In this section
@article{Reiff:2026:10.1029/2026sw005102,
author = {Reiff, PH and Chepuri, S and Liebenthal, J and Petrinec, S and Schwartz, S and Russell, CT},
doi = {10.1029/2026sw005102},
journal = {Space Weather},
title = {CrossCorrelations of Solar Wind Parameters Using Monitoring Spacecraft},
url = {http://dx.doi.org/10.1029/2026sw005102},
volume = {24},
year = {2026}
}
TY - JOUR
AB - <jats:title>Abstract</jats:title> <jats:p> Space weather predictive modeling currently utilizes realtime data from the spacecraft ACE and DSCOVR, with SOLAR1 and IMAP recently online. This study assesses whether DSCOVR solar wind plasma and interplanetary magnetic field (IMF) data exhibit largescale discrepancies from the corresponding ACE data, and if so, whether these discrepancies can be accounted for in predictive models. We chose several monthlong intervals of ACE and DSCOVR when they were maximally separated in Y location and separately in <jats:italic>X</jats:italic> location. In general, DSCOVR measurements of solar wind density, velocity and magnetic field magnitude correlate quite well with ACE. However, although the measured IMF magnitude is essentially identical between the two platforms, the various IMF components show significant differences, particularly in <jats:italic>B</jats:italic> <jats:sub>ZGSE</jats:sub> . The data frequently display a significant (10–20 min) time offset between the two sets of measurements, consistent with the plasma structures being aligned with the Parker spiral. Comparison with MMS data taken in the solar wind confirm this variation from ballistic timing. Thus, space weather predicted by models relying on L1 monitors may be significantly impacted, representing a fundamental uncertainty in the prediction accuracy. Our results suggest that for the most accurate estimate of the IMF reaching the magnetopause, modelers should choose the spacecraft which is closest to the Sun/Earth line (−20 < <jats:italic>Y</jats:italic> <jats:sub>GSE</jats:sub> < 10 R <jats:sub>E</jats:sub>
AU - Reiff,PH
AU - Chepuri,S
AU - Liebenthal,J
AU - Petrinec,S
AU - Schwartz,S
AU - Russell,CT
DO - 10.1029/2026sw005102
PY - 2026///
SN - 1542-7390
TI - CrossCorrelations of Solar Wind Parameters Using Monitoring Spacecraft
T2 - Space Weather
UR - http://dx.doi.org/10.1029/2026sw005102
UR - https://doi.org/10.1029/2026sw005102
VL - 24
ER -