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Tags agw , climate change , global warming , global warming denial

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Old 28th January 2018, 05:45 PM   #41
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Not about to be shoved back into a bottle anytime soon, and incapable of doing the same, or capable but with difficulty, are three entirely different things.

We know how to fix it. It's not even difficult. In fact it can even be done at a profit.

Will we do it? Unlikely. But the reason it is unlikely in my opinion, as Neoluddites are not willing to give up their billions in subsidies for types of agriculture that cause AGW any more than the fossil fuel companies are willing to give up their subsidies, has nothing to do with difficulty sequestering CO2.

Can we? Yes
Will we? Unlikely
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Old 11th February 2018, 02:15 PM   #42
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El Nio/La Nia

Looks like we've still got La Nina conditions lingering, though that seems to be shifting/transitional right now, and is most likely to become ENSO - neutral by spring...:

EL NIO/SOUTHERN OSCILLATION (ENSO) DIAGNOSTIC DISCUSSION
http://www.cpc.ncep.noaa.gov/product...ensodisc.shtml

Quote:
Synopsis: A transition from La Nia to ENSO-neutral is most likely during the Northern Hemisphere spring (~55% chance of ENSO-neutral during the March-May season)...

La Nia is anticipated to continue affecting temperature and precipitation across the United States during the next few months (the 3-month seasonal temperature and precipitation outlooks will be updated on Thursday February 15th). The outlooks generally favor above-average temperatures and below-median precipitation across the southern tier of the United States, and below-average temperatures and above-median precipitation across the northern tier of the United States...
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Old 11th February 2018, 04:07 PM   #43
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I can attest to the latter First time in a decade I'm not Down Under
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Old 11th February 2018, 10:30 PM   #44
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Originally Posted by macdoc View Post
I can attest to the latter First time in a decade I'm not Down Under
I can understand that, I'm more in the N. Cal., S. Ore region, though I am contemplating a N. Wa move in the next decade, so the precip rates are more an issue, but it's helping (so far) more than hurting, with some bad luck, it could get less pleasant with a minor ripple of the jet stream (or wiggle of the climate "MoJO" - https://www.climate.gov/news-feature...why-do-we-care -).
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Old 13th February 2018, 12:11 PM   #45
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Confirmation that sea level rise is accelerating.

http://www.pnas.org/content/early/2018/02/06/1717312115
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Old 14th February 2018, 04:15 PM   #46
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Swinging jet stream is crazy as Arctic intrusions to the south alternate with too warm.

-15 last night, +5 today going to +10 next week. Very odd Feb....yet very warm again in the Arctic

Quote:
Is warming in the Arctic behind this year's crazy winter weather?

Jan 11, 2018 - A very new and “hot topic” in climate change research is the notion that rapid warming and wholesale melting of the Arctic may be playing a role in causing persistent cold spells ... Weird and destructive weather was in the news almost constantly during 2017, and 2018 seems to be following the same script.
https://theconversation.com/is-warmi...-weather-89740

gets expensive this erratic weather

Quote:
Billion-Dollar Weather and Climate Disasters: Overview
https://www.ncdc.noaa.gov/billions/

Last edited by macdoc; 14th February 2018 at 04:17 PM.
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Old 1st March 2018, 04:43 AM   #47
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Quote:
Soil cannot halt climate change
Long-term field experiments, dating back as far as 1843, demonstrate that modern carbon emissions cannot be locked in the ground to halt global warming
Date:
February 28, 2018
Source:
Rothamsted Research
Summary:
Unique soils data from long-term experiments, stretching back to the middle of the nineteenth century, confirm the practical implausibility of burying carbon in the ground to halt climate change. The idea of using crops to collect more atmospheric carbon and locking it into soil's organic matter to offset fossil fuel emissions was launched at COP21, the 21st annual Conference of Parties to review the United Nations Framework Convention on Climate Change in Paris in 2015.
more
https://www.sciencedaily.com/release...0228134114.htm

Meanwhile back in the real world.

Quote:
'Wacky' weather makes Arctic warmer than parts of Europe - Reuters
https://www.reuters.com/article/.../...than-parts-of-...
3 days ago - On the northern tip of Greenland, the Cape Morris Jesup meteorological site has had a record-smashing 61 hours of temperatures above freezing so far in 2018, linked to a rare retreat of sea ice in the Arctic winter darkness. “It's never been this extreme,” said Ruth Mottram, a climate scientist at the Danish ...
interesting times...
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Old 1st March 2018, 05:52 AM   #48
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Ok so let's plant 5-6 billion trees...
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Old 1st March 2018, 07:14 AM   #49
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pittance

Quote:
3.04 trillion trees
The study found that there are around 3.04 trillion trees
and we are losing more than that

Quote:
Around 15 billion are lost every year due to deforestation, forest management and changes in land use, the research published in the journal Nature found.

Last edited by macdoc; 1st March 2018 at 07:15 AM.
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Old 1st March 2018, 06:02 PM   #50
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Originally Posted by macdoc View Post
pittance



and we are losing more than that
Astounding.
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Old 11th March 2018, 01:40 PM   #51
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Impact on ocean nutrient flow ....better buy fishing rights near the Antarctic ....climate change is erecting a trade barrier...

Quote:
FLOODING, HEAT WAVES, AND DESTABILIZED ECOSYSTEMS: HERE'S WHAT THE NEXT 100 YEARS OF CLIMATE CHANGE COULD BRING

A new study predicts a steep drop in fisheries' production. It's the latest in a growing body of research to show how changes to the Earth's ecosystems will cause disruption to its inhabitants.
https://psmag.com/environment/climate-change-timeline

snip

Quote:
The disappearance of sea ice disrupts the flow of nutrients to northern marine ecosystems, says study author J. Keith Moore, a professor of Earth system science at the University of California–Irvine and one of the developers of the Community Earth System Model that enables researchers to predict further into the future. As the ice melts, the production of phytoplankton, a microscopic plant-like organism at the bottom of the marine food chain, increases around Antarctica. However, as the ice melts, the phytoplankton absorb more sunlight and trap more nutrients in the Antarctic sea area. This causes significantly more nutrients to sink to the deep southern ocean instead of moving northward to other marine ecosystems. "In upper oceans, everywhere to the north, you start to see this steadily declining nutrient concentration," Moore says.
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Old 13th March 2018, 11:00 PM   #52
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Originally Posted by macdoc View Post
Impact on ocean nutrient flow ....better buy fishing rights near the Antarctic ....climate change is erecting a trade barrier...



https://psmag.com/environment/climate-change-timeline

snip
I wonder about the extent of the willingness of the international community to establish a shifting network of global, protected, international, aquaculture nurseries and a system of sustainable international harvest seasons/permits/policing. Regardless of whether or not they want to deal (seriously and appropriately) with the causes of climate change, they are going to have to adapt to the realities of climate change consequences.
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Old 31st July 2018, 08:03 AM   #53
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Maybe the daily Trumputistan show is supressing the real desasters...

Global warming and it's desasters are happening, right now.
Many new record temperatures across the northern hemisphere.
Draught in europe and elsewhere.
German farmers expecting crop failure up to 70%, calling for compensations of one billion euros.
Etc.

Quote:
Extreme weather, including record temperatures and heatwaves, drought and disastrous precipitation, has marked the first half of summer in the northern hemisphere. This has had widespread impacts on human health, agriculture, ecosystems and infrastructure and led to devastating wildfires.
...
On June 28, Quriyat, just south of Muscat, on the coast of Oman, recorded a 24-hour minimum temperature of 42.6C, meaning that the coolest overnight temperature did not drop below that level. Although highest low temperature is not currently monitored as a category in the WMO Weather and Climate Extremes Archive, it is believed to be the highest such temperature ever recorded by a thermometer.
https://public.wmo.int/en/media/news...r-high-impacts


42.6C lowest at night, good lord.

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Old 15th August 2018, 07:37 PM   #54
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The hottest-ever record was set in 1913. Why hasn't a new record been set since then?

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Old 15th August 2018, 08:21 PM   #55
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Originally Posted by Fudbucker View Post
The hottest-ever record was set in 1913. Why hasn't a new record been set since then?
Is that the irrelevant to global temperatures and climate Death Valley temperature? The hottest global temperature was 2016.
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Old 15th August 2018, 09:52 PM   #56
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Originally Posted by Fudbucker View Post
The hottest-ever record was set in 1913. Why hasn't a new record been set since then?
Just wait.

But those records are by definition anomalies anyway, a particular location on Earth at one time. In the Guinness World Records it's the "hottest recorded temperature on Earth".

Last edited by Venom; 15th August 2018 at 09:53 PM.
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Old 16th August 2018, 06:28 AM   #57
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Originally Posted by Fudbucker View Post
The hottest-ever record was set in 1913. Why hasn't a new record been set since then?
Hottest ever record for what?
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Old 16th August 2018, 12:41 PM   #58
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Originally Posted by Fudbucker View Post
The hottest-ever record was set in 1913. Why hasn't a new record been set since then?
Probably a recording or instrument error. It is possible, but pretty unlikely to be true. The undisputed highest ever record temp was in 2013 in Death Valley.

However, what does this have to do with AGW? Which is an average increase in temps over the entire planet in a 30 year + period? One high temp for a couple hours, even if it was true on one tiny canyon in California, is a far cry from the whole world averaged over 30+ years!

I think what has happened is you were reading some merchants of doubt sponsored bull pucky designed to obfuscate the reality of AGW.
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Old 16th August 2018, 02:20 PM   #59
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Originally Posted by Red Baron Farms View Post
Probably a recording or instrument error. It is possible, but pretty unlikely to be true. The undisputed highest ever record temp was in 2013 in Death Valley.

However, what does this have to do with AGW? Which is an average increase in temps over the entire planet in a 30 year + period? One high temp for a couple hours, even if it was true on one tiny canyon in California, is a far cry from the whole world averaged over 30+ years!

I think what has happened is you were reading some merchants of doubt sponsored bull pucky designed to obfuscate the reality of AGW.
I don't doubt agw. Just was curious why record has lasted so long.
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Old 16th August 2018, 03:02 PM   #60
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Originally Posted by Fudbucker View Post
I don't doubt agw. Just was curious why record has lasted so long.
AGW brings higher global average temperature but also higher variability. There are regions of the planet that aren't warming at an important rate. Also, the higher variability makes both high and low temperatures to reach extreme records. They key is that record-breaking highs fourfold record-breaking lows, as it is consistent with higher variability in a context of average temperature going higher and higher.

That said. There's the problem that so far this analysis doesn't take into account variations in the very same weather stations that give those old and new records. Bad placement, bad maintenance, etc can bring anomalous values. That is currently extremely rare in the First World, but not in 1913.

I don't have the faintest idea which old record are you talking about, but if it is an extremely high temperature in an extremely dry place like a desert then that temperature heavily depends on solar irradiation. And that hasn't basically change since 1913.
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Old 16th August 2018, 03:37 PM   #61
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Originally Posted by aleCcowaN View Post
AGW brings higher global average temperature but also higher variability. There are regions of the planet that aren't warming at an important rate. Also, the higher variability makes both high and low temperatures to reach extreme records. They key is that record-breaking highs fourfold record-breaking lows, as it is consistent with higher variability in a context of average temperature going higher and higher.

That said. There's the problem that so far this analysis doesn't take into account variations in the very same weather stations that give those old and new records. Bad placement, bad maintenance, etc can bring anomalous values. That is currently extremely rare in the First World, but not in 1913.

I don't have the faintest idea which old record are you talking about, but if it is an extremely high temperature in an extremely dry place like a desert then that temperature heavily depends on solar irradiation. And that hasn't basically change since 1913.
It's what pops up when you google "What's the hottest ever temperature?"

"134.1 F
According to the World Meteorological Organization's (WMO), the highest temperature ever recorded was 56.7 C (134.1 F) on 10 July 1913 in Furnace Creek (Greenland Ranch), California, USA. According to the WMO this temperature may have been the result of "a sandstorm that occurred at the time."


I assumed that was correct. Your explanation makes sense. I wondered whether it was a freak weather phenomenon that caused the high temperature.
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Old 16th August 2018, 04:02 PM   #62
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On 13 September 1922, a high temperature of 58.0 C (136.4 F) was recorded in Al-ʿAzīzīyah. This was long considered the highest temperature ever measured on Earth.[2][3][4]
However, that reading was controversial:[5][6][7]
  1. The weather station was first in 'Aziziya town, but, in 1919, it was moved to a hilltop fort, where the weather station was set up on black tarmac, which would have absorbed more sunlight and made the air there artificially hotter, explaining a period of very hot readings there from 1919 to 1928.
  2. Shortly before the record reading on 13 September 1922, the weather station's usual maximum thermometer had been damaged and then replaced by an uncalibrated, ordinary maximum-minimum thermometer such as often used in greenhouses.
  3. On 11 September 1922, the usual record keeper was replaced by an inexperienced observer, who was untrained in the use of the thermometer and the record log. This is known by the change in handwriting on the log sheets and by the high and low temperatures being recorded in the wrong columns. The thermometer used sliding colored cylinders to record maximum and minimum temperatures, and these cylinders were about 7 to 8 degrees Celsius long on the thermometer scale. The WMO now believes that the inexperienced observer was reading from the wrong end of the high-temperature cylinder inside the thermometer, getting a reading which was 7 to 8 degrees too high.
  4. On 13 September 2012, the World Meteorological Organization announced that the WMO Commission of Climatology World Archive of Weather and Climate Extremes had found that the record was invalid. Its world record for hottest temperature is now 56.7 C (134.1 F), recorded on 10 July 1913 at Greenland Ranch in Death Valley, California in the United States.[8]
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Old 19th August 2018, 03:31 PM   #63
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Quote from article: "In Broken Hill, 935km (580 miles) west of Sydney, groups of emus have been seen "running laps of the main street, eating gardens and gate crashing football matches", ABC News reports.

Ms Singleton, who works for the Rescue and Rehabilitation of Australian Native Animals, said: "We've had 14 on a sporting oval. They've been out there for weeks - the locals in that area are giving them food and water."

https://www.bbc.co.uk/news/world-aus...239791?SThisFB

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Old 20th August 2018, 08:12 PM   #64
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Global warming can make extreme weather worse. Now scientists can say by how much.

snippet:

Quote:
Otto is one of the leading scientists in the rapidly evolving field of extreme events attribution. The discipline is being driven by an increasing focus among academics, by better data collection worldwide and by open-source computer models that allow researchers ready access to complex climate simulations, particularly of what Earth’s temperatures likely would have looked like without the profusion of carbon dioxide and other greenhouse gases over the last century.

Many of the researchers in the field are determined to ensure that experts, not amateurs, drive the discussion of unusual weather. “If the answer is not given by scientists, it will be given by politicians or someone with an agenda,” Otto said. “We want to make sure there is scientific evidence in this debate.”
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Old 19th December 2018, 11:35 AM   #65
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No surprise to any of us that were paying attention 2 new papers confirm there was never any pause in global warming
https://www.sciencedaily.com/release...1219093922.htm

Of note, one is co-authored by Mike Mann, who's been somewhat sensitive to criticism of several papers that seemed to accept the reality of such a pause.
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Old 19th December 2018, 12:28 PM   #66
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Some more discussion here, with links to both papers.

https://tamino.wordpress.com/2018/12...pretend-pause/
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Old 20th December 2018, 04:55 AM   #67
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Deleted - didn't read down as far as Lomiller's follow up. Tamino has been saying this all along.

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Old 24th December 2018, 09:45 PM   #68
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Greta Thunberg's challenge/message:


https://www.youtube.com/watch?v=HzeekxtyFOY


I expected that perhaps this would have appeared somewhere in these forums but that doesn't appear to be the case. Therefore, even though this discussion appears to have "died", I'm adding the link for those that might be interested and haven't yet seen it.
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Old 29th December 2018, 01:28 PM   #69
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End of Year, Greetings!

I hope a merry holiday season has been had by all!

A new year approaches, and I wish good tidings, health, and wealth for all!


Time is tight for the next week or so, but I look forward to catching up with myself and you all in a brighter, more hopeful new year.
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Old 7th January 2019, 12:37 AM   #70
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Yes was a wonderful Winter Solstice for all us pagans
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Old 25th February 2019, 03:48 PM   #71
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This might have us all "looking for shelter on a cloudless day!"

Earth could warm by 14C as growing emissions destroy crucial clouds - https://www.newscientist.com/article...rucial-clouds/

Quote:
If we keep burning fossil fuels with reckless abandon, we could trigger a cloud feedback effect that will add 8C on top of all the warming up to that point. That means the world could warm by more than 14C above the pre-industrial level.

Needless to say, this would be cataclysmic. For instance, large parts of the tropics would become too hot for warm-blooded animals, including us, to survive.

The good news is that if countries step up their efforts to cut emissions we should avoid finding out if this idea is correct. I dont think we will get anywhere close to it, says Tapio Schneider at the California Institute of Technology, Pasadena, who led the research...

New Scientist is too much like OMNI, a bit too sensationalist for my daily reading. but there is the NatGeo paper
"Possible climate transitions from breakup of stratocumulus decks under greenhouse warming"
Tapio Schneider, Colleen M. Kaul & Kyle G. Pressel
Nature Geoscience volume 12, pages164168 (2019)

Quote:
Abstract
Stratocumulus clouds cover 20% of the low-latitude oceans and are especially prevalent in the subtropics. They cool the Earth by shading large portions of its surface from sunlight. However, as their dynamical scales are too small to be resolvable in global climate models, predictions of their response to greenhouse warming have remained uncertain. Here we report how stratocumulus decks respond to greenhouse warming in large-eddy simulations that explicitly resolve cloud dynamics in a representative subtropical region. In the simulations, stratocumulus decks become unstable and break up into scattered clouds when CO2 levels rise above 1,200 ppm. In addition to the warming from rising CO2 levels, this instability triggers a surface warming of about 8 K globally and 10 K in the subtropics. Once the stratocumulus decks have broken up, they only re-form once CO2 concentrations drop substantially below the level at which the instability first occurred. Climate transitions that arise from this instability may have contributed importantly to hothouse climates and abrupt climate changes in the geological past. Such transitions to a much warmer climate may also occur in the future if CO2 levels continue to rise.
Depending upon the circumstances 1200ppm, is not near comfortably high enough to avoid reaching within the next 100 years, particularly if we stick to an accelerating definition of BAU.
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Old 26th February 2019, 01:19 AM   #72
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Well, yesterday the UK had its first Winter temperature above 20 Celsius in several places.
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Old 26th February 2019, 10:22 AM   #73
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Originally Posted by macdoc View Post
Yes was a wonderful Winter Solstice for all us pagans
(sorry to leave you hanging there!) it was fine for all the rural and provincial heathens hereabouts as well, even those of us who are at least nominally mainstream in our religious inclinations.
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Old 26th February 2019, 10:37 AM   #74
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Originally Posted by Mr Clingford View Post
Well, yesterday the UK had its first Winter temperature above 20 Celsius in several places.
We've officially ended the California drought with a fire-hosing set of successive storm events over the last couple of months (big rains a few months after big fires is not a good combination). These even managed to refill some reservoirs (too bad we don't have more of these set up to catch these types of events and use the water to help recharge the ground water systems). I'm hearing about signs that we are looking at another El Nino firing up this spring, The west Coast of the US seems to have a lot more stormy weather in the transitional period ahead of El Nino events, but I'm wondering how much of this is biased anecdotal perception.
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Old 26th February 2019, 11:15 AM   #75
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Also the biggest swing in temperature each day for winter, the UK doesn't normally experience 20C temperature swings from between day and night. It's brought forward the blossom and the bulb flowering, which is probably not good either.
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Old 1st March 2019, 10:44 AM   #76
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Arctic ocean likely to be free of summer sea ice by 2050.

https://agupubs.onlinelibrary.wiley....9/2018GL081393

Previous results suggested a date abound 2050 +/- 20 years. The new result finds that much of this variation is associated with the Interdecadal Pacific Oscillation. A positive phase is associated with less artic sea ice, a negative phase is associated with more and we appear to be entering a positive phase which points to an ice free arctic prior to 2050.


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We found that a natural cycle called the Interdecadal Pacific Oscillation, or IPO for short, is particularly important. Arctic sea‐ice loss is faster when the IPO is moving from its cold to warm phase and slower when the IPO is moving from its warm to cold phase. This is because variations in the IPO cause changes in atmospheric wind patterns, which alter the amount of heat that is transported into the Arctic. Observations show that the IPO started to shift from its cold to warm phase in the past few years. If this shift continues, our results suggest that there is an increased chance of accelerated sea‐ice loss over the coming decades.
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Old 1st March 2019, 11:12 AM   #77
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Originally Posted by Trakar View Post
Earth could warm by 14C
Now that starts being close to a runaway warming scenario.
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Old 2nd March 2019, 01:27 PM   #78
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Originally Posted by Belz... View Post
Now that starts being close to a runaway warming scenario.
Nah, not if you are talking Venus type runaway, but it will definitely pump things into and above PETM conditions. High enough and long enough to dramatically alter almost all of the planet's biomes, not to mention the plant and animal life that makes up these biomes. It will be too fast for flora and fauna to adapt or evolve to meet such challenges. The only biomes left largely unchanged will be some of the relatively isolated extreme environments. I keep hoping we aren't stupid enough to actually let things go that far,...and then I read the news.
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Old 25th March 2019, 05:34 PM   #79
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I reckon if I look back a thread or two on this subject, I'd find a load of people telling me that CO2 emissions were flat or falling.

Subsequent to the GFC, that was true, but seeing it as a trend has proven spectacularly wrong.

Two years in a row, emissions have increased, with 2018 showing an increase very much in line with global GDP. https://www.theguardian.com/environm...emissions-rise

Given the continuing rise and Trump's anti-AGW policies being enacted, I reckon you can lock in about 3 degrees, never mind the 2 in the Paris Accord.

I think this fight is just about over - buy high ground, sit back and watch.
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Old 25th March 2019, 06:13 PM   #80
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Originally Posted by The Atheist View Post
I reckon if I look back a thread or two on this subject, I'd find a load of people telling me that CO2 emissions were flat or falling.
That imaginary "load of people" will tell you that globally CO2 emissions continued to increase with the main sources being the USA, China and India. The EU though has decreased CO2 emissions since 1990. This is well known.
Global Carbon Budget 2018

Note that CO2 emissions vary, e.g. due to economic forces, so looking at a couple of years is not useful. You need to look at periods that smooth out economic cycles. Picking out last 2 years ignores the plateau from 2014-16.

Last edited by Reality Check; 25th March 2019 at 06:20 PM.
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