According to the New York Times:
"Runaway growth in the emission of greenhouse gases is swamping all political efforts to deal with the problem, raising the risk of “severe, pervasive and irreversible impacts” over the coming decades, according to a draft of a major new United Nations report.
Global warming is already cutting grain production by several percentage points, the report found, and that could grow much worse if emissions continue unchecked. Higher seas, devastating heat waves, torrential rain and other climate extremes are also being felt around the world as a result of human-produced emissions, the draft report said, and those problems are likely to intensify unless the gases are brought under control."
Quoting the report directly:“Human influence has been detected in warming of the atmosphere and the ocean, in changes in the global water cycle, in reduction in snow and ice, and in global mean-sea-level rise; and it is extremely likely to have been the dominant cause of the observed warming since the mid-20th century,” the draft report said. “The risk of abrupt and irreversible change increases as the magnitude of the warming increases.”
The Times story notes that this report, meant to be a summary of previous reports, is not official until November, and will go through the diplomatic process that has resulted in less definite language in the past. But, the Times notes:
Using blunter, more forceful language than the reports that underpin it, the new draft highlights the urgency of the risks that are likely to be intensified by continued emissions of heat-trapping gases, primarily carbon dioxide released by the burning of fossil fuels like coal, oil and natural gas...It cited rising political efforts around the world on climate change, including efforts to limit emissions as well as to adapt to changes that have become inevitable. But the report found that these efforts were being overwhelmed by construction of facilities like new coal-burning power plants that will lock in high emissions for decades."
More conclusions:
"The new report found that it was still technically possible to limit global warming to an internationally agreed upper bound of 3.6 degrees Fahrenheit, or 2 degrees Celsius, above the preindustrial level. But continued political delays for another decade or two will make that unachievable without severe economic disruption, the report said."
"The draft report found that past emissions, and the failure to heed scientific warnings about the risks, have made large-scale climatic shifts inevitable. But lowering emissions would still slow the expected pace of change, the report said, providing critical decades for human society and the natural world to adapt.
“Continued emission of greenhouse gases will cause further warming and long-lasting changes in all components of the climate system, increasing the likelihood of severe, pervasive and irreversible impacts for people and ecosystems,” the report said.
The report noted that severe weather events, some of them linked to human-produced emissions, had disrupted the food supply in recent years, leading to several spikes in the prices of staple grains and destabilizing some governments in poorer countries.
Continued warming, the report found, is likely to “slow down economic growth, make poverty reduction more difficult, further erode food security, and prolong existing poverty traps and create new ones, the latter particularly in urban areas and emerging hot spots of hunger.”
None of this is new to most scientists, scholars, activists and reporters who have followed the subject. So the UN panel is hardly alone in these conclusions. Others buttress and extend them. For instance, the Sydney Morning Herald reports on at a conference in Australia: "The world is headed "down a dangerous path" with disruption of the food system possible within a decade as climate change undermines nations' ability to feed themselves, according to a senior World Bank official..."Unless we chart a new course, we will find ourselves staring volatility and disruption in the food system in the face, not in 2050, not in 2040, but potentially within the next decade," she said, according to her prepared speech.'
Meat and diary prices are already rising in the US due primarily to drought, but so far within the comfort level of most Americans. There's little prospect of a reversal and it's more likely that prices will continue to climb.
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