66
   

Global Warming...New Report...and it ain't happy news

 
 
hightor
 
  2  
Reply Sun 8 Dec, 2019 09:48 am
World’s Oceans Are Losing Oxygen Rapidly, Study Finds
Walter Hinteler
 
  2  
Reply Tue 10 Dec, 2019 10:56 am
@hightor,
Greenland's ice sheet melting seven times faster than in 1990s
Quote:
Scale and speed of loss much higher than predicted, threatening inundation for hundreds of millions of people

Greenland’s ice sheet is melting much faster than previously thought, threatening hundreds of millions of people with inundation and bringing some of the irreversible impacts of the climate emergency much closer.

Ice is being lost from Greenland seven times faster than it was in the 1990s, and the scale and speed of ice loss is much higher than was predicted in the comprehensive studies of global climate science by the Intergovernmental Panel on Climate Change, according to data.

That means sea level rises are likely to reach 67cm by 2100, about 7cm more than the IPCC’s main prediction. Such a rate of rise will put 400 million people at risk of flooding every year, instead of the 360 million predicted by the IPCC, by the end of the century.

Sea level rises also add to the risk of storm surges, when the fiercer storms made more likely by global heating batter coastal regions. These impacts are likely to strike coastal areas all around the world.

“These are not unlikely events or small impacts,” said Andrew Shepherd, professor of earth observation at the University of Leeds, one of the lead authors of the study. “[These impacts] are happening and will be devastating for coastal communities.”

Greenland has lost 3.8tn tonnes of ice since 1992, and the rate of ice loss has risen from 33bn tonnes a year in the 1990s to 254bn tonnes a year in the past decade. Greenland’s ice contributes directly to sea level rises as it melts because it rests on a large land mass, unlike the floating sea ice that makes up much of the rest of the Arctic ice cap.

About half of the ice loss from Greenland was from melting driven by air surface temperatures, which have risen much faster in the Arctic than the global average, and the rest was from the speeding up of the flow of ice into the sea from glaciers, driven by the warming ocean.

Oceans have absorbed most of the excess heat arising from our disruption of the climate to date, and much of the carbon dioxide, but they are reaching the limits of their capacity to do so. Sea level rises are driven not only by melting ice but by the thermal expansion of the seas as they warm.

The scale and speed of the ice loss surprised the team of 96 polar scientists behind the findings, published on Tuesday in the journal Nature. The Ice Sheet Mass Balance Inter-comparison Exercise comprised 26 separate surveys of Greenland from 1992 to 2018, with data from 11 different satellites and comparisons of volume, flow and gravity compiled by experts from the UK, Nasa in the US, and the European Space Agency.

Erik Ivins, of the Nasa Jet Propulsion Laboratory in California, stressed that the findings – the most comprehensive survey yet of the ice sheet over the past few decades – were based on observations, rather than computer modelling.

“While computer simulation allows us to make projections from climate change scenarios, the satellite measurements provide prima facie evidence,” he said.

The peak year for ice loss, according to the observations, was 2011 when 335bn tonnes of ice were lost. Since then, the average rate has slowed to 238bn tonnes a year from 2013, but this does not include the most recent observations from this summer, which showed even more widespread melting.

Governments are meeting in Madrid for the second week of crucial UN talks on the global response to the climate emergency. Campaigners have been frustrated by the slow pace of the negotiations, despite growing public clamour, including a 500,000-strong march through the centre of the Spanish capital led by the Swedish climate activist Greta Thunberg.

Rachel Kennerley, a climate campaigner at Friends of the Earth, said: “We’re in a climate emergency – the impacts are coming thicker and faster every day. This latest research is yet more in an ever-growing pile of evidence which shows we need real action, not warm words. Governments need to stop dragging their feet and deliver real emissions cuts and real support for vulnerable people already experiencing the devastating effects of climate breakdown.”

The IPCC is the gold standard for climate science, but some experts are concerned that its findings do not take into account the potential for “tipping points”, thresholds beyond which climate breakdown accelerates and becomes catastrophic and irreversible.

Louise Sime, a climate scientist at the British Antarctic Survey, said of the new paper: “This finding should be of huge concern for all those who will be affected by sea level rise. If this very high rate of ice loss continues, it is possible that new tipping points may be breached sooner than we previously thought.”
livinglava
 
  1  
Reply Tue 10 Dec, 2019 03:16 pm
@Walter Hinteler,
Walter Hinteler wrote:

Greenland's ice sheet melting seven times faster than in 1990s
Quote:
Scale and speed of loss much higher than predicted, threatening inundation for hundreds of millions of people

Greenland’s ice sheet is melting much faster than previously thought, threatening hundreds of millions of people with inundation and bringing some of the irreversible impacts of the climate emergency much closer.

Ice is being lost from Greenland seven times faster than it was in the 1990s, and the scale and speed of ice loss is much higher than was predicted in the comprehensive studies of global climate science by the Intergovernmental Panel on Climate Change, according to data.

That means sea level rises are likely to reach 67cm by 2100, about 7cm more than the IPCC’s main prediction. Such a rate of rise will put 400 million people at risk of flooding every year, instead of the 360 million predicted by the IPCC, by the end of the century.

Sea level rises also add to the risk of storm surges, when the fiercer storms made more likely by global heating batter coastal regions. These impacts are likely to strike coastal areas all around the world.

“These are not unlikely events or small impacts,” said Andrew Shepherd, professor of earth observation at the University of Leeds, one of the lead authors of the study. “[These impacts] are happening and will be devastating for coastal communities.”

Greenland has lost 3.8tn tonnes of ice since 1992, and the rate of ice loss has risen from 33bn tonnes a year in the 1990s to 254bn tonnes a year in the past decade. Greenland’s ice contributes directly to sea level rises as it melts because it rests on a large land mass, unlike the floating sea ice that makes up much of the rest of the Arctic ice cap.

About half of the ice loss from Greenland was from melting driven by air surface temperatures, which have risen much faster in the Arctic than the global average, and the rest was from the speeding up of the flow of ice into the sea from glaciers, driven by the warming ocean.

Oceans have absorbed most of the excess heat arising from our disruption of the climate to date, and much of the carbon dioxide, but they are reaching the limits of their capacity to do so. Sea level rises are driven not only by melting ice but by the thermal expansion of the seas as they warm.

The scale and speed of the ice loss surprised the team of 96 polar scientists behind the findings, published on Tuesday in the journal Nature. The Ice Sheet Mass Balance Inter-comparison Exercise comprised 26 separate surveys of Greenland from 1992 to 2018, with data from 11 different satellites and comparisons of volume, flow and gravity compiled by experts from the UK, Nasa in the US, and the European Space Agency.

Erik Ivins, of the Nasa Jet Propulsion Laboratory in California, stressed that the findings – the most comprehensive survey yet of the ice sheet over the past few decades – were based on observations, rather than computer modelling.

“While computer simulation allows us to make projections from climate change scenarios, the satellite measurements provide prima facie evidence,” he said.

The peak year for ice loss, according to the observations, was 2011 when 335bn tonnes of ice were lost. Since then, the average rate has slowed to 238bn tonnes a year from 2013, but this does not include the most recent observations from this summer, which showed even more widespread melting.

Governments are meeting in Madrid for the second week of crucial UN talks on the global response to the climate emergency. Campaigners have been frustrated by the slow pace of the negotiations, despite growing public clamour, including a 500,000-strong march through the centre of the Spanish capital led by the Swedish climate activist Greta Thunberg.

Rachel Kennerley, a climate campaigner at Friends of the Earth, said: “We’re in a climate emergency – the impacts are coming thicker and faster every day. This latest research is yet more in an ever-growing pile of evidence which shows we need real action, not warm words. Governments need to stop dragging their feet and deliver real emissions cuts and real support for vulnerable people already experiencing the devastating effects of climate breakdown.”

The IPCC is the gold standard for climate science, but some experts are concerned that its findings do not take into account the potential for “tipping points”, thresholds beyond which climate breakdown accelerates and becomes catastrophic and irreversible.

Louise Sime, a climate scientist at the British Antarctic Survey, said of the new paper: “This finding should be of huge concern for all those who will be affected by sea level rise. If this very high rate of ice loss continues, it is possible that new tipping points may be breached sooner than we previously thought.”


This may all be true, but there are people who wouldn't change their ways to solve climate problems even if they believed in it and believed in the possibility of restoring sustainability.

The reason is that such people don't have enough faith in the rest of humanity to make sacrifices that are required to achieve sustainability. So, for example, many people are aware that the Paris Climate Agreement is just a move toward creating rules that will punish polluters for serving global demand from countries where low-polluters invest their money. If some post-Industrial EU countries are investing in China and the US and then fining/taxing them for polluting, that is going to work in favor of those post-industrial investment-bank funded countries even while it taxes the countries they are investing in.

They are not going to care if the economies of those countries they invest in are burdened by climate reform because they will just invest in whatever is going on there to make more money.

We should realize that there are economic barriers to climate reform that go beyond the local/national economies of individual countries or even those countries they trade with directly.

Global trade is not going to respond to climate regulations that target governments at the national level. Really regulations should be targeting corporations and industries directly instead of trying to penalize governments for failing to reform consumer/business behaviors that are caused by the synergism between individuals and economic corporations/business.
0 Replies
 
oralloy
 
  -1  
Reply Tue 10 Dec, 2019 10:08 pm
@Olivier5,
Olivier5 wrote:
oralloy wrote:
I'm not presenting any data at all.

Afraid to say anything?

Nah. It's more that I have no position on this issue.

The fact that I have no position does not exempt people who do have a position from needing to support their position with reliable (not cherry picked) evidence.
0 Replies
 
oralloy
 
  -1  
Reply Tue 10 Dec, 2019 10:11 pm
@Olivier5,
Olivier5 wrote:
Our children are fucked, our grand children are fucked, our grand grand children are fucked, our grand-grand-grand children are too, so we might as well get fucked too, I guess.

If that's true, then it's a shame that no one bothered to produce any reliable evidence to prove it.
MontereyJack
 
  2  
Reply Tue 10 Dec, 2019 11:13 pm
@oralloy,
Millions of deata points have been produced to prove it. Your contention that they are not reliable is entirely bogus. Enjoy it when the Michigan woods around your bunker turn into the Michigan Sahara.
Walter Hinteler
 
  2  
Reply Tue 10 Dec, 2019 11:53 pm
@MontereyJack,
Climate change hitting top U.S. fishery in the Arctic: NOAA
Quote:
WASHINGTON/ANCHORAGE (Reuters) - Climate change is causing chaos in the Bering Sea, home to one of America’s largest fisheries, an example of how rising temperatures can rapidly change ecosystems important to the economy, U.S. federal government scientists said in a report on Tuesday.

Rising temperatures in the Arctic have led to decreases in sea ice, record warm temperatures at the bottom of the Bering Sea and the northward migration of fish species such as Pacific cod, the U.S. National Oceanic and Atmospheric Administration, or NOAA, said in its 2019 Arctic Report Card.

While the changes are widespread in the Arctic, the effect on wildlife is acute in the eastern shelf of the Bering Sea, which yields more than 40% of the annual U.S. fish and shellfish catch.

“The changes going on have the potential to influence the kinds of fish products you have available to you, whether that’s fish sticks in the grocery store or shellfish at a restaurant,” said Rick Thoman, a meteorologist in Alaska and one of the report’s authors.

The warning was the latest from a U.S. government agency about climate change even as President Donald Trump has voiced skepticism about global warming and pushed to maximize production of oil, gas and coal. Last month his administration filed paperwork to withdraw the United States from the 2015 Paris agreement on climate change.

The report identified a decrease in recent years in the Bering Sea “cold pool,” which used to be a dependable mass of very salty frigid water down to the sea floor that functioned as a natural fence separating fish species. That has likely caused a shift in distribution of walleye pollock and Pacific cod, the report said.

No cold pool was found in 2018 and this year it was smaller than normal, it said.

Fish stocks are scrambled, with some species moving north. Crab fishermen in Nome have reported catching more cod than crabs, as Pacific cod are not doing as well south of there. Last week, the North Pacific Fishery Management Council shut down the 2020 Pacific cod harvest in the Gulf of Alaska.

“It’s heartbreaking,” said Simon Kinneen, the chairman of the North Pacific Fishery Management Council. Cod stocks have been hard hit by successive heat waves in the Gulf of Alaska, fishery scientists say.

The report also said the melt of the ice sheet over Greenland this year rivaled that of 2012, the previous year of record ice loss.

It also detailed a shift of Arctic permafrost regions from being a sink for carbon dioxide emissions to a source of them, as warming uncovers soil, triggering microbes to emit the main gas linked to global warming.

The wide ecosystem changes also affect the 70 communities of indigenous people in the Bering Sea, with hunters seeking seals, walrus, whales and fish having to travel much farther offshore as the ice melts.

“Our hunters are finding it more difficult to navigate on the land and are moving out to sea,” Mellisa Johnson, the executive director of the Bering Sea Elders, told a meeting in San Francisco of the American Geophysical Union, where the report was released.

Scientists said warming in the Arctic, which functions as a global air conditioner, could lead to rapid changes far away from the region.

“Two years ago nobody was talking about a wholesale shift in the Bering Sea ecosystem,” Thoman said.


Full MOAA report Arctic Report Card: Record territory for warm temperatures, loss of snow and ice, the major federal assessment of climate change trends and impacts throughout the region.
The study paints an ominous picture of a region lurching to an entirely new and unfamiliar environment.
0 Replies
 
oralloy
 
  -2  
Reply Wed 11 Dec, 2019 12:25 am
@MontereyJack,
MontereyJack wrote:
Millions of deata points have been produced to prove it. Your contention that they are not reliable is entirely bogus.

That is incorrect. Bad data is bad data.


MontereyJack wrote:
Enjoy it when the Michigan woods around your bunker turn into the Michigan Sahara.

I don't know what you're projecting, but this nonsense about bunkers has nothing to do with me.
MontereyJack
 
  2  
Reply Wed 11 Dec, 2019 07:52 am
@oralloy,
Millions of excellent data points exist. Your claim they are bad data is what is bogus. Let me simplify it for your comprehension: enjoy it when the Michigan property you live on becomes the Michigan Sahara due to climate change. Enjoy.
Olivier5
 
  2  
Reply Wed 11 Dec, 2019 09:33 am
@MontereyJack,
The boy is in denial and will remain there for a few years, out of fear I suspect - fear that the 'data' is true, I mean.

You can't teach an important truth to a stranger, they say, and people in denial are the ultimate strangers. They run away from truth tellers in order to preserve themselves.
RABEL222
 
  1  
Reply Wed 11 Dec, 2019 11:11 am
@Olivier5,
In the u s preservation has become unconscious self destruction. Stick your head up your ass while shouting no, no, no. That's the conservative rule of life.
hightor
 
  2  
Reply Thu 12 Dec, 2019 06:04 am
Exposing a Hidden Climate Threat: Methane ‘Super Emitters’
0 Replies
 
Olivier5
 
  1  
Reply Thu 12 Dec, 2019 06:36 am
@RABEL222,
Quote:
preservation has become unconscious self destruction.

Yes, climate change denialists have won the fight against truth and life, and doomed themselves and their kids in the process.

The problem is: they've doomed everybody else too.
farmerman
 
  1  
Reply Thu 12 Dec, 2019 06:49 am
@Olivier5,
what is meant by "preservationist"??. To me, thats a person who stands up against rampant land development.
Olivier5
 
  1  
Reply Thu 12 Dec, 2019 06:56 am
@farmerman,
In context, Rabel means people who stick their head in the sand to 'preserve' their peace of mind, their lifestyle, and their 'right' to keep screwing up the climate.
farmerman
 
  1  
Reply Thu 12 Dec, 2019 09:25 am
@Olivier5,
preservationist is more a positive term (to me). What I hear used for the "head in the sand deniers" is the term "preppers". These are usually the all-seeing assholes who feelthe world is coming to an end by a variety of meaans and they are gonna be holed up in a buried septic tank..
Olivier5
 
  1  
Reply Thu 12 Dec, 2019 09:30 am
@farmerman,
I'm no specialist of the English language. The point, over and beyond the words used to express it, is that GW is not just an "inconvenient" truth: it's downright scary. I believe deniers are also motivated by their fear of the truth.
0 Replies
 
Finn dAbuzz
 
  -1  
Reply Thu 12 Dec, 2019 11:45 am
I am a "Climate Change Denier" (lock me up!!) to the extent that I am highly skeptical of both the doomsday predictions and (to an even greater extent) the motivations of "Climate Change Affirmers."

Whether or not there is validity to the expressed concerns it is undeniable that the Global Left has seized upon the issue as a means for a massive global redistribution of wealth never before seen in history. Many of the CC players have admitted as much.

Regardless, none of the extreme measures that have been claimed as necessary to forestall doomsday are going to be taken and even if AOC and her legions took over the US, lock stock and barrel, tomorrow and implemented the Green New Deal squared, the doomsday predicted will still occur.

In order for the Climate Change conspiracy theory (incorporating the article of faith that all the doomsday predictions are 100% accurate), we have to believe that the people who have extremely high financial stakes in not addressing it, either have no children or grandchildren or don't give a damn about them. I suppose an alternative wacky explanation is that they all plan on using their billions to create some small protected zone on the Canadian tundra.

Still, it's certainly a possibility that at least one fevered prediction, of thousands, about the end of the world, will prove remotely accurate, however no matter what, the world will not come to an end because of CC and neither will life on earth. If humanity is wiped from the planet (unlikely) it will be humanity's fault, but from the afterlife in which few of you believe you can all scream "I told you so!!"

There are far more clear and present dangers to my children, grandchildren and the children of the nation and the world that need to be addressed by my government and others.

When CC advocates unite to address just one city in the world where children die like flies either from disease or criminals and they spend their money, not the money of others, to attempt to solve the problem, I will take their sanctimonious virtue-signaling declarations a bit more seriously.

In the meantime, spare me your piety, indignation, and fury about CC Deniers

blatham
 
  1  
Reply Thu 12 Dec, 2019 11:55 am
@Finn dAbuzz,
Quote:
it is undeniable that the Global Left has seized upon the issue as a means for a massive global redistribution of wealth never before seen in history. Many of the CC players have admitted as much.

Is that so? You will surely provide links to the "many" instances where this has happened.
farmerman
 
  2  
Reply Thu 12 Dec, 2019 12:10 pm
@Finn dAbuzz,
We dont have to expect that ALL the billionaires deny CC, just enough influential millenialists (like the late Koch brother). Money in hand often has a habit of convincing one to act in a means opposite to ones best interests. How many people will expect there to be enough time so they can hve both? A lot, Id suspect.

Why, ifn I didnt know better , Id think you were preaching the moralistic discourse from a liberals POV.
 

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