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Climate Change Report Actually Understates Threats (thebulletin.org)

"Dire as it is, the latest IPCC report is actually too optimistic," writes Slashdot reader Dan Drollette. "It ignores the risk of self-reinforcing climate feedbacks pushing the planet into chaos beyond human control. So says a team of climate experts, including the winner of the 1995 Nobel for his work on depletion of the ozone layer." From their article: These cascading feedbacks include the loss of the Arctic's sea ice, which could disappear entirely in summer in the next 15 years. The ice serves as a shield, reflecting heat back into the atmosphere, but is increasingly being melted into water that absorbs heat instead. Losing the ice would tremendously increase the Arctic's warming, which is already at least twice the global average rate. This, in turn, would accelerate the collapse of permafrost, releasing its ancient stores of methane, a super climate pollutant 30 times more potent in causing warming than carbon dioxide.

By largely ignoring such feedbacks, the IPCC report fails to adequately warn leaders about the cluster of six similar climate tipping points that could be crossed between today's temperature and an increase to 1.5 degrees -- let alone nearly another dozen tipping points between 1.5 and 2 degrees. These wildcards could very likely push the climate system beyond human ability to control. As the UN Secretary General reminded world leaders last month, "We face an existential threat. Climate change is moving faster than we are.⦠If we do not change course by 2020, we risk missing the point where we can avoid runaway climate change, with disastrous consequences."

In related news, a court in The Hague "has upheld a historic legal order on the Dutch government to accelerate carbon emissions cuts, a day after the world's climate scientists warned that time was running out to avoid dangerous warming. Appeal court judges ruled that the severity and scope of the climate crisis demanded greenhouse gas reductions of at least 25% by 2020 -- measured against 1990 levels -- higher than the 17% drop planned by Mark Rutte's liberal administration. The ruling -- which was greeted with whoops and cheers in the courtroom -- will put wind in the sails of a raft of similar cases being planned around the world, from Norway to New Zealand and from the UK to Uganda."

Meanwhile, a new article in GQ cites estimates that more than 70 percent of global emissions come from just 100 companies, complaining that "there is no 'free market' incentive to prevent disaster."

5 of 396 comments (clear)

  1. Re: It ignores - what is not happening? by Anonymous Coward · · Score: 5, Informative

    Um, hard to know where to start, basically your entire post is disconnected from actual facts. The UN report was dire, but didn't include the effects of methane locked in permafrost.

    https://www.vice.com/en_us/article/qv9nm7/unpacking-the-devastating-un-report-on-climate-change

  2. It's 2018 and I still can't buy Soylent Green by Crashmarik · · Score: 3, Informative

    You might recall back in the 60 that by the year 2000 the U.S. would have over 300 million people and we would be starving and eating each other ?

    https://en.wikipedia.org/wiki/...

    Well it's 2018 and a 1/3rd of the world is now Obese ( http://www.healthdata.org/news... ) Small child must be very filling.

    UN Predicts 50 Million Climate Refugees by 2010

    Six years ago, the United Nations issued a dramatic warning that the world would have to cope with 50 million climate refugees by 2010. But now that those migration flows have failed to materialize, the UN has distanced itself from the forecasts. On the contrary, populations are growing in the regions that had been identified as environmental danger zones.

            It was a dramatic prediction that was widely picked up by the world’s media. In 2005, the United Nations Environment Programme (UNEP) and the United Nations University declared that 50 million people could become environmental refugees by 2010, fleeing the effects of climate change.

            But now the UN is distancing itself from the forecast: “It is not a UNEP prediction,” a UNEP spokesman told SPIEGEL ONLINE. The forecast has since been removed from UNEP’s website. —Spiegel Online

    2000 no more snow in the UK

    In March 2000, , “senior research scientist” David Viner, working at the time for the Climatic Research Unit (CRU) at the University of East Anglia, told the U.K. Independent that within “a few years,” snowfall would become “a very rare and exciting event” in Britain. “Children just aren’t going to know what snow is,” he was quoted as claiming in the article, headlined “Snowfalls are now just a thing of the past.”

    1864 Father of American Environmentalism predicts imminent destruction of environment

    As early as 1864 George Perkins Marsh, sometimes said to be the father of American ecology, warned that the earth was ‘fast becoming an unfit home for its “noblest inhabitant,”’ and that unless men changed their ways it would be reduced ‘to such a condition of impoverished productiveness, of shattered surface, of climatic excess, as to threaten the deprivation, barbarism, and perhaps even extinction of the species.’

    –Google Books Readings In Environmental Impact page 111

  3. Re:Go Poland go! (to hell) by 110010001000 · · Score: 3, Informative

    Don't feel so bad: Germany also increased their coal based power generation.

  4. I'll take this one! by hey! · · Score: 5, Informative

    But first, let me demonstrate what a pile of horseshit you just linked to.

    The article was written in 2014, based in data through 2013, and talks about a "15 year pause in global warming". 2013 - 15 = 1998. 1998 when it happened was the hottest year ever by a huge margin --an outlier. It was also a massive El Niño year, and El Niño is a weather event that produces unusually warm years..

    This is a classic technique of statistical misrepresentation: cherry picking a baseline to obtain the comparison you want. If you start in 1997 or 1999, the "disappearance" of warming disappears. If you use a moving average, even just a *two year* moving average, the disappearance also disappears. In other words, the supposed pause is just statistical horseshit.

    Cherry picking a baseline year is possible because weather isn't climate. Some years are warmer than the underlying climate trend and others are cooler than the trend. Sometimes you have a run of several years that are over or under, and in fact this is normal with real data. It's just like flipping a coin 13 times. It's normal to get runs of heads and tails, even with a fair coin.

    El Niños, which produce warm years, and La Niñas, which produce cool years, are not predicted by climate models because they are both random weather events, like flipping a coin.

    Of the 15 years of the Horseshit Pause, six were La Niña event years, a number of them particularly strong ones, however some of them were record warm years for La Niñas. Five were El Niño years, but relatively weak ones. So basically over the Horseshit Pause, we had a run of events which produce cooler weather than the underlying climate trend; even so the Horseshit Pause was the warmest decade on the instrumental record.

    Now you extend the Horseshit Pause period to include the following four years, you happen to get the four hottest years on the instrumental record: 2016, 2015, 2017, 2014. Note that 2016 and 2015 were El Niño, but 2017 was a La Niña year and should have been a cool one.

    More to the point, if you make the run of years just a little bit longer supposed inconsistency of the climate models from the weather record disappears.

    --
    Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
    1. Re:I'll take this one! by religionofpeas · · Score: 5, Informative

      Well, the claim is that unless we reduce our CO2 output then we will see temperatures rise. If temperatures keep rising then at some point 1998 will no longer be the maximum. It's been the maximum for 20 years now, when can we expect this to no longer be true?

      The 1998 peak was tied again in 2002, and has been broken in 2005, 2007, 2009, 2010, 2013, 2014, 2015, 2016, and 2017. See here for detailed table: https://data.giss.nasa.gov/gis...

      The annual anomaly (Jan through Dec) in 1998 was +0.62 degrees C. The highest year so far is 2016, with +0.99 degrees C. We haven't been under the 1998 value since 2011.