by G. Dickie, Mar 16, 2023 in ClimateChangDispatch
Heatwaves unfolding on the bottom of the ocean can be more intense and last longer than those on the sea surface, new research suggests, but such extremes in the deep ocean are often overlooked.
A team of scientists with the U.S. National Oceanic and Atmospheric Administration has conducted the first assessment of marine heatwaves along North America’s continental shelves.
They found that these bottom heatwaves ranged from 0.5 degrees Celsius to 3C warmer than normal temperatures and could last more than six months — much longer than heatwaves at the surface.
“We simply don’t have a ton of instruments on the ocean bottom along continental shelves,” said study co-author Dillon Amaya, an NOAA climate scientist. “The ocean is a powerful thing. It destroys instruments that we have in the water for too long.”
Surface heatwaves can be picked up by satellites and can result in huge algal blooms.
by P. Homewood, July 30, 2022 in NotaLotofPeopleKnowThat
So far July 2022 has been the driest July in England since 1911. Up to 26 July there has been only 15.8mm of rain averaged across England; this is only 24% of the amount we would expect in an average July.
At this stage in the month we would expect to have seen well over three-quarters of the month’s rain to have already fallen in an average July.
The situation for the UK is a little better. As it stands, July 2022 is still the eighth driest July since 1836. With only 37.7mm of rain having fallen so far it is the driest July since 1984. Scotland has been closer to average in the north and west, but drier conditions have prevailed for south and east Scotland. Overall Scotland (71%), Wales (39%) and Northern Ireland (43%) have been dry, but the most extreme conditions are in East Anglia and southeast England.
Mark McCarthy, Head of the Met Office National Climate Information Centre, said: “It is not just July that has been dry. Since the start of the year, all months apart from February have been drier than average in the UK too. The result of this is that the winter, spring and summer of 2022 have all seen less than the UK average seasonal rainfall.
“England has seen the lowest levels during these periods and, rainfall totals for the first six months of the year are around 25% below their long-term average, with the driest regions in the east and southeast.
by P. Homewood, July 24, 2022 in NotaLotofPeopleKnowThat
People on social media have been comparing the high temperatures in much of the UK with the heatwave of 1976, suggesting that the severity of the current hot weather is being exaggerated.
So, what does the evidence show?
How hot was the summer of 1976?
The peak that year was 35.9C. That has been beaten by the current temperatures, with 40.3C recorded so far.
The heatwave of 1976 started in June and lasted for two months. There was a lack of rainfall and a significant drought, with the government enforcing water rationing.
The heatwave was rare for that decade. The average maximum temperature in July in the 1970s was 18.7C. In the 2010s, it was more than 20C.
by Guest Blogger, July 21, 2022 in WUWT
From the Cliff Mass Weather Blog
There is a lot of talk about the short-term European heatwave with some suggesting that the record-breaking warmth is the result of climate change/global warming.
Some of the media and climate advocates have been over the top in their claims (see below), stating that this event was the result of human-caused global warming.
by P. Homewood, July 23, 2022 in NotaLotofPeopleKnowThat
There has inevitably been a lot of apoplectic reporting about this week’s heatwave in Britain. Everybody from the BBC to the Met Office have been blaming it on climate change, with suitably scary colours to ram the message home:
Comparison of TV weather Maps from the BBC in summer 2012, left, and summer 2022 right. Source: BBC
Courtesy of Climate Realism
But so far I have not seen an objective analysis.
So let’s start with a few simple facts:
1) It was extremely hot for a couple of days this week.
2) The heat was the result of an extremely unlikely set of meteorological conditions – a perfect storm, if you like.
We know this because the Met Office told us so. On July 8th, they announced the possibility of a heatwave a week later. The weather model runs produced a wide band of possibilities, with most predicting similar temperatures to the weekend before, and some even forecasting no heatwave at all. At that stage on a couple of models out of the hundreds run predicted 40C temperatures, which were described by the BBC as “a very tiny possibility”.
by P. Homewood, July 18, 2022 in NotaLotofPdeopleKnowThat
If you find yourself wondering over the next few days why it is so swelteringly hot, I have an answer for you. It’s because of rich people. It’s because of those wealthy elites with all their gas-guzzling vehicles and reckless holidaymaking. It’s their fault you’re sweating on the Tube.
This infantile claim really is being made, and by supposedly serious politicians. Labour’s Richard Burgon, over on his Instagram account, is wringing his no doubt sweaty hands over the filthy rich folk who apparently landed us in this weather apocalypse.
‘As we face 40C temperatures and the first ever Red Extreme Heat Warning, remember this climate crisis is driven by the wealthy’, he cries. His stern words are accompanied, naturally, by that Met Office map showing half of Britain coloured dark red – the hellish hue that has been chosen to illustrate how dire our predicament has allegedly become.
Is anyone else tiring of all this green hysteria over the heatwave? There is something medieval about it. There is something creepily pre-modern in the idea that sinful mankind has brought heat and fire and floods upon himself with his wicked, hubristic behaviour. What next – plagues of locusts as a punishment for our failure to recycle?
by P. Homewood, Jul 15, 2022 in NotaLotofPeopleKnowThat
Wildfires have raged, speed restrictions have been imposed on some railway lines and hospitals have already declared ‘critical incidents’.
The hot weather in Britain this summer is set to peak next week, when the mercury could top 39C (102F) in London.
The current non-stop sunshine has evoked memories of the summer of 1976, when there were 15 consecutive days that saw temperatures of 89.6F (32C) somewhere in the UK.
Overall, there were ten weeks of blazing heat that saw widespread drought, mass standpipe use, and even the pausing of the murder trial of the notorious ‘Black Panther’, after a woman suffering from ‘heat exhaustion’ collapsed.
During a First Division football match between Manchester City and Aston Villa, City player collectively lost four stone in weight, prompting the team’s captain to call for an end to ‘summer soccer’.
At that year’s Wimbledon tennis championships, umpires were allowed to remove their jackets for the first time in living memory, whilst major roads were littered with broken-down cars that had overheated.
The extreme weather also caused an increase in the number of 999 callouts to domestic disturbances, as tempers buckled due to the heat.
The summer of 1976 was caused in part by very hot air that had originated in the Mediterranean. The warm weather and lack of rain began on June 23 and did not abate for more than a month.
The highest temperature recorded in the summer was on July 3, when the mercury hit 96.6F (35.9C) in Cheltenham. The average maximum daily temperature was 67.8F (19.9C).
by R. Pielke Jr, June 16, 2022 in TheHonestBroker
It’s hot. Real hot. Heat waves in the United States surely must be the most visible and impactful sign of human caused climate change, right? Well, actually no. Let’s take a look at what the U.S. National Climate Assessment and the Intergovernmental Panel on Climate Change say about heat waves in the United States. What they say may surprise you.
Before proceeding, let me emphasize that human-caused climate change is real and significant. Aggressive policies focused on both adaptation and mitigation make very good sense. So too does being accurate about current scientific understandings. The importance of climate change does not mean that we can ignore scientific integrity — actually the opposite, it makes it all the more important. So let’s take a close look at recent assessment reports and what they say about U.S. heat waves.
The figure below comes out of the most recent U.S. National Climate Assessment(NCA). It shows the frequency (top) and intensity (bottom) of heat waves in the U.S. since 1900. The bottom figure is actually based on a paper that I co-authored in 1999, which serves as the basis for an official indicator of climate change used by the Environmental Protection Agency.
by Jime Steele, July 12, 2021 in WUWT
For those who truly want to be guided by science, put aside the climate crisis hysteria. We can explain the natural dynamics of all heat waves by simply knowing 1) how heat is transported along the earth’s surface; 2) how heat is transported vertically; 3) how solar heating changes; and 4) how the greenhouse effect varies.
Below is a map of global temperature anomalies for the year 2014 that illustrates natural climate dynamics. There is no uniform warming that might be expected from a global blanket of greenhouse gases. Across the globe, surface temperatures alternate between regions of above average warmth (red) with regions of below average (blue). (Gray regions lack sufficient data). Indeed, the observed cooler eastern USA is dubbed a “warming hole” by climate scientists because its cooling trend contradicts global warming theory. It requires a natural climate dynamic explanation.
The temperature pattern is associated with regions where warmer air from the south more frequently intruded northward, while simultaneously, cold air from the north intruded southward. This pattern is due to a naturally wavy jet stream and associated pressure systems. The warm red regions indicate regions where high‑pressure systems dominate. In the northern hemisphere, high pressure systems cause clockwise atmospheric circulation that pulls warm air northward on its western side, and cold air southward on its eastern side. Low pressure systems circulate counter-clockwise, conversely pulling cold air southward on its western side. These combined circulation patterns partly explain both the extreme cold that dropped Texas temperatures as much as 50° F below average in February 2021, as well as extreme heating that raised USA’s northwest temperatures 30°- 40° F above normal the following June. Similarly in 2019, northward transport of heated air from the Sahara desert caused heat waves over Europe and Greenland. Such natural heat transport can also cause coastal Alaska to be warmer than Florida.
by M. Morano, July 8, 2021 in CO2Coalition
Here we go again! Climate change: US-Canada heatwave ‘virtually impossible’ without warming according to climate model simulations
Model Based Study: Northwest heat wave impossible without climate change: “They logged observations of what happened and fed them into 21 computer models and ran numerous simulations. They then simulated a world without greenhouse gases from the burning of coal, oil and natural gas. The difference between the two scenarios is the climate change portion.”
Climate Depot’s Marc Morano & author of Green Fraud:
“Here we go again. Any heatwave, hurricane, tornado outbreak, etc. are always used by the media and other climate activists as some kind of ‘proof” of a climate emergency. At least these claims are more plausible than claims that building collapses or illegal immigration are caused by “climate change.”
But currently, the global satellite temperature for June 2021 is below the 30-year average. And despite the U.S. heatwave, there are plenty of record cold outbreaks happening around the globe, (See: Unusually strong cold weather outbreak spreads from Antarctica into central South America, bringing early winter temperature records and first snowfall after decades)
The media gaslights anyone who mocks ‘global warming’ on a record cold or snowy day but has no problem doing the exact same thing whenever it’s hot. As University of Alabama climate scientist John Christy’s research has found: “About 75% of the states recorded their hottest temperature prior to 1955, and over 50 percent of the states experienced their record cold temperatures after 1940.”
In addition, the EPA’s own data has shown that the 1930s U.S. heatwaves were far more severe than current temperatures. (2021 Update: EPA puts inconvenient data on 1930s drought and heat wave down the memory hole)
In short, it is unscientific and nothing short of political lobbying to jump on a heatwave to claim ‘proof’ of man-made global warming. Climate activists’ new motto should be: Never let an opportunity go to waste to blame a heatwave or a flood or hurricane or building collapse or immigration — on ‘climate change.’
by C. Rotter, July 6, 2021 in WUWT
Reposted from The Cliff Mass Weather Blog
During the past week, the Pacific Northwest experienced the most severe heat event of the past century.
All-time high-temperature records were broken throughout the region, often by large margins. Many in the media, several local and national politicians, and some activist environmental scientists have claimed that this event was “driven by” or predominantly forced by human-inspired global warming (usually referred to as “climate change”).But such global warming claims are not supported by the facts and our best scientific understanding.
Truth and Rigorous Science About Climate Change is Necessary for Wise Decisions
In this blog, I will use observations, modeling, climatological data, and the peer-reviewed scientific literature to demonstrate that human-caused global warming played a very small role in the extreme heat event that we just experienced here in the Pacific Northwest.I will describe the origins of a meteorological black swan eventand how the atmosphere is capable of attaining extreme, unusual conditions without any aid from our species.As you read this, consider that I have actively pursued research on Northwest heatwaves, published several papers in the peer-reviewed literature on this specific topic, and have run both weather prediction and climate models that simulate such events. This subject is in my wheelhouse.
I also discuss the seriousness of misinformation. You and others can not make wise decisions when the information provided to you is not based on truth and science.
by A. Watts, July 1, 2021 in ClimateChangeDispatch
The headline in E&E News, WOWT-TV, Scientific American, WorldNewsNetwork, and other media outlets this week, “Unprecedented Heat Wave in Pacific Northwest Driven by Climate Change” couldn’t possibly be more unscientific.
With absolutely no analysis, no historical context, and nothing but conjecture, author Anne. C. Mulkern eschewed science for advocacy in her reporting of the brief Pacific Northwest (PNW) heatwave this week.
Yes, the heatwave set all-time high-temperature records in Washington, Oregon, and Canada. But consider this: At best, we have about 150 years of reliable weather records for the PNW, so a “black swan” outlier eventlike this isn’t surprising.
It’s happened before, most certainly. We just weren’t around to observe it. After all, Native Americans did not keep written weather records.
High- (and low-) temperature records are nothing new. But it is important to look at the past because data shows us that more high-temperature records were set during the first half of the twentieth century than during the past 50 years.
Even the Environmental Protection Agency (EPA) confirms this.
by C. Rotter, Oct 9, 2020 in WUWT
Reposted from NOT A LOT OF PEOPLE KNOW THAT
OCTOBER 8, 2020tags: california
By Paul Homewood
by P. Homewood, January 7, 2020 in ClimateChangeDispatch
The Lancet has published its latest annual report on health and climate change, which inevitably orders us to stop using fossil fuels or the kids will get it!
It is the usual load of overhyped rubbish of the sort we have seen in previous years.
The executive summary contains a number of questionable claims and statements which seriously undermine the report’s integrity and reliability.
For a start, it claims that ‘a child born today will experience a world that is more than four degrees warmer than the pre-industrial average.’
Really? A temperature rise of three degrees in 50 years or so? Even the highly discredited climate models don’t regard this as realistic. For the Lancet to state this as a bald-faced fact calls into question the objectivity of its contents.
It then proceeds to list all sorts of ways in which health is already being impacted by climate change, including disease transmission, air pollution, extreme weather (which apparently will affect women more – yes, that’s got me and all!), wildfires, heatwaves and goodness knows what else.
Yet, tucked away in Figure 5 is the dirty little secret that mortality rates from climate-related causes have been plummeting since 1990.
by Clyde Spencer, Sep. 6, 2019 in WUWT
Tmax and Tmin time-series are examined to look for historical, empirical evidence to support the claim that heat waves will become more frequent, of longer duration, and with higher temperatures than in the past. The two primary parameters examined are the coefficient of variation and the difference between Tmax and Tmin. There have been periods in the past when heat waves were more common. However, for nearly the last 30 years, there has been a reversal of the correlation of increasing CO2 concentration with the Tmax coefficient of variation. The reversal in differences in Tmax and Tmin indicate something notable happened around 1990.
There was much in the press this Summer about the ‘global’ heat waves, particularly in France and Greenland. For an example of some of the pronouncements, see here. The predictions are that we should expect to see heat waves that are more frequent and more severe because of Anthropogenic Global Warming, now more commonly called “Climate Change.” The basis for the claim is unvalidated Global Climate Models, which are generally accepted to be running to warm. The simplistic rationale is that as the nights cool less, it takes less heating the next day to reach unusually high temperatures. Unfortunately, were that true, that would lead one to conclude that heat waves should never stop.
Fig. 1. U.S. Annual Heat Wave Index, 1895-2015
If the predictions of worse future heat waves were valid, one might expect to be able to discern a change occurring already, inasmuch as it is commonly accepted that Earth has been warming at least since the beginning of the Industrial Revolution
by J. Van Vliet, Sep. 5, 2019 in ScienceClimatEnergie
Belgium and France were recently affected by an extreme heat wave that took place between 24 and 27 July 2019. This heat wave was in many aspects presented as unprecedented and it has therefore unlocked a large scale reaction by many media. After a few days to cool down, the time has come to express a non-emotional and non-political opinion about such a strong heat wave.
Emotional reactions were normal in such circumstances: the temperatures were extreme and even if France and Belgium were much better prepared that for the 2003 heat wave, the present heat wave has led to important suffering for many poor people or people in bad health and without access to air conditioning.
The heat wave unlocked also many political reactions: it was an opportunity to press once more the threatening mantra of United Nations and IPCC that mankind is responsible for this catastrophic warming and is destroying its own and only planet. A whole caste of politicians, countless academics and so-called “experts”, lobbyists, bureaucrats and NGOs claim that it is urgent to take “strong” measures going up to the replacement of democracy by climatist despotism: even children are enlisted in the political arena. These people number in hundreds of thousands and probably more and they communicate loudly and repeatedly at the UN, through IPCC reports and COP events, in the media and in the streets. Does this imply they are right ? Has mankind something to do with these high temperatures ?
by P. Homewood, Sept.2, 2019 in NotaLotofPeopleKnowThat
To read the headlines in the last month or two, you would think we had been having a Mediterranean summer.
The truth is much more mundane however.
The numbers for last month’s CET are now out. August ended up at 17.1C, meaning that there have been 32 Augusts as warm or warmer. Last month was no warmer than 1801, 1842 and 1932.
Summer as a whole ranked 48th hottest, tied with 1935.
The summer of 1976 still remains top of the list, but second hottest was way back in 1826.
Indeed there have been warmer summers on 28 occasions prior to 1900. Notably, one such summer was 1666, the 18th warmest. That was, of course, the year of the Great Fire of London, which swept through London between the 2nd and 6th of September.
by P. Homewood, September 1, 2019 in NotaLotofPeopleKnowThat
Let’s start with Qaanaaq (Thule), which the Mirror reporter visited during w/e 25th August. She wrote:
A heatwave is gripping The Arctic, melting away Greenland’s ice sheet on an unprecedented scale and threatening a global rise in sea levels – an urgent reminder of the climate crisis we are now all facing.
Kids splashing each other in the sea and locals wearing t-shirts were unheard of here in August 10 years ago.
But now, alongside teenage girls wearing skirts to school and increasing mosquitoes, it is a common occurrence for the residents of Qaanaaq, in north-west Greenland, one of the world’s most northerly cities situated 700 miles north of the Arctic Circle.
This is the frontline of climate change…..
The country is also experiencing record-breaking temperatures. In mid-June, along the eastern coast it was 9C warmer than the 1981-2010 average.
Just as western Europe has baked in a heatwave with record temperatures at the end of July, the hot air moved as far north as Greenland with the gauge hitting 22C on August 1. The average high is around 7C….
According to Weather Underground, however, daily maximum temperatures at Qaanaaq never got above 47F that week. The highest temperature of the month was 63F on the 1st.
KNMI confirm that the record temperature at Qaanaaq is 67F, and that a temperature of 63F was also recorded way back in 1959.
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.
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.
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.
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.
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.
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.
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.
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.
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