Comparison of spatial density vs. altitude for objects > 1 mm (left) and > 1 cm (right). Red shaded area: MASTER-8 model. Blue shaded area: ORDEM 3.1 model. Black dots: our MASTER/ORDEM-scaled approximation. MASTER-8 and ORDEM 3.1 data digitized from Horstmann et al. (2021), their Fig. 1 (top panels). The scaling factors (0.5× for > 3 mm, 30× for < 3 mm) successfully reproduce ORDEM’s enhanced small particle population in critical size regimes while maintaining MASTER’s spatial structure.