ElEvoHI: a novel CME prediction tool for heliospheric imaging combining an elliptical front with drag-based model fitting

Abstract

In this study, we present a new method for forecasting arrival times and speeds of coronal mass ejections (CMEs) at any location in the inner heliosphere. This new approach enables the adoption of a highly flexible geometrical shape for the CME front with an adjustable CME angular width and an adjustable radius of curvature of its leading edge, i.e. the assumed geometry is elliptical. Using, as input, STEREO heliospheric imager (HI) observations, a new elliptic conversion (ElCon) method is introduced and combined with the use of drag-based model (DBM) fitting to quantify the deceleration or acceleration experienced by CMEs during propagation. The result is then used as input for the Ellipse Evolution Model (ElEvo). Together, ElCon, DBM fitting, and ElEvo form the novel ElEvoHI forecasting utility. To demonstrate the applicability of ElEvoHI, we forecast the arrival times and speeds of 21 CMEs remotely observed from STEREO/HI and compare them to in situ arrival times and speeds at 1 AU. Compared to the commonly used STEREO/HI fitting techniques (Fixed-$\Phi$, Harmonic Mean, and Self-similar Expansion fitting), ElEvoHI improves the arrival time forecast by about 2 hours to $\pm 6.5$ hours and the arrival speed forecast by $\approx 250$ km s${}^{-1}$ to $\pm 53$ km s${}^{-1}$, depending on the ellipse aspect ratio assumed. In particular, the remarkable improvement of the arrival speed prediction is potentially beneficial for predicting geomagnetic storm strength at Earth.

arXiv commentaccepted for publication in ApJ

References in corpus (18)

• Observations of an extreme storm in interplanetary space caused by successive coronal mass ejections
• Strong coronal channelling and interplanetary evolution of a solar storm up to Earth and Mars
• Ensemble modeling of CMEs using the WSA-ENLIL+Cone model
• Deriving the radial distances of wide coronal mass ejections from elongation measurements in the heliosphere - Application to CME-CME interaction
• Connecting speeds, directions and arrival times of 22 coronal mass ejections from the Sun to 1 AU
• Characteristics of kinematics of a coronal mass ejection during the 2010 August 1 CME-CME interaction event
• Influence of the ambient solar wind flow on the propagation behavior of interplanetary CMEs
• Accuracy and Limitations of Fitting and Stereoscopic Methods to Determine the Direction of Coronal Mass Ejections from Heliospheric Imagers Observations
• Speeds and arrival times of solar transients approximated by self-similar expanding circular fronts
• Heliospheric Propagation of Coronal Mass Ejections: Drag-Based Model Fitting
• Interplanetary Propagation Behavior of the Fast Coronal Mass Ejection from 23 July 2012
• CME propagation: Where does solar wind drag take over?
• Full Halo Coronal Mass Ejections: Arrival at the Earth
• Estimating arrival time of Earth-directed CMEs at \textit{in-situ} spacecraft using COR & HI observations from STEREO
• Arrival time calculation for interplanetary coronal mass ejections with circular fronts and application to STEREO observations of the 2009 February 13 eruption
• Combined Multipoint Remote and In Situ Observations of the Asymmetric Evolution of a Fast Solar Coronal Mass Ejection
• Effect of Solar Wind Drag on the Determination of the Properties of Coronal Mass Ejections from Heliospheric Images
• Assessing the Constrained Harmonic Mean Method for Deriving the Kinematics of ICMEs with a Numerical Simulation

Cited by in corpus (30)

• Forward modeling of coronal mass ejection flux ropes in the inner heliosphere with 3DCORE
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• A STEREO Survey of Magnetic Cloud Coronal Mass Ejections Observed at Earth in 2008--2012
• In situ multi-spacecraft and remote imaging observations of the first CME detected by Solar Orbiter and BepiColombo
• CME dynamics using STEREO & LASCO observations: the relative importance of Lorentz forces and solar wind drag
• Ensemble Prediction of a Halo Coronal Mass Ejection Using Heliospheric Imagers
• Probabilistic Drag-Based Ensemble Model (DBEM) Evaluation for Heliospheric Propagation of CMEs
• Prediction of Geomagnetic Storm Strength from Inner Heliospheric In Situ Observations
• Forecasting the Ambient Solar Wind with Numerical Models: I. On the Implementation of an Operational Framework
• Modeling the thermodynamic evolution of Coronal Mass Ejections (CMEs) using their kinematics
• Development of a coronal mass ejection arrival time forecasting system using interplanetary scintillation observations
• Eruptive Event Generator Based on the Gibson-Low Magnetic Configuration
• Full velocities and propagation directions of coronal mass ejections inferred from simultaneous full-disk imaging and Sun-as-a-star spectroscopic observations
• Multipoint study of successive coronal mass ejections driving moderate disturbances at 1 AU
• Coronal mass ejection deformation at 0.1 au observed by WISPR
• Modeling Interplanetary Expansion and Deformation of CMEs with ANTEATR-PARADE I: Relative Contribution of Different Forces
• Propagating Conditions and the Time of ICMEs Arrival: A Comparison of the Effective Acceleration Model with ENLIL and DBEM Models
• Drag-based CME modeling with heliospheric images incorporating frontal deformation: ELEvoHI 2.0
• Parameter Distributions for the Drag-Based Modeling of CME Propagation
• CMEs in the Heliosphere: III. A Statistical Analysis of the Kinematic Properties Derived from Stereoscopic Geometrical Modelling Techniques Applied to CMEs Detected in the Heliosphere from 2008 to 2014 by STEREO/HI-1
• Multi-spacecraft Observations of the Coronal and Interplanetary Evolution of a Solar Eruption Associated with Two Active Regions
• Improving the Arrival Time Estimates of Coronal Mass Ejections by Using Magnetohydrodynamic Ensemble Modeling, Heliospheric Imager data, and Machine Learning
• Internal magnetic field structures observed by PSP/WISPR in a filament related coronal mass ejection
• Predicting the Time-of-Arrival of Coronal Mass Ejections at Earth From Heliospheric Imaging Observations
• Quantifying the uncertainty in CME kinematics derived from geometric modelling of Heliospheric Imager data
• Tracking and Validating ICMEs Propagating Toward Mars Using STEREO Heliospheric Imagers Combined With Forbush Decreases Detected by MSL/RAD
• Predicting CMEs using ELEvoHI with STEREO-HI beacon data
• Space weather: the solar perspective -- an update to Schwenn (2006)
• A catalogue of observed geo-effective CME/ICME characteristics
• Formation of Coronal Mass Ejection and Post-eruption Flow of Solar Wind on 2010 August 18 event