Multi-point Correlation Scale Lengths of Solar Wind Magnetic Structures

Authors: Geoffrey Jenkins (University of Michigan), Dr. Mark Moldwin (University of Michigan)

Space weather phenomena pose substantial risks to critical infrastructure and human activities. Accurate forecasting of solar wind conditions is essential for mitigating these hazards. This study examines the correlation scale lengths of transient magnetic structures embedded within the pristine solar wind. By analyzing interplanetary magnetic field data from the ACE and WIND spacecraft, we seek to identify patterns and anomalies in magnetic field measurements. Correlation scale length is defined as the distance at which cross-correlation between the two spacecraft’s magnetic field measurements diminishes below a threshold of 0.8. Our analysis focuses on instances of disparate magnetic field measurements, such as anti-correlated Bz components, occurring amidst space weather events. By investigating these discrepancies and their associated correlation scale lengths, we aim to refine space weather models of solar wind propagation and evolution. Future research will expand the dataset to encompass additional spacecraft at the Sun-Earth L1 Lagrange point and within the terrestrial-lunar environment. Furthermore, the inclusion of plasma parameters will provide a more comprehensive characterization of solar wind magnetic structures and overall variability. Ultimately, this research will contribute to the development of advanced space weather prediction capabilities.