A note on "Constraints on deep-seated zonal winds inside Jupiter and Saturn"

TL;DR

This paper critiques previous constraints on deep-seated zonal winds in Jupiter and Saturn, arguing that such constraints depend heavily on assumed internal structures and are not universally applicable.

Contribution

It highlights that constraints on the depth of planetary winds are model-dependent and may not be as definitive as previously thought.

Findings

Constraints vary with different internal structure models

Kinematic analysis alone cannot definitively determine wind depth

Previous constraints may not be universally valid

Abstract

Liu et al. 2008 discuss an important consideration for models of zonal winds deep within giant planets. However, the constraints they propose for the depth of the winds are based on their prescriptions for the internal structures of the magnetic field and zonal winds. The same kinematic analysis applied to other plausible configurations would produce no constraint on the depth to which the winds extend.