Archives de catégorie : climate-debate

“There Has Never Been An Energy Transition”

by David Middleton, September 20, 2018T in WUWT

One of my favorite sayings is, “We didn’t leave the Stone Age because we ran out of stones.”  Technically we never left the Stone Age because we use more rocks now than we did in the Stone Age.

And we never left the “Wood Age.”  There was no energy transition from biomass (wood) to fossil fuels. Coal piled on top of biomass, oil piled on top of coal and natural gas piled on top of oil

Scientists Throw Cold Water On Claims Linking Hurricane Florence To Global Warming

by M. Bastasch, September 19, 2018 in ClimateChangeDispatch

Hurricane Florence made landfall on Friday in North Carolina, bringing heavy rains and flooding. But before the storm touched down in the U.S., scientists and news outlets were already linking the storm to global warming.

However, not all scientists agree that man-made warming is making hurricanes, including Florence, bigger, slower and wetter as is often claimed in the media.

Climatologist Judith Curry called efforts by the “mainstream climate community” to link Florence to man-made global warming “woefully inadequate and misleading to scientists, the public and policymakers.”

Climategate continues: Release of University of Arizona Climate Emails Imminent

by Anthony Watts, September 19, 2018 in WUWT

Nearly seven years ago, on December 7th, 2011, the Free Market Environmental Law Clinic’s (FME Law) sought public records from the University of Arizona related to the Mann-Bradley-Hughes temperature reconstruction that looks like a hockey stick, and development of an Intergovernmental Panel on Climate Change (IPCC) report.  They refused much of the request and FME Law sued.  Now (on September 18th, 2018) legal counsel for the University informed FME Law that they were done, that they would be withdrawing their appeal of the trial court’s decision, end the case and disclose the records.

Included in the release will be emails that, for example, provide the full context of the discussions between Michael Mann and colleagues and Chick Keller on whether there was a medieval warm period and a little ice age.  Mann, Bradley and Hughes (MBH) were the authors of the “hockey stick” graph that became the icon of climate alarmism.  Dr. Keller was, at the time, Director of the Institute of Geophysics and Planetary Physics at the Los Alamos National Lab and affiliated with the University of California at San Diego, and wanted to reconcile data which appeared to refute the MBH papers.  Also within this collection will be the full discussion on events surrounding an effort to remove editors of journals willing to publish peer-reviewed papers that contradicted the MBH and related papers on which climate alarmism was built.  This collection of emails is particularly important in that they will provide the full context of Climategate emails that have been described as “cherry picking.”


by Jo Moreau, 20 septembre 2018, in Belgotopia

Les côtes de Flandre n’ont pas toujours été aussi paisibles qu’aujourd’hui, et je n’oublie pas le raz-de-marée du 31 janvier 1953 qui toucha les Pays-Bas et notre littoral, faisant plus de 1800 morts et des dégâts considérables. (photo : à Ostende).

Pêchés dans diverses chroniques et ouvrages (notamment “La Flandre mystérieuse” de Saint Hilaire), j’en ai fait une compilation qui n’a bien entendu aucune prétention scientifique ou historique, mais ces événements avaient laissé une trace dans la mémoire populaire, trace qui a hélas fortement tendance à s’effacer.

J’y ajoute quelques événements survenus en France et aux Pays-Bas, dont on peut raisonnablement penser au vu de leur localisation, qu’ils eurent des conséquences sur nos côtes

How constant is the “solar constant?”

by Andy May, September 19, 2018 in WUWT

The IPCC lowered their estimate of the impact of solar variability on the Earth’s climate from the already low value of 0.12 W/m2 (Watts per square-meter) given in their fourth report (AR4), to a still lower value of 0.05 W/m2 in the 2013 fifth report (AR5), the new value is illustrated in Figure 1. These are long term values, estimated for the 261-year period 1750-2011 and they apply to the “baseline” of the Schwabe ~11-year solar (or sunspot) cycle, which we will simply call the “solar cycle” in this post. The baseline of the solar cycle is the issue since the peaks are known to vary. The Sun’s output (total solar irradiance or “TSI”) is known to vary at all time scales (Kopp 2016), the question is by how much. The magnitude of short-term changes, less than 11 years, in solar output are known relatively accurately, to better than ±0.1 W/m2. But, the magnitude of solar variability over longer periods of time is poorly understood. Yet, small changes in solar output over long periods of time can affect the Earth’s climate in significant ways (Eddy 1976) and (Eddy 2009).

Statistical study of past temperature records suggest possible undetected natural climate forcing cycles

by Anthony Watts, September 18, 2018 in WUWT

Godfrey Dack writes in with this:

Everyone will be familiar with the difficulty of listening to a conversation held with a friend in a crowded room with many other conversations going on at the same time. So it is with many fields of scientific investigation where it is difficult to tease a particular trend out from masses of data. In the first case, we could call the friend’s conversation ‘The Signal’, and the background conversations ‘The Noise’.

In looking at climate data, trends (the signal) can be graphically represented by a (generally) smooth curve, usually flanked by a range of experimentally predicted or actually measured values (the noise). Joining up every point on a graph of such data would give a jagged line which could be thought of as a combination of many alternating functions over a wide range of frequencies.

“What Will Persuade Conservatives To Fight Climate Change?” The same things that would persuade us to fight plate tectonics, entropy and the Second Law of Thermodynamics!

by David Middleton, September 17, 2019 in WUWT

Yes… I know entropy falls under the Second Law of Thermodynamics… But I doubt the author of the Clean Technica article does. [Author’s note: By “falls under the Second Law of Thermodynamics, I don’t mean decreases; I mean it falls under the “jurisdiction” of the Second Law of Thermodynamics.]

Guest ridicule by David Middleton

Among today’s Real Clear Energy headlines, almost totally unrelated to energy: What Will Persuade Conservatives To Fight Climate Change?

Negative climate feedback: more ships in the Arctic mean more cooling

by Anthony Watts, September 17, 2018 in WUWT

This article claim ships will “be able to sail right over the North Pole” by 2050 due to warming, but at the same time say ship tracks will make more clouds and cool the Arctic. Of course, anything is possible with the help of climate models.

More ships and more clouds mean cooling in the Arctic

With sea ice in the Arctic melting at an alarming rate, opportunities for trans-Arctic shipping are opening up, and by mid-century ships will be able to sail right over the North Pole – something not previously possible for humankind.

Evolutions récentes du CO2 atmosphérique

by J.C. Maurin, 16 septembre 2018, in Science,Climate,Energie

Dans les années 80, la découverte dans les archives glaciaires d’une corrélation entre température et taux de CO2 permit de soupçonner une influence anthropique sur le climat: les taux mesurés depuis 1958 étaient supérieurs aux taux des archives glaciaires.
L’IPPC (GIEC) fut créé en 1988 par 2 organismes: United Nations Environment Programme (UNEP) et  World Meteorological Organization (WMO). Le GIEC attribue l’intégralité de la hausse du taux de CO2 depuis un siècle à l’influence humaine.  Pour les dernières décennies, nous examinerons ici les mesures disponibles, les corrélations CO2 / température, enfin le modèle anthropique GIEC sera confronté à un modèle concurrent.

Hurricane Florence is not climate change or global warming. It’s just the weather.

by Roy W. Spencer, September 15, 2018 in USAToday

Even before Hurricane Florence made landfall somewhere near the border of North and South Carolina, predicted damage from potentially catastrophic flooding from the storm was already being blamed on global warming.

Writing for NBC News, Kristina Dahl contended, “With each new storm, we are forced to question whether this is our new, climate change-fueled reality, and to ask ourselves what we can do to minimize the toll from supercharged storms.”

The theory is that tropical cyclones have slowed down in their speed by about 10 percent over the past 70 years due to a retreat of the jet stream farther north, depriving storms of steering currents and making them stall and keep raining in one location. This is what happened with Hurricane Harvey in Houston last year.

But like most claims regarding global warming, the real effect is small, probably temporary, and most likely due to natural weather patterns …

Beyond Milankovitch

by Donald Rapp, September 8, 218 in Climate Etc.

On the terminations of Ice Ages.

Terminations occur on solar up-lobes

There is no doubt that there is merit in the widely accepted Milankovitch theory that Ice Ages and their terminations are controlled by solar input to the NH in mid-summer. It is also clear that relying on the solar input to the NH alone, does not adequately account for the occurrence of terminations of Ice Ages. The variation of solar input to high latitudes is modulated by precession, which produces continual up-lobes and down-lobes in solar input with a ~ 22,000-year period. While every termination is accompanied by the 5,500-year rising portion of an up-lobe in the solar input to high latitudes, many strong up-lobes do not produce a termination….

End of the Little Ice Age in the Alps forced by industrial black carbon

by Thomas H. Painter et al., September 17, 2018 in PNAS

The end of the Little Ice Age in the European Alps has long been a paradox to glaciology and climatology. Glaciers in the Alps began to retreat abruptly in the mid-19th century, but reconstructions of temperature and precipitation indicate that glaciers should have instead advanced into the 20th century. We observe that industrial black carbon in snow began to increase markedly in the mid-19th century and show with simulations that the associated increases in absorbed sunlight by black carbon in snow and snowmelt were of sufficient magnitude to cause this scale of glacier retreat. This hypothesis offers a physically based explanation for the glacier retreat that maintains consistency with the temperature and precipitation reconstructions.

Heat Analysis of NOAA Data Suggests the US Is Not Seeing Increased Warming

by Leland Park, September 13, 2018 in WUWT

Given the impending global warming crisis declared by scientists, it should be easy to unambiguously demonstrate the crisis from the instrumental record. Unfortunately, when looking at the  high temperature record for the US, it does not show any warming.

Figure 1 illustrates the incremental changes in surface air temperatures based on year to year differences in station average Tmax. The data is from all active stations in the US Historical Climatology Network (USHCN) from 1895 to 2014.

The classic heat equation defines changes in heat content as being proportional to changes in temperature (ΔQ = ƒ{ΔT} ).

Thus, Figure 1 amounts to a depiction of incremental changes in heat content, without scaling in energy units. The overall net temperature change is 0, which means the net change in heat content is also zero (ΔQ = ƒ{ΔT} = ƒ{0} = 0).

Figure 1 Year to Year Heat Changes (ΔT) for the USHCN