Cosmic Rays and the Evolution of Earths Climate During the Last 4.6 Billion Years

TL;DR

This paper investigates how Galactic Cosmic Rays (GCR) flux variations over 4.6 billion years correlate with Earth's climate changes, proposing a galactic influence on climate evolution and the faint sun paradox.

Contribution

It presents a model linking GCR flux variations to Earth's climate history based on star formation and solar activity evolution.

Findings

GCR flux variations resemble Earth's climate changes over 4.6 billion years

A potential galactic influence on Earth's climate evolution is suggested

The study offers insights into the faint sun climate paradox

Abstract

Variations in the flux of Galactic Cosmic Rays (GCR) at Earth during the last 4.6 billion years are constructed from information about the Star Formation Rate (SFR) in the Milky Way and the evolution of solar activity. The variations of GCR show a remarkable resemblance to changes in Earth's climate during the period considered, suggesting that Earths climate is closely linked to the evolution of our Milky Way. The link could be significant in the solution of the 'faint sun climate paradox'.