Archive for the ‘Temperature’ Category

Credit: NASA

Report: ‘With its steady stream of temperature measurements, GOLD is painting a picture of an upper atmosphere much more sensitive to the magnetic conditions around Earth than previously thought.’ Interesting – does this impact climate models?
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New results from NASA satellite data show that space weather—the changing conditions in space driven by the sun—can heat up Earth’s hottest and highest atmospheric layer, says Phys.org.

The findings, published in July in Geophysical Research Letters, used data from NASA’s Global Observations of the Limb and Disk, or GOLD mission. Launched in 2018 aboard the SES-14 communications satellite, GOLD looks down on Earth’s upper atmosphere from what’s known as geosynchronous orbit, effectively “hovering” over the western hemisphere as Earth turns.

GOLD’s unique position gives it a stable view of one entire face of the globe—called the disk—where it scans the temperature of Earth’s upper atmosphere every 30 minutes. GOLD scans the thermosphere from a position in geostationary orbit, which stays over one particular spot on Earth as it orbits and the planet rotates.

“We found results that were not previously possible because of the kind of data that we get from GOLD,” said Fazlul Laskar, who led the research. Dr. Laskar is a research associate at the Laboratory for Atmospheric and Space Physics at the University of Colorado, Boulder.

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Wyoming coal trains [image credit: energycatalyzer3.com/

Welcome to the real world. The UN loves to tell the world to wind down its fuel-burning ways in a hurry to satisfy the atmospheric trace gas theories of certain ‘climate experts’, but equally viable and affordable alternatives on the scale required are proving hard to find. Energy being ‘clean’ or not is a different issue, but a useful prop when your main argument is floundering.
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The world needs to cut by more than half its production of coal, oil and gas in the coming decade to maintain a chance of keeping global warming from reaching dangerous levels, according to a U.N.-backed study released Wednesday, says Phys.org.

The report published by the U.N. Environment Program found that while governments have made ambitious pledges to curb greenhouse gas emissions, they are still planning to extract double the amount of fossil fuels in 2030 than what would be consistent with the 2015 Paris climate accord’s goal of keeping the global temperature rise below 1.5 degrees Celsius (2.7 degrees Fahrenheit).

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Antarctic sea ice [image credit: BBC]

We’re asked to believe this is just a blip in the relentless march of supposedly human-caused global warming, but let’s give it a few more years to see how things progress.
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Antarctica’s frigid winter temperatures are in contrast to trends in the rest of the world, which overall recorded its fourth hottest summer, says LiveScience.

Between April and September, a research station sitting on a high plateau in Antarctica, registered an average temperature of minus 78 degrees Fahrenheit (minus 61 degrees Celsius).

That’s the coldest temperature recorded since record keeping began in 1957, and about 4.5 F (2.5 C) lower than the most recent 30-year average, according to The Washington Post.

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Halfway through this article we see the study’s findings were made ‘where increases in sea surface temperatures have been recorded because of the reversal of a climatic condition called the Pacific Decadal Oscillation, with likely connections to global climate change’. So the PDO has changed, which it regularly will do as its name (‘decadal’) indicates, and they want to tie the consequences to humans? That seems to be implied, although left vague by the usual catch-all term ‘climate change’.
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WASHINGTON—Warming ocean waters have caused a drop in the brightness of the Earth, according to a new study, says Eurekalert.

Researchers used decades of measurements of earthshine — the light reflected from Earth that illuminates the surface of the Moon to find that there has been a significant drop in Earth’s reflectance over the past two decades.

The Earth is now reflecting about half a watt less light per square meter than it was 20 years ago, with most of the drop occurring in the last three years of earthshine data, according to the new study in the AGU journal Geophysical Research Letters, which publishes high-impact, short-format reports with immediate implications spanning all Earth and space sciences.

That’s the equivalent of 0.5% decrease in the Earth’s reflectance. Earth reflects about 30% of the sunlight that shines on it.

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Ham House

That increase in average temperatures of around one degree Celsius since the mid-19th century must be really stressful. It’s probably cheaper to offer siestas than to buy and operate suitable ventilation systems.
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The National Trust is giving its workers Mediterranean-style siestas in summer due to climate change making the weather increasingly hot, reports Indy100.com.

Staff and volunteers in the south of England will start the day earlier, finish later, and have a long lunch break to avoid the hottest part of the day, as people already do in countries such as Italy and Spain.

A spokesperson for the charity told The Guardian: “It’s fair to say that, as we experience more extreme temperatures, we will be looking to offer Mediterranean working hours, especially in the east which is likely to experience more frequent higher temperatures to ensure the health and safety of our staff and volunteers.”

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Finding the Sun the main player in climate would be the default position in any normal world, but now it gets billed as the challenger.

NOT A LOT OF PEOPLE KNOW THAT

By Paul Homewood

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The sun and not human emissions of carbon dioxide (CO2) may be the main cause of warmer temperatures in recent decades, according to a new study with findings that sharply contradict the conclusions of the United Nations (UN) Intergovernmental Panel on Climate Change (IPCC).

The peer-reviewed paper, produced by a team of almost two dozen scientists from around the world, concluded that previous studies did not adequately consider the role of solar energy in explaining increased temperatures.

The new study was released just as the UN released its sixth “Assessment Report,” known as AR6, that once again argued in favor of the view that man-kind’s emissions of CO2 were to blame for global warming. The report said human responsibility was “unequivocal.”

But the new study casts serious doubt on the hypothesis.

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Climate Modeling Civil War

Posted: August 16, 2021 by oldbrew in climate, modelling, Temperature, Uncertainty
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‘You’re more wrong than we are!’ – seems to be the state of play here. Are there any models that wouldn’t get improved results if their so-called ‘greenhouse gas’ forcing was reduced or even removed?

PA Pundits - International

By David Wojick, Ph.D. ~

Looks like the climate modeling community may have a civil war on its hands. Some serious players are rejecting the new hot models, but probably not their owners. If so we will see modeler against modeler. Be still my heart.

The first loud public shot has been fired by the prestigious journal Science (actually it is more of a magazine but never mind). Science is devoutly alarmist but they reject the hot models in the strongest possible terms (in a lengthy article that is not paywalled).

Their blunt article title is “U.N. climate panel confronts implausibly hot forecasts of future warming“. When it comes to science, “implausibly hot” is very strong language. Scientific language is normally extremely polite. (The U.N. climate panel is of course the IPCC.)

But it gets even stronger in the text. Here we find NASA’s Gavin Schmidt, arguably…

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lanina-winterNo imminent upward pressure on global temperatures resulting from the ENSO phenomenon, judging by the latest analysis. Possibly the opposite, if current trends continue.
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Aug.12 (Reuters) — The La Niña weather pattern could potentially develop during the August-October season, and last through the 2021-22 winter, the U.S. government’s National Weather Service said on Thursday. (Yahoo Finance reporting.)

The La Niña pattern is characterized by unusually low temperatures in the equatorial Pacific Ocean and is linked to floods and drought.

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So say the totally predictable climate cultists in the political summary version of the IPCC’s not yet published report, version whatever.

NOT A LOT OF PEOPLE KNOW THAT

By Paul Homewood

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Humanity’s damaging impact on the climate is a “statement of fact”, say UN scientists in a landmark study.

The report says that ongoing emissions of warming gases could also see a key temperature limit broken in just over a decade.

The authors also show that a rise in sea levels approaching 2m by the end of this century “cannot be ruled out”.

But there is new hope that deep cuts in emissions of greenhouse gases could stabilise rising temperatures.

This sober assessment from the Intergovernmental Panel on Climate Change (IPCC) features in a 42-page document known as the Summary for Policymakers.

It leads a series of reports that will be published over coming months and is the first major review of the science of climate change since 2013. Its release comes less than three months before a key climate summit in Glasgow known as COP26.

“Today’s…

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Arctic sea ice [image credit: Geoscience Daily]

‘New research is pouring cold water on once-hot theory’ – WashPo. Researchers refer to ‘overestimation’. (Weird in this context at least tends to mean something like ‘not well understood’).
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An influential, highly publicized theory — that a warming Arctic is causing more intense winter outbreaks of cold and snow in midlatitudes — is hitting resistance from an ongoing sequence of studies, including the most comprehensive polar modeling to date, says the Washington Post.

The idea, first put forth in a 2012 paper by Jennifer Francis, now at the Woodwell Climate Research Center, and Stephen Vavrus, at the University of Wisconsin at Madison, is that two well-established trends — Arctic amplification (intensified global warming at higher latitudes) and depleted sea ice — can force the polar jet stream to dip farther south, thus causing more intense bouts of winter weather than might have otherwise occurred.

Over the past decade, this hypothesis sparked widespread public interest and scientific debate, as various high-profile cold waves and snow onslaughts hit North America and Eurasia, including a deadly, prolonged cold wave in Texas last February.

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brazilian-coffeeDude! What’s this cold white stuff doing here?
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Brazil has experienced rare heavy snowfall since Thursday, threatening crops and bewildering locals who don’t usually see snow, reports The Independent.

More than 40 cities in the state of Rio Grande do Sul had icy conditions and at least 33 municipalities had snow, reported the meteorology company Somar Meteorologia.

On Friday, there were warnings of cold temperatures as a polar air mass travelled toward the centre-south of the agricultural powerhouse, threatening coffee, sugarcane and orange crops with frost.

The unusually cold temperature in the country has already forced coffee prices to rise.

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earth-temp

Image credit: livescience.com

It’s not as hot as we thought, they could say. That’s been obvious for a long time, but the defensive bluster of modellers has finally dried up, it seems. Time to dump the pointless and ‘implausible’ extreme scenarios and think seriously about some of the assumptions, such as greenhouse gas theory and its supposed climate consequences, and other suggested shortcomings.
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Leading climate scientists conceded that models used to estimate how much the world will warm with rising levels of carbon dioxide in the atmosphere are running too hot, reports The Australian (via The GWPF).

“It’s become clear over the last year or so that we can’t avoid this,” Gavin Schmidt, director of NASA’s Goddard Institute for Space Studies, told Science ­magazine.

The admission is seen as a significant development by scientists who argue that not enough attention has been paid to natural ­cycles in the earth’s climate.

It puts another question mark over the use of the most extreme scenarios generated by models, RCP8.5, to estimate what could be expected in a warming world.

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Smoke from forest fires in Southern California [image credit: NASA]

Will this be the end of climate alarmists feeding their confirmation biases over these events, resulting in the usual hysteria against atmospheric gases generated by humans? Almost certainly not, as they can still cling to the notion that the summer fires aren’t mostly due to lightning, arson or faulty power lines. Another report says: ‘Further analyses suggested that large fires were not associated with higher temperatures’.
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A team of researchers affiliated with multiple institutions in the U.S. and one in Canada has found that the increasing number of large fires in Southern California during the autumn and winter months is mostly due to the Santa Ana winds and power line failures, rather than rising temperatures, reports Phys.org.

In their paper published in the journal Science Advances, the group describes their study of fires in Southern California going back to 1948.

Large wildfires in California regularly make the news because of their magnitude and ferocity.

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During a total solar eclipse, the Sun’s corona and prominences are visible to the naked eye [image credit: Luc Viatour / https://Lucnix.be ]

Expecting a variable, researchers found a constant.
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From traversing sand dunes in the Sahara Desert to keeping watch for polar bears in the Arctic, a group of solar scientists known as the “Solar Wind Sherpas” led by Shadia Habbal, have traveled to the ends of the Earth to scientifically observe total solar eclipses—the fleeting moments when the Moon completely blocks the Sun, temporarily turning day into night.

With the images, they’ve uncovered a surprising finding about the Sun’s wind and its wispy outer atmosphere—the corona—which is only visible in its entirety during an eclipse, says NASA (via Phys.org).

From more than a decade’s worth of total eclipse observations taken around the world, the team noticed that the corona maintains a fairly constant temperature, despite dynamical changes to the region that occur on an 11-year rotation known as the solar cycle.

Similarly, the solar wind—the steady stream of particles the Sun releases from the corona out across the solar system—matches that same temperature.

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ocean wavesSome climate theories aren’t plausible either, including the one that thinks that atmospheric goings-on are more important than ocean dynamics like El Niño and La Niña. But the fear show must go on.
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Today the Hamburg-based Cluster of Excellence “Climate, Climatic Change, and Society” (CLICCS) publishes a new, essential study on climate futures, reports Phys.org.

The study represents the first systematic attempt to investigate whether a climate future with net-zero carbon emissions is not only possible but also plausible.

The authors examine plausibility from a technical-economic perspective, but also with regard to the societal changes necessary for such a future.

They conclude that deep decarbonization by 2050 is currently not plausible—the current efforts to bring about societal transformation need to be far more ambitious.

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Credit: airbus.com

As this article says: ‘The wealth of scientific evidence points overwhelmingly to the conclusion that cold, not heat, kills.’ But anything alarmist, however tenuous, seems to get a free pass from so-called ‘fact checkers’ who want humans to be blamed for any real or imagined climate variation.
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Recently, there have been a number of media stories claiming modest global warming has caused more than a third of heat-related death around the world between 1991 and 2018, says H. Sterling Burnett @ Climate Change Dispatch.

These stories all reference a single study published in Nature Climate Change to support their claims. This study is purely speculative, based on climate model projections and epidemiological studies that don’t control for significant confounding factors.

By contrast, numerous studies show, a modestly warmer world should result in fewer temperature-related deaths overall, not more.

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chinacoal

Coal-hungry China [image credit: democraticunderground.com]

Where’s the evidence that tinkering with carbon dioxide output can control anything? A think-tank chief said: “It puts the burden on any fossil fuel development now to prove that it’s 1.5C compatible”. How anyone is supposed to do that remains a mystery.
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The Group of Seven wealthy nations on Friday agreed to end state financing of coal-fired power plants by the end of this year, and to “mostly decarbonise” electricity supplies in the 2030s, reports France24.

Ahead of a leaders meeting in Britain next month, G7 countries’ climate and environment ministers also reaffirmed their commitment to keep temperature rises below 1.5 degrees Celsius by 2050, following a two-day virtual meeting.

Scientists say any increases beyond that will trigger uncontrollable climate change. [Talkshop comment: *some* scientists say…].

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model_warm

Climate models overheating

Explanation, or vague excuses? They seem to be saying the models are a wonder, just a shame they don’t reflect reality – mainly due to pesky natural variation.
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A new study led by Dr. Wei and Dr. Qiao from the First Institute of Oceanography, Ministry of Natural Resources provides an evaluation of the performance of the newly released CMIP6 models in simulating the global warming slowdown observed in the early 2000s, says Phys.org.

This study reveals that the key in simulating and predicting near-term temperate change is to correctly separate and simulate the two distinct signals, i.e., the human-induced long-term warming trend and natural variabilities, especially those at interannual, interdecadal and multidecadal scales.

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Credit: NASA – GISS

They refer here to the same AMOC that was recently claimed by Mann et al to be of no significance, or even not to exist at all. But empirical evidence has its uses.
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From 50,000 to 15,000 years ago, during the last ice age, Earth’s climate wobbled between cooler and warmer periods punctuated by occasional, dramatic ice-melting events, says Phys.org.

Previous research has suggested that these oscillations were likely influenced by changes in the Atlantic Meridional Overturning Circulation (AMOC), a pattern of currents that carry warm, tropical water to the North Atlantic, where it cools, sinks, and flows back south. However, the precise role played by the AMOC in ancient climate fluctuations has been unclear.

Now Toucanne et al. have reconstructed the historical flow of a key current in the upper part (the northward flow) of the AMOC, the Glacial Eastern Boundary Current (GEBC), shedding new light on how the AMOC can drive sudden changes in climate.

The GEBC flowed northward along Europe’s continental margin during the last ice age (it persists today as the European Slope Current). To better understand the GEBC’s role in the AMOC, the researchers collected six seafloor sediment cores off the coast of France.

Analysis of grain sizes and isotope levels in the core layers revealed the current’s strength when each layer was deposited, yielding the first high-resolution, 50,000-year historical record of the current.

This new historical record shows that the GEBC flowed faster during warmer intervals of the last ice age but weakened during the coldest periods.

The timing of these changes aligns well with previously established records on AMOC speed and the southward return flow of deep waters to the west.

Comparing the history of the GEBC with other records also shows that major ice-melting events, in which ice age glaciers released huge amounts of freshwater into the Atlantic, correspond with periodic weakening of the current and of the AMOC in general.

Full article here.

Adios, Global Warming

Posted: May 11, 2021 by oldbrew in climate, Temperature
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We await to see what effect, if any, the current low-sunspot solar cycles may have on the intensity and frequency of the next few El Niños.

Science Matters

a62edf0f39de560a219b7262163b0d45

The post below updates the UAH record of air temperatures over land and ocean.  But as an overview consider how recent rapid cooling has now completely overcome the warming from the last 3 El Ninos (1998, 2010 and 2016).  The UAH record shows that the effects of the last one are now gone as of April 2021. (UAH baseline is now 1991-2020).

UAH Global 1995to202104 w co2 overlayFor reference I added an overlay of CO2 annual concentrations as measured at Moana Loa.  While temperatures fluctuated up and down ending flat, CO2 went up steadily by ~55 ppm, a 15% increase.

Furthermore, going back to previous warmings prior to the satellite record shows that the entire rise of 0.8C since 1947 is due to oceanic, not human activity.

 

gmt-warming-events

The animation is an update of a previous analysis from Dr. Murry Salby.  These graphs use Hadcrut4 and include the 2016 El Nino warming event.  The exhibit…

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