctic sea ice, I show that the Arctic and Antarctic z 0 – ξ data lie along a continuum such that measuring ξ could provide a means for estimating a site‐specific z 0 for any global sea ice surface. Backscatter data from satellite‐borne synthetic aperture radar might provide a remotely sensed estimate of ξ . Copyright © 2011 Royal Meteorological Society Article in Journal/Newspaper Antarc* Antarctic Arctic Arctic Ocean Sea ice Surface Heat Budget of the Arctic Ocean Wiley Online Library Antarctic Arctic Arctic Ocean The Antarctic Weddell Quarterly Journal of the Royal Meteorological Society 137 659 1581 1588 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract A bulk flux algorithm predicts the turbulent surface fluxes of momentum and sensible and latent heat from mean measured or modelled meteorological variables. The bulk flux algorithm resulting from data collected over winter sea ice during SHEBA, the experiment to study the Surface Heat Budget of the Arctic Ocean, failed, however, in its first trial to predict the turbulent momentum flux over sea ice in the Antarctic. This result suggests that the main parameter for predicting the momentum flux, the aerodynamics roughness length z 0 , does not respond just to the friction velocity, as in the SHEBA algorithm, but is closely related to the physical roughness of snow‐covered sea ice and may need to be site‐specific. I investigate this idea with simultaneous measurements of z 0 and the physical roughness of the surface, ξ , at Ice Station Weddell. The metric ξ derives from surveys of surface elevation and is related to but always less than the standard deviation in surface elevation. On combining the z 0 – ξ pairs from Ice Station Weddell with similar data obtained over Arctic sea ice, I show that the Arctic and Antarctic z 0 – ξ data lie along a continuum such that measuring ξ could provide a means for estimating a site‐specific z 0 for any global sea ice surface. Backscatter data from satellite‐borne synthetic aperture radar might provide a remotely sensed estimate of ξ . Copyright © 2011 Royal Meteorological Society |
format |
Article in Journal/Newspaper |
author |
Andreas, Edgar L |
spellingShingle |
Andreas, Edgar L A relationship between the aerodynamic and physical roughness of winter sea ice |
author_facet |
Andreas, Edgar L |
author_sort |
Andreas, Edgar L |
title |
A relationship between the aerodynamic and physical roughness of winter sea ice |
title_short |
A relationship between the aerodynamic and physical roughness of winter sea ice |
title_full |
A relationship between the aerodynamic and physical roughness of winter sea ice |
title_fullStr |
A relationship between the aerodynamic and physical roughness of winter sea ice |
title_full_unstemmed |
A relationship between the aerodynamic and physical roughness of winter sea ice |
title_sort |
relationship between the aerodynamic and physical roughness of winter sea ice |
publisher |
Wiley |
publishDate |
2011 |
url |
http://dx.doi.org/10.1002/qj.842 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.842 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.842 |
geographic |
Antarctic Arctic Arctic Ocean The Antarctic Weddell |
geographic_facet |
Antarctic Arctic Arctic Ocean The Antarctic Weddell |
genre |
Antarc* Antarctic Arctic Arctic Ocean Sea ice Surface Heat Budget of the Arctic Ocean |
genre_facet |
Antarc* Antarctic Arctic Arctic Ocean Sea ice Surface Heat Budget of the Arctic Ocean |
op_source |
Quarterly Journal of the Royal Meteorological Society volume 137, issue 659, page 1581-1588 ISSN 0035-9009 1477-870X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/qj.842 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
137 |
container_issue |
659 |
container_start_page |
1581 |
op_container_end_page |
1588 |
_version_ |
1809820389390417920 |