2003: Lagrangian velocity distributions in a high-resolution numerical simulation of the North Atlantic
The statistical properties of Lagrangian velocities in a high-resolution numerical simulation of the North Atlantic Ocean are analyzed and discussed in the framework of particle dispersion parameterizations. Consistent with previous analyses of float trajectories, the modeled velocity distribution i...
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.2200 http://www.o3d.org/abracco/jaot03.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.570.2200 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.570.2200 2023-05-15T17:29:28+02:00 2003: Lagrangian velocity distributions in a high-resolution numerical simulation of the North Atlantic Annalisa Bracco Eric P. Chassignet Zulema D. Garraffo The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.2200 http://www.o3d.org/abracco/jaot03.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.2200 http://www.o3d.org/abracco/jaot03.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.o3d.org/abracco/jaot03.pdf text ftciteseerx 2016-01-08T12:29:29Z The statistical properties of Lagrangian velocities in a high-resolution numerical simulation of the North Atlantic Ocean are analyzed and discussed in the framework of particle dispersion parameterizations. Consistent with previous analyses of float trajectories, the modeled velocity distribution is shown to be non-Gaussian, both at the surface and at 1500 m. These results can have significant implications on oceanographic research, as they suggest that current parameterizations of particle dispersion by linear stochastic processes or eddy-diffusivity approaches may be incorrect, since they assume Gaussian velocity distributions. The results also indicate the need for empirical parameterizations of particle dispersion based on nonlinear stochastic processes. It is shown that, even for a truly non-Gaussian dataset, a Gaussian probability distribution function can be spuriously recovered when the sampling density is too low. The best compromise between data sampling and space averaging when a limited amount of data are available, as is the case in most field observations, is then identified. 1. Text North Atlantic Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
The statistical properties of Lagrangian velocities in a high-resolution numerical simulation of the North Atlantic Ocean are analyzed and discussed in the framework of particle dispersion parameterizations. Consistent with previous analyses of float trajectories, the modeled velocity distribution is shown to be non-Gaussian, both at the surface and at 1500 m. These results can have significant implications on oceanographic research, as they suggest that current parameterizations of particle dispersion by linear stochastic processes or eddy-diffusivity approaches may be incorrect, since they assume Gaussian velocity distributions. The results also indicate the need for empirical parameterizations of particle dispersion based on nonlinear stochastic processes. It is shown that, even for a truly non-Gaussian dataset, a Gaussian probability distribution function can be spuriously recovered when the sampling density is too low. The best compromise between data sampling and space averaging when a limited amount of data are available, as is the case in most field observations, is then identified. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Annalisa Bracco Eric P. Chassignet Zulema D. Garraffo |
spellingShingle |
Annalisa Bracco Eric P. Chassignet Zulema D. Garraffo 2003: Lagrangian velocity distributions in a high-resolution numerical simulation of the North Atlantic |
author_facet |
Annalisa Bracco Eric P. Chassignet Zulema D. Garraffo |
author_sort |
Annalisa Bracco |
title |
2003: Lagrangian velocity distributions in a high-resolution numerical simulation of the North Atlantic |
title_short |
2003: Lagrangian velocity distributions in a high-resolution numerical simulation of the North Atlantic |
title_full |
2003: Lagrangian velocity distributions in a high-resolution numerical simulation of the North Atlantic |
title_fullStr |
2003: Lagrangian velocity distributions in a high-resolution numerical simulation of the North Atlantic |
title_full_unstemmed |
2003: Lagrangian velocity distributions in a high-resolution numerical simulation of the North Atlantic |
title_sort |
2003: lagrangian velocity distributions in a high-resolution numerical simulation of the north atlantic |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.2200 http://www.o3d.org/abracco/jaot03.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
http://www.o3d.org/abracco/jaot03.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.2200 http://www.o3d.org/abracco/jaot03.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766123604420853760 |