Arctic sea-ice diffusion from observed and simulated Lagrangian trajectories
We characterize sea-ice drift by applying a Lagrangian diffusion analysis to buoy trajectories from the International Arctic Buoy Programme (IABP) dataset and from two different models: the standalone Lagrangian sea-ice model neXtSIM and the Eulerian coupled ice–ocean model used for the TOPAZ reanal...
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ftdoajarticles:oai:doaj.org/article:9fca73c6c73b41a3a511eaee13da709c 2023-05-15T14:58:46+02:00 Arctic sea-ice diffusion from observed and simulated Lagrangian trajectories P. Rampal S. Bouillon J. Bergh E. Ólason 2016-07-01T00:00:00Z https://doi.org/10.5194/tc-10-1513-2016 https://doaj.org/article/9fca73c6c73b41a3a511eaee13da709c EN eng Copernicus Publications http://www.the-cryosphere.net/10/1513/2016/tc-10-1513-2016.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-10-1513-2016 https://doaj.org/article/9fca73c6c73b41a3a511eaee13da709c The Cryosphere, Vol 10, Iss 4, Pp 1513-1527 (2016) Environmental sciences GE1-350 Geology QE1-996.5 article 2016 ftdoajarticles https://doi.org/10.5194/tc-10-1513-2016 2022-12-31T14:44:02Z We characterize sea-ice drift by applying a Lagrangian diffusion analysis to buoy trajectories from the International Arctic Buoy Programme (IABP) dataset and from two different models: the standalone Lagrangian sea-ice model neXtSIM and the Eulerian coupled ice–ocean model used for the TOPAZ reanalysis. By applying the diffusion analysis to the IABP buoy trajectories over the period 1979–2011, we confirm that sea-ice diffusion follows two distinct regimes (ballistic and Brownian) and we provide accurate values for the diffusivity and integral timescale that could be used in Eulerian or Lagrangian passive tracers models to simulate the transport and diffusion of particles moving with the ice. We discuss how these values are linked to the evolution of the fluctuating displacements variance and how this information could be used to define the size of the search area around the position predicted by the mean drift. By comparing observed and simulated sea-ice trajectories for three consecutive winter seasons (2007–2011), we show how the characteristics of the simulated motion may differ from or agree well with observations. This comparison illustrates the usefulness of first applying a diffusion analysis to evaluate the output of modeling systems that include a sea-ice model before using these in, e.g., oil spill trajectory models or, more generally, to simulate the transport of passive tracers in sea ice. Article in Journal/Newspaper Arctic Sea ice The Cryosphere Directory of Open Access Journals: DOAJ Articles Arctic The Cryosphere 10 4 1513 1527 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 P. Rampal S. Bouillon J. Bergh E. Ólason Arctic sea-ice diffusion from observed and simulated Lagrangian trajectories |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
We characterize sea-ice drift by applying a Lagrangian diffusion analysis to buoy trajectories from the International Arctic Buoy Programme (IABP) dataset and from two different models: the standalone Lagrangian sea-ice model neXtSIM and the Eulerian coupled ice–ocean model used for the TOPAZ reanalysis. By applying the diffusion analysis to the IABP buoy trajectories over the period 1979–2011, we confirm that sea-ice diffusion follows two distinct regimes (ballistic and Brownian) and we provide accurate values for the diffusivity and integral timescale that could be used in Eulerian or Lagrangian passive tracers models to simulate the transport and diffusion of particles moving with the ice. We discuss how these values are linked to the evolution of the fluctuating displacements variance and how this information could be used to define the size of the search area around the position predicted by the mean drift. By comparing observed and simulated sea-ice trajectories for three consecutive winter seasons (2007–2011), we show how the characteristics of the simulated motion may differ from or agree well with observations. This comparison illustrates the usefulness of first applying a diffusion analysis to evaluate the output of modeling systems that include a sea-ice model before using these in, e.g., oil spill trajectory models or, more generally, to simulate the transport of passive tracers in sea ice. |
format |
Article in Journal/Newspaper |
author |
P. Rampal S. Bouillon J. Bergh E. Ólason |
author_facet |
P. Rampal S. Bouillon J. Bergh E. Ólason |
author_sort |
P. Rampal |
title |
Arctic sea-ice diffusion from observed and simulated Lagrangian trajectories |
title_short |
Arctic sea-ice diffusion from observed and simulated Lagrangian trajectories |
title_full |
Arctic sea-ice diffusion from observed and simulated Lagrangian trajectories |
title_fullStr |
Arctic sea-ice diffusion from observed and simulated Lagrangian trajectories |
title_full_unstemmed |
Arctic sea-ice diffusion from observed and simulated Lagrangian trajectories |
title_sort |
arctic sea-ice diffusion from observed and simulated lagrangian trajectories |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-1513-2016 https://doaj.org/article/9fca73c6c73b41a3a511eaee13da709c |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice The Cryosphere |
genre_facet |
Arctic Sea ice The Cryosphere |
op_source |
The Cryosphere, Vol 10, Iss 4, Pp 1513-1527 (2016) |
op_relation |
http://www.the-cryosphere.net/10/1513/2016/tc-10-1513-2016.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-10-1513-2016 https://doaj.org/article/9fca73c6c73b41a3a511eaee13da709c |
op_doi |
https://doi.org/10.5194/tc-10-1513-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
4 |
container_start_page |
1513 |
op_container_end_page |
1527 |
_version_ |
1766330892020613120 |