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Evolution of Small-Scale Filaments in an Adaptive Advection Model for Idealized Tracer Transport

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  • 1 Center of Mathematical Sciences, Munich University of Technology, Munich, Germany,
  • | 2 Alfred Wegener Institute for Polar and Marine Research, Potsdam, Germany
  • | 3 Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
  • | 4 Alfred Wegener Institute for Polar and Marine Research, Potsdam, Germany
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Abstract

The formation of small-scale filaments in a novel two-dimensional adaptive tracer transport model is investigated. The numerical model is based on a semi-Lagrangian advection scheme, and an adaptively and locally refined triangular mesh. The adaptive modeling approach allows very high local resolution, showing fine-grained filamentation under the influence of gradients in the wind field. Wind data for the tracer transport experiment are taken from the high-resolution regional climate model for the Arctic atmosphere, HIRHAM. The influence of horizontal advection model resolution and varying wind data resolution has been investigated.

Corresponding author address: Dr. Jorn Behrens, Munich University of Technology, D-80290 Munich, Germany.

Email: behrens@mathematik.tu-muenchen.de

Abstract

The formation of small-scale filaments in a novel two-dimensional adaptive tracer transport model is investigated. The numerical model is based on a semi-Lagrangian advection scheme, and an adaptively and locally refined triangular mesh. The adaptive modeling approach allows very high local resolution, showing fine-grained filamentation under the influence of gradients in the wind field. Wind data for the tracer transport experiment are taken from the high-resolution regional climate model for the Arctic atmosphere, HIRHAM. The influence of horizontal advection model resolution and varying wind data resolution has been investigated.

Corresponding author address: Dr. Jorn Behrens, Munich University of Technology, D-80290 Munich, Germany.

Email: behrens@mathematik.tu-muenchen.de

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