Archives par mot-clé : Heatwaves

Northern Europe July Temperature Sees NO WARMING Over Past Decades. Global July Not A Record High!

by P. Gosselin, August 20, 2019 in NoTricksZone


Parts of Europe have seen a couple of brief but intense heat waves this summer, and so some of the public got brainwashed by the media into thinking the continent’s summer climate is rapidly getting hotter and that all this is the new normal.

Yet, when we examine the unaltered data from the Japan Meteorology Agency (JMA) for locations in northern Europe that have long-term datasets available, we see there has been no July warming trend over the past decades. Media reports suggesting otherwise are nonsense.

Ireland

Looking at 6 stations in Ireland, we have the following for July:

 

Data source: JMA.

Overall, Ireland’s mean July temperatures have been cooling off modestly over the past 3 decades and more, even though three stations are located at airports.

Sweden

Analysis: What’s Really Going On In Greenland

by C. Martz, August 12, 2019 in ClimateChangeDispatch


As I’m sure many of my readers are aware, Europe has been having an odd summer as far as temperatures are concerned. The continent has had two major heatwaves this summer; one was in June and the other was in July.

In addition, Greenland has also seen some exceptional “warmth” and lots of ice melt this summer as compared to more recent years.

So, what’s going on? Is climate change to blame? Or, is this a freak of nature?

As with most complicated things in science, the truth is somewhere in between and is not just one way or the other. I hate saying that as a “black and white” person, but it’s an unfortunate fact. One can not make a preconceived notion based on one weather event without looking at a.) the big picture, b.) mechanism, and c.) long-term trends.

The upper air pattern over Europe and Greenland is opposite of what’s been occurring in much of the United States. The U.S. has only had one major heatwave this year, and that in and of itself caused mass hysteria.

AccuWeather Founder/CEO: No Evidence Heatwaves More Common From ‘Climate Change’

by Dr. J. N. Myers, Auhsut 8, 2019 in ClimateChangeDispatch


First, and most importantly, we warn people all the time in plain language on our apps and on AccuWeather.com about the dangers of extreme heat, as well as all hazards.

Furthermore, that is the reason we developed and patented the AccuWeather RealFeel® Temperature and our recently expanded AccuWeather RealFeel® Temperature Guide, to help people maximize their health, safety and comfort when outdoors and prepare and protect themselves from weather extremes.

The AccuWeather RealFeel Temperature Guide is the only tool that properly takes into account all atmospheric conditions and translates them into actionable behavior choices for people.

Second, although average temperatures have been higher in recent years, there is no evidence so far that extreme heatwaves are becoming more common because of climate change, especially when you consider how many heatwaves occurred historically compared to recent history.

New York City has not had a daily high temperature above 100 degrees since 2012, and it has had only five such days since 2002.

However, in a previous 18-year span from 1984 through 2001, New York City had nine days at 100 degrees or higher.

UK Record Temperature Stays Intact

by P. Homewood, July 26, 2019 in NotaLotofPeopleKnowThat

The Met Office have been desperate to declare a new UK temperature record this week, but the weather gods said no!

The Cambridge temperature fell well short of the all time record of 38.5C set at Faversham in 2003.

They feebly claim that the Cambridge temperature is still a record for July. Climatologically July is a warmer month than August, when the Faversham record was set, so by all accounts the 2003 heatwave was more extreme than yesterday’s.

The cause of the high temperatures is very clear. Not only was hot air being drawn up from Spain, but a deep area of low pressure to the west powered up the jet stream to bring that hot air north very quickly, before the heat had a chance to dissipate.

New York Heatwaves Like This Week’s Are The Norm

by P. Homewood, July 22, 2019 in NotaLotofPeopleKnowThat


Extremely hot weather has started to hit most of the United States, with temperatures set to peak over the weekend, meteorologists say.

The heatwave could affect about 200 million people in major cities like New York, Washington and Boston in the East Coast, and the Midwest region too.

In some places, temperatures could be close to or exceed 100F (38C). Parts of Canada are also being hit.

Experts link more frequent heatwaves in recent years to climate change.

The world experienced its hottest June on record this year, with an average temperature worldwide of 61.6F (16.4C), according to new data.

Earlier this month, the US state of Alaska, part of which lies inside the Arctic Circle, registered record high temperatures.

https://www.bbc.co.uk/news/world-us-canada-49049378

 

As I revealed last week, the Alaska claim was fake.

But what about this latest heatwave? Is it anything unusual?

Well not in New York, that’s for sure.

The temperature in Central Park never even got near 100F, peaking at 95F yesterday.

 

http://climod2.nrcc.cornell.edu/

SCE INFO : 45,9°C un record en France ?

by SCE-INFO, 3 juillet 2019 in ScienceClimatEnergie


De nombreux médias l’ont annoncé, tout comme le site MétéoFrance : la barre des 45 °C aurait été franchie pour la première fois en France vendredi 28 juin 2019. On a atteint 45,9 °C à Gallargues-le-Montueux, à l’ouest du Gard, à 16 h 20. Ce serait une première en France depuis que l’on fait des mesures de températures. Température exceptionnelle? Sans remettre en cause le réchauffement global de la basse troposphère, ni l’augmentation de la fréquence des vagues de chaleur constatée par le GIEC, certaines remarques doivent être faites concernant ce record de température.

Avant de sombrer dans le catastrophisme, il est important de “garder la tête froide” et de considérer les quelques points suivants :

1. Une telle température a peut-être déjà été atteinte dans le passé proche, mais n’a tout simplement pas été mesurée. N’oubliez pas qu’il n’y avait pas autant de thermomètres il y a cent ans. Par exemple, en 1865, il n’y avait en France que deux observatoires astronomiques effectuant des observations météorologiques quotidiennes (voir ici). Aujourd’hui, les stations météorologiques professionnelles du réseau de Météo-France, appelé réseau Radome, ne sont que de 554 pour le France métropolitaine. Il faudrait évidemment plus de stations pour monitorer les 643 801 km² de territoire. Aujourd’hui, cela fait une station pour 1162 km2.

2. Pendant l’été 1930, une vague de chaleur a traversé la France, comme l’atteste le petit article de journal ci-dessous (Figure 1) retrouvé dans “The Telegraph” (Brisbane). Les températures sont données en Fahrenheit et 122 Fahrenheit correspondent à 50°C. Bien que l’article ne donne pas les détails de la mesure (il faut donc rester prudent) nous voyons que de telles vagues de chaleurs se sont déjà produites dans le passé. Voyez également ce qui s’est passé en 1900, 1911, 1921 et 1934  ici.

Record High Temperatures in France: 3 Facts the Media Don’t Tell You

by Roy Spencer, July 2, 2019 in GlobalWarming


News reporting of the recent heat wave in France and other European countries was accompanied with the usual blame on humans for causing the event. For example, here’s the CBS News headline: Record-breaking heat is scorching France. Experts say climate change is to blame.

While it is possible that the human component of recent warming might have made the heat wave slightly worse, there are three facts the media routinely ignore when reporting on such “record hot” events. If these facts were to be mentioned, few people with the ability to think for themselves would conclude that our greenhouse gas emissions had much of an impact.

1. Record High Temperatures Occur Even Without Global Warming

Predicting heat waves? Look half a world away

University of California – Davis, April 12, 2019 in ScienceDaily


When heavy rain falls over the Indian Ocean and Southeast Asia and the eastern Pacific Ocean, it is a good indicator that temperatures in central California will reach 100°F in four to 16 days, according to a collaborative research team from the University of California, Davis, and the Asia-Pacific Economic Cooperation (APEC) Climate Center in Busan, South Korea.

The results were published in Advances in Atmospheric Scienceson April 12.

FROM PREDICTION TO PROTECTION

Heat waves are common in the Central California Valley, a 50-mile-wide oval of land that runs 450 miles from just north of Los Angeles up to Redding. The valley is home to half of the nation’s tree fruit and nut crops, as well as extensive dairy production, and heat waves can wreak havoc on agricultural production. The dairy industry had a heat wave-induced economic loss of about $1 billion in 2006, for instance. The ability to predict heat waves and understand what causes them could inform protective measures against damage.


Media Extrapolating A Trend From A Single Data Point: 2018 Heatwave Edition

by P. Homewood, September 5, 2018 in NotaLotofPeopleKnowThat


This article in something called Inside Climate News seems to be typical of many I have seen this year:  Because we have had much attention in the media on heat waves this year, there must be an upward trend in heat waves and that is a warning signal that man-made global warming is destroying the planet.  Typical of these articles are a couple of features

  1. Declaration of a trend without any actual trend data, but just a single data point of events this year

  2. Unstated implication that there must be a trend because the author can’t remember another year when heat wave stories were so prevalent in the media

  3. Unproven link to man-made global warming, because I guess both involve warmth.

Media Claims Of More Heat Waves Refuted By Multiple Recent Studies, Longterm Data

by Dr. S. Lüning and Prof. F. Vahrenholt, August 31, 2018 in NoTricksZone


The playbook is well-known: After a drought, heat wave or flood occurs, journalists and climate alarmists fall all over themselves in the race to issue shrill warnings that this is only the beginning and that it is known that evil climate change is behind it.

This summer of 2018 we experienced again a Central European heat wave. However the usual alarmists failed again to provide any solid statistics on the frequency of heat waves during the last 100 and 1000 years.

Here we are glad to help out by presenting the latest results on heat wave trend in North America. Let’s begin with a spring heat wave in the USA in 2012 which was examined by Dole & Hoerling (2014) within a long-term context. The authors see a purely natural cause behind the unusual heat:

Sécheresses (Grandes), étés caniculaires à travers les siècles

by La France Pittoresque, 1 août 2013


Quel est le degré de température de nos grands étés ? Ici revient l’insurmontable difficulté de fixer au juste, avant l’usage du thermomètre, l’intensité du froid ou de la chaleur. Un artifice fondé sur les rapports reconnus entre certains phénomènes naturels et les mouvements du thermomètre, fournit les mesures approximatives de nos grandes chaleurs et sécheresses.

De Humboldt a posé en principe que la végétation des arbres exige au moins une température moyenne égale à 11°. Le chiffre de cette température répond encore au point où la chaleur de l’air commence à devenir sensible. Ce degré assez fixe peut être pris pour le premier terme d’une échelle de nos grandes chaleurs. Messier a quant à lui constaté que le maximum de la chaleur à Paris, le 8 juillet 1793, a marqué 40°. C’est à peu près la plus haute température, excepté celle de l’été 1705 à Montpellier, observée en France, le thermomètre au nord, isolé, à l’ombre, à l’abri des réverbérations et à l’air libre.

DATES DE NOS GRANDS ÉTÉS ET GRANDES SÉCHERESSES :

* VIe siècle : 580, 582, 584, 585, 586, 587, 589, 591
* VIIe siècle : 675, 700
* VIIIe siècle : 783
* IXe siècle : 874, 892
* Xe siècle : 921, 987, 994
* XIe siècle : 1078, 1094
* XIIe siècle : 1137, 1183, 1188
* XIIIe siècle : 1204, 1212, 1226, 1287
* XIVe siècle : 1305, 1306, 1325, 1331, 1334, 1361, 1384, 1392
* XVe siècle : 1473
* XVIe siècle : 1540, 1553
* XVIIe siècle : 1632, 1674, 1684, 1694
* XVIIIe siècle : 1701, 1712, 1718, 1719, 1726, 1727, 1767, 1778, 1793
* XIXe siècle : 1803, 1811, 1817, 1825, 1842, 1858, 1875, 1893

US Instrumental Records Indicate More Heat Waves Occurred In the 1930s Than Today

by K. Richard, August 6, 2018 in NoTricksZone


During the 1930s, when the atmospheric CO2 concentration was about 100 ppm lower than today (310 ppm vs. 410 ppm), United States heat waves were just as if not more common than recent decades.

Recently there has been much ado about heat waves and the hottest-ever-recorded-temperatures making their rounds in Northern Hemisphere summer.

Yet scientists have determined that heat waves are largely driven by natural variability, not anthropogenic CO2 emissions.

..

Science studies say heatwaves were more common in USA during the 1930’s

by Anthony Watts, August 6, 2018 in WUWT


During the 1930s, when the atmospheric CO2 concentration was about 100 ppm lower than today (310 ppm vs. 410 ppm), United States heat waves were just as if not more common than recent decades.

Recently there has been much ado about heat waves and the hottest-ever-recorded-temperatures making their rounds in Northern Hemisphere summer.

Yet scientists have determined that heat waves are largely driven by natural variability, not anthropogenic CO2 emissions.

Arctic Sea Ice Volume Skyrockets…Atlantic Surface Cold Surprises Experts

by P. Gosselin, August 3, 2018 in NoTricksZone


Despite all the hysterical “heat wave” and drought reports being put out to the public by the media, the Northern Hemisphere as a whole is in fact not at all that much warmer than the mean since 2000.

According to Dr. Ryan Maue, northern hemisphere temperature anomaly was zero on July 30 and the northern hemisphere land surface anomaly was actually -0.20°C.