Tag Archives: ocean warming

How Much Ocean Heating is Due To Deep-Sea Hydrothermal Vents?

From Roy Spencer, PhD.

January 29th, 2024 by Roy W. Spencer, Ph. D.

I sometimes see comments to the effect that recent ocean warming could be due to deep-sea hydrothermal vents. Of course, what they mean is an INCREASE in hydrothermal vent activity since these sources of heat are presumably operating continuously and are part of the average energy budget of the ocean, even without any long-term warming.

Fortunately, there are measurements of the heat output from these vents, and there are rough estimates of how many vents there are. Importantly, the vents (sometimes called “smokers”) are almost exclusively found along the mid-oceanic ridges, and those ridges have an estimated total length of 75,000 km (ref).

So, if we had (rough) estimates of the average heat output of a vent, and (roughly) know how many vents are scattered along the ridges, we can (roughly) estimate to total heat flux into the ocean per sq. meter of ocean surface.

Direct Temperature Measurements Near the Vents Offer a Clue

A more useful observation comes from deep-sea surveys using a towed sensor package which measures trace minerals produced by the vents, as well as temperature. A study published in 2016 described a total towed sensor distance of ~1,500 km just above where these smokers have been located. The purpose was to find out just how many sites there are scattered along the ridges.

Importantly, the study notes, “temperature anomalies from such sites are commonly too weak to be reliably detected during a tow“.

Let’s think about that: even when the sensor package is towed through water in which the mineral tracers from smokers exist, the temperature anomaly is “too weak to be reliably detected”.

Now think about that (already) extremely weak warmth being mixed laterally away from the (relatively isolated) ocean ridges, and vertically through 1,000s of meters of ocean depth.

Also, recall the deep ocean is, everywhere, exceedingly cold. It has been calculated that the global-average ocean temperature below 200m depth is 4 deg. C (39 deg. F). The cold water originates at the surface at high latitudes where it becomes extra-salty (and thus dense) and it slowly sinks, filling the global deep oceans over thousands of years with chilled water.

The fact that deep-sea towed probes over hydrothermal vent sites can’t even measure a temperature increase in the mineral-enriched water means there is no way for buoyant water parcels to reach up several kilometers to reach the thermocline.

Estimating The Heat Flux Into the Ocean from Hydrothermal Vents

We can get some idea of just how small the heat input is based upon various current estimates of a few parameters. The previously mentioned study comes up with a possible spacing of hydrothermal sites every ~10 km. So, that’s 7,500 sites around the world along the mid-oceanic ridges. From deep-sea probes carrying specialized sampling equipment, the average energy output looks to be about 1 MW per vent (see Table 1, here). But how many vents are there per site? I could not find a number. They sampled several vents at several sites. Let’s assume 100, and see where the numbers lead. The total heat flux into the ocean from hydrothermal vents in Watts per sq. meter (W m-2) would then be:

Heat Flux = (7,500 sites)x(100 vents per site)x(1 MW per vent)/(360,000,000,000,000 sq. m ocean sfc).

This comes out to 0.00029 W m-2.

That is an exceedingly small number, about 1/4,000th of the 1 W m-2 estimated energy imbalance from Argo float measurements of (very weak) ocean warming over the last 20 years or so. Even if the estimate is off by a factor of 100, the resulting heat flux is still 1/40th of global ocean heating rate. I assume that oceanographers have published some similar estimates, but I could not find them.

Now, what *is* somewhat larger is the average geothermal heat flux from the deep, hot Earth, which occurs everywhere. That has a global average value of 0.087 W m-2. This is approximately 1/10 of the estimate current ocean heating rate. But remember, it’s not the average geothermal heat flux that is of interest because that is always going on. Instead, that heat flux would have to increase by a factor of ten for decades to cause the observed heating rate of the global deep oceans.

Evidence Ocean Warming Has Been Top-Down, Not Bottom-Up

Finally, we can look at the Argo-estimate vertical profile of warming trends in the ocean. Even though the probes only reach a little more than half-way to the (average) ocean bottom, the warming profile supports heating from above, not from below (see panel B, right). Given these various pieces of evidence, it would difficult to believe that deep-sea hydrothermal vents — actually, an increase in their heat output — can be the reason for recent ocean warming.

Ocean Warming Crest August 2023, Solar Coincidence?

From Science Matters

By Ron Clutz

The best context for understanding decadal temperature changes comes from the world’s sea surface temperatures (SST), for several reasons:

  • The ocean covers 71% of the globe and drives average temperatures;
  • SSTs have a constant water content, (unlike air temperatures), so give a better reading of heat content variations;
  • Major El Ninos have been the dominant climate feature in recent years.

HadSST is generally regarded as the best of the global SST data sets, and so the temperature story here comes from that source. Previously I used HadSST3 for these reports, but Hadley Centre has made HadSST4 the priority, and v.3 will no longer be updated.  HadSST4 is the same as v.3, except that the older data from ship water intake was re-estimated to be generally lower temperatures than shown in v.3.  The effect is that v.4 has lower average anomalies for the baseline period 1961-1990, thereby showing higher current anomalies than v.3. This analysis concerns more recent time periods and depends on very similar differentials as those from v.3 despite higher absolute anomaly values in v.4.  More on what distinguishes HadSST3 and 4 from other SST products at the end. The user guide for HadSST4 is here.

The Current Context

The chart below shows SST monthly anomalies as reported in HadSST4 starting in 2015 through August 2023.  A global cooling pattern is seen clearly in the Tropics since its peak in 2016, joined by NH and SH cycling downward since 2016. 

Note that in 2015-2016 the Tropics and SH peaked in between two summer NH spikes.  That pattern repeated in 2019-2020 with a lesser Tropics peak and SH bump, but with higher NH spikes. By end of 2020, cooler SSTs in all regions took the Global anomaly well below the mean for this period.  In 2021 the summer NH summer spike was joined by warming in the Tropics but offset by a drop in SH SSTs, which raised the Global anomaly slightly over the mean.

Then in 2022, another strong NH summer spike peaked in August, but this time both the Tropic and SH were countervailing, resulting in only slight Global warming, later receding to the mean.   Oct./Nov. temps dropped  in NH and the Tropics took the Global anomaly below the average for this period. After an uptick in December, temps in January 2023 dropped everywhere, strongest in NH, with the Global anomaly further below the mean since 2015.

Now comes El Nino as shown by the upward spike in the Tropics since January, the anomaly nearly tripling from 0.38C to 1.06C.  Now in August 2023, all regions rose, especially NH up from 0.70C to now 1.37C, pulling up the global anomaly to a new high for this period. 

Comment:

The climatists have seized on this unusual warming as proof of their Zero Carbon agenda, without addressing how impossible it would be for CO2 warming the air to raise ocean temperatures.  It is the ocean that warms the air, not the other way around.  Recently Steven Koonin had this to say about the phonomenon confirmed in the graph above:

El Nino is a phenomenon in the climate system that happens once every four or five years.  Heat builds up in the equatorial Pacific to the west of Indonesia and so on.  Then when enough of it builds up it surges across the Pacific and changes the currents and the winds.  As it surges toward South America it was discovered and named in the 19th century  It is well understood at this point that the phenomenon has nothing to do with CO2.

Now people talk about changes in that phenomena as a result of CO2 but it’s there in the climate system already and when it happens it influences weather all over the world.   We feel it when it gets rainier in Southern California for example.  So for the last 3 years we have been in the opposite of an El Nino, a La Nina, part of the reason people think the West Coast has been in drought.

It has now shifted in the last months to an El Nino condition that warms the globe and is thought to contribute to this Spike we have seen. But there are other contributions as well.  One of the most surprising ones is that back in January of 2022 an enormous underwater volcano went off in Tonga and it put up a lot of water vapor into the upper atmosphere. It increased the upper atmosphere of water vapor by about 10 percent, and that’s a warming effect, and it may be that is contributing to why the spike is so high.

A longer view of SSTs

The graph above is noisy, but the density is needed to see the seasonal patterns in the oceanic fluctuations.  Previous posts focused on the rise and fall of the last El Nino starting in 2015.  This post adds a longer view, encompassing the significant 1998 El Nino and since.  The color schemes are retained for Global, Tropics, NH and SH anomalies.  Despite the longer time frame, I have kept the monthly data (rather than yearly averages) because of interesting shifts between January and July.1995 is a reasonable (ENSO neutral) starting point prior to the first El Nino. 

The sharp Tropical rise peaking in 1998 is dominant in the record, starting Jan. ’97 to pull up SSTs uniformly before returning to the same level Jan. ’99. There were strong cool periods before and after the 1998 El Nino event. Then SSTs in all regions returned to the mean in 2001-2. 

SSTS fluctuate around the mean until 2007, when another, smaller ENSO event occurs. There is cooling 2007-8,  a lower peak warming in 2009-10, following by cooling in 2011-12.  Again SSTs are average 2013-14.

Now a different pattern appears.  The Tropics cooled sharply to Jan 11, then rise steadily for 4 years to Jan 15, at which point the most recent major El Nino takes off.  But this time in contrast to ’97-’99, the Northern Hemisphere produces peaks every summer pulling up the Global average.  In fact, these NH peaks appear every July starting in 2003, growing stronger to produce 3 massive highs in 2014, 15 and 16.  NH July 2017 was only slightly lower, and a fifth NH peak still lower in Sept. 2018.

The highest summer NH peaks came in 2019 and 2020, only this time the Tropics and SH were offsetting rather adding to the warming. (Note: these are high anomalies on top of the highest absolute temps in the NH.)  Since 2014 SH has played a moderating role, offsetting the NH warming pulses. After September 2020 temps dropped off down until February 2021.  In 2021-22 there were again summer NH spikes, but in 2022 moderated first by cooling Tropics and SH SSTs, then in October to January 2023 by deeper cooling in NH and Tropics.  

Now in 2023 the Tropics flipped from below to well above average, while NH has produced a summer peak with August higher than any previous year. In fact, the summer warming peaks in NH have occurred in August or September, so this number is likely the crest.

What to make of all this? The patterns suggest that in addition to El Ninos in the Pacific driving the Tropic SSTs, something else is going on in the NH.  The obvious culprit is the North Atlantic, since I have seen this sort of pulsing before.  After reading some papers by David Dilley, I confirmed his observation of Atlantic pulses into the Arctic every 8 to 10 years.

Contemporary AMO Observations

Through January 2023 I depended on the Kaplan AMO Index (not smoothed, not detrended) for N. Atlantic observations. But it is no longer being updated, and NOAA says they don’t know its future.  So I find that ERSSTv5 AMO dataset has data through August.  It differs from Kaplan, which reported average absolute temps measured in N. Atlantic.  “ERSST5 AMO  follows Trenberth and Shea (2006) proposal to use the NA region EQ-60°N, 0°-80°W and subtract the global rise of SST 60°S-60°N to obtain a measure of the internal variability, arguing that the effect of external forcing on the North Atlantic should be similar to the effect on the other oceans.”  So the values represent sst anomaly differences between the N. Atlantic and the Global ocean.

The chart above confirms what Kaplan also showed.  As August is the hottest month for the N. Atlantic, its varibility, high and low, drives the annual results for this basin.  Note also the peaks in 2010, lows after 2014, and a rise in 2021. Now in 2023 the peak is nearly 1.4C.  An annual chart below is informative:

Note the difference between blue/green years, beige/brown, and purple/red years.  2010, 2021, 2022 all peaked strongly in August or September.  1998 and 2007 were mildly warm.  2016 and 2018 were matching or cooler than the global average.  2023 started out slightly warm, then in May and June spiked to match 2010. Now there are highs in August and the peak in July.

The pattern suggests the ocean may be demonstrating a stairstep pattern like that we have also seen in HadCRUT4. 

The purple line is the average anomaly 1980-1996 inclusive, value 0.18.  The orange line the average 1980-202306, value 0.38, also for the period 1997-2012. The red line is 2013-202306, value 0.64. As noted above, these rising stages are driven by the combined warming in the Tropics and NH, including both Pacific and Atlantic basins.

Curiosity:  Solar Coincidence?

The news about our current solar cycle 25 is that the solar activity is hitting peak numbers now and higher  than expected 1-2 years in the future.  As livescience put it:  Solar maximum could hit us harder and sooner than we thought. How dangerous will the sun’s chaotic peak be?  Some charts from spaceweatherlive look familar to these sea surface temperature charts.

Summary

The oceans are driving the warming this century.  SSTs took a step up with the 1998 El Nino and have stayed there with help from the North Atlantic, and more recently the Pacific northern “Blob.”  The ocean surfaces are releasing a lot of energy, warming the air, but eventually will have a cooling effect.  The decline after 1937 was rapid by comparison, so one wonders: How long can the oceans keep this up? And is the sun adding forcing to this process?

Footnote: Why Rely on HadSST4

HadSST is distinguished from other SST products because HadCRU (Hadley Climatic Research Unit) does not engage in SST interpolation, i.e. infilling estimated anomalies into grid cells lacking sufficient sampling in a given month. From reading the documentation and from queries to Met Office, this is their procedure.

HadSST4 imports data from gridcells containing ocean, excluding land cells. From past records, they have calculated daily and monthly average readings for each grid cell for the period 1961 to 1990. Those temperatures form the baseline from which anomalies are calculated.

In a given month, each gridcell with sufficient sampling is averaged for the month and then the baseline value for that cell and that month is subtracted, resulting in the monthly anomaly for that cell. All cells with monthly anomalies are averaged to produce global, hemispheric and tropical anomalies for the month, based on the cells in those locations. For example, Tropics averages include ocean grid cells lying between latitudes 20N and 20S.

Gridcells lacking sufficient sampling that month are left out of the averaging, and the uncertainty from such missing data is estimated. IMO that is more reasonable than inventing data to infill. And it seems that the Global Drifter Array displayed in the top image is providing more uniform coverage of the oceans than in the past.

USS Pearl Harbor deploys Global Drifter Buoys in Pacific Ocean

New Study: People Distressed, Anxious About Climate Have Less ‘Climate-Specific Knowledge’

From NoTricksZone

By Kenneth Richard on 17. August 2023

“The degree of one’s emotions varies inversely with one’s knowledge of the facts, the less you know the hotter you get.” – Bertrand Russell

Per a new study, people who are less knowledgeable about the climate and environment are more likely to experience climate change anxiety (e.g., “I find myself crying because of climate change”) and distress compared to those more climatically, environmentally knowledgeable.

Conversely, people who are more knowledgeable about the climate and environment experience less anxiety and distress about climate change.

Image Source: Zacher and Rudolph, 2023

For example, when climate-knowledgeable people realize that CO2 can only radiatively affect the top 0.01 mm of the 4,000,000 mm deep ocean by 0.5 W/m² (500 mW/m²) when tripled to 1,071 ppm, they understand that CO2 cannot be a driver – let alone a measurable contributor – to ocean warming.

Image Source: Wong and Minnett, 2018

And since the ocean warming is 93% of what constitutes global “warming of the Earth system,” and global warming has thus only amounted to 0.1°C in the last 50 years, climate-knowledgeable people can be confident that what is occurring today with regard to “global warming” is nothing more or less than unremarkable.

Image Source: Levitus et al., 2012 and ScienceDaily

Especially since the ocean heat content changes since 1750 only bring us 1/3rd of the way back to the global ocean heat levels achieved during the Medieval Warm Period.

Image Source: Gebbie and Huybers, 2019 and Gebbie, 2021

What NASA and Science Admit but the Media are Failing to Report About Our Current Heat Wave

From ClimateRealism

Editor’s note: last week, Climate Realism also covered this event in a guest post from Ryan Maue, Ph.D., who also wrote about the effect of the eruption on Earth’s atmosphere. This essay and the scientific study cited by it, further reinforce the likelihood that this event has contributed to recent, sustained, above average temperatures.


Guest essay by Thomas Lifson  Originally published in American Thinker.

The current heat wave is being relentlessly blamed on increasing levels of carbon dioxide in the atmosphere, but there is a much more plausible explanation, one that is virtually endorsed by two of the world’s leading scientific organizations. It turns out that levels of water vapor in the atmosphere have dramatically increased over the last year-and-a-half, and water vapor is well recognized as a greenhouse gas, whose heightened presence leads to higher temperatures, a mechanism that dwarfs any effect CO2 may have.

So, why has atmospheric water vapor increased so dramatically? Because of a historic, gigantic volcanic eruption last year that I – probably along with you — had never heard of. The mass media ignored it because it took place 490 feet underwater in the South Pacific. Don’t take it from me, take it from NASA (and please do follow the link to see time lapse satellite imagery of the underwater eruption and subsequent plume of gasses and water injected into the atmosphere):

Himawari-8 satellite images of the 15 January 2022 eruption of Hunga Tonga-Hunga Haʻapai.

When the Hunga Tonga-Hunga Ha’apai volcano erupted on Jan. 15, it sent a tsunami racing around the world and set off a sonic boom that circled the globe twice. The underwater eruption in the South Pacific Ocean also blasted an enormous plume of water vapor into Earth’s stratosphere – enough to fill more than 58,000 Olympic-size swimming pools. The sheer amount of water vapor could be enough to temporarily affect Earth’s global average temperature.

“We’ve never seen anything like it,” said Luis Millán, an atmospheric scientist at NASA’s Jet Propulsion Laboratory in Southern California. He led a new study examining the amount of water vapor that the Tonga volcano injected into the stratosphere, the layer of the atmosphere between about 8 and 33 miles (12 and 53 kilometers) above Earth’s surface.

In the study, published in Geophysical Research Letters, Millán and his colleagues estimate that the Tonga eruption sent around 146 teragrams (1 teragram equals a trillion grams) of water vapor into Earth’s stratosphere – equal to 10% of the water already present in that atmospheric layer. That’s nearly four times the amount of water vapor that scientists estimate the 1991 Mount Pinatubo eruption in the Philippines lofted into the stratosphere. [emphases added]

NASA published the above in August 2022. Half a year later, a newer study increased the estimate of the water vapor addition to the atmosphere by 30%. From the European Space Agency:

In a recent paper published in Nature, a team of scientists showed the unprecedented increase in the global stratospheric water mass by 13% (relative to climatological levels) and a five-fold increase of stratospheric aerosol load – the highest in the last three decades.

Using a combination of satellite data, including data from ESA’s Aeolus satellite, and ground-based observations, the team found that due to the extreme altitude, the volcanic plume circumnavigated the Earth in just one week and dispersed nearly pole-to-pole in three months. [emphasis added]

Another scientific paper explains the “net warming of the climate system” on a delayed basis.  NASA’s Jet Propulsion Laboratory further explains:

Volcanic eruptions rarely inject much water into the stratosphere. In the 18 years that NASA has been taking measurements, only two other eruptions – the 2008 Kasatochi event in Alaska and the 2015 Calbuco eruption in Chile – sent appreciable amounts of water vapor to such high altitudes. But those were mere blips compared to the Tonga event, and the water vapor from both previous eruptions dissipated quickly. The excess water vapor injected by the Tonga volcano, on the other hand, could remain in the stratosphere for several years.

This extra water vapor could influence atmospheric chemistry, boosting certain chemical reactions that could temporarily worsen depletion of the ozone layer. It could also influence surface temperatures. Massive volcanic eruptions like Krakatoa and Mount Pinatubo typically cool Earth’s surface by ejecting gases, dust, and ash that reflect sunlight back into space. In contrast, the Tonga volcano didn’t inject large amounts of aerosols into the stratosphere, and the huge amounts of water vapor from the eruption may have a small, temporary warming effect, since water vapor traps heat. The effect would dissipate when the extra water vapor cycles out of the stratosphere [Emphases added]

So there you have it: we are in for extra atmospheric heat “for several years” until the extra water vapor injected by this largest-ever-recorded underwater volcano eruption dissipates.

Jeff Childers, who brought this scientific data to my notice, writes:

Here’s why corporate media is ignoring the most dramatic climate even[t] in modern history: because you can’t legislate underwater volcanoes. You can try, but they won’t listen. So what’s the fun in that? Corporate media only exists to further political ends. Since volcanoes aren’t subject to politics, why bother?

He brings up the work of Ethical Skeptic:

Ethical is suggesting that the water is heating the air — instead of the other way around. And the Earth’s core is heating the water.  It’s a theory that explains everything.

Meanwhile, “science” is baffled. From just a month ago, in mid-June:

See? But though scientists are baffled, corporate media and its repulsive allies are busily blaming ocean warming on carbon dioxide — a ludicrous notion.

I am the first to admit that none of this – not the atmospheric CO2 theory of global warming, nor the effect of the largest ever known undersea volcanic eruption – is scientifically proven. But before we impoverish ourselves trying to reduce CO2 emissions (while watching China dramatically increase them), let’s practice real science and not jump to conclusions based on an imaginary “consensus.”

Top climate scientists rubbish claims July was the hottest month ever – Public being ‘misinformed on a massive scale’

From CLIMATE DEPOT

Via The Australian: Cliff Mass, professor of Atmospheric Sciences at University of Washington, said the public was being “misinformed on a massive scale”: “It‘s terrible. I think it’s a disaster. There’s a stunning amount of exaggeration and hype of extreme weather and heatwaves, and it’s very counter-productive,” he told The Australian in an interview. “I’m not a contrarian. I‘m pretty mainstream in a very large [academic] department, and I think most of these claims are unfounded and problematic”. …

Professor Mass said the climate was “radically warmer” around 1000 years ago during what’s known as the Medieval Warm Period, when agriculture thrived in parts of now ice-covered Greenland. “If you really go back far enough there were swamps near the North Pole, and the other thing to keep in mind is that we‘re coming out of a cold period, a Little Ice Age from roughly 1600 to 1850”.#

John Christy, a professor of Atmospheric Sciences at the University of Alabama at Huntsville, said heatwaves in the first half of the 20th century were at least as intense as those of more recent decades based on consistent, long-term weather stations going back over a century. “I haven‘t seen anything yet this summer that’s an all-time record for these long-term stations, 1936 still holds by far the record for the most number of stations with the hottest-ever temperatures,” he told The Australian, referring to the year of a great heatwave in North America that killed thousands. 

Professor Christy said an explosion of the number of weather stations in the US and around the world had made historical comparisons difficult because some stations only went back a few years; meanwhile, creeping urbanization had subjected existing weather stations to additional heat. “In Houston, for example, in the centre it is now between 6 and 9 degrees Fahrenheit warmer than the surrounding countryside,” he explained in an interview with The Australian.

Professor Christy, conceding a slight warming trend over the last 45 years, said July could be the warmest month on record based on global temperatures measured by satellites – “just edging out 1998” – but such measures only went back to 1979.
By: Admin – Climate Depot

Top climate scientists rubbish claims July was the hottest month ever | The Australian

People try to keep cool at Coney Island during the US heatwave. Picture: Getty Images via AFP.

By ADAM CREIGHTON

WASHINGTON CORRESPONDENT – THE AUSTRALIAN NEWSPAPER

AUGUST 2, 2023

Two of America’s top climate scientists have rubbished claims July was the hottest month on record, deploring a “stunning amount of exaggeration and hype” surrounding the UN Secretary-General’s statement last week that “the era of global boiling [had] arrived.”

Cliff Mass, professor of Atmospheric Sciences at University of Washington, said the public was being “misinformed on a massive scale” following a deluge of news reports that summer heatwaves in the US and Europe had pushed July’s average temperature above 17 degrees, and allegedly to the highest level in 120,000 years. UN

“It‘s terrible. I think it’s a disaster. There’s a stunning amount of exaggeration and hype of extreme weather and heatwaves, and it’s very counter-productive,” he told The Australian in an interview.

“I’m not a contrarian. I‘m pretty mainstream in a very large [academic] department, and I think most of these claims are unfounded and problematic”.

John Christy, a professor of Atmospheric Sciences at the University of Alabama at Huntsville, said heatwaves in the first half of the 20th century were at least as intense as those of more recent decades based on consistent, long-term weather stations going back over a century.

“I haven‘t seen anything yet this summer that’s an all time record for these long term stations, 1936 still holds by far the record for the most number of stations with the hottest ever temperatures,” he told The Australian, referring to the year of a great heatwave in North America that killed thousands. 

Professor Christy said an explosion of the number of weather stations in the US and around the world had made historical comparisons difficult because some stations only went back a few years; meanwhile, creeping urbanisation had subjected existing weather stations to additional heat.

“In Houston, for example, in the centre it is now between 6 and 9 degrees Fahrenheit warmer than the surrounding countryside,” he explained in an interview with The Australian.

Major newspapers from the Washington Post to the London Times have reported July as the hottest month on record after the average global daily temperature last month surpassed 17 C – around 1.5 degrees above pre-industrial levels – based on satellite data compiled by the University of Maine.

“We’re just really starting to see climate change kick in,” Nathan Lenssen, a postdoctoral researcher at the University of Colorado, told the Washington Post last month.

Karsten Haustein, a climate scientist at Leipzig University, told the Times that July was “outrageously warm” and may have been the warmest month since the Eemian interglacial period, about 120,000 years ago.

Visitors cool themselves off at the fountain of the World War II Memorial in Washington. Picture: Getty Images via AFP.

Growing concern about higher temperatures caused by humans has underpinned a global push to slash carbon dioxide emissions by 2050 by phasing out fossil fuels in favour of solar and wind power, fuelling major political and scientific debates.

“Hot enough for you? Thank a MAGA Republican. Or better yet, vote them out of office,” tweeted former Democrat presidential candidate Hillary Clinton last week.

The IMF cancelled a scheduled talk by Nobel prize winner John Clauser last week after he publicly stated: “I can confidently say there is no real climate crisis, and that climate change does not cause extreme weather events.”

Professor Christy, conceding a slight warming trend over the last 45 years, said July could be the warmest month on record based on global temperatures measured by satellites – “just edging out 1998” – but such measures only went back to 1979.

Professor Mass said the climate was “radically warmer” around 1000 years ago during what’s known as the Medieval Warm Period, when agriculture thrived in parts of now ice-covered Greenland.

“If you really go back far enough there were swamps near the North Pole, and the other thing to keep in mind is that we‘re coming out of a cold period, a Little Ice Age from roughly 1600 to 1850”.

“Global warming, it‘s a serious issue, but it’s a slow issue, it’s not an existential threat,” he added, suggesting human activities may have added up to one degree Celsius to average temperatures since the 1980s.

ADAM CREIGHTON

WASHINGTON CORRESPONDENT

Adam Creighton is an award-winning journalist with a special interest in tax and financial policy. He was a Journalist in Residence at the University of Chicago’s Booth School of Business in 2019. He’s written … 

Read more

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No, the Earth Did Not have an ‘Unprecedented and Terrifying … All-Time High Temperature’ on July 4th – Not the hottest in 100,000 years – NOAA & AP back away from claim

– Meteorologist Anthony Watts: On July 3rd and 4th and the following days, multiple mainstream media outlets ran stories claiming that the Earth had experienced an unprecedented hot day(s). This is false. The data they cited was not official data, but from a private website and investigation shows the claim was a gross error.

Forbes: July 4 Was Earth’s Hottest Day In Over 100000 Years

Apparently, all those people missed the fact that they were looking at the output of a climate model, not actually measured temperatures. Only one news outlet, The Associated Press, bothered to print a sensible caveat…The National Oceanic and Atmospheric Administration distanced itself from the designation, compiled by the University of Maine’s Climate Reanalyzer, which uses satellite data and computer simulations to measure the world’s condition….

The AP updated its story on July 7th to include this single yet very important paragraph: “NOAA, whose figures are considered the gold standard in climate data, said in a statement Thursday that it cannot validate the unofficial numbers. It noted that the reanalyzer uses model output data, which it called ‘not suitable’ as substitutes for actual temperatures and climate records. The agency monitors global temperatures and records on a monthly and an annual basis, not daily.”

So, in the space of two days, we went from temperature data that was “[t]otally unprecedented and terrifying,” to temperature data that was not suitable for purpose.

‘Supposed’ Record Temperature In China Not All It Seems

– Paul Homewood: “There is a highly coordinated effort taking place to persuade the public that the world’s climate is somehow out of control, with extreme weather everywhere and heatwaves on every continent.” … “Quite clearly, any record temperature set in the Turpan is meaningless and cannot be compared to other locations in China. It is merely the product of a micro climate. There is also a second issue here. Sanbao has no official listing or any historical data…In short we have no way of knowing whether it has been hotter in Saobao in the past, or whether the thermometer there is even properly sited and maintained.”

Dr. Roger Pielke: ‘Neither the UN IPCC nor the US National Climate Assessment have high confidence in detection or attribution of trends in heat waves is the US’

Pielke Jr.: “Neither the IPCC nor the US National Climate Assessment have high confidence in detection or attribution of trends in heat waves is the US So either the IPCC is wrong or the media/activist scientists are wrong. Pick one.”

Posted 1:33 PM by Marc Morano

Watch: Morano on Fox News w/ Jesse Watters on how arsonists are responsible for ‘climate’ wildfires – Not ‘climate change’ – ‘There are other forces at work’

Fox News Channel – Jesse Watters Primetime – Broadcast July 28, 2023 – Are arsonists responsible for global wildfires? ‘The Green Fraud’ author Marc Morano says there are ‘other forces at work’ as wildfires rage across the planet on ‘Jesse Watters Primetime.’

‘It is terrifying’: UN chief declares: ‘The era of global boiling has arrived’ – ‘The era of global warming has ended’ – ‘Children swept away by monsoon rains’

Flashback: UN Picks former president of Socialist International As New Secretary-General (Antonio Guterres)

Meteorologist Dr. Ryan Maue mocks study claiming heatwaves were ‘virtually impossible’ without ‘climate change’ – ‘I guess politicizing the weather means we have to suspend disbelief and erase the past’

Extreme Weather Expert Pielke Jr. rips Wash Post claim of hottest ‘world record’ ocean temp – ‘No it is not a world record. It’s not even highest at that station in past 6 years’

No, the Earth Did Not have an ‘Unprecedented and Terrifying … All-Time High Temperature’ on July 4th – Not the hottest in 100,000 years – NOAA & AP back away from claim

Analysis: Antarctic sea ice extent ‘record low’ due to ‘wind patterns’ – ‘Sea ice is actually thicker than normal’ as ‘the ice edge’ being ‘squeezed closer together’ – Sea ice volume ‘is NOT lowest on record’

Bjorn Lomborg: ‘Warming saves 166,000 lives each year:

Heat deaths make up about 1% of global fatalities a year—almost 600,000 deaths—but cold kills eight times as many people, totaling 4.5 million deaths annually. As temperatures have risen since 2000, heat deaths have increased 0.21%, while cold deaths have dropped 0.51%. Today about 116,000 more people die from heat each year, but 283,000 fewer die from cold. Global warming now prevents more than 166,000 temperature-related fatalities annually.

Watch: Fox host Stuart Varney challenges Morano over heatwave-climate link

Fox Business – Varney & Co. – Broadcast July 19, 2023 

Stuart Varney: Marc Morano from the Climate Depot joins me now. We just heard in Phoenix, they had 19 straight days above 110 degrees. Now, wait, you’re a climate skeptic, is this not the result of climate change?

Marc Morano: “This is not outside the normal bounds of hot summer weather. Yes, it’s a record year. It could be one of the hottest, but here’s the thing. Joe Biden’s EPA has a chart of the heatwave index going back to the 1930s. The 1930s are probably 8 to 10 or 12 times hotter in the United States than anything we’re currently seeing.

Morano: 75% of all state temperature records were broken before the 1950s — these records still stand. Now. This is a way that statistics — when you heard things like CNN or New York Times or others have said this is the ‘hottest’ in Earth’s history. Those claims were based on climate models, which even the NOAA –National Oceanic Atmospheric Administration — backed away from. They are weaponizing hot summers,  heat waves to turn it into some kind of call for climate action. This is not outside the bounds of normal weather, I’m sorry.

Why Are The Seas Warming?

From NOT A LOT OF PEOPLE KNOW THAT

By Paul Homewood

By Justin Rowlatt

BBC News Climate editor

Some of the most intense marine heat increases on Earth have developed in seas around the UK and Ireland, the European Space Agency (Esa) says.

Water temperatures are as much as 3 to 4C above the average for this time of year in some areas, according to analysis by Esa and the Met Office.

The sea is particularly warm off the UK’s east coast from Durham to Aberdeen, and off north-west Ireland.

The Met Office says the reason is partly human-caused climate change.

But other, less-understood natural and man-made factors appear to be driving temperatures up further.

https://www.bbc.co.uk/news/science-environment-65948544

This is part of a wider phenomena, with global SSTs continuing a decades long rise:

https://www.ospo.noaa.gov/Products/ocean/sst/anomaly/index.html

https://climate4you.com/

As Justin Rowlatt writes, this cannot all be blamed on AGW, and natural factors are at play as well. In fact, the heat content of the oceans is so great, that GHGs can have very little direct impact on sea temperatures.

What does have a major impact is the power of the sun. And according to Prof Ole Humlum, solar irradiance, effectively the amount of energy emitted by the sun, rose steadily through the 20thC,although there is no data since 2014:

https://climate4you.com/

When you add in the reduction in cloud cover during the 1990s, you have a very powerful mechanism for ocean warming:

Instead of demonising fossil fuels, we should be trying to understand these natural forces first.