Peter Gallagher

For­tu­nately that’s not at all dif­fi­cult to do. The US ‘National Snow and Ice Data Cen­ter’, sup­ported by NASA and the US National Sci­ence Foun­da­tion, pro­vides daily and monthly updates of the ice cover at the Poles using satel­lite microwave imagery. Plots of the data show that the North Polar ice cover trend line is about 4% below the 1979–2000 mean and falling at a rate of about 3% per decade over the period since 1980. The plot of the South­ern Polar ice cover trend is, how­ever, about 9% above the mean over the 1979–2000 period and ris­ing at about 5% per decade.

There’s no doubt the world has warmed since the 1970s. There’s also <a href=“http://www.petergallagher.com.au/index.php/site/article/Australia-not-at-most-risk-of-warming/” title=“Peter Gal­lagher | Aus­tralia not at