Climate Change: Science and Solutions for Australia
Chapter 1: Observations of global and Australian climate
By Dr Karl Braganza and Dr John A Church
There is a great deal of evidence that the Earth’s climate has warmed over the last century. Warming is apparent in a range of climate indicators including increasing temperatures over land and in the oceans, and increases in sea level.
Global average temperatures have risen in line with climate model projections for the last 20 years, while global average sea levels are rising near the upper end of the climate model projections.
There is evidence that the observed changes to the climate system are consistent with changes expected due to increasing greenhouse gases. It is very likely that most of the warming over the last 60 years is due to increases in greenhouse gas emissions due to human activity.
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