194 citations · 1.3k across the 31 of their papers we have counts for
31 papers
CORHEL-CME: An Interactive Tool For Modeling Solar Eruptions
Jon Linker, Tibor Torok, Cooper Downs +5
Coronal Mass Ejections (CMEs) are immense eruptions of plasma and magnetic fields that are propelled outward from the Sun, sometimes with velocities greater than 2000 km/s. They ar…
Global MHD Simulations of the Time-Dependent Corona
Roberto Lionello, Cooper Downs, Emily I. Mason +5
We describe, test, and apply a technique to incorporate full-sun, surface flux evolution into an MHD model of the global solar corona. Requiring only maps of the evolving surface f…
Bayesian Inference and Global Sensitivity Analysis for Ambient Solar Wind Prediction
Opal Issan, Pete Riley, Enrico Camporeale +1
The ambient solar wind plays a significant role in propagating interplanetary coronal mass ejections and is an important driver of space weather geomagnetic storms. A computational…
Which Upstream Solar Wind Conditions Matter Most in Predicting Bz within Coronal Mass Ejections
Pete Riley, M. A. Reiss, C. Mostl
Accurately predicting the z-component of the interplanetary magnetic field, particularly during the passage of an interplanetary coronal mass ejection (ICME), is a crucial objectiv…
Prediction and Verification of Parker Solar Probe Solar Wind Sources at 13.3 R
Samuel T. Badman, Pete Riley, Shaela I. Jones +11
Drawing connections between heliospheric spacecraft and solar wind sources is a vital step in understanding the evolution of the solar corona into the solar wind and contextualizin…
Modeling CME encounters at Parker Solar Probe with OSPREI: Dependence on photospheric and coronal conditions
Vincent E. Ledvina, Erika Palmerio, Christina Kay +2
Context: Coronal mass ejections (CMEs) are eruptions of plasma from the Sun that travel through interplanetary space and may encounter Earth. CMEs often enclose a magnetic flux rop…
Quantifying errors in 3D CME parameters derived from synthetic data using white-light reconstruction techniques
Christine Verbeke, M. Leila Mays, Christina Kay +10
(Shortened version) Current efforts in space weather forecasting of CMEs have been focused on predicting their arrival time and magnetic structure. To make predictions, methods hav…
A data-driven physics-based transport model of solar energetic particles accelerated by coronal mass ejection shocks propagating through the solar coronal and heliospheric magnetic fields
Ming Zhang, Lei Cheng, Ju Zhang +5
In an effort to develop computational tools for predicting radiation hazards from solar energetic particles (SEPs), we have created a data-driven physics-based particle transport m…
Coronal mass ejection deformation at 0.1 au observed by WISPR
Carlos R. Braga, Angelos Vourlidas, Paulett C. Liewer +3
Although coronal mass ejections (CMEs) resembling flux ropes generally expand self-similarly, deformations along their fronts have been reported in observations and simulations. We…
Unifying the Validation of Ambient Solar Wind Models
Martin A. Reiss, Karin Muglach, Richard Mullinix +18
Progress in space weather research and awareness needs community-wide strategies and procedures to evaluate our modeling assets. Here we present the activities of the Ambient Solar…
Constraining Global Coronal Models with Multiple Independent Observables
Samuel T. Badman, David H. Brooks, Nicolas Poirier +13
Global coronal models seek to produce an accurate physical representation of the Sun's atmosphere which can be used, for example, to drive space weather models. Assessing their acc…
Using Parker Solar Probe observations during the first four perihelia to constrain global magnetohydrodynamic models
Pete Riley, Roberto Lionello, Ronald M. Caplan +4
Parker Solar Probe (PSP) is providing an unprecedented view of the Sun's corona as it progressively dips closer into the solar atmosphere with each solar encounter. Each set of obs…
Energetic Proton Propagation and Acceleration Simulated for the Bastille Day Event of July 14, 2000
Matthew A. Young, Nathan A. Schwadron, Matthew Gorby +9
This work presents results from simulations of the 14 July 2000 ("Bastille Day") solar proton event. We used the Energetic Particle Radiation Environment Model (EPREM) and the CORo…
Improving solar wind forecasting using Data Assimilation
Matthew Lang, Jake Witherington, Harriet Turner +2
Data Assimilation (DA) has enabled huge improvements in the skill of terrestrial operational weather forecasting. In this study, we use a variational DA scheme with a computational…
Forecasting the Ambient Solar Wind with Numerical Models. II. An Adaptive Prediction System for Specifying Solar Wind Speed Near the Sun
Martin A. Reiss, Peter J. MacNeice, Karin Muglach +8
The ambient solar wind flows and fields influence the complex propagation dynamics of coronal mass ejections in the interplanetary medium and play an essential role in shaping Eart…
Predicting the Structure of the Solar Corona and Inner Heliosphere during Parker Solar Probe's First Perihelion Pass
Pete Riley, Cooper Downs, Jon A. Linker +3
NASA's Parker Solar Probe (Parker) spacecraft reached its first perihelion of 35.7 solar radii on November 5th, 2018. To aid in mission planning, and in anticipation of the unprece…
Solar Sources of Interplanetary Magnetic Clouds Leading to Helicity Prediction
Roger K. Ulrich, Pete Riley, T. Tran
This study identifies the solar origins of magnetic clouds that are observed at 1 AU and predicts the helical handedness of these clouds from the solar surface magnetic fields. We…
Forecasting the Arrival Time of Coronal Mass Ejections: Analysis of the CCMC CME Scoreboard
Pete Riley, Leila Mays, Jesse Andries +15
Accurate forecasting of the properties of coronal mass ejections as they approach Earth is now recognized as an important strategic objective for both NOAA and NASA. The time of ar…
The State of the Solar Wind, Magnetosphere, and Ionosphere During the Maunder Minimum
Pete Riley, Roberto Lionello, Jon A. Linker +1
Both direct observations and reconstructions from various datasets, suggest that conditions were radically different during the Maunder Minimum (MM) than during the space era. Usin…
Sun-to-Earth MHD Simulation of the 14 July 2000 "Bastille Day" Eruption
Tibor Török, Cooper Downs, Jon A. Linker +6
Solar eruptions are the main driver of space-weather disturbances at the Earth. Extreme events are of particular interest, not only because of the scientific challenges they pose,…
The Open Flux Problem
J. A. Linker, R. M. Caplan, C. Downs +9
The heliospheric magnetic field is of pivotal importance in solar and space physics. The field is rooted in the Sun's photosphere, where it has been observed for many years. Global…
Origins of the Ambient Solar Wind: Implications for Space Weather
Steven R. Cranmer, Sarah E. Gibson, Pete Riley
The Sun's outer atmosphere is heated to temperatures of millions of degrees, and solar plasma flows out into interplanetary space at supersonic speeds. This paper reviews our curre…
The Grad-Shafranov Reconstruction of Toroidal Magnetic Flux Ropes: First Applications
Qiang Hu, M. G. Linton, B. E. Wood +2
This article completes and extends a recent study of the Grad-Shafranov (GS) reconstruction in toroidal geometry, as applied to a two and a half dimensional configurations in space…
Diagnostics of Coronal Magnetic Fields Through the Hanle Effect in UV and IR Lines
N. E. Raouafi, P. Riley, S. Gibson +2
The plasma thermodynamics in the solar upper atmosphere, particularly in the corona, are dominated by the magnetic field, which controls the flow and dissipation of energy. The rel…