Tag: climate change
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Climate change: lines of evidence
A great video from the National Academy of Sciences about climate change and the science that helps us understand it and attribute global warming to greenhouse gas emissions. Great for teaching! [youtube]http://www.youtube.com/watch?v=gIUN5ziSfNc&feature=youtu.be[/youtube]
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Why we know the earth is warming and that human activities are responsible
In a piece about a new finding from the BEST project, SkS did a nice job explaining why we know the earth is warming and that human activities are responsible: 1) Basic physics – human fossil fuel combustion has increased the greenhouse effect, causing a global energy imbalance, which the planet responds to by warming. Over…
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Climate change is here — and worse than we thought
Below is a repost of an op-ed by Dr. James Hansen, director NASA’s Goddard Institute for Space Studies, that ran in the Washington Post last Friday, August 3. When I testified before the Senate in the hot summer of 1988 , I warned of the kind of future that climate change would bring to us and our planet.…
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Arctic sea ice “death spiral” marches on
a repost by Nevon from the Arctic Sea Ice Blog: Here is the updated Arctic sea ice volume graph as calculated by the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS) at the Polar Science Center: I think it’s pretty safe to say that we’re going to have a new record volume low, although the difference with 2010…
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Demise of reefs in Belize? Coda
[I was happy to receive a lot of comments on our most recent blog post from the field in the New York Times. Since the space available to respond to those comments on the NYT site is limited, I’ve elected to do so here.] Thanks to all for your comments. I have always considered myself…
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Reef Reminiscences: The way coral reefs were
What was the world like back in the day? Are the fantastic stories all just legends? With the notable exception of Jacques Cousteau, few people were taking pictures of the undersea world a few decades ago, not only because the technology was more difficult and expensive and less available, but also because we tend to…
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Yes, North Carolina sea level really is rising
[youtube]http://www.youtube.com/watch?v=OmW_EQzU_qI&[/youtube]
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Consensus statement on climate change and coral reefs
This comes from the 12th International Coral Reef Symposium, meeting in Cairns this week. I think the statement is largely accurate, although it exaggerates threats to corals from local factors like fishing and pollution. The second phrase of the final sentence (in bold) is demonstrably false; “A concerted effort to preserve reefs for the future…
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New science indicates climate change is the primary threat to coral reefs
Like so many other ecosystems, coral reefs are being greatly impacted by climate change. Greenhouse gases are trapping excess heat from the sun, and more than anything, are warming the oceans from tropical reefs to deep polar seas. Reef corals are sensitive to small amounts of warming. An increase of just a degree or two…
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A new study forecasts sea level rise based on 2C of warming and the picture isn’t pretty
Sea levels around the world can be expected to rise by several metres in coming centuries, if global warming carries on. Even if global warming is limited to 2 degrees Celsius, global-mean sea level could continue to rise, reaching between 1.5 and 4 metres above present-day levels by the year 2300, with the best estimate…