Determination of diapycnal diffusion rates in the upper thermocline in the North Atlantic Ocean using sulfur hexafluoride
The apparent diapycnal diffusivity below the wind-driven surface mixed layer of the ocean was determined in an anticyclonic eddy in the eastern North Atlantic using sulfur hexafluoride (SF6) tracer data collected in June 1998. In this tracer experiment the downward penetration of SF6 was measured fo...
Published in: | Journal of Geophysical Research |
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AMER GEOPHYSICAL UNION
2005
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ftuisanist:oai:scholarworks.unist.ac.kr:201301/8212 2023-05-15T17:29:09+02:00 Determination of diapycnal diffusion rates in the upper thermocline in the North Atlantic Ocean using sulfur hexafluoride Kim, DO Lee, K Choi, Sung-Deuk Kang, HS Zhang, JZ Chang, YS 2005-10 https://scholarworks.unist.ac.kr/handle/201301/8212 https://doi.org/10.1029/2004JC002835 http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=28844479784 ?????? unknown AMER GEOPHYSICAL UNION JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, v.110, no.C10, pp.1 - 9 0148-0227 https://scholarworks.unist.ac.kr/handle/201301/8212 1139 17967 2-s2.0-28844479784 000232687900002 doi:10.1029/2004JC002835 http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=28844479784 ARTICLE ART 2005 ftuisanist https://doi.org/10.1029/2004JC002835 2022-05-15T05:22:01Z The apparent diapycnal diffusivity below the wind-driven surface mixed layer of the ocean was determined in an anticyclonic eddy in the eastern North Atlantic using sulfur hexafluoride (SF6) tracer data collected in June 1998. In this tracer experiment the downward penetration of SF6 was measured for 3 weeks following the deliberate injection of SF6 in the surface mixed layer. The resulting data were used to constrain the one-dimensional Fickian diffusion model to estimate the diapycnal diffusivity. The model also includes the lateral diffusion component so that it can more accurately represent the time evolution of the SF6 concentrations along the isopycnal surface. This affects the estimation of the diapycnal diffusivity. For the upper thermocline immediately below the surface mixed layer we estimated the diapycnal diffusivity for the 3 week period as 0.3 +/- 0.2 cm(2) s(-1) at a buoyancy frequency of 8.2 cph. close 16 6 Article in Journal/Newspaper North Atlantic ScholarWorks@UNIST (Ulsan National Institute of Science and Technology) Journal of Geophysical Research 110 C10 |
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Open Polar |
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ScholarWorks@UNIST (Ulsan National Institute of Science and Technology) |
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ftuisanist |
language |
unknown |
description |
The apparent diapycnal diffusivity below the wind-driven surface mixed layer of the ocean was determined in an anticyclonic eddy in the eastern North Atlantic using sulfur hexafluoride (SF6) tracer data collected in June 1998. In this tracer experiment the downward penetration of SF6 was measured for 3 weeks following the deliberate injection of SF6 in the surface mixed layer. The resulting data were used to constrain the one-dimensional Fickian diffusion model to estimate the diapycnal diffusivity. The model also includes the lateral diffusion component so that it can more accurately represent the time evolution of the SF6 concentrations along the isopycnal surface. This affects the estimation of the diapycnal diffusivity. For the upper thermocline immediately below the surface mixed layer we estimated the diapycnal diffusivity for the 3 week period as 0.3 +/- 0.2 cm(2) s(-1) at a buoyancy frequency of 8.2 cph. close 16 6 |
format |
Article in Journal/Newspaper |
author |
Kim, DO Lee, K Choi, Sung-Deuk Kang, HS Zhang, JZ Chang, YS |
spellingShingle |
Kim, DO Lee, K Choi, Sung-Deuk Kang, HS Zhang, JZ Chang, YS Determination of diapycnal diffusion rates in the upper thermocline in the North Atlantic Ocean using sulfur hexafluoride |
author_facet |
Kim, DO Lee, K Choi, Sung-Deuk Kang, HS Zhang, JZ Chang, YS |
author_sort |
Kim, DO |
title |
Determination of diapycnal diffusion rates in the upper thermocline in the North Atlantic Ocean using sulfur hexafluoride |
title_short |
Determination of diapycnal diffusion rates in the upper thermocline in the North Atlantic Ocean using sulfur hexafluoride |
title_full |
Determination of diapycnal diffusion rates in the upper thermocline in the North Atlantic Ocean using sulfur hexafluoride |
title_fullStr |
Determination of diapycnal diffusion rates in the upper thermocline in the North Atlantic Ocean using sulfur hexafluoride |
title_full_unstemmed |
Determination of diapycnal diffusion rates in the upper thermocline in the North Atlantic Ocean using sulfur hexafluoride |
title_sort |
determination of diapycnal diffusion rates in the upper thermocline in the north atlantic ocean using sulfur hexafluoride |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2005 |
url |
https://scholarworks.unist.ac.kr/handle/201301/8212 https://doi.org/10.1029/2004JC002835 http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=28844479784 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, v.110, no.C10, pp.1 - 9 0148-0227 https://scholarworks.unist.ac.kr/handle/201301/8212 1139 17967 2-s2.0-28844479784 000232687900002 doi:10.1029/2004JC002835 http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=28844479784 |
op_doi |
https://doi.org/10.1029/2004JC002835 |
container_title |
Journal of Geophysical Research |
container_volume |
110 |
container_issue |
C10 |
_version_ |
1766122763267866624 |