[Submitted on 30 Nov 2025 (
), last revised 10 Apr 2026 (this version, v2)]
Title:A robust empirical relationship between speed and turbulence energy in the near-Earth solar wind
View a PDF of the paper titled A robust empirical relationship between speed and turbulence energy in the near-Earth solar wind, by Rohit Chhiber and 4 other authors
Abstract:The connection between turbulence and solar-wind acceleration, long known in space physics, is further developed in this Letter by establishing a robust empirical law that relates the bulk-flow speed to the magnetohydrodynamic-scale fluctuation energy in the plasma. The model is based on analysis of twenty-five years of near-Earth observations by NASA's Advanced Composition Explorer. It provides a simple way to estimate turbulence energy from low-resolution speed data -- a practical approach that may be of utility when high-resolution measurements or advanced turbulence models are unavailable. Potential heliospheric applications include space-weather forecasting operations, remote imaging datasets, and energetic-particle transport models that require turbulence amplitudes to specify diffusion parameters.
Submission history
From: Rohit Chhiber [
]
Sun, 30 Nov 2025 17:07:32 UTC (2,459 KB)
[v2]
Fri, 10 Apr 2026 20:25:52 UTC (6,198 KB)