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Solar wind modeling with the Alfvén Wave Solar atmosphere Model driven by HMI-based Near-Real-Time maps by the National Solar Observatory
  • +6
  • Nishtha Sachdeva,
  • Ward B Manchester,
  • Igor Sokolov,
  • Zhenguang Huang,
  • Alexander Pevtsov,
  • Luca Bertello,
  • Alexei A Pevtsov,
  • Gabor Toth,
  • Bart Van Der Holst
Nishtha Sachdeva
Department of Climate and Space Sciences and Engineering, University of Michigan

Corresponding Author:nishthas@umich.edu

Author Profile
Ward B Manchester
Department of Climate and Space Sciences and Engineering, University of Michigan
Igor Sokolov
Department of Climate and Space Sciences and Engineering, University of Michigan
Zhenguang Huang
Department of Climate and Space Sciences and Engineering, University of Michigan
Alexander Pevtsov
National Solar Observatory
Luca Bertello
National Solar Observatory
Alexei A Pevtsov
National Solar Observatory
Gabor Toth
Department of Climate and Space Sciences and Engineering, University of Michigan
Bart Van Der Holst
Department of Climate and Space Sciences and Engineering, University of Michigan

Abstract

We explore model performance for the Alfvén Wave Solar atmosphere Model (AWSoM) with near-real-time (NRT) synoptic maps of the photospheric vector magnetic field. These maps, produced by assimilating data from the Helioseismic Magnetic Imager (HMI) onboard the Solar Dynamics Observatory (SDO), use a different method developed at the National Solar Observatory (NSO) to provide a near contemporaneous source of data to drive numerical models. Here, we apply these NSO-HMI-NRT maps to simulate three Carrington rotations (CRs): 2107-2108 (centered on 2011/03/07 20:12 CME event), 2123 (integer CR) and 2218-2219 (centered on 2019/07/2 solar eclipse), which together cover a wide range of activity level for solar cycle 24. We show simulation results, which reproduce both extreme ultraviolet emission (EUV) from the low corona while simultaneously matching in situ observations at 1 au as well as quantify the total unsigned open magnetic flux from these maps.