scholarly journals The Space Weather Modeling Framework Goes Open Access

Eos ◽  
2021 ◽  
Vol 102 ◽  
Author(s):  
Tuija Pulkkinen ◽  
Tamas Gombosi ◽  
Aaron Ridley ◽  
Gabor Toth ◽  
Shasha Zou

A versatile suite of computational models, already used to forecast magnetic storms and potential power grid and telecommunications disruptions, is preparing to welcome a larger group of users.

2018 ◽  
Vol 177 ◽  
pp. 160-168 ◽  
Author(s):  
Daniel T. Welling ◽  
Gabor Toth ◽  
Vania K. Jordanova ◽  
Yiqun Yu

Author(s):  
Tamas Gombosi ◽  
Gabor Toth ◽  
Igor Sokolov ◽  
Ward Manchester ◽  
Aaron Ridley ◽  
...  

2020 ◽  
Author(s):  
Tamas Gombosi ◽  

<p>The last decade has truly witnessed the rise of the machine age. The enormous expansion of technology that can generate and manipulate massive amounts of information has transformed all aspects of society. Missions such as SDO and MMS, and numerical models such as the Space Weather Modeling Framework (SWMF) are now routinely generating terabytes of science data, far beyond what can be analyzed directly by humans. Fortunately, concurrent with this explosion in information has come the development of powerful capabilities, such as machine learning (ML) and artificial intelligence (AI), that can retrieve revolutionary new understanding and utility from the massive data sets.<span> </span></p><p><span>SOLSTICE (Solar Storms and Terrestrial Impacts Center) is a recently selected NASA/NSF DRIVE Center. It</span> will serve as the vanguard for developing and applying ML methods, which will then raise the capabilities of the entire community. We will combine next generation ML technology with our world-leading numerical models and the exquisite data from the space missions to make breakthrough advances in Heliophysics understanding and space weather capabilities, and then transition our technology to the CCMC for the benefit of all.</p><p>We use ML to attack Grand Challenge Problems that cover the major aspects of space weather science: (i) use interpretable deep learning models, archived solar observations and high-performance physics-based simulations to identify the onset mechanism of solar flares and coronal mass ejections; and (ii) use high-cadence observations and physics-based feature learning to predict solar storms many hours before eruption, training time-to-event models to predict event times and flare magnitudes using innovative machine learning techniques.</p>


2020 ◽  
Author(s):  
Norah Kaggwa Kwagala ◽  
Michael Hesse ◽  
Therese M. Jorgensen ◽  
Paul Tenfjord ◽  
Cecilia Norgren ◽  
...  

<p><span>This study investigates the effect of selecting different simulation configurations of the Space Weather Modeling Framework (SWMF) on the predictions of ground magnetic perturbations. A historic geomagnetic storm, the St. Patrick Storm 2015, is simulated with several different model configurations. The objective is to investigate how the different configurations affect the prediction performance regarding ground magnetic perturbations. For each simulation, the modeled ground magnetic perturbations are compared to the measured perturbations from several ground magnetometer stations located at sub-auroral, auroral and polar cap latitudes. Among the magnetometer stations are the Norwegian and Greenland magnetometer chains. The comparison is based on metrics for both <em>ΔB</em> </span><span>and <em>dB/dt</em></span><span>. The SWMF configurations investigated include variations in grid resolution and integration schemes for the MHD equations, and different settings for the inner magnetosphere, the ionosphere electrodynamics, and the magnetosphere-ionosphere coupling. </span></p>


Space Weather ◽  
2008 ◽  
Vol 6 (3) ◽  
pp. n/a-n/a ◽  
Author(s):  
H. Wang ◽  
A. J. Ridley ◽  
H. Lühr

2008 ◽  
Vol 4 (S257) ◽  
pp. 391-398 ◽  
Author(s):  
Noé Lugaz ◽  
Ilia I. Roussev ◽  
Igor V. Sokolov

AbstractWe discuss how some coronal mass ejections (CMEs) originating from the western limb of the Sun are associated with space weather effects such as solar energetic particles (SEPs), shocks or geo-effective ejecta at Earth. We focus on the August 24, 2002 coronal mass ejection, a fast (~2000 km s−1) eruption originating from W81. Using a three-dimensional magneto-hydrodynamic simulation of this ejection with the Space Weather Modeling Framework (SWMF), we show how a realistic initiation mechanism enables us to study the deflection of the CME in the corona and the heliosphere. Reconnection of the erupting magnetic field with that of neighboring streamers and active regions modify the solar connectivity of the field lines connecting to Earth and can also partly explain the deflection of the eruption during the first tens of minutes. Comparing the results at 1 AU of our simulation with observations by the ACE spacecraft, we find that the simulated shock does not reach Earth, but has a maximum angular span of about 120°, and reaches 35° West of Earth in 58 hours. We find no significant deflection of the CME and its associated shock wave in the heliosphere, and we discuss the consequences for the shock angular span.


Space Weather ◽  
2018 ◽  
Vol 16 (9) ◽  
pp. 1330-1347 ◽  
Author(s):  
S. K. Morley ◽  
D. T. Welling ◽  
J. R. Woodroffe

Author(s):  
Gábor Tóth ◽  
Igor V. Sokolov ◽  
Tamas I. Gombosi ◽  
David R. Chesney ◽  
C. Robert Clauer ◽  
...  

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