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An Open Source Flux Transport Model

Presentation #125.19 in the session General Topics: Solar — Poster Session.

Published onOct 20, 2022
An Open Source Flux Transport Model

The NASA-NSF sponsored Space Weather with Quantified Uncertainty (SWQU) project’s main objective is to develop a data-driven, time-dependent, open source model of the solar corona and heliosphere.

One key component of this SWQU effort is using a data-assimilation flux transport model to generate an ensemble of synchronic radial magnetic field maps as boundary conditions for the coronal field model. To accomplish this goal, we are developing a new Open Source Flux Transport (OFT) software suite. While there are a number of established flux transport models in the community, OFT is distinguished from many of these efforts in 3 key attributes: (1) It is based on modern computing techniques that will allow many realizations to be rapidly computed on multi-core systems and/or GPUs, (2) it is designed to be easily extensible, and (3) OFT will be released as an open source project.

OFT consists of two main software packages: 1) OFTpy: a python package for data acquisition, database organization, and Carrington map processing, and 2) High-Performance Flux Transport (HipFT): a modular, GPU-accelerated Fortran code for modeling surface flux transport with data assimilation.

Here, we present the current state of the OFT project, key features and methods of OFTpy and HipFt, and real-world examples of data-assimilation and flux transport with HipFT. Validation and performance tests are also shown, including comparisons to the established flux transport model AFT.

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