Investigation of carbon dioxide phase shift possibility under extreme Antarctic winter conditions

TL;DR

This paper explores the potential for carbon dioxide to undergo phase shifts and form snow in extreme Antarctic winter conditions, suggesting implications for climate and glacial history interpretations.

Contribution

It presents a hypothesis that CO2 can deposit as snow in Antarctica, potentially affecting climate models and historical glacial records.

Findings

CO2 phase shift possible in extreme Antarctic conditions

Potential formation of CO2 snow at Vostok station

Implications for climate and glacial chronology

Abstract

The Antarctic winter atmosphere minimal temperature and pressure series reveal that $CO_2$ phase shift (deposition) is possible in some extreme cases, even leading to possible $CO_2$ snow phenomenon at Vostok Antarctic station and in other near South Pole regions. A hypothesis has been formulated that stable $CO_2$ snow cover might have formed in Earth past which may influence interpretation of glacial chronology records. This effect may also manifest in other minor gases. Its global climate role is discussed.