The release of the IPCC report fell
victim to false balancing when an article in The Economist suggested that there had been a “pause” in global warming during
the last 15 years. Because of natural climate variability, whether
there appears to be a “pause” is largely a function of which
years you choose as your start and end points. 1998 was a year of
record high temperatures, so most “pause” advocates start there.
Below are the exact same climate data. The top chart shows in red the
long term trend that best fits the data. The bottom chart marks in blue several
places where global warming might appear to have “paused.”
The IPCC may have made a tactical error by addressing and refuting the
“pause” claim, which increased its familiarity and allowed the
media to suggest there was a “controversy” over whether climate
change was really happening. (“The global atmosphere hasn't been warming lately,” CBS reported.)
Media Matters did a study of coverage of the IPCC report from August 1
through October 1 on six TV and eight print outlets. The majority of
them mentioned the “pause.”
Although
climate change coverage had been improving in recent years, the
“pause” story brought about an increase in false balancing, with
more attention given to climate skeptics. As usual, Fox News and The
Wall Street Journal were the
worst, but doubters were 20% of those quoted by CBS and 17% by The
Washington Post. USA
Today published side-by-side
op-eds giving equal weight to the IPCC and its skeptics.
Another
depressing feature of news coverage is their failure to mention
climate change when reporting extreme weather events consistent with
climate predictions. Scientists, being a cautious lot, have often
said that no single weather event can be definitely attributed to
climate change. The media seem to have interpreted these statements
to mean that it would be irresponsible to even mention climate change
when reporting on hurricanes, tornados, wildfires, droughts, etc.
Fairness and Accuracy in Reporting (FAIR) did an analysis of reports on
extreme weather on ABC, CBS and NBC TV news from January through
September—ending before Typhoon Haiyan. The results could hardly
have been more conclusive.
As Jim Naureckas has pointed out, every weather event is caused by the climate. While it's theoretically possible to imagine that Typhoon Haiyan might have occurred in a parallel universe in which we had not heated up the global temperature, defining “cause” that narrowly makes it impossible to ever attribute a weather event to the climate. This is not helpful when planning public policy. It's time for climate scientists to demand a new norm for reporting extreme weather. Current weather events should be compared to the historical record and changing trends should be reported every time the media do a weather story to which climate change is relevant.
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