Tag: global warming

Climategate global-warming activist Michael Mann resigns from PennU after celebrating murder of Charlie Kirk

1:02 pm

Michael Mann
Climate activist Michael Mann

Though he has claimed to be a climate scientist for decades, Michael Mann at the University of Pennsylvania has been proven time and again to merely be a leftwing global-warming activist, faking data to make it appear the increase of carbon dioxide in the atmosphere is causing global warming, falsely claiming he was a Nobel laureate winner, and acting to destroy the careers of anyone who challenged the veracity of his research.

Sadly, when these facts were discovered almost two decades ago, about the time the climategate emails were released, the climate science community ignored the facts (a very bad thing for scientists to do) and acted to defend Mann. Thus he was able to continue to publish while keeping his job as a professor in academia, first at Pennsylvania State University and then at the University of Pennsylvania.

Mann’s ability to survive fraud and abuse of power however has finally come to an end, and it did so because he decided to go on line after Charlie Kirk was assassinated to joke about that murder and to slander Kirk by reposting comments that called Kirk “head of Trump’s Hitler Youth.”

Though Mann subsequently denied that was what he was doing, deleting some of his worst tweets while claiming to condemn such violence, it appears no one believes him. As a result, he announced yesterday that he resigning his position at Pennsylvania University in order to become a full time political activist. From his resignation statement:
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Sunspot update: Activity rises slightly in April

1:06 pm

It is the start of the month, so it is of course time for my monthly report on sunspot activity, based on the update that NOAA posts each month to its own graph of sunspots activity. As I have done since the start of Behind the Black in 2010, I take that graph each month and annotate it with extra information to illustrate the larger scientific context.

Sunspot activity in April did nothing to tell us anything about the Sun’s future activity. It rose slightly, but not by enough to suggest that the prediction put forth last month by NOAA scientists that the ramp down to solar minimum has begun is wrong.
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Trump cuts apparently shutting down NASA’s climate office in New York

9:45 am

Schmidt's data tampering, as documented in 2017
Schmidt’s data tampering, as documented in 2016.

As part of the Trump administration’s aggressive effort to trim the federal budget as well as shift the research focus at the federal government’s many science agencies, on April 24, 2025 it revealed that it has canceled the building lease for the Goddard Institute for Space Studies (GISS) in New York that has existed since 1961 and in 2016 and 2017 was found to be tampering with past climate data with no explanation, lowering past temperature numbers while raising more recent ones in order to make the data fit the as-yet unproven theory that human activity is causing global warming.

Those “adjustments” have never been justified in any way. Nor has Gavin Schmidt, the man who heads GISS, ever done anything to correct them. Moreover, when his office was accused of this tampering in 2016 he not only refused to fix or justify the changes, he responded by claiming “planetary warming does not care about the election.” In the years since it has been his office that annually declares each year “the hottest on record,” using these tampered numbers to do so and demonstrating that he has been acting not as a real researcher but as a political operative of the global warming crowd.

Though the office lease is being canceled, GISS has not been shut down, as of now.

While NASA is terminating the lease on the GISS offices, it is not closing the institute itself. Lystrup said in the email that it will help employees move “to remote work agreements in the short-term as the agency seeks a new, permanent space for the team.”

I suspect this statement is merely designed by Trump officials to dampen the screams of opposition against its actions. It is very likely GISS is going away, and most of its employees will have to find new jobs.

The hope is that new scientists can be hired to review these tampered numbers and get them fixed so that climate research in the future can proceed with reliable data.

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Trump cuts to NOAA include major shake-up on how it gathers weather data

9:26 am

According to the budget data that was leaked anonymous last week, the Trump administration is proposing a major restructuring of NOAA’s satellite operations, shifting from building geosynchronous weather/climate satellites in partnership with NASA to focusing on buying weather data from commercial smallsats.

The plan would initially reduce NOAA’s program by two-thirds.

The document suggests NOAA’s National Environmental Satellite, Data and Information Service (NESDIS) “immediately cancel all major instrument and spacecraft contracts on the GeoXO program,” saying the projected costs are “unstainable, lack support of Congress, and are out of step with international peers.”

GeoXO is a $19.6 billion program that includes six satellites and ground infrastructure to significantly enhance NOAA’s ability to monitor weather, map lightning, and track ocean and atmospheric conditions over decades. To maintain observations from geostationary orbit at the conclusion of the Geostationary Operational Environmental Satellite (GOES)-R Series, the White House memo calls on NOAA to “immediately institute a major overhaul to lower lifecycle costs by 50 percent” with annual costs below $500 million, while remaining on schedule to launch the first satellite in 2032.

Rather than expanding the geostationary constellation to include satellites over the East, West and Central United States, the proposal includes only East and West satellites like the GOES-R Series. OMB also recommends an immediate end to NOAA relying on NASA to help it acquire weather satellites.

Maybe the most controversial recommendation calls for NOAA to focus on gathering daily weather data while ending its monitoring of long term ocean and atmospheric climate trends.

The shift from NOAA-built satellites to purchasing weather data from commercially launched and built satellites makes great sense, and is the most likely part of this plan to get implemented. Similarly, ending NOAA’s reliance on NASA will help streamline the fat from both agencies.

Whether the Trump administration can force an end to NOAA’s climate gathering operations is less clear. The politics suggest this will be difficult. The realities however suggest that a major house-cleaning in this area is in order, as there is ample evidence that the scientists running this work have been playing games with the data, manipulating it in order to support their theories of human-caused global warming.

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Sunspot update: NOAA scientists try to hide how wrong they have gotten things

12:00 pm

My monthly sunspot update today will have less to do with the Sun’s sunspot activity itself — which continues to show a very very slow decline from a peak in August 2024 — and more to do with more games-playing by NOAA solar scientists to fool the public into believing they know more than they do.

Below is my annotated version of NOAA’s monthly graph showing the amount of sunspot activity on the Earth-facing hemisphere of the Sun. This graph is significantly different from the graph that NOAA’s scientists have issued for the past few years, with all the changes designed to make it seem as if these scientists’ predictions are on the money, when they have been entirely wrong now for two solar cycles in a row.
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Sunspot update: Sunspot activity remains high but stable

3:02 pm

The uncertainty of science Time for my monthly update on our Sun’s sunspot cycle, based on NOAA’s monthly graph of the sunspot activity on the Earth-facing hemisphere of the Sun, but annotated by me with additional information.

The graph below shows that the number of sunspots in February continued the trend during this solar maximum of being significantly higher than the consensus prediction by a panel of NOAA solar scientists, as indicated by the red curve. At the same time, the count in February was well below the high point during the summer of 2024. Instead, though it went up slightly in February it remains at about the same level we have seen since September.
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Sunspot update: Sunspot activity continued its decline in January

11:58 am

Another month has passed, meaning it is time for another update on the Sun’s sunspot cycle, based on NOAA’s monthly graph tracking that activity but annotated by me with additional information.

In January the decline in sunspot activity on the hemisphere facing Earth since August 2024 continued, with the number of sunspots dropping to a level not seen since May 2023, when the Sun’s was ramping up from solar minimum to solar maximum.
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Sunspot update: Is this sunspot maximum over, or will it become another doubled peaked maximum?

12:43 pm

Well, after almost fifteen years it had to happen at last. In preparing to do my monthly sunspot update today, which I had done every month since I started Behind the Black in 2010, I discovered that I had completely forgotten to do the update in December. Sorry about that.

No matter, the changes from month-to-month are not often significant, and fortunately that turned out to be the case in November and December of 2024. Since my last update at the beginning of November 2024, sunspot activity on the Earth-facing hemisphere of the Sun has been relatively stable, based on NOAA’s monthly graph tracking that activity. In November the activity dropped slightly, only to recover a small amount in December.
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A review of the last half century of major ice calving events in Antarctica detects no trend

11:58 am

47-year trend of large iceberg calving events in Antarctica
Click for original image.

The uncertainty of science: A review by scientists of major ice calving events in Antarctica that have occurred in the last 47 years has detected absolutely no trend either up or down, despite decades of predictions that human caused global warming would cause huge sections of the icecap to break off and catastrophically change the Earth’s climate.

The graph to the right comes from figure 4 of the paper, and illustrates the lack of trend. Note how the actual observations, the blue dots, show no increase in large calving events. From the abstract:

We use 47 years of iceberg size from satellite observations. Our analysis reveals no upward trend in the surface area of the largest annual iceberg over this time frame. This finding suggests that extreme calving events such as the recent 2017 Larsen C iceberg, A68, are statistically unexceptional and that extreme calving events are not necessarily a consequence of climate change.

The researchers of course genuflect to human-caused global warming in their conclusion by stating that the shrinkage predicted in the Antarctic ice cap (but not yet seen in any significant amount) could instead be occurring due to an increase in small calving events.

The lack of an upward trend in annual maximum iceberg area could be attributed to an overall increase in the number of smaller calving events, which may inhibit the development of extremely large calving events. As such, small calving events pose the greatest threat to the current stability of Antarctic ice shelves.

Since there is no detailed or reliable data of the number of smaller calving events, this hypothesis is entirely made up, and carries no weight. It is simply a fantasy created to maintain the fiction of global warming. A more open-minded look at these results would say that the larger events provide an excellent guide to the overall trend, and that the icecap simply isn’t shrinking as predicted.

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Sunspot update: in October solar activity increased after September’s crash

3:35 pm

Time for this month’s sunspot update. As I have done every month since I started this website in 2010, I am posting NOAA’s most recent update of its monthly graph tracking the number of sunspots on the Sun’s Earth-facing hemisphere, adding some additional details to provide context.

In October, following a crash in activity in September, the Sun showed a slight increase the number of sunspots. The increase did not match the drop from the month before, but it brought the activity back up to the level seen during the summer.
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Sunspot update: Sunspot activity crashes in September

3:56 pm

As it is the start of the month, it is time another monthly sunspot update, in which I provide some context and analysis to NOAA’s most recent update of its monthly graph tracking the number of sunspots on the Sun’s Earth-facing hemisphere.

After several months in which the number of sunspots rose considerably each month, in September the sunspot count crashed, dropping precipitously to levels closer to the various predictions of solar scientists, but still far above what they had all expected at this time of the solar maximum.

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Sunspot update: The Sun continues to boom!

12:02 pm

It is time for my monthly sunspot update, taking NOAA’s most recent update of its monthly graph tracking the number of sunspots on the Sun’s Earth-facing hemisphere and adding my own analysis as well as some additional details to provide the larger context.

During August the Sun continued to confound the experts, with the number of sunspots not only greater than July’s high count. the August count exceeded the numbers from December 2001 (215.5 vs 213.4), the last time the Sun was this active.

None of the predictions by anyone in the solar science community had predicted this level of activity.
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Sunspot update: In July the Sun produced the most sunspots in almost a quarter century

9:13 am

Every month since this website began fourteen years ago, when NOAA posts its update of its monthly graph tracking the number of sunspots on the Sun’s Earth-facing hemisphere, I post my own analysis, adding some details to provide the larger context.

Of all those updates — numbering about 168 — this month’s is possibly the most significant. Since around 2008, the Sun began a long period where it was unusually quiet, with the solar maximum that occurred in 2014 possibly the weakest in two hundred years. Before that weak maximum begun, half the solar science community predicted it would be a very powerful maximum, while half predicted a weak maximum. Both got it wrong, though the weak prediction was closer though still too high.

When it came time to predict the next solar maximum, expected around 2025, that same solar science community was once again in disagreement. Most approved a NOAA science panel prediction in April 2020 calling for another weak minimum, similar to the one in 2014. A few dissented, however, and instead predicted in June 2020 that the maximum would be one of the strongest ever. In April 2023 however those dissenters chickened out, and revised their prediction downward, still forecasting a peak higher than the NOAA prediction but no longer anywhere as intense.

Based on what happened on the Sun in July, they should have had more faith in their earlier prediction.
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More garbage science about wildfires and global warming from Nature

12:31 pm

Nature: the science journal that no longer does real science
The science journal which no longer
understands how real science is done

The once highly respected science journal Nature continues its descent into propaganda and bad science, all because it bows unskeptically before the altar of global warming and leftist science fantasies.

Today’s example is an article this week entitled “You’re not imagining it: extreme wildfires are now more common,” describing a new Nature paper that attempted to use satellite data to prove that the intensity of wildfires has increased in the past two decades.

For the current study, published in Nature Ecology and Evolution on 24 June, Cunningham and his colleagues scoured global satellite data for fire activity. They used infrared records to measure the energy intensity of nearly 31 million daily fire events over two decades, focusing on the most extreme ones — roughly 2,900 events. The researchers calculated that there was a 2.2-fold increase in the frequency of extreme events globally in 2003–23, and a 2.3-fold boost in the average intensity of the top 20 most intense fires each year.

We’re all gonna die! As is usual for these crap climate-related studies, the entire goal is to drum up some manufactured new crisis that justifies the claim that the climate is warming. This study is no different, as the article eagerly notes:

Although the study doesn’t directly connect the fire trend to global warming, Cunningham [the study’s lead author] says “there’s almost certainly a significant signal of climate change”. Research has shown that rising temperatures are drying out ecosystems — such as coniferous forests — that are naturally prone to fire. This provides fuel that can boost the fires’ size and longevity. The latest study also found that the energy intensity of the fires increased faster during the night-time over the past two decades than during the daytime, which aligns with evidence4 that rising night-time temperatures are contributing to fire risk.

Not surprisingly, the New York Times immediately jumped on the bandwagon with its own article that accepts the conclusions of this research with utter naivety.

What junk. First, Cunningham fails to note this minor fact mentioned in the abstract of his own paper:
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Sunspot update: In May the Sun went boom!

12:43 pm

As I have done at the start of every month since I begun this webpage back in 2010, I am posting NOAA’smonthly update of its graph tracking the number of sunspots on the Sun’s Earth-facing hemisphere, adding to it several additional details to provide some larger context.

While April had showed only a small uptick in sunspot activity, in May the sunspot activity on the Sun went boom, setting a new high for sunspots during this solar maximum as well as the highest sunspot count since September 2002. The sunspot count of 171.7 smashed the previous high of 160 this cycle, set in June 2023. This new high underlined was by the large solar flare on May 9th that sent the most powerful geomagnetic storm to hit the Earth’s magnetic field in many decades, producing spectacular auroras in many low latitudes.
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SpaceX launches European/Japanese climate satellite

11:44 pm

SpaceX today successfully launched a joint European/Japanese satellite designed to study the climate, its Falcon 9 rocket lifting off from Vandenberg in California.

The first stage completed its seventh flight, landing safely back at Vandenberg. This was also SpaceX’s second launch today, from opposite coasts.

The leaders in the 2024 launch race:

57 SpaceX
23 China
7 Russia
6 Rocket Lab

American private enterprise now leads the world combined in successful launches, 65 to 36, while SpaceX by itself leads the entire world, including other American companies, 57 to 44.

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Rocket Lab launches NASA climate satellite

10:41 pm

Rocket Lab today successfully launched the first of two NASA PREFIRE climate satellites, its Electron rocket lifting off from its launchpad in New Zealand.

The leaders in the 2024 launch race:

55 SpaceX
23 China
7 Russia
6 Rocket Lab

American private enterprise now leads the world combined in successful launches, 63 to 36, while SpaceX by itself leads the entire world, including other American companies, 55 to 44.

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Sunspot update: A minor uptick in sunspot activity in April

12:28 pm

It is that time of the month again. Yesterday NOAA posted its monthly update of its graph tracking the number of sunspots on the Sun’s Earth-facing hemisphere. As I have done now for every month since I began this website in 2010, I have posted this updated graph below, with several additional details to provide some larger context.

In April the number of sunspots on the Sun went up somewhat, the count rising to the highest level since the count hit its peak of activity last summer. The sunspot number in April, 136.5, was however still significantly less than the 2023 peak of 160. Thus it appears the Sun is likely still the middle saddle of a doubled-peaked relatively weak solar maximum, with the Sun doing what I predicted in February 2024:
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Remember: The climate data foisted on us by NOAA is based 30% on nonexistent weather stations

2:24 pm

The uselessness of the global temperature record

A story yesterday at Zero Hedge noted once again that the yearly global data that NOAA inflicts on us, each year claiming that a new record has been set as the hottest year ever, is all based on fake data, with about one-third of the data created from weather stations that no longer exist.

The problem, say experts, is that an increasing number of USHCN’s stations don’t exist anymore. “They are physically gone—but still report data—like magic,” said Lt. Col. John Shewchuk, a certified consulting meteorologist. “NOAA fabricates temperature data for more than 30 percent of the 1,218 USHCN reporting stations that no longer exist.”

He calls them “ghost” stations.

Mr. Shewchuck said USHCN stations reached a maximum of 1,218 stations in 1957, but after 1990 the number of active stations began declining due to aging equipment and personnel retirements. NOAA still records data from these ghost stations by taking the temperature readings from surrounding stations, and recording their average for the ghost station, followed by an “E,” for estimate.

This is not a new story. » Read more

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Sunspot update: The weak solar maximum continues

10:38 am

NOAA yesterday posted its updated monthly graph tracking the number of sunspots on the Sun’s Earth-facing hemisphere. As I do every month, I have posted this graph below, with several additional details to provide some larger context.

The sunspot activity in March dropped, continuing the pattern of the last five months, where the Sun appears to be in a stable plateau after reaching a high peak in the summer of 2023. It continues to appear that we are in the middle low saddle of a double-peaked relatively weak solar maximum, with the Sun doing what I predicted in February:

If we are now in maximum, sunspot activity throughout the rest of 2024 should fluctuate at the level it is right now, with it suddenly rising again near the end of the year for a period lasting through the first half of 2025. After that it should begin its ramp down to solar minimum.

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Sunspot update: The Sun continues what appears will be a weak maximum

10:30 am

As I have done each month since 2011, I am now posting an annotated version of NOAA’s monthly graph, tracking the solar sunspot activity on the Earth-facing hemisphere of the Sun. The NOAA updated graph was posted at the start of March, covering activity through the end of February, so this report is a little later than normal.

That graph is below. In February sunspot activity remained essentially steady, only slightly higher than the activity from the month before. Those numbers also hovered at about the same level seen since August 2023.
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Sunspot update: The Sun in January acted like solar maximum is here

11:11 am

In my monthly sunspot update at the start of January, I asked in the headline “Are we now in the next solar maximum?”

The Sun’s sunspot activity in January since then has apparently answered that question. NOAA this week posted its monthly update of its graph showing solar sunspot activity on the Sun’s Earth-facing hemisphere, and as I do every month since 2011, I have posted that graph below, with annotations to provide a larger context.
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All climate models continue to be wrong, overstating warming to significant degrees

12:24 pm

Climate models versus data
Click for full resolution graph.

According to a new analysis comparing actual satellite observations of the climate since 1979 with all the climate models used by the IPCC and global warming activitists, it appears that every single climate model continues to overstate significantly their predictions of warming, with that error increasing with time. From the paper’s abstract:

Warming of the global climate system over the past half-century has averaged 43 percent less than that produced by computerized climate models used to promote changes in energy policy. In the United States during summer, the observed warming is much weaker than that produced by all 36 climate models surveyed here.

While the cause of this relatively benign warming could theoretically be entirely due to humanity’s production of carbon dioxide from fossil-fuel burning, this claim cannot be demonstrated through science. At least some of the measured warming could be natural. Contrary to media reports and environmental organizations’ press releases, global warming offers no justification for carbon-based regulation.

The research was done by Roy Spencer of the University of Alabama, who has also been the principal investigator on one climate satellite. The graph to the right, chart 2 of his paper, shows the error of every single climate model, with some models so wrong they are essentially useless to predict anything.

What is significant about this research is not that these models are wrong, it is that they are all wrong in the same direction. If the climate science community was approaching this work honestly with an effort to be unbiased, we should should expect some models to predict too little warming, and others too much. That all predict too much warming suggests that every single one of these models is tainted by politics and confirmation bias. The people who write the models want global warming to occur (almost certainly for political reasons), and so their models always lean in that direction.

What is even more disturbing is that Spencer’s work shows that the difference between the models and observations is growing, as indicated by chart 3 from his paper, below.
» Read more

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Sunspot update: Are we now in the next solar maximum?

9:57 am

Time for my monthly update on the Sun’s sunspot activity has it proceeds through its eleven-year sunspot cycle. NOAA has released its update of its monthly graph showing the number of sunspots on the Sun’s Earth-facing hemisphere, and I have posted it below, annotated with further details to provide a larger context.

In December sunspot activity increased slightly for the second month in a row, but only by a little bit. The number of sunspots for the month was still significantly below the highs seen in the summer, and continue to suggest that the Sun has already entered solar maximum (two years early), and like the previous two solar maximums in 2001 and 2013, will be double peaked.
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Sunspot update: October activity drops almost to predicted levels

3:55 pm

NOAA today posted its updated monthly graph tracking the number of sunspots on the Sun’s Earth-facing hemisphere. As I do every month, I have posted this graph below, with several additional details to provide some larger context.

In October the sunspot count dropped so much from the activity in September that the total count was for the first time since the middle of 2021 actually very close to the predicted numbers first put forth by NOAA’s solar science panel in April 2020.

» Read more

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Scientists: The solar cycle was only 8 years long during the Maunder Minimum in the 1600s

9:58 am

Using archival records gathered in Korea during the 1600s when the Sun was undergoing a long period of almost no sunspots — called the Maunder Minimum — scientists have discovered evidence that the solar cycle during that time was only 8 years long.

You can read their paper here. Since almost no sunspots were visible at that time, the scientists used reports of aurora in Korea to determine periods when the Sun was more active. From their abstract:

By analyzing the variations in solar activity-related equatorial auroras recorded in Korean historical books in the vicinity of a low-intensity paleo-West Pacific geomagnetic anomaly, we find clear evidence of an 8-year solar cycle rather than the normal 11-year cycle during the Maunder Minimum.

This 8-year cycle is shorter than the 9-year cycle that other researchers had estimated based on the few sunspots that did appear during this grand minimum. Both conclusions however challenge what is known of the Sun. Since the 11-year cycle resumed in the 1700s, short cycles have generally been associated with very active periods, the opposite of what has been found during Maunder.

In other words, we know better what happened, but have no understanding of why. Since the Maunder Minimum appears associated with the Little Ice Age of the 1600s, and fits other data that says the climate cools when the Sun produces few sunspots, gaining some understanding of this process is important for understanding past and future changes to the global climate.

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Sunspot update: Activity rises in September but not significantly

11:15 am

Another month has passed, and it is once again time to post my annotated graph of NOAA’s monthly update of its graph that tracks the number of sunspots on the Sun’s Earth-facing hemisphere. The new graph is posted below, with several additional details to provide some larger context.

Last month we saw a drastic drop in August of sunspot activity, suggesting that the next maximum might possibly have been reached, though many months earlier than predicted. This month’s graph below, which shows an increase in activity in September but still well below the highs seen in June and July, strengthens that conclusion.
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The American Geophysical Union shows off its ignorance of the scientific method

1:03 pm

Recently a climate scientist caused an uproar among scientists and peer-review journals when he admitted in an op-ed that the only way he could get his climate paper published in the journal Nature was to fake his results in order to fit them to the narrative that human-caused global warming is causing all our environmental problems.

In my paper, we didn’t bother to study the influence of these other obviously relevant factors. Did I know that including them would make for a more realistic and useful analysis? I did. But I also knew that it would detract from the clean narrative centered on the negative impact of climate change and thus decrease the odds that the paper would pass muster with Nature’s editors and reviewers.

While that op-ed brutally exposed the political biases at Nature that make it impossible to get honest research published, it only told a part of the story. Nature is only one journal, and if it was the only place this corruption of science was occurring, the problem would be manageable.

In truth it is only one example of a far more widespread problem, because it is now practically impossible for any skeptic of global warming to get his or her work published in almost any scientific journal. Worse, most of the major science organizations worldwide no longer simply favor pro-global warming climate research, they act aggressively to promote only one kind of result, to the point that the things they publish sometimes are little different than Soviet propaganda.

The American Geophysical Union, where science is no longer practiced
The American Geophysical Union, where
science is no longer practiced

As a prime example, I want to focus today on the American Geophysical Union (AGU), an scientific organization initially formed as an umbrella group to help American scientists publish and publicize their research on the study of the Earth, its interior, and its nature as a planet. To do so the AGU publishes a wide range of peer-review journals, all intended as fair-minded outlets for new research.

Sadly, in the past two decades the AG abandoned that primary function. For example, it has made its global-warming biases clear for several decades, essentially telling every climate scientist worldwide that if you submit any paper that raises any questions about global warming, it will be rejected outright.

More recently however the AGU has become even more up front and public about its close-minded approval of the as-yet unproven theory that humans are causing the climate to heat up. » Read more

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The sunspot count in August demonstrates fully the utter uncertainty of science

1:46 pm

In doing these sunspot updates every month since I started Behind the Black thirteen years ago, one of the repeated common themes has been noting how little we really know about the basic fundamental processes within the Sun. We know the process involves nuclear fusion combined with fission, and that process also creates a powerful magnetic field that every eleven years flips in its polarity. We also know that this eleven year cycle corresponds to an eleven year cycle of rising and then falling sunspot activity.

The devil however is in the details, and we know very little about those details. How those larger processes link to the specific changing features on the Sun remains little understood, if at all. The sudden and entirely unexpected steep drop in sunspot activity in August, as noted in the release yesterday of NOAA’s monthly update of its graph that tracks the number of sunspots on the Sun’s Earth-facing hemisphere, demonstrates this level of ignorance quite starkly.
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