Global Warming
Answers to Frequently Asked Questions

Is the earth getting warmer?
Have surface temperatures risen?
Is the observed temperature rise due to urban heat islands?
Is the observed temperature rise a artefact of changes in coverage?
Do satellite data show that the earth is not warming?
Are the mountain glaciers melting?
Is the Antarctic warming?
Is the Arctic warming?
Is Arctic ice melting?
Is the permafrost thawing?

Are the oceans warming?
Are the corals dying?
Is the sea level rising?
Is the rise in sea level normal?
Is the North Atlantic (Arctic) Oscillation behaving normally?
Are precipitation patterns changing?

How does the current climate compare with that of the past
How does the current temperature compare with the past 1000 years?
How has temperature and CO₂ changed since the last ice age?
How does the current temperature compare with the past 400,000 years?
How does the current temperature compare with the past 600,000,000 years?
Have rapid increases in CO₂ caused climate change in the past?

What is causing the increased warmth?
Is there a natural greenhouse effect?
Is water vapour the most important greenhouse gas?
Are greenhouse gases increasing?
What is causing the increase in CO₂ and other greenhouse gases?
Is the Earth absorbing more radiation than it emits?
Is the recent warming caused by changes in solar activity?
Is the recent warming caused by changes in volcanic activity?
What caused the global temperature changes of the 20th century?

What are the predictions for the future?
Are climate models accurate?
Will increased plant growth absorb the excess CO₂?