Gradual CO2 buildup can trigger sudden climate tipping points

GR:  Turning points, cascading failures, tipping points, and positive feedback loops are some of the terms used to describe our precarious thin-ice position. This story describes more evidence that devastating sudden events can occur. We are in danger folks, and the source is one that we have created ourselves. Greed is limiting the vision of our leaders. We must use every available means to show them what might happen.

A new study links rising CO2 concentrations with disruptions to key climate-controlling currents during ice age climate shifts.

Ice age ocean current disruptions linked with greenhouse gas changes

“Scientists say they’ve discovered another huge climate warning sign in the Arctic. Past increases in CO2 levels in the air drove ocean currents to a tipping point had a big impact on hemispheric weather patterns.

“Within the span of just a few decades, rising CO2 concentrations drove temperatures in Greenland up by 10 degrees Celsius, according to a new study led by researchers with the Alfred Wegener Institute and the University of Cardiff.

“The study, published in the journal Nature Geoscience, confirms that, in the past, gradually rising CO2 concentrations have set off abrupt changes in ocean circulation. These sudden changes, referred to as Dansgaard-Oeschger events, have been observed in ice cores collected in Greenland.” –Bob Berwyn (Continue reading: Gradual CO2 buildup can trigger sudden climate tipping points – Summit County Citizens Voice.)

Brazil following US in rolling back climate protections

GR: It is not good to see Trump’s Paris retreat mentioned in stories of other countries rolling back their climate commitments. It is especially disappointing to see Brazil making so many backward moves. Politics, greed, and corruption are once again attacking the Amazon. Anteaters, Capybaras, Parrots, and all the rest are losing their homes.

“Brazil is considering measures that would roll back environmental protections and make it difficult to meet its Paris climate accord targets.

“The move would see the country step back from its global leadership on climate change just as the United States is also retreating.

“Congress has already passed two measures that will dramatically reduce the size of protected environmental reserves. Lawmakers are also considering substantially relaxing environmental licensing rules for infrastructure, agricultural and industrial projects. A proposal that would change how indigenous lands are designated, potentially reducing their size and protection, is also on the table.

“This comes at a time when the Amazon and Atlantic rain forests are being cut at the fastest rate in nearly a decade, and the violent struggle for control of forested land is on the rise. “Brazil is throwing aside the opportunity to be a leader on these questions,” said Marcio Astrini, co-ordinator of public policy for Greenpeace in Brazil. “It’s very hard for someone to manage to be worse than (US President Donald) Trump on the environment, but the Brazilian government is working very hard” to do that, he added.

“Brazil was long seen as a global leader on environmental issues. As the major steward of the Amazon rain forest, its policies have a tremendous effect on global rates of carbon emissions reduction. In conjunction with Mr Trump’s recent decision to pull the US out of the Paris agreement, Brazil’s move away from environmental regulation could jeopardise global goals. The moves come amid political turmoil in Latin America’s largest nation. President Michel Temer is struggling to stay in office amid corruption allegations and threats of impeachment or removal by an electoral court. Amid the turmoil, he is trying to pass unpopular reforms he says are essential to helping Brazil’s economy shrug off a two-year recession.

“Mr Temer has agreed to back a series of measures promoted by Congress’ so-called “rural caucus” – a group of lawmakers representing the interests of rural landowners, including agribusiness and ranchers – in exchange for help passing his own agenda, and hopefully avoiding impeachment.

“This government is using the environmental agenda as currency,” Mr Astrini said.

“In April, a week-long protest outside Congress by indigenous groups who say Mr Temer is reducing protections on their lands and allowing land-grabs by farmers and ranchers illustrated the debate. When police fired tear gas at the protesters, they responded with spears and arrows.

“Last month, Congress passed two measures that convert around 1.4 million acres of protected land, the vast majority of it in the Amazon, into areas open to logging, mining and agricultural use.” –AP (Brazil considers following US in rolling back climate protections | BreakingNews.ie).

Second Biggest Jump in Annual CO2 Levels Reported as Trump Leaves Paris Climate Agreement

GR: CO2 emissions really increased last year. As pointed out in this article, CO2 stays in the atmosphere for many years. The CO2 we are emitting is adding to what is already up there. For our safety, emissions need to fall rapidly, not increase or remain constant. According to Steve Montzka, a NOAA scientist, we have to cut our emissions by 80 percent to get the concentration to stop rising and level off.

Last year’s increase in the atmospheric CO2 concentration was nearly double the average pace since detailed measurements started in 1979. Credit: Christopher Furlong/Getty Images

“As President Donald Trump prepared to pull the United States out of the global Paris climate agreement this week, scientists at NOAA reported that 2016 had recorded the second-biggest jump in atmospheric carbon dioxide on record.

“Last year’s increase in the atmospheric CO2 concentration was nearly double the average pace since detailed measurements started in 1979.

“Once CO2 is in the atmosphere, the heat-trapping gas persists there for decades as new emissions pile in, which means that even if global emissions level off—as they have started to do—the planet is on a path toward more warming, rising sea levels and increased heat waves and droughts in the decades ahead.

“Concentrations of other greenhouse gases, including methane and nitrous oxide, also increased last year, according to the National Oceanic and Atmospheric Administration’s latest update to its greenhouse gas index. The heating effect of all combined greenhouses gases in the atmosphere increased by 2.5 percent in 2016, according to the index.

“The warming effect of these chemicals we’re tracking has increased by 40 percent since 1990,” said Steve Montzka, a NOAA scientist who co-authored the update. “Even though emissions are leveling off, CO2 is so long-lived that the concentration is still increasing.”

“Getting the atmospheric concentration to also level off would require reducing emissions by 80 percent, he said.

“That 80 percent cut is exactly what is targeted under the Paris climate agreement, but the goal is in doubt as the Trump administration rolls back climate and energy policies meant to lower emissions in the United States, historically the world’s largest sources of greenhouse gas pollution.”

“All the indicators are going in the wrong direction, and warning bells are ringing so loud as to be deafening,” said Kevin Trenberth, a senior scientist in the climate analysis section at the National Center for Atmospheric Research. “Without the Paris agreement, the acceleration will likely continue and we will exceed 2 degrees Celsius above pre-industrial by the 2050s or earlier.” –Bob Berwyn (Continue reading: Second Biggest Jump in Annual CO2 Levels Reported as Trump Leaves Paris Climate Agreement | InsideClimate News.)

Look at the methane increases in the NOAA chart below. Though methane concentrations are still quite low, the rapid increase since about 2008 is probably from thawing permafrost. If the acceleration continues, global warming may exceed all the model predictions. [Reading and commenting on stories such as this one feels a bit like reading a science fiction story presented as news reports as in World War Z by Max Brooks.]

Ocean Farmers Make “Climate March by Sea”

GR:  The premise of the article below is that warming oceans are destroying marine ecosystems and eliminating fish-harvesting jobs. It’s about jobs, and ultimately about the U. S. national economy. It argues that fighting climate change will keep, not cut jobs. It points out that Trump uses “jobs” to hide the fact that his policies enable greater profits by major corporations. Who knew?

The fact is, “jobs” are a false goal. Losing fishing jobs to climate change isn’t what’s important. Preserving marine ecosystems is what’s important. We should march in opposition to fossil-fuel production of climate-changing CO2 because it is harming marine ecosystems.

We should also be marching for population control. As the global human population grows, the market for seafood grows and this has led to ecosystem devastation from overfishing. Harvesting the seas is not the only excess destroying ecosystems. Expanding farms and pasturelands, expanding cities, and growing waste pollution are doing their share as well. Most definitely yes, we need the new bill proposed in the U. S. Congress “100 by 50” that would eliminate 100% of fossil-fuel use by 2050. But we also need to control and reverse our population–most definitely.

This Sierra article has interesting points on the faulty reasoning behind Trump’s trickery.

Sierra Magazine:

“On President Trump’s first Earth Day in the White House, he declared on Twitter that “we celebrate our beautiful forests, lakes, and lands”—an amiable if blasé arm-punch to the planet from the leader of the free world.

“Until a few hours later that is, when the president resorted to his usual right cross.

“I am committed to keeping our air and water clean,” he tweeted, “but always remember that economic growth enhances environmental protection. Jobs matter!”

“Rarely does President Trump or his surrogates miss an opportunity to propound that “jobs matter” when it comes to the nation’s environmental policies—especially where climate change is concerned. This binary logic—environmental protection equals job killer—is deeply woven into their world view. Trump has repeatedly called Obama-era initiatives like the Clean Power Plan “job killers” and vowed to “rescind all the job-destroying Obama executive actions, including the Climate Action Plan.”

“The delegation of fishermen that set sail this morning from a marina in Solomons, Maryland, would beg to differ. The only “job destroyer” for them is climate change.

“Concerned about the threat global warming poses to their livelihoods, a crew of sustainable ocean farmers began a three-day journey today they’re calling the “Climate March by Sea.” At the tiller of the small commercial fishing boat is Bren Smith, owner of Thimble Island Ocean Farm and the executive director of GreenWave. They’re heading south down the Chesapeake before they plan to turn north up the Potomac on their way to Washington, D.C.

“Their final destination: the Peoples Climate March, when thousands of people, including indigenous, civic, social justice, business, and environmental advocacy groups are set to take to the streets of the nation’s capital to demand action on climate, jobs, and justice. “Climate change was supposed to be a slow lobster boil,” Smith said in an interview before casting off. “For me, it arrived 100 years earlier than expected. We fishermen are the citizen scientists reporting that water temperatures are going up, species are moving north, the weather is becoming more extreme. We can see it with our own eyes. We’re way beyond the idea of climate denial.”

TAKE ACTION: Click here for more information about how to participate in the Peoples Climate March in Washington, D.C., or another city near you.

“When it comes to environmental policy, the “job killer” argument is a red herring. According to an analysis by the Environmental Integrity Project, “two-tenths of one percent of layoffs are caused by government regulations of any kind, including environmental regulations. Layoffs are caused far more often by corporate buyouts, technological advances, and lower overseas labor costs.” –Jonathan Hahn (Continue: Ocean Farmers Take “Climate March by Sea” to Nation’s Capital | Sierra Club.)