better to know...?

Pas d’erreurs pour l’Arctique!

by Paul Berth, 21 octobre 2018 in ScienceClimatEnergie

Comme mentionné dans un article précédent, le DMI (Danish Meteorological Institute) publie régulièrement l’évolution temporelle, mois par mois, de l’étendue de la glace de l’Arctique en millions de km2. Le dernier graphique publié (Fig. 1) nous montre l’étendue de la glace au mois de septembre entre 1979 et 2018 (c’est au mois de septembre que l’étendue de glace arctique est la plus faible, moins de 10 millions de km2). Une droite, dont la pente est négative, est tracée parmi les points : tous les 10 ans, la surface semble diminuer de 11,4%. Si l’on extrapole la droite ont peut calculer qu’il n’y aura plus de glace en Arctique dans 60 ans. Cependant, ne remarquez-vous rien d’étrange sur ce graphique?

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climate-debate

New Science: Arctic AND Antarctic Sea Ice More Extensive Today Than Nearly All Of The Last 10,000 Years

by K. Richard, October 18, 2018 in NoTricksZone

It is often claimed that modern day sea ice changes are “unprecedented”, alarming, and well outside the range of natural variability.  Yet scientists are increasingly finding that biomarker proxies used to reconstruct both Arctic and Antarctic sea ice conditions since the Early Holocene reveal that today’s sea ice changes are not only not unusual, there is more extensive Arctic and Antarctic sea ice during recent decades than there has been for nearly all of the last 10,000 years.

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climate-debate

Trump s’interroge sur les causes du changement climatique

by Tom Harris & Jay Lehr, 20 octobre 2018 in Contrepoints

Le 14 octobre dernier, durant une interview sur la chaine de télévision CBS, le président américain a exprimé à juste titre son scepticisme concernant le rôle de l’homme sur le changement climatique.

Contrairement à l’affirmation d’Al Gore daté du 12 octobre selon laquelle seuls « quelques rares marginaux » dans la communauté scientifique ne partageraient pas l’avis du GIEC, de nombreux chercheurs sont en désaccord avec les conclusions faites par l’agence internationale.

En effet, c’était un euphémisme pour le président américain de déclarer durant l’interview « qu’il y a des scientifiques qui réfutent cela », en parlant d’un lien entre la fonte de glace au Groenlandet du changement climatique anthropique.

Le 8 octobre dernier, durant sa conférence devant la Global Warming Policy Foundation (GWPF) située à Londres, le professeur Richard Lindzen a mentionné « la découverte faite conjointement par la NOAA (la National Oceanic and Atmospheric Administration) et l’Institut Météorologique Danois, à savoir que la masse de glace du Groenland a effectivement augmenté ».

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climate-debate

CNN: “Climate change endangers dozens of World Heritage sites”… Unmitigated horst schist

by David Middleton, October 19, 2018 in WUWT

Holocene Sea Level

I didn’t take the time to look up the dates of these World Heritage sites… But I’m going to guess they’re OLD.  Many of them probably date back to the Early to Mid-Holocene.  [My bad… That was a bad guess.  The Late Holocene (Meghalayan Age) begins in 4200 BP (2250 BC)]  Here’s a Holocene sea level reconstruction for the Arabian Gulf, with a recent reconstruction of global sea level since 1800 (Jevrejeva et al., 2014) and the satellite sea level trend from CU…

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better to know...?

LES EVENEMENTS CLIMATIQUES EXTREMES DU PASSE (19)

by John Moreau, 20 octobre 2018 in Belgotopia

« Le contenu de la mémoire est fonction de la vitesse de l’oubli »

Désormais, chaque inondation quelque peu catastrophique, chaque tornade, chaque anomalie météorologique est rattachée au réchauffement climatique qui parait-il nous menace, mais dont en plus l’homme serait responsable !

Pourtant, la consultation de chroniques ou récits anciens est révélatrice de précédents tout aussi apocalyptiques,  et relativise la notion même de « changements climatiques », ainsi que la définition d’un « climat stable » qui n’a jamais existé mais qu’on voudrait instaurer à tout prix.

 

AUX ENVIRONS DE 1850, FIN DU « PETIT AGE GLACIAIRE » et début d’un réchauffement du climat, surtout perceptible en hiver.

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Pour l’ensemble des épisodes :

https://belgotopia.wordpress.com/2015/02/27/sur-les-evenements-climatiques-extremes-1/

https://belgotopia.wordpress.com/2015/04/01/sur-les-evenements-climatiques-extremes-2/

https://belgotopia.wordpress.com/2015/04/15/sur-les-evenements-climatiques-extremes-3/

https://belgotopia.wordpress.com/2015/05/05/sur-les-evenements-climatiques-extremes-4/

https://belgotopia.wordpress.com/2015/06/01/sur-les-evenements-climatiques-extremes-5/

https://belgotopia.wordpress.com/2015/06/15/sur-les-evenements-climatiques-extremes-6/

https://belgotopia.wordpress.com/2015/06/24/sur-les-evenements-climatiques-extremes-7/

https://belgotopia.wordpress.com/2015/08/20/sur-les-evenements-climatiques-extremes-8/

https://belgotopia.wordpress.com/2015/09/04/les-evenements-climatiques-extremes-dans-lhistoire-9/

https://belgotopia.wordpress.com/2015/09/30/les-evenements-climatiques-extremes-du-passe-10/

https://belgotopia.wordpress.com/2015/10/28/les-evenements-climatiques-extremes-du-passe-11/

https://belgotopia.wordpress.com/2015/11/25/les-evenements-climatiques-extremes-du-passe-12/

https://belgotopia.wordpress.com/2017/03/10/les-evenements-climatiques-extremes-du-passe-13/

https://belgotopia.wordpress.com/2017/03/21/les-evenements-climatiques-extremes-du-passe-14/

https://belgotopia.wordpress.com/2017/05/23/les-evenements-climatiques-extremes-du-passe-15/

https://belgotopia.wordpress.com/2017/09/04/les-evenements-climatiques-extremes-du-passe-16/

https://belgotopia.wordpress.com/2017/09/06/les-evenements-climatiques-extremes-du-passe-17/

https://belgotopia.wordpress.com/2018/03/25/les-evenements-climatiques-extremes-du-passe-18/

https://belgotopia.com/2018/10/20/les-evenements-climatiques-extremes-du-passe-19/

 

better to know...?

Claim: Air Pollution, Not Greenhouse Gases, Is the Main Cause of Global Warming

by Anthony Watts, October 19, 2018 in WUWT

NOTE: I don’t necessarily agree with this [at all], but I thought it worth exposing – Anthony

In a recent article in the Journal of Geography, Environment and Earth Science International, Transdyne Corporation geoscientist J. Marvin Herndon makes the startling claim that climate scientists, including the UN’s Intergovernmental Panel on Climate Change (IPCC), have been chasing the wrong culprit for global warming and climate change.

From the article, “Fig. 3 is a copy of [Gottschalk’s] Fig. 2 to which has been added three relative-value proxies that represent major activities that produce particulate pollution.”

From the article, “Fig. 3 is a copy of [Gottschalk’s] Fig. 2 to which has been added three relative-value proxies that represent major activities that produce particulate pollution.”

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climate-debate

September 2018 Global Surface (Land+Ocean) and Lower Troposphere Temperature Anomaly Update

by Bob Tisdale, October 18, 2018 in WUWT

This post provides updates of the values for the three primary suppliers of global land+ocean surface temperature reconstructions—GISS through September 2018 and HADCRUT4 and NOAA NCEI (formerly NOAA NCDC) through August 2018—and of the two suppliers of satellite-based lower troposphere temperature composites (RSS and UAH) through September 2018. It also includes a few model-data comparisons.

This is simply an update, but it includes a good amount of background information for those new to the datasets. Because it is an update, there is no overview or summary for this post. There are, however, simple monthly summaries for the individual datasets. So for those familiar with the datasets, simply fast-forward to the graphs and read the summaries under the headings of “Update”.

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climate-debate

THE UN’S DOOMSDAY CLIMATE CLOCK

by GWPF, October 18, 2018 TheWallStreetJournal

In case you hadn’t heard we’re all doomed, yet the world mostly yawned. This is less complacency than creeping scientific and political realism.

The U.N. panel says the apocalypse is nigh—literally. According to its calculations, global carbon emissions must fall 45% by 2030—twice as much as its earlier forecasts—and the world must wean itself entirely off fossil fuels over three decades to prevent a climate catastrophe that will include underwater coastlines and widespread drought and disease.

These reductions are “possible within the laws of chemistry and physics,” said the report’s co-author Jim Skea, and that’s a relief. But he added: “Doing so would require unprecedented changes,” and the report said some methods “are at different stages of development and some are more conceptual than others, as they have not been tested at scale.”

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pollution-contamination

Substantial changes in air pollution across China during 2015 to 2017

by University of Leeds, October 17, 2018 in ScienceDaily

A study by the University of Leeds has examined measurements from more than 1600 locations in China and found that more than 50 per cent of the locations showed a significant decrease in concentrations of sulphur dioxide and fine particulates that make up a large portion of air pollution.

The team used datasets from 2015 to 2017 consisting of hourly assessments of concentrations of Nitrogen Dioxide (NO2), Sulphur Dioxide (SO2), Ozone (O3), and fine particles measuring less than 2.5 μm (PM2.5).

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energy and fields

Les limites des lois de la physique dans la transition énergétique

by Alain Préat, 17 octobre 2018, in ScienceClimatEnergie

Bertrand Cassoret a récemment publié un excellent ouvrage [1] sur le sujet. Cet auteur est ingénieur et docteur en génie électrique et s’est lancé sans a priori dans le dédale des ‘promesses’ des énergies vertes en tentant de préciser ce qu’il en est à partir d’une quantification rigoureuse des rendements énergétiques réels. Pourquoi ‘réels’ ? Simplement parce qu’il faut débusquer tout ce qui n’est pas mis en avant (principalement pertes énergétiques cachées) et surtout mettre à plat les ordres de grandeurs du monde de l’énergie. Sa conclusion sera sans appel « même si l’efficacité énergétique est utile et même indispensable, elle ne sera pas suffisante… il est nécessaire de modifier l’usage que l’on fait des appareils consommateurs ». Autre conclusion sans appel « mon objectif n’est pas de critiquer les énergies renouvelables, ni les nécessaires mesures d’efficacité, mais plutôt de montrer qu’elles pèsent bien peu face à l’ampleur des problèmes ».

…Figure 1 : Image du trafic aérien du 29/06/2018 par le site    FlightRadar24 (©Filght Radar14) [4]

energy and fields

Oil Production at 100 million bbl/d: “Twin peaks straining the system to the limit”? Or just another day at the office in a highly resilient industry?

by  David Middleton, October 15, 2018 in WUWT

From the International Energy Agency’s Oil Market Report (OMR):

Home » Newsroom » News » 2018 » October

OMR: Twin Peaks

12 October 2018

Both global oil demand and supply are now close to new, historically significant peaks at 100 mb/d, and neither show signs of ceasing to grow any time soon. Fifteen years ago, forecasts of peak supply were all the rage, with production from non-OPEC countries supposed to have started declining by now.

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better to know...?, climate-debate

Le catastrophisme climatique des années 60 à 80 à l’épreuve des faits

by Cédric Moro, 15 octobre 2018 in MythesMancies&Mathématiques

Les discours alarmistes sur le climat ne datent pas d’hier. Grâce à la numérisation des archives audio-visuelles et à leur mise en ligne sur internet, il est possible aujourd’hui de démentir les prévisions climato-catastrophistes assénées de manière très officielle dans la deuxième moitié du siècle dernier. Beaucoup des déformations de nos discours sur la réalité tendent à puiser leurs racines dans nos représentations mentales du monde. Nous verrons donc que ces représentations alarmistes naissent dans un contexte idéologique nouveau : mutation de l’eugénisme, collapsologisme et décroissance.

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climate-debate

IPCC achieves net zero credibility

by Barry Brill, October 14, 2018 in WUWT

The recently released IPCC SR15 reports (at A1) that global warming is likely to reach 1.5°C between 2032 and 2050 and (at B) will probably bring species extinction, weather extremes and risks to food supply, health and economic growth. If we are to avoid this, net CO2 emissions will need to decline by about 45% from 2010 levels by 2030, reaching net zero by 2050 (C1), followed by extensive removals (C5). The required energy investment alone will be $2.4 trillion per year.

Is this possible?

As at 2015, which was not materially different from 2010, more than half the planet’s total CO2 emissions (36Gt) were sourced from just three countries:

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climate-debate

Reliable? CRU, NASA, BEST, NOAA Land Temp Data Conflict By Up To 90% (0.8°C), Spawning ‘Large Uncertainty’

by K. Richard, October 8, 2018 in NoTricksZone

A new paper documents “remarkably different” land temperatures from one instrumental data set to another. In some regions there is as much as an 0.8°C conflict in recorded temperature anomalies for CRU, NASA, BEST, and NOAA. The relative temperature trend differences can reach 90% when comparing instrumental records. Consequently, the uncertainty in instrumental temperature trends — “0.097–0.305°C per decade for recent decades (i.e., 1981–2017)” —  is as large or larger than the alleged overall warming trend itself for this period.

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climate-debate

Reconstruction of Prehistoric Landfall Frequencies of Catastrophic Hurricanes in Northwestern Florida from Lake Sediment Records

by Kam-biu Liu & Miriam L. Fearn, September 2000,  in QuaternaryResearch

Sediment cores from Western Lake provide a 7000-yr record of coastal environmental changes and catastrophic hurricane landfalls along the Gulf Coast of the Florida Panhandle. Using Hurricane Opal as a modern analog, we infer that overwash sand layers occurring near the center of the lake were caused by catastrophic hurricanes of category 4 or 5 intensity. Few catastrophic hurricanes struck the Western Lake area during two quiescent periods 3400–5000 and 0–1000 14C yr B.P. The landfall probabilities increased dramatically to ca. 0.5% per yr during an “hyperactive” period from 1000–3400 14C yr B.P., especially in the first millennium A.D. The millennial-scale variability in catastrophic hurricane landfalls along the Gulf Coast is probably controlled by shifts in the position of the jet stream and the Bermuda High.

climate and geology

Study: climate was more variable during the last inter-glacial period

by Anthony Watts, October 12, 2018 in WUWT

Century-scale climate variability was enhanced when the Earth was warmer during the Last Interglacial period (129-116 thousand years ago) compared to the current interglacial (the last 11,700 years), according to a new UCL-led study.

The findings, published today in Nature Communications and funded by the Natural Environment Research Council (NERC) and the Australian Research Council (ARC), reveal that the Last Interglacial period was punctuated by a series of century-scale arid events in southern Europe and cold water-mass expansions in the North Atlantic.

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renewable energy

Failure of ‘World’s Biggest Solar Project’ in Saudi Arabia Is No Surprise

by Jason Deign, October 2, 2018 in gym

Renewables developers eyeing Saudi Arabia remain wary of the market following the news that the world’s biggest solar project has been canceled.

The $200 billion, 200-gigawatt solar plant planned by SoftBank and the Saudi Public Investment Fund had raised skepticism among developers when it was announced in March, partly because of technical concerns over how it might be integrated into the grid.

The main worry, though, was that the megaproject appeared to have been approved independently of plans for an orderly ramp-up of solar through a tender program managed by the Saudi Renewable Energy Project Development Office (REPDO).

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climate-debate

Ocean Temperatures Have Been Rising Since 19thC

by P. Homewood, October 12, 2018 in NotaLotofPeopleKnowThat

https://www.sciencedaily.com/releases/2012/04/120401135345.htm

 

The significance of course is that the warming of the oceans began long before any impact from CO2 emissions.

HH Lamb has written extensively about how sea temperatures in the Atlantic fell radically during the LIA. Is the warming trend since then merely a return to earlier conditions?

climate-debate

McIntyre: ‘a reductio ad absurdum of tree ring chronologies as useful temperature proxies’

by A. Watts, October 11, 2018 in WUWT

Steve McIntyre has a look at the “revised” PAGES2K temperature proxy dataset that includes tree rings and river sediments. He finds the usual ridiculous problems from the past, such as upside down data and river sediment accumulations that have more to do with building a dam than climate.

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See also here

climate-debate

Richard Lindzen Lecture at GWPF: ‘Global Warming for the Two Cultures’

by R. Lindzen, Ocotber2, 2018 in A. Watts, WUWT

The climate system

The following description of the climate system contains nothing that is in the least controversial, and I expect that anyone with a scientific background will readily follow the description. I will also try, despite Snow’s observations, to make the description intelligible to the non-scientist.

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Conclusion

So there you have it. An implausible conjecture backed by false evidence and repeated incessantly has become politically correct ‘knowledge,’ and is used to promote the overturn of industrial civilization. What we will be leaving our grandchildren is not a planet damaged by industrial progress, but a record of unfathomable silliness as well as a landscape degraded by rusting wind farms and decaying solar panel arrays. False claims about 97% agreement will not spare us, but the willingness of scientists to keep mum is likely to much reduce trust in and support for science. Perhaps this won’t be such a bad thing after all – certainly as concerns ‘official’ science.

There is at least one positive aspect to the present situation. None of the proposed policies will have much impact on greenhouse gases. Thus we will continue to benefit from the one thing that can be clearly attributed to elevated carbon dioxide: namely, its effective role as a plant fertilizer, and reducer of the drought vulnerability of plants. Meanwhile, the IPCC is claiming that we need to prevent another 0.5◦C of warming, although the 1◦C that has occurred so far has been accompanied by the greatest increase in human welfare in history. As we used to say in my childhood home of the Bronx: ‘Go figure’.

climate-debate

Most US newspapers failed to even mention the new IPCC climate change report

by Meteor Blades, October 11, 2018 in RedGreen&Blue

Media Matters scrutinized the top 50 U.S. newspapers between 9 AM and noon ET on Monday and found most did not mention on their website homepages the Intergovernmental Panel on Climate Change’s Sunday release of its report on the devastating impacts of a global temperature increase of 1.5-degree Celsius (2.7-degree Fahrenheit) above the temperature of the pre-industrial era.

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climate-debate

UN’s IPCC Ignores Astronomical Costs Of Cutting CO2 Versus Doing Nothing

by Bjorn Lomborg, October 10, 2018 in ClimateChangeDispatch

…

The IPCC report significantly underestimates the costs of getting to zero emissions. Fossil fuels provide cheap, efficient power, whereas green energy remains mostly uncompetitive.

Switching to more expensive, less efficient technology slows development. In poor nations that means fewer people lifted out of poverty.

In rich ones, it means the most vulnerable are hit by higher energy bills.

The IPCC says carbon emissions need to peak right now and fall rapidly to avert catastrophe.

Models actually reveal that to achieve the 2.7-degree goal the world must stop all fossil fuel use in less than four years.

Yet the International Energy Agency estimates that in 2040 fossil fuels will still meet three-quarters of world energy needs, even if the Paris agreement is fully implemented.

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climate-debate

Evolutions récentes du CO2 atmosphérique (2/3)

by JC Maurin, 4 octobre 2018 in Science,Climat,Energie

  • Pour les derniers millénaires, les proxies archives glaciaires montrent une corrélation entre rapport isotopique (« température ») et taux de CO2  subsistant dans les microbulles. Toutefois les valeurs numériques de taux de CO2 doivent être prises avec précaution: l’enregistrement comporte à minima un biais « passe bas » qui efface les extremums. Si la corrélation est bien réelle, en revanche des affirmations telles que « les taux de CO2 des derniers millénaires sont toujours inférieurs aux taux après 1958 », ou bien « une variation de 1°C entraîne une variation de 12 ppm » ne sont pas démontrées.

  • Le CO2 ne précède jamais l’augmentation de la température, et cela depuis au moins le Pléistocène (240 000 ans) où la démonstration a bien été établie (cf. Fig. 8). Le CO2 n’est donc pas le ‘bouton’ contrôlant l’évolution de la température.

  • Les concentrations anciennes de CO2 atmosphérique sont sous-estimées et les données de Vostok non seulement donnent un ‘ background’ plus faible que les données fournies par l’analyse des stomates (Fig.10,) mais ne voient pas les pics de concentrations plus élevés de CO2. Ainsi affirmer que les teneurs actuelles en CO2n’ont jamais été aussi élevées, même à une échelle géologique très restreinte (telle que Quaternaire) est trompeur.

  • Pour les dernières décennies, les mesures contemporaines montrent une corrélation entre température de surface des océans sous les tropiques et variation annuelle du taux de CO2. La variation annuelle c’est aussi la différence entre entrées et sorties. Les mesures contemporaines montrent également une corrélation entre température des océans sous les tropiques et variation annuelle du δ13C. Ces 2 corrélations sont nettes lors des forts épisodes El Niño de 1998 et 2016.

  • Nous exploiterons ces corrélations dans la troisième partie qui montrera que le modèle anthropique du GIEC n’est pas en accord  avec les mesures du δ13C  et ne peut rendre compte des évolutions récentes du CO2 .

La géologie, une science plus que passionnante … et diverse