This is the first installment of a five-part series by Bill Chameides on How We Know Humans Cause Global Warming.
1. A 175-year-old Puzzle
2. What Chemistry Tells Us
3. Causes of Past Climate Change
4. The Medieval Warming Period
5. The Only Explanation Left
Most people these days accept that our planet is warming, but some find it hard to believe that mere humans could cause such a large-scale global change. How do we know that the warming is due to human activity? How can we be so sure?
Today’s post is by Bill Chameides, Chief Scientist at Environmental Defense.
The hurricane season began on June 1, and we are all waiting with some dread to see what this year will bring. Will it be a relatively mild season like last year, a devastating one like 2005, or something in between? An ominous sign is that we have already seen two tropical storms in the region: Andrea, which formed almost a month before the season began, and Barry, which formed on the first day of the season.
Last week I read that Oman was hit by Tropical Cyclone Gonu. ("Hurricane", "typhoon", and "cyclone" are all names for the same thing.) I know that Asia and Australia are regularly hit by tropical storms, but the Arabian Peninsula? Is that normal? I didn’t know, so I decided to do a little investigating. Here’s what I learned.
It’s going to be a quiet couple of days Climate411. We’re out of the office today and tomorrow at an off-site staff retreat, so I won’t be able to post as often as usual. There’s an easy way to find out if we’ve posted without having to come check every day.
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Today’s post is from Sara Hessenflow Harper, a policy analyst for our national climate campaign. She does extensive outreach to the agricultural community.
Yesterday, Mark MacLeod wrote about the “safety valve” and its flaws. I wanted to add to the discussion a more specific look at its implications for rural America. In addition to the problems Mark noted, the “safety valve” would also cut farmers out of the carbon market. Here’s how.
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Yesterday, The New York Times published an editorial about coal-to-liquid technology. Their warning against so-called energy solutions that actually worsen climate change is right on target.
For more, check out a post I wrote last month, about why coal-to-liquid technology is a bad idea.
If you’re concerned about hurricanes and global warming and you’ve been reading the newspapers and magazines, you are probably confused.
Perhaps in an effort to be “balanced,” most stories in the media these days present a muddled picture. Cornelia Dean’s piece in the New York Times is a good case in point: a scientific paper is cited claiming a connection; another is cited claiming the opposite. The implication is that the science is inconclusive.
