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Posted on November 23, 2018
The fourth US national climate study published today warns of profound irreversible changes by 2050, according to the first comprehensive climate study conducted entirely under the Trump administration, whose costs are likely to reach hundreds of billions of dollars a year by the mid – century. It is the pace of carbon dioxide emissions and not the absolute volume that makes our predominantly human anthropocene age so extraordinarily fragile.
The new report, to be released by Congress every four years, was released by the US Global Change research program. It is the product of 300 scientific experts under the direction of a federal advisory committee consisting of 60 members. It was open to the public, 13 federal agencies and a panel of the National Academy of Sciences.
Contrary to Trump's blind refusal and opposition to climate change, Progressive Democrats, who are expected to take control of the House in January, will push for an expansive "Green New Deal," one of the calls for rally to the approach of the 2020 campaign.
The report is the latest scientific publication that warns that the planet will undergo devastating changes in the coming years, which will permanently change the coastline, worsen droughts and storms, and promote the emergence of dangerous diseases as temperatures rise.
Although the report says that a swift action to reduce pollution by greenhouse gases could have a considerable impact on the state of the planet by the end of the century, many The impacts that the United States will see over the next two decades seem irreversible.
"The Great Death" – Our evolving sequel might look more like science fiction than anything in Earth's history
Our Anthropocene Age offers a real-time proof of concept to the global climate science community. Coral reefs, for example, which now provide one-quarter of the ocean's species, are likely to fail if even modest scenarios of CO2 emissions are realized.
According to Peter Brannen, in the extremities of the world, in the acidifying waters of the Southern Ocean, "the shells of small translucent and floating planktonic snails called pteropods, which are part of the base of the Antarctic food web, have been discovered pierced with holes. In 2008, NOAA scientist Nina Bednaršek discovered these corroded creatures during a research cruise around Antarctica. By 2050, ocean acidification will make the entire Southern Ocean uninhabitable against pteropods, an ecological disaster. "
"Because many [greehouse gases], especially carbon dioxide, reside in the atmosphere for decades or more, many climate-influenced effects are expected to continue to change until 2050, even if greenhouse gas emissions are to cease immediately ", said the fourth national climate assessment, vol. II.
"Although the mitigation and adaptation efforts have grown considerably over the past four years, they are not yet reaching the scale deemed necessary to avoid substantial damage to the environment. 39, economy, the environment and human health in the coming decades, "the report says.
Trump Twetted this morning, attacking the science of climate change this week as cold temperatures slaughtered on the East Coast, tweeted on Wednesday: "What happened to global warming?" Time and climate are two different things, as most sixth grade students know today.
The White House attempted to downplay the findings of the new report on Friday, saying that "they were largely based on the most extreme scenarios." The White House also noted that greenhouse gas pollution in the United States has decreased by 14% since 2005 – although the reasons for the decline include trends. initiated during the Obama era, as the abandonment of coal-fired power plants.
The 2017 report indicated that the 1.8 ° Fahrenheit increase in global temperatures since 1901 had raised temperatures to their highest level in the history of modern civilization and that it was extremely likely that human activities, including greenhouse gas emissions, have been the main cause of global warming since the mid-20th century.
The new federal report presents dark scenarios for each region of the country, including changes in the amount and timing of snow and precipitation on water stress.
"The report is largely based on the most extreme scenario, which contradicts long-standing trends, assuming that, despite strong economic growth likely to increase greenhouse gas emissions, technology and technology, Innovation as well as the rapidly expanding population would be limited, "said Mr. White. The House spokesman said in the email.
The next report, which will be published in four years, will further examine climate modeling and projections, the spokesman said, which "would provide a more transparent, data-driven process with more comprehensive information on the range of scenarios. and possible results. "
The Daily Galaxy via https://nca2018.globalchange.gov/
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