Microstructure observations during the spring 2011 STRATIPHYT-II cruise in the northeast Atlantic
Small-scale temperature and conductivity variations have been measured in the upper 100 m of the northeast Atlantic during the STRATIPHYT-II cruise (Las Palmas-Reykjavik, 6 April-3 May 2011). The measurements were done at midday and comprised 2 to 15 vertical profiles at each station. The derived tu...
Published in: | Ocean Science |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
European Geosciences Union
2012
|
Subjects: | |
Online Access: | http://hdl.handle.net/10261/218119 https://doi.org/10.5194/os-8-945-2012 |
id |
ftcsic:oai:digital.csic.es:10261/218119 |
---|---|
record_format |
openpolar |
spelling |
ftcsic:oai:digital.csic.es:10261/218119 2024-02-11T10:07:00+01:00 Microstructure observations during the spring 2011 STRATIPHYT-II cruise in the northeast Atlantic Jurado, Elena Dijkstra, H.A. Van Der Woerd, H.J. 2012 http://hdl.handle.net/10261/218119 https://doi.org/10.5194/os-8-945-2012 unknown European Geosciences Union Publisher's version http://dx.doi.org/10.5194/os-8-945-2012 Sí doi:10.5194/os-8-945-2012 issn: 1812-0784 Ocean Science 8: 945- 957 (2012) http://hdl.handle.net/10261/218119 open artículo http://purl.org/coar/resource_type/c_6501 2012 ftcsic https://doi.org/10.5194/os-8-945-2012 2024-01-16T10:57:05Z Small-scale temperature and conductivity variations have been measured in the upper 100 m of the northeast Atlantic during the STRATIPHYT-II cruise (Las Palmas-Reykjavik, 6 April-3 May 2011). The measurements were done at midday and comprised 2 to 15 vertical profiles at each station. The derived turbulent quantities show a transition between weakly-stratified (mixed layer depth, MLD, <100) and well-mixed waters (MLD > 100), which was centered at about 48°N. The temperature eddy diffusivities, K T, range from 10 -5 to 100 m 2 s -1 in the weakly-stratified stations, and range from 3 × 10 -4 to 2 × 100 m 2 s -1 in the well-mixed stations. The turbulent kinetic energy dissipation rates, ο, range from 3 × 10 -8 to 2 × 10 -6 m 2 s -3 south of the transition zone, and from 10 -7 to 10 -5 m 2 s -3 north of the transition zone. The station-averaged K T values throughout the mixed layer increase exponentially with the wind speed. The station-averaged ο values throughout the mixed layer scale with the wind stress similarity variable with a scaling factor of about 1.8 in the wind-dominated stations (epsilon approx; 1.8 ≈ 3(-κz)). The values of K T and ο are on average 10 times higher compared to the values measured at the same stations in July 2009. The results presented here constitute a unique data set giving large spatial coverage of upper ocean spring turbulence quantities. © 2012 Author(s). Article in Journal/Newspaper Northeast Atlantic Digital.CSIC (Spanish National Research Council) Las Palmas ENVELOPE(-60.674,-60.674,-62.971,-62.971) Ocean Science 8 6 945 957 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
description |
Small-scale temperature and conductivity variations have been measured in the upper 100 m of the northeast Atlantic during the STRATIPHYT-II cruise (Las Palmas-Reykjavik, 6 April-3 May 2011). The measurements were done at midday and comprised 2 to 15 vertical profiles at each station. The derived turbulent quantities show a transition between weakly-stratified (mixed layer depth, MLD, <100) and well-mixed waters (MLD > 100), which was centered at about 48°N. The temperature eddy diffusivities, K T, range from 10 -5 to 100 m 2 s -1 in the weakly-stratified stations, and range from 3 × 10 -4 to 2 × 100 m 2 s -1 in the well-mixed stations. The turbulent kinetic energy dissipation rates, ο, range from 3 × 10 -8 to 2 × 10 -6 m 2 s -3 south of the transition zone, and from 10 -7 to 10 -5 m 2 s -3 north of the transition zone. The station-averaged K T values throughout the mixed layer increase exponentially with the wind speed. The station-averaged ο values throughout the mixed layer scale with the wind stress similarity variable with a scaling factor of about 1.8 in the wind-dominated stations (epsilon approx; 1.8 ≈ 3(-κz)). The values of K T and ο are on average 10 times higher compared to the values measured at the same stations in July 2009. The results presented here constitute a unique data set giving large spatial coverage of upper ocean spring turbulence quantities. © 2012 Author(s). |
format |
Article in Journal/Newspaper |
author |
Jurado, Elena Dijkstra, H.A. Van Der Woerd, H.J. |
spellingShingle |
Jurado, Elena Dijkstra, H.A. Van Der Woerd, H.J. Microstructure observations during the spring 2011 STRATIPHYT-II cruise in the northeast Atlantic |
author_facet |
Jurado, Elena Dijkstra, H.A. Van Der Woerd, H.J. |
author_sort |
Jurado, Elena |
title |
Microstructure observations during the spring 2011 STRATIPHYT-II cruise in the northeast Atlantic |
title_short |
Microstructure observations during the spring 2011 STRATIPHYT-II cruise in the northeast Atlantic |
title_full |
Microstructure observations during the spring 2011 STRATIPHYT-II cruise in the northeast Atlantic |
title_fullStr |
Microstructure observations during the spring 2011 STRATIPHYT-II cruise in the northeast Atlantic |
title_full_unstemmed |
Microstructure observations during the spring 2011 STRATIPHYT-II cruise in the northeast Atlantic |
title_sort |
microstructure observations during the spring 2011 stratiphyt-ii cruise in the northeast atlantic |
publisher |
European Geosciences Union |
publishDate |
2012 |
url |
http://hdl.handle.net/10261/218119 https://doi.org/10.5194/os-8-945-2012 |
long_lat |
ENVELOPE(-60.674,-60.674,-62.971,-62.971) |
geographic |
Las Palmas |
geographic_facet |
Las Palmas |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
Publisher's version http://dx.doi.org/10.5194/os-8-945-2012 Sí doi:10.5194/os-8-945-2012 issn: 1812-0784 Ocean Science 8: 945- 957 (2012) http://hdl.handle.net/10261/218119 |
op_rights |
open |
op_doi |
https://doi.org/10.5194/os-8-945-2012 |
container_title |
Ocean Science |
container_volume |
8 |
container_issue |
6 |
container_start_page |
945 |
op_container_end_page |
957 |
_version_ |
1790605087028019200 |