such as tornadoes,
hail, lightning and dust storms. There is no clear trend in the annual
numbers of tropical cyclones. {WGI 3.2, 3.8, 4.4, 5.3, SPM}
2
Causes of change
Topic 2 Causes of change
36
Causes of change
This Topic considers both natural and anthropogenic drivers of
climate change, including the chain from greenhouse gas (GHG)
emissions to atmospheric concentrations to radiative
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