US may now be getting peek at climate change

WASHINGTON — Is it just freakish weather or something more? Climate scientists suggest that if you want a glimpse of some of the worst of global warming, take a look at US weather in recent weeks.

Horrendous wildfires. Oppressive heat waves. Devastating droughts. Flooding from giant deluges. A freak wind storm called a derecho.

These are the kinds of extremes specialists have predicted will come with climate change, although it’s far too early to say that is the cause. Nor will they say global warming is the reason 3,215 daily high temperature records were set in the month of June.


Scientifically linking individual weather events to climate change takes intensive study, complicated mathematics, computer models, and lots of time. Sometimes it isn’t caused by global warming. Weather is always variable; freak things happen.

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And this weather has been local. Europe, Asia, and Africa aren’t having similar disasters now, although they have had their own extreme events in recent years.

But since at least 1988, climate scientists have warned that climate change would bring, in general, increased heat waves, more droughts, more sudden downpours, more widespread wildfires, and worsening storms. In the United States, those extremes are happening here and now.

So far this year, more than 2.1 million acres have burned in wildfires, more than 113 million people in the United State were in areas under extreme heat advisories last Friday, two-thirds of the country is experiencing drought, and earlier in June, deluges flooded Minnesota and Florida.

‘‘This is what global warming looks like at the regional or personal level,’’ said Jonathan Overpeck, professor of geosciences and atmospheric sciences at the University of Arizona. ‘‘The extra heat increases the odds of worse heat waves, droughts, storms, and wildfire. This is certainly what I and many other climate scientists have been warning about.’’


As recently as March, a special report an extreme events and disasters by the Nobel Prize-winning Intergovernmental Panel on Climate Change warned of ‘‘unprecedented extreme weather and climate events.’’ Its lead author, Chris Field of the Carnegie Institution and Stanford University, said Monday, ‘‘It’s really dramatic how many of the patterns that we’ve talked about as the expression of the extremes are hitting the US right now.’’