Assessing the Performance of EUHFORIA Modeling the Background Solar Wind

Jurgen Hinterreiter, Jasmina Magdalenic, Manuela Temmer, Christine Verbeke, Immanuel Christopher Jebaraj, Evangelia Samara, Eleanna Asvestari, Stefaan Poedts, Jens Pomoell, Emilia Kilpua, Luciano Rodriguez, Camilla Scolini, Alexey Isavnin

Research output: Contribution to journalArticleScientificpeer-review

Abstract

In order to address the growing need for more accurate space-weather predictions, a new model named EUHFORIA (EUropean Heliospheric FORecasting Information Asset) was recently developed. We present the first results of the performance assessment for the solar-wind modeling with EUHFORIA and identify possible limitations of its present setup. Using the basic EUHFORIA 1.0.4 model setup with the default input parameters, we modeled background solar wind (no coronal mass ejections) and compared the obtained results with Advanced Composition Explorer (ACE) in-situ measurements. For the purposes of statistical study we developed a technique of combining daily EUHFORIA runs into continuous time series. The combined time series were derived for the years 2008 (low solar activity) and 2012 (high solar activity), from which in-situ speed and density profiles were extracted. We find for the low-activity phase a better match between model results and observations compared to the high-activity time interval considered. The quality of the modeled solar-wind parameters is found to be rather variable. Therefore, to better understand the results obtained we also qualitatively inspected characteristics of coronal holes, i.e. the sources of the studied fast streams. We discuss how different characteristics of the coronal holes and input parameters to EUHFORIA influence the modeled fast solar wind, and suggest possibilities for the improvement of the model.
Original languageEnglish
Article number170
JournalSolar Physics
Volume294
Issue number12
Number of pages19
ISSN0038-0938
DOIs
Publication statusPublished - 5 Dec 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 115 Astronomy, Space science

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