Implementing the MULTI-VP coronal model in EUHFORIA: Test case results and comparisons with the WSA coronal model
| Autor: | Rui F. Pinto, Jasmina Magdalenic, Evangelia Samara, Immanuel Christopher Jebaraj, Luciano Rodriguez, Nicolas Wijsen, Stefaan Poedts, V. Jerčić, Camilla Scolini |
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| Přispěvatelé: | Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Paris Cité (UPCité) |
| Rok vydání: | 2021 |
| Předmět: |
Sun: general
010504 meteorology & atmospheric sciences FOS: Physical sciences Boundary (topology) Astrophysics Space weather magnetohydrodynamics (MHD) 01 natural sciences Current sheet Physics - Space Physics Magnetogram 0103 physical sciences Boundary value problem Sun: heliosphere 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) 0105 earth and related environmental sciences Physics Sun: corona Astronomy and Astrophysics Geophysics solar-terrestrial relations Space Physics (physics.space-ph) Solar wind solar wind Astrophysics - Solar and Stellar Astrophysics [SDU]Sciences of the Universe [physics] 13. Climate action Space and Planetary Science Magnetohydrodynamics Heliosphere |
| Zdroj: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, 2021, 648, ⟨10.1051/0004-6361/202039325⟩ Astronomy & Astrophysics |
| ISSN: | 1432-0746 0004-6361 |
| DOI: | 10.1051/0004-6361/202039325 |
| Popis: | In this study, we focus on improving EUHFORIA (European Heliospheric Forecasting Information Asset), a recently developed 3D MHD space weather prediction tool. EUHFORIA consists of two parts, covering two spatial domains; the solar corona and the inner heliosphere. For the first part, the semi-empirical Wang-Sheeley-Arge (WSA) model is used by default, which employs the Potential Field Source Surface (PFSS) and Schatten Current Sheet (SCS) models to provide the necessary solar wind plasma and magnetic conditions above the solar surface, at 0.1 AU, that serve as boundary conditions for the inner heliospheric part. Herein, we present the first results of the implementation of an alternative coronal model in EUHFORIA, the so-called MULTI-VP model. We compared the output of the default coronal model with the output from MULTI-VP at the inner boundary of the heliospheric domain of EUHFORIA in order to understand differences between the two models, before they propagate to Earth. We also compared the performance of WSA+EUHFORIA-heliosphere and MULTI-VP+EUHFORIA-heliosphere against in situ observations at Earth. In the frame of this study, we considered two different high-speed stream cases, one during a period of low solar activity and one during a period of high solar activity. We also employed two different magnetograms, i.e., GONG and WSO. Our results show that the choice of both the coronal model and the magnetogram play an important role on the accuracy of the solar wind prediction. However, it is not clear which component plays the most important role for the modeled results obtained at Earth. A statistical analysis with an appropriate number of simulations is needed to confirm our findings. Accepted for publication in Astronomy and Astrophysics |
| Databáze: | OpenAIRE |
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