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Climate matters

wildlife, gardening, environment, Rural living, Pets and Vets
dspp
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Re: Climate matters

#374736

Postby dspp » January 8th, 2021, 1:06 pm

"The climate crisis continued unabated in 2020, with the the joint highest global temperatures on record, alarming heat and record wildfires in the Arctic, and a record 29 tropical storms in the Atlantic.

Despite a 7% fall in fossil fuel burning due to coronavirus lockdowns, heat-trapping carbon dioxide continued to build up in the atmosphere, also setting a new record. The average surface temperature across the planet in 2020 was 1.25C higher than in the pre-industrial period of 1850-1900, dangerously close to the 1.5C target set by the world’s nations to avoid the worst impacts.

Only 2016 matched the heat in 2020, but that year saw a natural El Niño climate event which boosts temperatures. Without that it is likely 2020 would have been the outright hottest year. Scientists have warned that without urgent action the future for many millions of people “looks black”.

The temperature data released by the European Union’s Copernicus Climate Change Service (C3S) showed that the past six years have been the hottest six on record. They also showed that Europe saw its hottest year on record, 1.6C above the long-term average, with a searing heatwave hitting western Europe in late July and early August."


etc

https://www.theguardian.com/environment ... r-recorded

- dspp

dspp
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Re: Climate matters

#380602

Postby dspp » January 25th, 2021, 1:51 pm

"Global ice loss accelerating at record rate, study finds
Rate of loss now in line with worst-case scenarios of the Intergovernmental Panel on Climate Change"


"The rate of loss is now in line with the worst-case scenarios of the Intergovernmental Panel on Climate Change, the world’s leading authority on the climate, according to a paper published on Monday in the journal The Cryosphere.
Thomas Slater, lead author and research fellow at the centre for polar observation and modelling at the University of Leeds, warned that the consequences would be felt around the world. “Sea level rise on this scale will have very serious impacts on coastal communities this century,” he said."


https://www.theguardian.com/environment ... tudy-finds
https://www.the-cryosphere.net/

"To date, these losses have tracked the upper range of climate warming scenarios forecast by the Intergovernmental Panel on Climate Change, which predict an ice sheet sea level contribution of up to 42 cm by 2100"
https://tc.copernicus.org/articles/15/233/2021/

- dspp

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Re: Climate matters

#380666

Postby XFool » January 25th, 2021, 5:40 pm

...Ploughing a lonely furrow, dspp.

anon155742
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Re: Climate matters

#380841

Postby anon155742 » January 26th, 2021, 10:11 am

[img]cdn.theatlantic.com/assets/media/img/posts/2014/09/pop_image_3/003a0341b.jpg[/img]

The biggest climate problem. How is it fixed?

Electric cars etc are nothing unless population is under control.

Should we ban exports of ICE to Africa perhaps?

dspp
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Re: Climate matters

#380878

Postby dspp » January 26th, 2021, 11:53 am

Image

This is how to post an image, using this image of yours as an example.

Yes, I agree population growth is a big unaddressed issue.

regards, dspp
Last edited by dspp on January 26th, 2021, 11:56 am, edited 1 time in total.

dspp
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Re: Climate matters

#380880

Postby dspp » January 26th, 2021, 11:55 am

Global analysis of sea level rise risk to airports
Major airports are already at risk of coastal flooding. Sea level rise associated with a global mean temperature rise of 2 °C would place 100 airports below mean sea level, whilst 1238 airports are in the Low Elevation Coastal Zone. A global analysis has assessed the risk to airports in terms of expected annual disruption to routes. The method integrates globally available data of airport location, flight routes, extreme water levels, standards of flood protection and scenarios of sea level rise. Globally, the risk of disruption could increase by a factor of 17–69 by 2100, depending on the rate of sea level rise. A large number of airports are at risk in Europe, Norther American and Oceania, but risks are highest in Southeast and East Asia. These coastal airports are disproportionately important to the global airline network, by 2100 between 10 and 20% of all routes are at risk of disruption. Sea level rise therefore poses a systemic risk to global passenger and freight movements. Airports already benefit from substantial flood protection that reduces present risk by a factor of 23. To maintain risk in 2100 at current levels could cost up to $57BN.

- etc

https://www.sciencedirect.com/science/a ... via%3Dihub

- dspp

dspp
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Re: Climate matters

#383426

Postby dspp » February 3rd, 2021, 6:09 pm

The Terrifying Warning Lurking in the Earth’s Ancient Rock Record
Our climate models could be missing something big.
"We live on a wild planet, a wobbly, erupting, ocean-sloshed orb that careens around a giant thermonuclear explosion in the void. Big rocks whiz by overhead, and here on the Earth’s surface, whole continents crash together, rip apart, and occasionally turn inside out, killing nearly everything. Our planet is fickle. When the unseen tug of celestial bodies points Earth toward a new North Star, for instance, the shift in sunlight can dry up the Sahara, or fill it with hippopotamuses. Of more immediate interest today, a variation in the composition of the Earth’s atmosphere of as little as 0.1 percent has meant the difference between sweltering Arctic rainforests and a half mile of ice atop Boston. That negligible wisp of the air is carbon dioxide."

Excuse the prose style, it is the Atlantic

https://www.theatlantic.com/magazine/ar ... ry/617793/

- dspp

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Re: Climate matters

#383440

Postby Sorcery » February 3rd, 2021, 6:44 pm

dspp wrote:The Terrifying Warning Lurking in the Earth’s Ancient Rock Record
Our climate models could be missing something big.
"We live on a wild planet, a wobbly, erupting, ocean-sloshed orb that careens around a giant thermonuclear explosion in the void. Big rocks whiz by overhead, and here on the Earth’s surface, whole continents crash together, rip apart, and occasionally turn inside out, killing nearly everything. Our planet is fickle. When the unseen tug of celestial bodies points Earth toward a new North Star, for instance, the shift in sunlight can dry up the Sahara, or fill it with hippopotamuses. Of more immediate interest today, a variation in the composition of the Earth’s atmosphere of as little as 0.1 percent has meant the difference between sweltering Arctic rainforests and a half mile of ice atop Boston. That negligible wisp of the air is carbon dioxide."

Excuse the prose style, it is the Atlantic

https://www.theatlantic.com/magazine/ar ... ry/617793/

- dspp


An embedded contradiction there : contrast

the shift in sunlight can dry up the Sahara, or fill it with hippopotamuses. Of more immediate interest today, a variation in the composition of the Earth’s atmosphere of as little as 0.1 percent has meant the difference between sweltering Arctic rainforests and a half mile of ice atop Boston

and
That negligible wisp of the air is carbon dioxide


So is it variation in sunlight (fairly well proven to cause ice ages) or Carbon dioxide concentrations (unproven to cause anything harmful)?

dspp
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Re: Climate matters

#383446

Postby dspp » February 3rd, 2021, 7:26 pm

Sorcery wrote:
dspp wrote:The Terrifying Warning Lurking in the Earth’s Ancient Rock Record
Our climate models could be missing something big.
"We live on a wild planet, a wobbly, erupting, ocean-sloshed orb that careens around a giant thermonuclear explosion in the void. Big rocks whiz by overhead, and here on the Earth’s surface, whole continents crash together, rip apart, and occasionally turn inside out, killing nearly everything. Our planet is fickle. When the unseen tug of celestial bodies points Earth toward a new North Star, for instance, the shift in sunlight can dry up the Sahara, or fill it with hippopotamuses. Of more immediate interest today, a variation in the composition of the Earth’s atmosphere of as little as 0.1 percent has meant the difference between sweltering Arctic rainforests and a half mile of ice atop Boston. That negligible wisp of the air is carbon dioxide."

Excuse the prose style, it is the Atlantic

https://www.theatlantic.com/magazine/ar ... ry/617793/

- dspp


An embedded contradiction there : contrast

the shift in sunlight can dry up the Sahara, or fill it with hippopotamuses. Of more immediate interest today, a variation in the composition of the Earth’s atmosphere of as little as 0.1 percent has meant the difference between sweltering Arctic rainforests and a half mile of ice atop Boston

and
That negligible wisp of the air is carbon dioxide


So is it variation in sunlight (fairly well proven to cause ice ages) or Carbon dioxide concentrations (unproven to cause anything harmful)?


You are welcome to read the article.

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Re: Climate matters

#383485

Postby Nimrod103 » February 3rd, 2021, 10:31 pm

dspp wrote:
Sorcery wrote:
dspp wrote:The Terrifying Warning Lurking in the Earth’s Ancient Rock Record
Our climate models could be missing something big.
"We live on a wild planet, a wobbly, erupting, ocean-sloshed orb that careens around a giant thermonuclear explosion in the void. Big rocks whiz by overhead, and here on the Earth’s surface, whole continents crash together, rip apart, and occasionally turn inside out, killing nearly everything. Our planet is fickle. When the unseen tug of celestial bodies points Earth toward a new North Star, for instance, the shift in sunlight can dry up the Sahara, or fill it with hippopotamuses. Of more immediate interest today, a variation in the composition of the Earth’s atmosphere of as little as 0.1 percent has meant the difference between sweltering Arctic rainforests and a half mile of ice atop Boston. That negligible wisp of the air is carbon dioxide."

Excuse the prose style, it is the Atlantic

https://www.theatlantic.com/magazine/ar ... ry/617793/

- dspp


An embedded contradiction there : contrast

the shift in sunlight can dry up the Sahara, or fill it with hippopotamuses. Of more immediate interest today, a variation in the composition of the Earth’s atmosphere of as little as 0.1 percent has meant the difference between sweltering Arctic rainforests and a half mile of ice atop Boston

and
That negligible wisp of the air is carbon dioxide


So is it variation in sunlight (fairly well proven to cause ice ages) or Carbon dioxide concentrations (unproven to cause anything harmful)?


You are welcome to read the article.


Most casual observers are led to believe that a rise in World temperature makes the Sahara a drier desert.
I recall reading that modelling indicates the reverse, and that higher temperatures would turn it back into an area dominated by monsoons which once supported huge lakes and extensive tree cover. Lakes, of which Chad is the final remnant, were once extensive all over the Sahara.

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Re: Climate matters

#383498

Postby anon155742 » February 3rd, 2021, 11:34 pm

https://www.yahoo.com/news/study-pandemics-cleaner-air-added-203654559.html
Study: Pandemic's cleaner air added heat to warming planet

dspp
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Re: Climate matters

#383555

Postby dspp » February 4th, 2021, 9:24 am

Nimrod103 wrote:
dspp wrote:
Sorcery wrote:
An embedded contradiction there : contrast


and


So is it variation in sunlight (fairly well proven to cause ice ages) or Carbon dioxide concentrations (unproven to cause anything harmful)?


You are welcome to read the article.


Most casual observers are led to believe that a rise in World temperature makes the Sahara a drier desert.
I recall reading that modelling indicates the reverse, and that higher temperatures would turn it back into an area dominated by monsoons which once supported huge lakes and extensive tree cover. Lakes, of which Chad is the final remnant, were once extensive all over the Sahara.


I may not like the prose style of the article, but it touches a little on the matter of the Sahara.

regards, dspp

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Re: Climate matters

#383604

Postby XFool » February 4th, 2021, 11:27 am

Sorcery wrote:
dspp wrote:Excuse the prose style, it is the Atlantic

https://www.theatlantic.com/magazine/ar ... ry/617793/

An embedded contradiction there : contrast

the shift in sunlight can dry up the Sahara, or fill it with hippopotamuses. Of more immediate interest today, a variation in the composition of the Earth’s atmosphere of as little as 0.1 percent has meant the difference between sweltering Arctic rainforests and a half mile of ice atop Boston

and
That negligible wisp of the air is carbon dioxide

So is it variation in sunlight (fairly well proven to cause ice ages) or Carbon dioxide concentrations (unproven to cause anything harmful)?

What "contradiction"? You mean all events must only ever have ONE single cause? That is before we even involve timescales...

"variation in sunlight" - Solar system mechanics, Milankovitch cycles
"carbon dioxide concentrations" - Earthbound phenomenon (could still be related to above)

BTW. The effects of CO2 in the atmosphere are well known, 19th Century physics.

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Re: Climate matters

#383640

Postby Sorcery » February 4th, 2021, 1:03 pm

XFool wrote:
Sorcery wrote:
dspp wrote:Excuse the prose style, it is the Atlantic

https://www.theatlantic.com/magazine/ar ... ry/617793/

An embedded contradiction there : contrast

the shift in sunlight can dry up the Sahara, or fill it with hippopotamuses. Of more immediate interest today, a variation in the composition of the Earth’s atmosphere of as little as 0.1 percent has meant the difference between sweltering Arctic rainforests and a half mile of ice atop Boston

and
That negligible wisp of the air is carbon dioxide

So is it variation in sunlight (fairly well proven to cause ice ages) or Carbon dioxide concentrations (unproven to cause anything harmful)?

What "contradiction"? You mean all events must only ever have ONE single cause? That is before we even involve timescales...

"variation in sunlight" - Solar system mechanics, Milankovitch cycles
"carbon dioxide concentrations" - Earthbound phenomenon (could still be related to above)

BTW. The effects of CO2 in the atmosphere are well known, 19th Century physics.


That's a little predictable from you Xfool, the contradiction is that we have two supposed catastrophes on either side of a magic normal temperature number. A return to an ice age on the cold side, possible overheating/melting the planet on the warmer side. Yet when we look at the near term (last million years) we have never had a problem with too much warmth. Life given enough water thrives in warmer climates. We have had plenty of evidence of the harm ice ages do.

Sorry my comment was written without yet reading the article but was prompted by dspp's quote.

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Re: Climate matters

#383652

Postby dspp » February 4th, 2021, 2:03 pm

Sorcery wrote:
Sorry my comment was written without yet reading the article but was prompted by dspp's quote.


It is perhaps worth reading the article .....

- dspp

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Re: Climate matters

#383676

Postby XFool » February 4th, 2021, 4:00 pm

Sorcery wrote:
XFool wrote:
Sorcery wrote:An embedded contradiction there :

So is it variation in sunlight (fairly well proven to cause ice ages) or Carbon dioxide concentrations (unproven to cause anything harmful)?

What "contradiction"? You mean all events must only ever have ONE single cause? That is before we even involve timescales...

"variation in sunlight" - Solar system mechanics, Milankovitch cycles
"carbon dioxide concentrations" - Earthbound phenomenon (could still be related to above)

BTW. The effects of CO2 in the atmosphere are well known, 19th Century physics.

That's a little predictable from you Xfool, the contradiction is that we have two supposed catastrophes on either side of a magic normal temperature number. A return to an ice age on the cold side, possible overheating/melting the planet on the warmer side. Yet when we look at the near term (last million years) we have never had a problem with too much warmth. Life given enough water thrives in warmer climates. We have had plenty of evidence of the harm ice ages do.

It seems to me you've missed the point. The Earth's climate has, over its long history, undergone significant changes. These large changes can be brought about by relatively small changes in the environment. These large changes in climate result in very different 'worlds'. Human civilisation has prospered in essentially just one of those various worlds.

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Re: Climate matters

#383749

Postby Sorcery » February 4th, 2021, 9:18 pm

XFool wrote:
Sorcery wrote:
XFool wrote:What "contradiction"? You mean all events must only ever have ONE single cause? That is before we even involve timescales...

"variation in sunlight" - Solar system mechanics, Milankovitch cycles
"carbon dioxide concentrations" - Earthbound phenomenon (could still be related to above)

BTW. The effects of CO2 in the atmosphere are well known, 19th Century physics.

That's a little predictable from you Xfool, the contradiction is that we have two supposed catastrophes on either side of a magic normal temperature number. A return to an ice age on the cold side, possible overheating/melting the planet on the warmer side. Yet when we look at the near term (last million years) we have never had a problem with too much warmth. Life given enough water thrives in warmer climates. We have had plenty of evidence of the harm ice ages do.

It seems to me you've missed the point. The Earth's climate has, over its long history, undergone significant changes. These large changes can be brought about by relatively small changes in the environment. These large changes in climate result in very different 'worlds'. Human civilisation has prospered in essentially just one of those various worlds.


Hello again Xfool,

Not sure I have missed the point. Well aware of the long earth history and varied temperature record. Today we are in an ice house climate, where do you think human's best outcome is? More cold, more warmth?

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Re: Climate matters

#383763

Postby XFool » February 4th, 2021, 10:09 pm

Sorcery wrote:
XFool wrote:It seems to me you've missed the point. The Earth's climate has, over its long history, undergone significant changes. These large changes can be brought about by relatively small changes in the environment. These large changes in climate result in very different 'worlds'. Human civilisation has prospered in essentially just one of those various worlds.

Hello again Xfool,

Not sure I have missed the point. Well aware of the long earth history and varied temperature record. Today we are in an ice house climate, where do you think human's best outcome is? More cold, more warmth?

How about more of the same? :)

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Re: Climate matters

#383816

Postby dspp » February 5th, 2021, 10:09 am

Palcacocha rising

"Human-caused global heating is directly responsible for the threat of a devastating flood in Peru that is the subject of a lawsuit against the German energy company RWE, according to groundbreaking new research."

This is the latest in a long legal & environmental saga
https://www.theguardian.com/environment ... study-says
https://www.theguardian.com/environment ... d-timebomb
https://en.wikipedia.org/wiki/Lake_Palcacocha

Looking at the photos you can see how Huaraz is sprawling

regards, dspp

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Re: Climate matters

#383878

Postby Nimrod103 » February 5th, 2021, 4:17 pm

dspp wrote:Palcacocha rising

"Human-caused global heating is directly responsible for the threat of a devastating flood in Peru that is the subject of a lawsuit against the German energy company RWE, according to groundbreaking new research."

This is the latest in a long legal & environmental saga
https://www.theguardian.com/environment ... study-says
https://www.theguardian.com/environment ... d-timebomb
https://en.wikipedia.org/wiki/Lake_Palcacocha

Looking at the photos you can see how Huaraz is sprawling

regards, dspp


Periodic devastation from catastrophic glacial lake drainage is not a new phenomenon. Friends of mine were very nearly swept away in Greenland by such a flood caused by the build-up of summer meltwaters, which, when reaching a certain size, lift the ice dam, so that the lake drains away in hours. Something that happened about every 10 years. They had moved camp the day before. That was 50 years ago.
People should not live in such dangerous places.


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