sun is 5 billion years old. in 5 billion years sun will be history
hope you can find a ride to another hospitable planet
Climate Change l Global Warming l Update, News & Discussion
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sun is 5 billion years old. in 5 billion years sun will be history
hope you can find a ride to another hospitable planet
to planet earth
Yongpeng Sun-Tastaufen
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Not gonna happen. God designed universe big enough to trap humans in solar system and die with sun.
Good.
Yongpeng Sun-Tastaufen
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https://www.cbc.ca/news/thenational...stralia-youth-football-seniors-care-1.4996932
The cost of climate inaction
As much of North America shivers through an extreme cold snap that has killed at least 21 people, Australia has just turned the calendar page on its hottest month ever.
The country's Bureau of Meteorology confirmed Friday that the mean national temperature in January exceeded 30 C for the first time in modern history. And five 40 C-plus days last month now rank among the 10 warmest on record.
The extreme summer heat, which contributed to mass deaths of fish and wild horses, sparked wildfires and heat emergencies and worsened an ongoing drought in New South Wales.
And it has now been followed by another weather crisis — heavy monsoon rains in the north of the country.
The municipality of Townsville in Queensland State received a year's worth of rain over the past week. A full 1.1 metres of precipitation that has unleashed flash floods, closed roads and schools, and has dams ready to burst. More rain is in the forecast.
Scientists say the extreme weather events are linked to changes in climate that have already seen average temperatures in Australia rise by more than 1 C over the past century.
Last year was the country's third-hottest on record, and 2017 was its fourth.
Those who try to tune out such findings, like America's climate-change-skeptic-in-chief Donald Trump, should note that the polar vortex that sent temperatures plummeting in this hemisphere is also a product of global warming.
This week has brought plenty of bad news on the climate front.
A paper from NASA's Jet Propulsion Laboratory, published in the journal Science Advances, reveals that Antarctica's giant Thwaites Glacier has been melting from the inside out at a rapid pace. Radar satellites have detected a 300-metre deep chasm beneath its surface, covering an area two-thirds the size of Manhattan. Caused, they calculate, by the disappearance of 12.7 billion tons of ice over the past three years — directly responsible for four per cent of the current rise in sea levels. And if the rest of the glacier goes, the world's oceans will end up 65 centimetres higher, they say.
Another new study, published in the Journal of the American Heart Association, predicts a rise in congenital heart defects due to climate change. Research has already linked pregnancies during extreme summer heat to increased heart problems for newborns. But this paper quantifies the risk, saying the weather changes might create another 7,000 cases in the United States alone between 2025 and 2035.
And researchers tracking HIV in Lesotho have released data that shows that severe droughts are driving up infection rates, as the accompanying economic hardships lead young women in affected areas to become more sexually active.
U.S. intelligence authorities included a stark warning about the "negative effects of environmental degradation and climate change," in a report tabled before the U.S. Congress this week. They ranked the changing weather alongside terrorism and transnational crime as a global threat to human security.
And a story from Bloomberg Friday reveals that the U.S. navy is quietly planning to build a 4.3-metre-high wall around Washington's historic Navy Yard to protect its buildings from an anticipated rise in sea levels.
There are also more positive developments.
Oil giant BP is pledging to set hard greenhouse gas reduction targets for its operations — and tie bonuses for 36,000 employees to the fight against climate change. The move, spurred by activist investors, follows a similar promise from Royal Dutch Shell in December.
And young people across Europe have found inspiration in a 16-year-old Swedish girl and started organizing demonstrations demanding more government action on global warming.
On Thursday, more than 35,000 students took to the streets in Belgium, marching for the fourth Thursday in a row. Friday saw similar protests in Denmark and Germany, spurring a #FridaysForFuture social media hashtag.
The movement is set to expand to the Netherlands next, with more than 7,000 kids already registered for a Feb. 7 demo.
Although not everyone is down with them missing a day of school to try and save the planet.
"Education is education and we are not going to give way to truancy," Arie Slob, the Dutch education minister, told a television program last night.
The cost of climate inaction
As much of North America shivers through an extreme cold snap that has killed at least 21 people, Australia has just turned the calendar page on its hottest month ever.
The country's Bureau of Meteorology confirmed Friday that the mean national temperature in January exceeded 30 C for the first time in modern history. And five 40 C-plus days last month now rank among the 10 warmest on record.
The extreme summer heat, which contributed to mass deaths of fish and wild horses, sparked wildfires and heat emergencies and worsened an ongoing drought in New South Wales.
And it has now been followed by another weather crisis — heavy monsoon rains in the north of the country.
The municipality of Townsville in Queensland State received a year's worth of rain over the past week. A full 1.1 metres of precipitation that has unleashed flash floods, closed roads and schools, and has dams ready to burst. More rain is in the forecast.
Scientists say the extreme weather events are linked to changes in climate that have already seen average temperatures in Australia rise by more than 1 C over the past century.
Last year was the country's third-hottest on record, and 2017 was its fourth.
Those who try to tune out such findings, like America's climate-change-skeptic-in-chief Donald Trump, should note that the polar vortex that sent temperatures plummeting in this hemisphere is also a product of global warming.
This week has brought plenty of bad news on the climate front.
A paper from NASA's Jet Propulsion Laboratory, published in the journal Science Advances, reveals that Antarctica's giant Thwaites Glacier has been melting from the inside out at a rapid pace. Radar satellites have detected a 300-metre deep chasm beneath its surface, covering an area two-thirds the size of Manhattan. Caused, they calculate, by the disappearance of 12.7 billion tons of ice over the past three years — directly responsible for four per cent of the current rise in sea levels. And if the rest of the glacier goes, the world's oceans will end up 65 centimetres higher, they say.
Another new study, published in the Journal of the American Heart Association, predicts a rise in congenital heart defects due to climate change. Research has already linked pregnancies during extreme summer heat to increased heart problems for newborns. But this paper quantifies the risk, saying the weather changes might create another 7,000 cases in the United States alone between 2025 and 2035.
And researchers tracking HIV in Lesotho have released data that shows that severe droughts are driving up infection rates, as the accompanying economic hardships lead young women in affected areas to become more sexually active.
U.S. intelligence authorities included a stark warning about the "negative effects of environmental degradation and climate change," in a report tabled before the U.S. Congress this week. They ranked the changing weather alongside terrorism and transnational crime as a global threat to human security.
And a story from Bloomberg Friday reveals that the U.S. navy is quietly planning to build a 4.3-metre-high wall around Washington's historic Navy Yard to protect its buildings from an anticipated rise in sea levels.
There are also more positive developments.
Oil giant BP is pledging to set hard greenhouse gas reduction targets for its operations — and tie bonuses for 36,000 employees to the fight against climate change. The move, spurred by activist investors, follows a similar promise from Royal Dutch Shell in December.
And young people across Europe have found inspiration in a 16-year-old Swedish girl and started organizing demonstrations demanding more government action on global warming.
On Thursday, more than 35,000 students took to the streets in Belgium, marching for the fourth Thursday in a row. Friday saw similar protests in Denmark and Germany, spurring a #FridaysForFuture social media hashtag.
The movement is set to expand to the Netherlands next, with more than 7,000 kids already registered for a Feb. 7 demo.
Although not everyone is down with them missing a day of school to try and save the planet.
"Education is education and we are not going to give way to truancy," Arie Slob, the Dutch education minister, told a television program last night.
Yongpeng Sun-Tastaufen
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https://www.cbc.ca/news/technology/climate-change-polar-vortex-1.4998820
With wind chill values, it could feel like –51 C in some parts of Canada and U.S.
Baby, it's frigid outside.
A large swath of Canada, from the Prairies to Nova Scotia, is under a deep freeze. Temperatures in Winnipeg are dipping down to –36 C Monday night with a windchill of almost –50 C. In Windsor, which is typically the warmest spot in Ontario, the overnight temperature will dip to –27 C with a windchill of –40 C.
Even in parts of the U.S. Midwest, temperatures are expected to have a wind chill of –50 C.
This may leave some, like U.S. president Donald Trump, wondering where global warming has wandered off to.
he fact is, it's climate change, or global warming, that's behind this extreme cold.
Ever since the bitter winter of 2014, a new winter-weather catchphrase has been making the rounds: polar vortex.
The polar vortex is nothing new. It's just that it typically encircles the north pole. However, in recent years, it seems to be meandering southward every so often.
"This air mass always exists, and it often gets bumped and pushed around. In this case, the jet stream pushed it all the way down to the U.S. Midwest," said CBC meteorologist Johanna Wagstaffe. "Sometimes that air mass can get split, or divided because of the jet stream, so it ends up getting stuck in place."
That's what happened this week: the jet stream managed to split the descending polar vortex into three.
The jet stream
Though it's a relatively new area of study, there's increasing evidence that suggests this phenomenon will happen more often and become more extreme.
The key lies with the jet stream, a narrow, fast-moving band of air in our upper atmosphere that moves weather patterns around. In the past, the jet stream moved fairly smoothly around the northern hemisphere. But recently, it's developed more pronounced kinks that can bring cold, Arctic air much farther south than in the past, or bring heat from the Gulf of Mexico further north than has been typical.
And it's linked to the Arctic.
A recent Intergovernmental Panel on Climate Change report found the Arctic is warming two to three times faster than anywhere else on Earth. This temperature difference upsets the stability of the jet stream.
And that brings the cold Arctic air southward where it can linger, a result that meteorologists call a blocking pattern.
"We have seen more of these; we've noticed that trend already, that's proven. And all of our climate models show this trend will continue," Wagstaffe said. "And that doesn't just mean more heat and more drought conditions. It can also mean more of these extreme cold blasts or extreme wet or snowy systems staying in place longer than normal."
Climate vs. weather
The important thing to remember when discussing climate change is that climate and weather are two separate entities.
Weather is the state of the atmosphere pertaining to things like wind, moisture, temperature and more that occur on a day-to-day basis. Climate, on the other hand, is the average weather in one place over a long period of time.
Just because you step outside and the tears caused by bitter wind freeze on your cheeks, doesn't mean that climate change isn't happening.
In fact, at the same time much of Canada is in a deep freeze, other parts of the world are experiencing the opposite.
"The atmosphere is always trying to balance out its energy," Wagstaffe said. "So right now, on the other side of the globe, parts of northern Europe and northern Russia, they're actually experiencing record-breaking warm temperatures for this time of the year, and really close to the north pole."
Climate change isn't about what's happening today, but what's happening globally, over time.
With wind chill values, it could feel like –51 C in some parts of Canada and U.S.
Baby, it's frigid outside.
A large swath of Canada, from the Prairies to Nova Scotia, is under a deep freeze. Temperatures in Winnipeg are dipping down to –36 C Monday night with a windchill of almost –50 C. In Windsor, which is typically the warmest spot in Ontario, the overnight temperature will dip to –27 C with a windchill of –40 C.
Even in parts of the U.S. Midwest, temperatures are expected to have a wind chill of –50 C.
This may leave some, like U.S. president Donald Trump, wondering where global warming has wandered off to.
he fact is, it's climate change, or global warming, that's behind this extreme cold.
Ever since the bitter winter of 2014, a new winter-weather catchphrase has been making the rounds: polar vortex.
The polar vortex is nothing new. It's just that it typically encircles the north pole. However, in recent years, it seems to be meandering southward every so often.
"This air mass always exists, and it often gets bumped and pushed around. In this case, the jet stream pushed it all the way down to the U.S. Midwest," said CBC meteorologist Johanna Wagstaffe. "Sometimes that air mass can get split, or divided because of the jet stream, so it ends up getting stuck in place."
That's what happened this week: the jet stream managed to split the descending polar vortex into three.
The jet stream
Though it's a relatively new area of study, there's increasing evidence that suggests this phenomenon will happen more often and become more extreme.
The key lies with the jet stream, a narrow, fast-moving band of air in our upper atmosphere that moves weather patterns around. In the past, the jet stream moved fairly smoothly around the northern hemisphere. But recently, it's developed more pronounced kinks that can bring cold, Arctic air much farther south than in the past, or bring heat from the Gulf of Mexico further north than has been typical.
And it's linked to the Arctic.
A recent Intergovernmental Panel on Climate Change report found the Arctic is warming two to three times faster than anywhere else on Earth. This temperature difference upsets the stability of the jet stream.
And that brings the cold Arctic air southward where it can linger, a result that meteorologists call a blocking pattern.
"We have seen more of these; we've noticed that trend already, that's proven. And all of our climate models show this trend will continue," Wagstaffe said. "And that doesn't just mean more heat and more drought conditions. It can also mean more of these extreme cold blasts or extreme wet or snowy systems staying in place longer than normal."
Climate vs. weather
The important thing to remember when discussing climate change is that climate and weather are two separate entities.
Weather is the state of the atmosphere pertaining to things like wind, moisture, temperature and more that occur on a day-to-day basis. Climate, on the other hand, is the average weather in one place over a long period of time.
Just because you step outside and the tears caused by bitter wind freeze on your cheeks, doesn't mean that climate change isn't happening.
In fact, at the same time much of Canada is in a deep freeze, other parts of the world are experiencing the opposite.
"The atmosphere is always trying to balance out its energy," Wagstaffe said. "So right now, on the other side of the globe, parts of northern Europe and northern Russia, they're actually experiencing record-breaking warm temperatures for this time of the year, and really close to the north pole."
Climate change isn't about what's happening today, but what's happening globally, over time.
Yongpeng Sun-Tastaufen
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https://www.independent.co.uk/envir...s-co2-world-resources-institute-a8775751.html
The world is not on track to meet the greenhouse gas “turning point” required to avoid the most catastrophic impacts of climate change, experts have warned.
Inadequate progress has been made in shutting down coal plants, preventing deforestation and switching to electric cars, meaning emissions are unlikely to peak next year.
Experts agree that stabilising global warming below 1.5C beyond pre-industrial levels is crucial to avoid the worst results climate change including coral reef extinction and the devastation of coastal communities.
However, getting there will require unprecedented changes to every aspect of society, and climate analysts have previously identified 2020 as the year when emissions need to start falling to achieve this target.
But despite some progress in renewable energy development and climate investments around the world, the World Resources Institute (WRI) think tank concluded in a new report that this is unlikely to happen.
The group previously identified six key areas that need to be revolutionised to achieve the ambitious target of a 2020 turning point. These sectors were energy, transport, land use, industry, infrastructure and finance.
“Progress is uneven across the six milestones ... in most cases action is insufficient or progress is off track,” the report’s authors wrote.
This target was initially established by the Mission2020 coalition, which was launched by ex-UN climate chief Christiana Figueres in partnership with scientists and NGOs.
When they initially laid out their plans in 2017, there was room for cautious optimism as massive declines in coal use across the US and China had caused CO2 pollution to level off.
However, since then emissions have begun to rise again, and the new WRI report reveals that many of the goals set by the coalition three years ago are not close to being realised.
One target was for a fifth of new car sales being electric by 2020, and while there has been some progress towards this goal it is still expected to fall far short at around 3 per cent.
Another ambitious goal was for heavy industries such as steel and cement production to be on track for compliance with the Paris agreement, meaning halving emissions by 2050.
These industries produce enormous amounts of pollutants, but have proven difficult to decarbonise, and progress here has also fallen far short of the 2020 target.
In particular, the authors warned that all coal-fired power plants must be retired, and the enormous scale of deforestation that is removing some of the planet’s biggest carbon sinks must come to an end.
There has also been a failure to ramp up agricultural practices that both reduce CO2 emissions and increase the quantity of CO2 being sucked from the atmosphere by farmland.
“The report shows the pockets of significant activity where there is an opportunity to scale up and accelerate action, and we found there are many opportunities that remain untapped,” Kelly Levin, one of the report’s authors, told The Independent.
“Reaching many of the milestones is still technically feasible, but whether they are met will require exponential changes in policy, investment action and also mind set and behaviour.”
The world is not on track to meet the greenhouse gas “turning point” required to avoid the most catastrophic impacts of climate change, experts have warned.
Inadequate progress has been made in shutting down coal plants, preventing deforestation and switching to electric cars, meaning emissions are unlikely to peak next year.
Experts agree that stabilising global warming below 1.5C beyond pre-industrial levels is crucial to avoid the worst results climate change including coral reef extinction and the devastation of coastal communities.
However, getting there will require unprecedented changes to every aspect of society, and climate analysts have previously identified 2020 as the year when emissions need to start falling to achieve this target.
But despite some progress in renewable energy development and climate investments around the world, the World Resources Institute (WRI) think tank concluded in a new report that this is unlikely to happen.
The group previously identified six key areas that need to be revolutionised to achieve the ambitious target of a 2020 turning point. These sectors were energy, transport, land use, industry, infrastructure and finance.
“Progress is uneven across the six milestones ... in most cases action is insufficient or progress is off track,” the report’s authors wrote.
This target was initially established by the Mission2020 coalition, which was launched by ex-UN climate chief Christiana Figueres in partnership with scientists and NGOs.
When they initially laid out their plans in 2017, there was room for cautious optimism as massive declines in coal use across the US and China had caused CO2 pollution to level off.
However, since then emissions have begun to rise again, and the new WRI report reveals that many of the goals set by the coalition three years ago are not close to being realised.
One target was for a fifth of new car sales being electric by 2020, and while there has been some progress towards this goal it is still expected to fall far short at around 3 per cent.
Another ambitious goal was for heavy industries such as steel and cement production to be on track for compliance with the Paris agreement, meaning halving emissions by 2050.
These industries produce enormous amounts of pollutants, but have proven difficult to decarbonise, and progress here has also fallen far short of the 2020 target.
In particular, the authors warned that all coal-fired power plants must be retired, and the enormous scale of deforestation that is removing some of the planet’s biggest carbon sinks must come to an end.
There has also been a failure to ramp up agricultural practices that both reduce CO2 emissions and increase the quantity of CO2 being sucked from the atmosphere by farmland.
“The report shows the pockets of significant activity where there is an opportunity to scale up and accelerate action, and we found there are many opportunities that remain untapped,” Kelly Levin, one of the report’s authors, told The Independent.
“Reaching many of the milestones is still technically feasible, but whether they are met will require exponential changes in policy, investment action and also mind set and behaviour.”
Yongpeng Sun-Tastaufen
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Yongpeng Sun-Tastaufen
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Solar system rotates around Milky Way's galactic core. For 20,000 years Earth is in one of the spiral arms. For 100,000 years Earth is between spiral arms. Galactic arm has more energy than space between galactic arms. When Earth is in a spiral arm, it is interglacial. When Earth is between galactic arms, it is glacial.
http://www.sciencebits.com/ice-ages
Yongpeng Sun-Tastaufen
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https://www.thenational.ae/world/oc...omes-first-climate-change-extinction-1.827707
The rat-like Bramble Cay melomys, whose only known habitat was a small sandy island in far northern Australia, has not been spotted in a decade
Australia officially declared a Great Barrier Reef rodent extinct on Tuesday, making it the first mammal believed to have been killed off by human-induced climate change.
The rat-like Bramble Cay melomys - whose only known habitat was a small sandy island in far northern Australia - has not been spotted in a decade.
Researchers from Queensland determined a key factor in its disappearance was "almost certainly" repeated ocean inundation of the cay - a low-lying island on a coral reef - over the last decade, which had resulted in dramatic habitat loss.
Australia's environment ministry on Tuesday said it had officially transferred the animal to the "extinct" list.
The declaration was expected. The researchers completed a wide-ranging survey in 2014 in a bid to track down the species, but found no trace.
Available data on sea-level rise and weather events in the Torres Strait region "point to human-induced climate change being the root cause of the loss of the Bramble Cay melomys", a study released in 2016 said.
The Melomys rubicola, considered the Great Barrier Reef's only endemic mammal species, was first discovered on the cay in 1845 by Europeans who shot the "large rats" for sport.
The rat-like Bramble Cay melomys, whose only known habitat was a small sandy island in far northern Australia, has not been spotted in a decade
Australia officially declared a Great Barrier Reef rodent extinct on Tuesday, making it the first mammal believed to have been killed off by human-induced climate change.
The rat-like Bramble Cay melomys - whose only known habitat was a small sandy island in far northern Australia - has not been spotted in a decade.
Researchers from Queensland determined a key factor in its disappearance was "almost certainly" repeated ocean inundation of the cay - a low-lying island on a coral reef - over the last decade, which had resulted in dramatic habitat loss.
Australia's environment ministry on Tuesday said it had officially transferred the animal to the "extinct" list.
The declaration was expected. The researchers completed a wide-ranging survey in 2014 in a bid to track down the species, but found no trace.
Available data on sea-level rise and weather events in the Torres Strait region "point to human-induced climate change being the root cause of the loss of the Bramble Cay melomys", a study released in 2016 said.
The Melomys rubicola, considered the Great Barrier Reef's only endemic mammal species, was first discovered on the cay in 1845 by Europeans who shot the "large rats" for sport.
Yongpeng Sun-Tastaufen
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Arsalan 345
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Yongpeng Sun-Tastaufen
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Humans are so puny compared to Earth they only change atmosphere by 0.01% after 200 years. How much can spray sulphur in air do? Nada.
Arsalan 345
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i don't know but this global warming is very dangerous.we should take positive steps.we should do something.there must a way.
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