Ship-based estimates of momentum transfer coefficient over sea ice and recommendations for its parameterization
A major source of uncertainty in both climate projections and seasonal forecasting of sea ice is inadequate representation of surface–atmosphere exchange processes. The observations needed to improve understanding and reduce uncertainty in surface exchange parameterizations are challenging to make a...
Main Authors: | , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2022
|
Subjects: | |
Online Access: | https://eprints.whiterose.ac.uk/185717/ https://eprints.whiterose.ac.uk/185717/1/acp-22-4763-2022.pdf |
id |
ftleedsuniv:oai:eprints.whiterose.ac.uk:185717 |
---|---|
record_format |
openpolar |
spelling |
ftleedsuniv:oai:eprints.whiterose.ac.uk:185717 2023-05-15T14:57:16+02:00 Ship-based estimates of momentum transfer coefficient over sea ice and recommendations for its parameterization Srivastava, P Brooks, IM Prytherch, J Salisbury, DJ Elvidge, AD Renfrew, IA Yelland, MJ 2022-04-12 text https://eprints.whiterose.ac.uk/185717/ https://eprints.whiterose.ac.uk/185717/1/acp-22-4763-2022.pdf en eng Copernicus Publications https://eprints.whiterose.ac.uk/185717/1/acp-22-4763-2022.pdf Srivastava, P, Brooks, IM orcid.org/0000-0002-5051-1322 , Prytherch, J et al. (4 more authors) (2022) Ship-based estimates of momentum transfer coefficient over sea ice and recommendations for its parameterization. Atmospheric Chemistry and Physics, 22 (7). pp. 4763-4778. ISSN 1680-7316 cc_by_4 CC-BY Article NonPeerReviewed 2022 ftleedsuniv 2023-01-30T22:46:05Z A major source of uncertainty in both climate projections and seasonal forecasting of sea ice is inadequate representation of surface–atmosphere exchange processes. The observations needed to improve understanding and reduce uncertainty in surface exchange parameterizations are challenging to make and rare. Here we present a large dataset of ship-based measurements of surface momentum exchange (surface drag) in the vicinity of sea ice from the Arctic Clouds in Summer Experiment (ACSE) in July–October 2014, and the Arctic Ocean 2016 experiment (AO2016) in August–September 2016. The combined dataset provides an extensive record of momentum flux over a wide range of surface conditions spanning the late summer melt and early autumn freeze-up periods, and a wide range of atmospheric stabilities. Surface exchange coefficients are estimated from in situ eddy covariance measurements. The local sea-ice fraction is determined via automated processing of imagery from ship-mounted cameras. The surface drag coefficient, CD10n, peaks at local ice fractions of 0.6–0.8, consistent with both recent aircraft-based observations and theory. Two state-of-the-art parameterizations have been tuned to our observations, with both providing excellent fits to the measurements. Article in Journal/Newspaper Arctic Arctic Ocean Sea ice White Rose Research Online (Universities of Leeds, Sheffield & York) Arctic Arctic Ocean |
institution |
Open Polar |
collection |
White Rose Research Online (Universities of Leeds, Sheffield & York) |
op_collection_id |
ftleedsuniv |
language |
English |
description |
A major source of uncertainty in both climate projections and seasonal forecasting of sea ice is inadequate representation of surface–atmosphere exchange processes. The observations needed to improve understanding and reduce uncertainty in surface exchange parameterizations are challenging to make and rare. Here we present a large dataset of ship-based measurements of surface momentum exchange (surface drag) in the vicinity of sea ice from the Arctic Clouds in Summer Experiment (ACSE) in July–October 2014, and the Arctic Ocean 2016 experiment (AO2016) in August–September 2016. The combined dataset provides an extensive record of momentum flux over a wide range of surface conditions spanning the late summer melt and early autumn freeze-up periods, and a wide range of atmospheric stabilities. Surface exchange coefficients are estimated from in situ eddy covariance measurements. The local sea-ice fraction is determined via automated processing of imagery from ship-mounted cameras. The surface drag coefficient, CD10n, peaks at local ice fractions of 0.6–0.8, consistent with both recent aircraft-based observations and theory. Two state-of-the-art parameterizations have been tuned to our observations, with both providing excellent fits to the measurements. |
format |
Article in Journal/Newspaper |
author |
Srivastava, P Brooks, IM Prytherch, J Salisbury, DJ Elvidge, AD Renfrew, IA Yelland, MJ |
spellingShingle |
Srivastava, P Brooks, IM Prytherch, J Salisbury, DJ Elvidge, AD Renfrew, IA Yelland, MJ Ship-based estimates of momentum transfer coefficient over sea ice and recommendations for its parameterization |
author_facet |
Srivastava, P Brooks, IM Prytherch, J Salisbury, DJ Elvidge, AD Renfrew, IA Yelland, MJ |
author_sort |
Srivastava, P |
title |
Ship-based estimates of momentum transfer coefficient over sea ice and recommendations for its parameterization |
title_short |
Ship-based estimates of momentum transfer coefficient over sea ice and recommendations for its parameterization |
title_full |
Ship-based estimates of momentum transfer coefficient over sea ice and recommendations for its parameterization |
title_fullStr |
Ship-based estimates of momentum transfer coefficient over sea ice and recommendations for its parameterization |
title_full_unstemmed |
Ship-based estimates of momentum transfer coefficient over sea ice and recommendations for its parameterization |
title_sort |
ship-based estimates of momentum transfer coefficient over sea ice and recommendations for its parameterization |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://eprints.whiterose.ac.uk/185717/ https://eprints.whiterose.ac.uk/185717/1/acp-22-4763-2022.pdf |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Ocean Sea ice |
op_relation |
https://eprints.whiterose.ac.uk/185717/1/acp-22-4763-2022.pdf Srivastava, P, Brooks, IM orcid.org/0000-0002-5051-1322 , Prytherch, J et al. (4 more authors) (2022) Ship-based estimates of momentum transfer coefficient over sea ice and recommendations for its parameterization. Atmospheric Chemistry and Physics, 22 (7). pp. 4763-4778. ISSN 1680-7316 |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
_version_ |
1766329357769375744 |