Focus on India. This post from Carbon Brief has all sorts of statistics needed to evaluate the prospects for India’s future impact on global climate change. India has about the same population as China and has all the tools in place for rapid economic growth comparable to that accomplished by China over the past few decades. Its present CO2 emissions per capita are relatively very low, about one-quarter those of the Chinese, which are now just over the average for Europeans. That number must come down for all countries, if there is any hope for meeting climate targets, but for India and some smaller countries like it the trend is almost sure to continue upward. How far up is a good question. Meanwhile, will the combined declines in China, Europe and the US be great enough to offset the rise in India and other lesser developed nations?
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A report showing “startling” changes in Canada’s high Arctic region. Analysis of lakebed sediments provided a clear picture of critical data over a 300-year period. “The lake and the lake ecosystem have been in a relatively stable state for hundreds of years, but all it took was a one-degree increase in regional air temperature for it to enter a completely new state…..The biological food web looks different, the biogeochemical cycles are accelerated, and we’re observing more organic nutrients, contaminants and carbon coming into the system.” What will the next degree of temperature change bring to bear?
https://phys.org/news/2018-03-reveals-startling-evidence-effects-climate.html
https://phys.org/news/2018-03-reveals-startling-evidence-effects-climate.html
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Scientists have determined the history of the melt rate of the West Greenland Ice Sheet since 1550. As expected, the rate has accelerated over the past fifty yeas. The information is gathered by analyzing thin layers of ice, as found within frozen core material, that represent the refreezing of water formed by surface melting during particularly warm years. “It is striking to see how a seemingly small warming of only 2.2 degrees Fahrenheit can have such a large impact on melt rates in west Greenland.”
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What the IPBES had to say about threats to biodiversity (Scientific American). This is the group that issued a report on land degradation that was well-publicized plus a series of reports on biodiversity just now getting attention. The point made here is that climate change is a fast-growing threat that is emerging as equal to land degradation and habitat loss. “We cannot afford to tackle any one of these three threats in isolation—they each deserve the highest policy priority and must be addressed together.”
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A recent interview with Paul Ehrlich in the Guardian (see CL#1135) has drawn a variety of interesting responses. The first two that are shown in this post are exemplary. The Green Revolution indeed saved the day with respect to Ehrlich’s dire forecast, supporting a boom in population, life expectancy, global living standards and so on, but did it leave us today in a position where the benefits are truly sustainable? You can picture the past fifty years as a sort of microcosm of the entire Industrial Revolution, or perhaps, some might say, as its climax.
Carl