Le mix énergétique mondial de 1990 à 2035

by planete energies, 03 février 2016


L’ Agence Internationale de l’Énergie (AIE) a élaboré plusieurs scénarios de l’évolution prévisible du mix énergétique d’ici 2035. Le scénario moyen (« New policies scenario ») met en évidence l’augmentation de la demande en énergie primaire, qui passe de 13 000 Mtep en 2011 à 17 400 en 2035. La part des énergies fossiles (pétrole, gaz, charbon) restera largement dominante : elle passerait de 81 % en 2011 à 76 % en 2035. Les énergies renouvelables (y compris hydraulique et biomasse) seront en croissance : de 13 % en 2011 à 18 % en 2035

House Science Committee Hearing

by Judith Curry, March 29, 2017, Professor, School of Earth and Atmospheric Sciences Georgia Institute of Technology Atlanta


Prior to 2010, I felt that supporting the IPCC consensus on human-caused climate change was the responsible thing to do. That all changed for me in November 2009, following the leaked Climategate emails, that illustrated the sausage making and even bullying that went into building the consensus.. (also, see .pdf)

La route solaire : une idée lumineuse ou une gabegie sans avenir ?

by Olivier Appert, Président du Conseil Français de l’Energie, Avril 2017  in Connaissance des Energies


Il faut se rappeler qu’une innovation est une invention qui a trouvé son marché. Il est vrai que la technologie peut tout ou presque à condition de ne pas aller à l’encontre des lois scientifiques. Mais baser le déploiement d’une technologie sur des subventions publiques durables n’est assurément pas durable!

The formation of gold deposits in South Africa

by S.H.J. Fuchs et al., April 2017, Precambrian Research


German-Canadian research team discovers new ore-forming process in ancient marine sedimentary basin
20 April 2017/Kiel. The Witwatersrand basin in South Africa hosts the largest known gold repository on Earth – but how was it formed? Scientists of the GEOMAR Helmholtz Centre of Ocean Research Kiel and Canadian research institutes were able to figure out how parts of the Earth’s largest gold deposits formed about three billion years ago. Crude oil and hot hydrothermal fluids played a major role. This study has been currently published in the journal “Precambrian Research“

BP oil spill did $17.2 billion in damage to natural resources, scientists find

by Virginia Tech, April 20, 2017 in ScienceDaily


The 2010 BP Deepwater Horizon oil spill did $17.2 billion in damage to the natural resources in the Gulf of Mexico, a team of scientists recently found after a six-year study of the impact of the largest oil spill in US history.

This is the first comprehensive appraisal of the financial value of the natural resources damaged by the 134-million-gallon spill.

Politics Disguised as Science: When to Doubt a Scientific ‘Consensus’

by Jay Richards, April 19, 2017


Anyone who has studied the history of science knows that scientists are not immune to the non-rational dynamics of the herd.

This week’s March for Science is odd. Marches are usually held to defend something that’s in peril. Does anyone really think big science is in danger? The mere fact that the March was scheduled for Earth Day betrays what the event is really about: politics.

Slingo Speaks: ‘…no extreme weather or climate event can be attributed solely to climate change”

by By Julio Slingo,  published in the Financial Times, 13 April 2017, Julia Slingo is the former chief scientist of the Met Office,

in WUWT, Anthony Watts


Last December, I retired after nearly eight years as Met Office chief scientist. It was a pleasure and privilege to lead one of the best environmental research organisations in the world at a time when, more than ever, we depend on skilful, comprehensive predictions of the weather, climate and the broader environment.

 

Volcanic eruptions examiner

by University of Iowa, April 19, 2017

in ScienceDaily


The University of Iowa volcanologist spent her days collecting samples from a volcano on Tanna, an island in the remote South Pacific archipelago of Vanuatu. The volcano, called Yasur, spews out flaming masses or “bombs” – some the size of a small car.

This has real health implications,” Ukstins says. “It means more than simply studying volcanoes.”

Also Grand challenges to better prepare for volcanic eruptions

Are Claimed Global Record-Temperatures Valid?

by Clyde Spencer, April 12, 2017


In summary, there are numerous data handling practices, which climatologists generally ignore, that seriously compromise the veracity of the claims of record average-temperatures, and are reflective of poor science. The statistical significance of temperature differences with 3 or even 2 significant figures to the right of the decimal point is highly questionable. One is not justified in using the approach of calculating the Standard Error of the Mean to improve precision, by removing random errors, because there is no fixed, single value that random errors cluster about. The global average is a hypothetical construct that doesn’t exist in Nature. Instead, temperatures are changing, creating variable, systematic-like errors. Real scientists are concerned about the magnitude and origin of the inevitable errors in their measurements.

Also : Perspective Needed; Time to Identify Variations in Natural Climate Data that Exceed the Claimed Human CO2 Warming Effect

Five reasons blog posts are of higher scientific quality than journal articles

by Daniel Lakens, April 14, 2017


The Dutch toilet cleaner ‘WC-EEND’ (literally: ‘Toilet Duck’) aired a famous commercial in 1989 that had the slogan ‘We from WC-EEND advise… WC-EEND’. It is now a common saying in The Netherlands whenever someone gives an opinion that is clearly aligned with their self-interest. In this blog, I will examine the hypothesis that blogs are, on average, of higher quality than journal articles. Below, I present 5 arguments in favor of this hypothesis.  [EDIT: I’m an experimental psychologist. Mileage of what you’ll read below may vary in other disciplines].

See discussion here

Le Charbon : formation, extraction, utilisation, pays producteurs…

by Connaissance des Energies, Avril 2017

Dossier très complet


A l’origine de la révolution industrielle, le charbon demeure au XXIe siècle une énergie privilégiée dans le monde. Il permet d’assurer les besoins énergétiques de l’équivalent de presque un homme sur trois (le charbon satisfait 29% de la consommation d’énergie finale en 2012 selon l’AIE). Il est la première source d’énergie utilisée pour produire de l’électricité (environ 40% de l’électricité mondiale est produite à partir de charbon).

Megafaunal extinctions driven by too much moisture

by University of Adelaide, April 18, 2017 in ScienceDaily


Studies of bones from Ice Age megafaunal animals across Eurasia and the Americas have revealed that major increases in environmental moisture occurred just before many species suddenly became extinct around 11-15,000 years ago. The persistent moisture resulting from melting permafrost and glaciers caused widespread glacial-age grasslands to be rapidly replaced by peatlands and bogs, fragmenting populations of large herbivore grazers.

The idea of moisture-driven extinctions is really exciting because it can also explain why Africa is so different, with a much lower rate of megafaunal extinctions and many species surviving to this day, says Professor Cooper.

China Gas Output Rises to Record as Coal Production Rebounds

by Bloomberg News, April 17, 2017


China’s natural gas production surged to a record last month and coal output rebounded as economic growth accelerated power use in the world’s largest energy user.

Natural gas production in March rose 8.2 percent from the average of the first two months of the year to a record 13.6 billion cubic meters, according to data Monday from the National Bureau of Statistics. Coal output rose almost 13 percent over the same period to average 9.67 million tons a day, the highest daily level since December, according to Bloomberg calculations based on the data.

La géologie, une science plus que passionnante … et diverse