Stirring in the global surface ocean
[1] Global variations of stirring in the surface ocean are quantified using finite-time Lyapunov exponents (FTLEs) calculated from currents derived from satellite altimetry. It is shown that the stirring is highly non-uniform, and the probability distribution functions (PDFs) of the FTLEs are broad,...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.539.2050 2023-05-15T13:32:25+02:00 Stirring in the global surface ocean Darryn W. Waugh Edward R. Abraham The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.2050 http://www.jhu.edu/~dwaugh1/papers/Waugh_Abraham_GRL2008.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.2050 http://www.jhu.edu/~dwaugh1/papers/Waugh_Abraham_GRL2008.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.jhu.edu/~dwaugh1/papers/Waugh_Abraham_GRL2008.pdf ocean Geophys. Res. Lett 35 L20605 doi 10.1029 text ftciteseerx 2016-01-08T10:57:06Z [1] Global variations of stirring in the surface ocean are quantified using finite-time Lyapunov exponents (FTLEs) calculated from currents derived from satellite altimetry. It is shown that the stirring is highly non-uniform, and the probability distribution functions (PDFs) of the FTLEs are broad, asymmetric, and have long high-stretch tails. The characteristics of the PDFs vary with mesoscale activity and integration time: There are larger values and broader PDFs in regions of high strain rates and eddy kinetic energy (EKE), e.g., western boundary currents and the Antarctic Circumpolar Current, and for shorter integration times. The PDFs have a near-universal relationship with the mean strain of a region, and are reasonably well fit by Weibull distributions. The above variations in the stirring may help our understanding of the distribution and spatial heterogeneities of biogeochemical tracers, and raise the possibility of developing a parameterization of the stirring based on the, easily-calculated, EKE. Citation: Waugh Text Antarc* Antarctic Unknown Antarctic The Antarctic Waugh ENVELOPE(-64.111,-64.111,-65.522,-65.522) |
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English |
topic |
ocean Geophys. Res. Lett 35 L20605 doi 10.1029 |
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ocean Geophys. Res. Lett 35 L20605 doi 10.1029 Darryn W. Waugh Edward R. Abraham Stirring in the global surface ocean |
topic_facet |
ocean Geophys. Res. Lett 35 L20605 doi 10.1029 |
description |
[1] Global variations of stirring in the surface ocean are quantified using finite-time Lyapunov exponents (FTLEs) calculated from currents derived from satellite altimetry. It is shown that the stirring is highly non-uniform, and the probability distribution functions (PDFs) of the FTLEs are broad, asymmetric, and have long high-stretch tails. The characteristics of the PDFs vary with mesoscale activity and integration time: There are larger values and broader PDFs in regions of high strain rates and eddy kinetic energy (EKE), e.g., western boundary currents and the Antarctic Circumpolar Current, and for shorter integration times. The PDFs have a near-universal relationship with the mean strain of a region, and are reasonably well fit by Weibull distributions. The above variations in the stirring may help our understanding of the distribution and spatial heterogeneities of biogeochemical tracers, and raise the possibility of developing a parameterization of the stirring based on the, easily-calculated, EKE. Citation: Waugh |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Darryn W. Waugh Edward R. Abraham |
author_facet |
Darryn W. Waugh Edward R. Abraham |
author_sort |
Darryn W. Waugh |
title |
Stirring in the global surface ocean |
title_short |
Stirring in the global surface ocean |
title_full |
Stirring in the global surface ocean |
title_fullStr |
Stirring in the global surface ocean |
title_full_unstemmed |
Stirring in the global surface ocean |
title_sort |
stirring in the global surface ocean |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.2050 http://www.jhu.edu/~dwaugh1/papers/Waugh_Abraham_GRL2008.pdf |
long_lat |
ENVELOPE(-64.111,-64.111,-65.522,-65.522) |
geographic |
Antarctic The Antarctic Waugh |
geographic_facet |
Antarctic The Antarctic Waugh |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
http://www.jhu.edu/~dwaugh1/papers/Waugh_Abraham_GRL2008.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.2050 http://www.jhu.edu/~dwaugh1/papers/Waugh_Abraham_GRL2008.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766026836660191232 |