Physical mechanism linking Venusian thermal variability to cloud and atmospheric dynamics

Establish the physical mechanism linking long-term variability in Venus’s middle-atmospheric temperatures to changes in cloud properties, atmospheric dynamics, and photochemistry.

Background

The paper discusses temporal temperature variability in Venus’s middle atmosphere and relates it to changes in cloud UV albedo and zonal winds near the cloud tops. These observations suggest coupling among atmospheric dynamics, cloud microphysics, and photochemistry, but the causal mechanism remains unresolved. The problem is included because identifying this mechanism is necessary for explaining the observed thermal evolution and improving Venusian atmospheric models.

References

These findings suggest a complex coupling between atmospheric dynamics, cloud microphysics, and photochemistry, although no definitive mechanism has yet been established.

— Study on the Venusian Atmospheric Thermal Structure: A Comparative Analysis between VEX/Akatsuki and Venus-GRAM/VCD  (2608.26768 - Banerjee et al., 27 Aug 2026) in Section 1, Introduction