Supplementary material for the article published in EPSL (2025) "The extraterrestrial dust accretion rate on Earth at Dome C, Antarctica: a fresh look with 3He by G. Fénisse, D.V. Bekaert, P.-H. Blard, J. Duprat, I. Mattia, M. Genge, M.D. Suttle, O. Barres, C. Engrand, Y. Marrocchi

Files used in this study:
A. "IDP_Neve_Concordia_CRPG_MNHN_GFénisseEtAl_2025_EPSL.xlsx", a snow mass compilation from clean snow at the CONCORDIA station (Dome C, Antarctica)
B. "Calibration_of_He_concentration_inFurnace_GFénisseEtAl_2025_EPSL.xlsx", the furnace calibration for He measurements
C. "HeResults_IDPsMMs_GFénisseEtAl_2025_EPSL.xlsx", the He isotopic compositions and total masses of cosmic dust, categorized by size range, from the CONCORDIA snow
D. "ETMassFluxSynthesis_GFénisseEtAl_EPSL.xlsx", ET mass comparisons from collection, He method and CABMOD-ZoDy modeling
E. "Database_IDPs&MMs_He&Ne_GFénisseEtAl_2025_EPSL.xlsx", an exhaustive database containing all published light noble gas data (³He, ⁴He, and ²⁰Ne) measured in IDPs and MMs collected in the stratosphere and Antarctica
F. "ReferencesTable_3HeETFlux_GFénisseEtAl_2025_EPSL.xlsx", a database of light noble gas measurements in Antarctica MMs. This dataset of He vs. MM mass is used here to convert ³He concentrations into dust abundances.