Climate Change: Sources of Warming in the Late 20th Century

TL;DR

This paper examines various natural and anthropogenic factors contributing to late 20th-century warming, highlighting the significant role of natural causes such as oscillations, aerosols, and solar activity.

Contribution

It provides an analysis of the relative impact of natural factors versus human influence on late 20th-century climate warming.

Findings

Natural causes account for much of the late 20th-century warming

Oscillations and aerosols significantly influence climate variability

Solar activity contributed notably to recent warming

Abstract

The role of the North Atlantic Oscillation, the Pacific Decadal Oscillation, volcanic and other aerosols, as well as the extraordinary solar activity of the late 20th century are discussed in the context of the warming since the mid-1970s. Much of that warming is found to be due to natural causes.