Natural changes blow hot and cold

From this article:

NATURAL variability in weather rather than climate change accounted for cooler February temperatures across most of Australia straight after record hot temperatures in January, a leading climate scientist said yesterday.

The Bureau of Meteorology estimates the nation is likely to record its coolest February since 2002 and 12th coolest since 1951 after recording the hottest January on record.

While many commentators blamed the high temperatures on climate change, CSIRO research fellow in atmospheric science Barrie Hunt said the succession of hot days were "not unusual for January".

"It's just year-to-year variability," Dr Hunt said.

"Underneath that variability is this insidious slow warming, which is the greenhouse effect, but it's not big enough to stop natural variability, and it's going to take a long time before it is."