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Evidence for global warming. (Read 83639 times)
lee
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Re: Evidence for global warming.
Reply #255 - Jun 16th, 2019 at 6:43pm
 
Robot wrote on Jun 16th, 2019 at 6:23pm:
It's "irreversible" in that there's nothing that humans could do to stop the Earth from becoming a hothouse. It doesn't mean that the Earth will be a permanent hothouse, although it may last for millennia, nor does it mean that the warming will continue to go on forever until the oceans boil and we end up like Venus.



So it's a reversible irreversible?  Grin Grin Grin Grin

You would think climate scientists would be able to enunciate their thoughts or prognostications or predictions or whatever they are. Wink
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Robot
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Re: Evidence for global warming.
Reply #256 - Jun 16th, 2019 at 7:47pm
 
Ajax wrote on Jun 16th, 2019 at 10:18am:
Medieval warm period warmer than today.


Dahl_Jensen et al 1998, Wagner & Melles 2001, Kaplan et al 2002, Jiang et al 2002, Moore et al 2001, Grudd et al 2002, Seppa & Birks 2002, Dansgaard et al 1975, Korhola et al 2000, Naurzbaev et al 2002, Vaganov et el 1996, Briffa et al 1998, Scweingruber & Briffa 1996, Knudsen et al 2004, Grinsted et al 2006, Besonen et al 2008, Wagner et al 2008, Vare et al 2009, Norgaard-Pedersen & Mikkelsen 2009, Andresen et al 2004, Vinther et al 2010, Kobashi et al 2010, Kobashi et al 2008, Stuiver et al 1995, Dansgaard et al 1975, Jenings & Weiner 1996, Johnsen et al 2001, Vinther et al 2010, Larsen et al 2011, Hill et al 2001, Joynt & Wolfe 2001, Hantemirov & Shiyatov 2002, Andersson et al 2003, Helama et al 2005, Mazepa 2005, Weckstrom et al 2006, Jiang et al 2007, Zabenski & Gajewski 2007, Grudd 2008, Justwan et al 2008, Scire et al 2008, Axford et al 2009, Bjune et al 2009, Cook et al 2009, Fortin & Gajewski 2010, Buntgen et al 2011, Divine et al 2011, Ran et al 2011, Velle et al 2011, D’Andrea et al 2012, Esper et al 2012


If any of those papers contain a reconstruction of global temperatures during the Medieval Warm Period, then I'll take a look at them.

In the meantime, here's a paper that collects several reconstructions.

Mann et al 2008
Proxy-based reconstructions of hemispheric and global surface temperature variations over the past two millennia

https://www.pnas.org/content/105/36/13252

...

None of the reconstructions presented there put the Medieval Warm Period as warmer than 2008, let alone 2019.
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« Last Edit: Jun 16th, 2019 at 8:03pm by Robot »  
 
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lee
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Re: Evidence for global warming.
Reply #257 - Jun 16th, 2019 at 7:55pm
 
Michael E Mann. The author of the "Hockeystick" that even the IPCC don't use any more. Grin Grin Grin Grin Grin Grin
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Bobby.
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Re: Evidence for global warming.
Reply #258 - Jun 28th, 2019 at 7:17am
 
https://www.accuweather.com/en/weather-news/dangerous-extreme-heat-wave-tightens...


Relief from the record-breaking heat across central Europe will be brief as the sweltering conditions holding firm across France and Spain surge back to the north in the final days of June.

Officials are investigating whether the heat took a deadly turn, after the body of a 72-year-old homeless man was found near a train station in Milan, Rome, on Thursday morning, according to BBC News. Temperatures have been soaring past 33 C (into the 90s F) daily since Monday.

Wednesday was one for the record books across Europe with daily, June and all-time temperature records broken.

This included the highest temperature ever recorded during the month of June in Germany, Poland and the Czech Republic.

Temperatures soared to 38.2 C (100.8 F) at Radzyń, Poland, on Wednesday, while Coschen station (Berlin-Brandenburg) reached 38.6 C (101.5 F) in Germany. The all-time highest temperature ever recorded in Germany remains 40.3 C (104.5 F), set in Kitzingen on Aug. 7, 2015.


In the Czech Republic, Doksany recorded a high of 38.9 C (102.0 F). The country's previous record June high was 38.2 C (100.8 F), which was set at Brno-Žabovřesky on June 22, 2000.

A total of 137 stations out of 150 with at least 30 years of data set daily record highs on Wednesday in the Czech Republic. Out of those stations, 41 broke June records for their individual locations.

The average high temperature across all of France was 34.9 C (94.8 F) on Wednesday, the highest value recorded in all of June. With a high of 40.9 C (105.6 F), Clermont-Ferrand was among the few communities across France that set an all-time record high also on this day.

In Spain, site-specific June record highs were also broken in Molina de Aragón and Daroca on Wednesday.

France joined the list of countries setting June record highs when temperatures soared to 42.0 C (107.6 F) at Grospierres on Thursday. Narbonne in the southern half of the country previously held the record when temperatures rose to 41.5 C (106.7 F) in June 2003.

Heat to hold firm across France, surge back to Germany and Poland

Cooler air is currently bringing much-needed heat relief to central Europe, but the heat is holding firm across Spain and France and will surge back to the north in the final days of June.

Friday could be the hottest day of the week in France, as temperatures approach 43 C (110 F) across the interior of southeast France. AccuWeather RealFeel® Temperatures may briefly climb above that mark in these locations when factoring in the combination of temperature, humidity and strong June sunshine.

Paris experienced its hottest day so far this year on Wednesday, when temperatures rose to 34.6 C (94 F). Temperatures will continue to challenge that mark daily through Saturday.
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The_Barnacle
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Re: Evidence for global warming.
Reply #259 - Jun 28th, 2019 at 4:15pm
 
Once again. By itself this isn't evidence for global warming.
This is a local weather anecdote
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Bobby.
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Re: Evidence for global warming.
Reply #260 - Jun 28th, 2019 at 4:54pm
 
The_Barnacle wrote on Jun 28th, 2019 at 4:15pm:
Once again. By itself this isn't evidence for global warming.
This is a local weather anecdote


This website says.

https://www.theguardian.com/world/2019/jun/25/highs-of-45c-expected-in-france-as...

Stefan Rahmstorf,
Monthly records were now falling five times as often as they would in a stable climate, Rahmstorf said, adding this was “a consequence of global warming caused by the increasing greenhouse gases from burning coal, oil and gas”.


https://www.pik-potsdam.de/news/in-short/heat-waves-are-on-the-rise-pik-statemen...
(Stefan Rahmstorf, co-chair of Earth System Analysis at the Potsdam Institute for Climate Impact Research (PIK) and Professor at Potsdam University, Germany)
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lee
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Re: Evidence for global warming.
Reply #261 - Jun 28th, 2019 at 4:58pm
 
Perhaps Rahmsdorf can tell us last time we had a "stable" climate.
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Bobby.
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Re: Evidence for global warming.
Reply #262 - Jun 28th, 2019 at 4:59pm
 
lee wrote on Jun 28th, 2019 at 4:58pm:
Perhaps Rahmsdorf can tell us last time we had a "stable" climate.



That would be interesting.

Do I get any awards for being fair and balanced -
showing evidence for both sides of the debate?
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lee
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Re: Evidence for global warming.
Reply #263 - Jun 28th, 2019 at 5:02pm
 
Bobby. wrote on Jun 28th, 2019 at 4:59pm:
Do I get any awards for being fair and balanced -
showing evidence for both sides of the debate?



Only from sceptics. Wink
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Bobby.
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Re: Evidence for global warming.
Reply #264 - Jun 28th, 2019 at 5:08pm
 
lee wrote on Jun 28th, 2019 at 5:02pm:
Bobby. wrote on Jun 28th, 2019 at 4:59pm:
Do I get any awards for being fair and balanced -
showing evidence for both sides of the debate?



Only from sceptics. Wink



Barny is not happy with whatever I do.
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lee
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Re: Evidence for global warming.
Reply #265 - Jun 28th, 2019 at 5:22pm
 
Bobby. wrote on Jun 28th, 2019 at 5:08pm:
Barny is not happy with whatever I do.


Because he is a true believer.
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Robot
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Re: Evidence for global warming.
Reply #266 - Jun 28th, 2019 at 5:41pm
 
Bobby. wrote on Jun 28th, 2019 at 4:59pm:
Do I get any awards for being fair and balanced -
showing evidence for both sides of the debate?


The only debate that matters is the scientific debate, and the only sides that matter are:
1. The climate scientists who argue their research points to anthropogenic warming
2. The climate scientists who argue their research points to natural warming (or cooling, or no change)

Everyone else belongs in the peanut gallery.
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Bobby.
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Re: Evidence for global warming.
Reply #267 - Jun 28th, 2019 at 5:57pm
 
Robot wrote on Jun 28th, 2019 at 5:41pm:
Bobby. wrote on Jun 28th, 2019 at 4:59pm:
Do I get any awards for being fair and balanced -
showing evidence for both sides of the debate?


The only debate that matters is the scientific debate, and the only sides that matter are:
1. The climate scientists who argue their research points to anthropogenic warming
2. The climate scientists who argue their research points to natural warming (or cooling, or no change)

Everyone else belongs in the peanut gallery.




No they don't - everyone is free to express their opinion
especially on this forum - even you.
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lee
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Re: Evidence for global warming.
Reply #268 - Jun 28th, 2019 at 5:59pm
 
Robot wrote on Jun 28th, 2019 at 5:41pm:
The only debate that matters is the scientific debate, and the only sides that matter are:
1. The climate scientists who argue their research points to anthropogenic warming
2. The climate scientists who argue their research points to natural warming (or cooling, or no change)

Everyone else belongs in the peanut gallery.


And then there are the bristlecone scientists who tack thermometer data on the end of their dendrocological data, even though the bristlecone was only recently cut. AKA "Mike's Nature Trick"

Gives rise to the phrase "Ya seen one tree ya seen "Yamal"."
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Captain Nemo
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Re: Evidence for global warming.
Reply #269 - Jun 28th, 2019 at 6:36pm
 
Europe heatwave sees temperatures soar to record highs as wildfires take hold in Spain


...
PHOTO: Although heatwaves are not uncommon in Europe, experts say climate change is increasing their frequency and intensity. (AFP: Alberto Pizzoli)

An intense heatwave has sent temperatures across Europe soaring to record highs, with central Europe forecast to hit the mid 40s on Friday.


New records have already been set in Poland and the Czech Republic, which both reached their highest temperatures for June on Wednesday, while Austria expects to have its warmest June on record — 4.5 degrees Celsius above the long-term average.

In Germany, 51 observing stations broke their June temperature records this week, according to the World Meteorology Organization, but there has been some relief for northern Germany with Berlin dropping from 37C on Wednesday down to just 21C on Thursday.

Across the continent, zookeepers struggled to keep animals cool, feeding frozen treats to animals and providing water tubs and hoses to cool down elephants and primates.

Temperatures have climbed past 44C in northern Spain and southern France, driving people to seek refuge in the sea or nearby rivers, with it predicted to rise even higher on Friday.

French authorities put restrictions on vehicles to reduce pollution and schools have been closed.

French Health Minister Agnes Buzyn said the conditions were unprecedented and emergency services were overwhelmed with patients.

Chicken manure wildfire takes hold in Spain
Spanish firefighters are battling wildfires in Catalonia, the worst the state has seen in two decades, according to the local government.

Hundreds of firefighters have struggled to contain the blaze in north-eastern Spain, with it already spreading over 5,500 hectares and forcing the evacuation of 53 residents.

...
PHOTO: Firefighters say high temperatures and a drop in humidity will likely fan the flames in Spain. (AP: Jordi Borras)
Miquel Buch, the Regional Interior Minister, said 20,000 hectares were under threat.

Mr Buch said authorities suspected the cause of the outbreak was a deposit of improperly stored chicken manure at a farm in the village of Torre de l'Espanyol that high temperatures caused to combust.

Firefighters said high temperatures, low humidity and high winds fanned the flames.

Television images showed horses and sheep incinerated on a farm that had stood in the path of the fire.

Emergency service calls 'on the rise'


PHOTO: Temperatures soared towards 44 degrees Celsius in parts of Spain and France. (AP: Alvaro Barrientos)
As temperatures climbed towards 44 degrees in parts of central Europe, French authorities extended restrictions on vehicles, already imposed in Paris and Lyon, to Marseille and Strasbourg in an effort to curb air pollution.

Some schools postponed summer exams, and parts of northern France were put on drought alert, with water supplies to businesses, farmers and ordinary residents restricted.

French Agriculture Minister Didier Guillaume announced a ban on the transportation of animals until the heatwave had ended.

Grid operator RTE said French electricity demand on Thursday (local time) was close to a summer record seen two years ago, as people turned on fans and coolers to full blast for relief from the scorching temperatures.

"Calls to the emergency services are on the rise nationwide," said Jerome Saloman, head of national public health.

"We are seeing the beginning of a clear impact of the heatwave. For us, the worst is still to come."

Mr Saloman said four drownings had been recorded in France since the start of the week directly linked to the heatwave as people try to cool themselves.

However, the full toll directly linked to the heatwave would only be known in the days or weeks ahead.

Regions placed on red alert

...
PHOTO: This heatwave is unprecedented and exceptional in its intensity, the French Health Minister says. (AP: Alessandra Tarantino)
Ms Buzyn said four administrative regions in southern France had been placed on red alert, the highest crisis level, with 76 others on orange alert.

This heatwave was unprecedented and exceptional in its intensity, the Health Minister told a news conference.

The red alert would mean school outings, outdoor sport and other festive activities are suspended or postponed. Ms Buzyn cautioned joggers and other sport lovers to curb their activities.

The unusually hot weather in June is caused by a swathe of warm air from Africa.

Although heatwaves are not uncommon in Europe, experts say climate change is increasing their frequency and intensity.

"This increase in heat extremes is just as predicted by climate science as a consequence of global warming caused by the increasing greenhouse gases from burning coal, oil, and gas," said Stefan Rahmstorf, a climatologist at the Potsdam Institute for Climate Impact Research.


https://www.abc.net.au/news/2019-06-28/europe-heatwave-soaring-temperatures-caus...
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