Change search
ReferencesLink to record
Permanent link

Direct link
TRACMASS—A Lagrangian Trajectory Model
Stockholm University, Faculty of Science, Department of Meteorology .
Stockholm University, Faculty of Science, Department of Meteorology .
Department of Geosciences, Princeton University.
2013 (English)In: Preventive Methods for Coastal Protection: Towards the Use of Ocean Dynamics for Pollution Control / [ed] Soomere, Tarmo; Quak, Ewald, Springer, 2013, 225-249 p.Chapter in book (Refereed)
Abstract [en]

A detailed description of the Lagrangian trajectory model TRACMASS is presented. The theory behind the original scheme for steady state velocities is derived for rectangular and curvilinear grids with different vertical coordinates for the oceanic and atmospheric circulation models. Two different ways to integrate the trajectories in time in TRACMASS are presented. These different time schemes are compared by simulating inertial oscillations, which show that both schemes are sufficiently accurate not to deviate from the analytical solution.The TRACMASS are exact solutions to differential equations and can hence be integrated both forward and backward with unique solutions. Two low-order trajectory subgrid parameterizations, which are available in TRACMASS, are explained. They both enable an increase of the Lagrangian dispersion, but are, however, too simple to simulate some of the Lagrangian properties that are desirable. The mass conservation properties of TRACMASS are shown to make it possible to follow the water or air masses both forward and backward in time, which also opens up for all sorts of calculations of water/air mass exchanges as well as Lagrangian stream functions.

Place, publisher, year, edition, pages
Springer, 2013. 225-249 p.
Keyword [en]
tracmass; trajectory; numerical methods;
National Category
Oceanography, Hydrology, Water Resources
Research subject
Oceanography; Numerical Analysis
URN: urn:nbn:se:su:diva-91810DOI: 10.1007/978-3-319-00440-2_7ISBN: 978-3-319-00440-2ISBN: 978-3-319-00439-6OAI: diva2:635426
EU, FP7, Seventh Framework Programme, 217246Formas, 2008–1900
Available from: 2013-07-04 Created: 2013-07-04 Last updated: 2014-01-07Bibliographically approved

Open Access in DiVA

fulltext(3454 kB)267 downloads
File information
File name FULLTEXT01.pdfFile size 3454 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Döös, KristoferKjellsson, Joakim
By organisation
Department of Meteorology
Oceanography, Hydrology, Water Resources

Search outside of DiVA

GoogleGoogle Scholar
Total: 267 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 114 hits
ReferencesLink to record
Permanent link

Direct link