Climate change is occurring all over the globe as a 1°C increase in Earth's temperature has led to the rise in the sea level, melting of the Arctic ice, and unseasonable heat waves and heavy snow. To accurately predict the artificial climate changes set off by the increase in greenhouse gases, it is important to understand the effects of natural factors such as solar and volcanic activities. A recent study has shown how global precipitation decreases when volcanoes erupt in the tropics.