Usbek, 13 avril 2017
L’acidification n’est pas une simple réponse statique à l’augmentation de la concentration de CO2 dans l’atmosphère : c’est la résultante de processus biologiques et physico-chimiques qui entraînent une répartition inégale du carbone sur la verticale de l’océan. D’autre part la vie océanique a survécu à des niveaux beaucoup plus élevés de CO2 depuis des millions d’années dans le passé.
by Eghbert Elvan Ampou et al., 2017
The clear link between mortality and sea level fall also calls for a refinement of the hierarchy of El Niño impacts and their consequences on coral reefs.
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
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)
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!
by S.H.J. Fuchs et al., April 2017, Precambrian Research
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“
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.
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.
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.
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
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.
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
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).
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.
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.
by Steve McIntyre, April 2017, Climate Audit
A great synthesis very useful and impressive, well argued. From 1998 until today.
by Bjorn Lomborg, April 2017
The climate impact of all Paris INDC promises is minuscule: if we measure the impact of every nation fulfilling every promise by 2030, the total temperature reduction will be 0.048°C (0.086°F) by 2100.
Even if we assume that these promises would be extended for another 70 years, there is still little impact: if every nation fulfills every promise by 2030, and continues to fulfill these promises faithfully until the end of the century, and there is no ‘CO₂ leakage’ to non-committed nations, the entirety of the Paris promises will reduce temperature rises by just 0.17°C (0.306°F) by 2100.
by P. Gosselin, April 12, 2017
Critical German climate site wobleibtdieererwaermung.de (WBDE) reports that the earth’s surface is cooling, and presents the latest chart from NCEP. As of April 11, the measured global values continue to decline (black curve) as do the computed values for April 18.
The time-delayed post El Niño cooling is now showing up in the UAH and RSS satellite data.
by Christopher Hedemann et al., March 17, 2017, Nature
During the first decade of the twenty-first century, the Earth’s surface warmed more slowly than climate models simulated1. This surface-warming hiatus is attributed by some studies to model errors in external forcing2, 3, 4, while others point to heat rearrangements in the ocean5, 6, 7, 8, 9, 10 caused by internal variability, the timing of which cannot be predicted by the models1. However, observational analyses disagree about which ocean region is responsible11, 12, 13, 14, 15, 16
See also Anthony Watts, April 17, 2017
by B.P. Heard et al., 2017
An effective response to climate change demands rapid replacement of fossil carbon energy sources. This must occur concurrently with an ongoing rise in total global energy consumption. While many modelled scenarios have been published claiming to show that a 100% renewable electricity system is achievable, there is no empirical or historical evidence that demonstrates that such systems are in fact feasible. Of the studies published to date, 24 have forecast regional, national or global energy requirements at sufficient detail to be considered potentially credible. We critically review these studies using four novel feasibility criteria for reliable electricity systems needed to meet electricity demand this century
by M. Oliva et al., 2017
In light of all the above, the evidence is clearly mounting against those who point to warming on the Antarctic Peninsula as proof of CO2-induced global warming. For in the most incredible manner, warming trends that were once among the highest recorded on earth have slowed and even reversed to show cooling.
in Science of the Total Environment 580: 210-223, 2017 , Recent regional climate cooling on the Antarctic Peninsula and associated impacts on the cryosphere.
by J.P. Bardinet et al., 12 avril 2017
Pour répondre à quelques idées reçues sur l’énergie, à l’heure où cette question est primordiale aux yeux du monde.
Egalement, lien sur Mediapart
By Kenneth Richard , April 2017
According to a new paper, the Bølling Warming event 14,700 years ago raised the surface temperature for the entire Northern Hemisphere by 4 to 5°C within a few decades. This is a hemispheric warming rate of approximately 2.0°C per decade, which is 40 times faster than the 0.05 °C per decade global warming rate since 1850 (and 1998).
by Hourdin et al., March 2017,
Bulletin of the American Meteorological Society
We also discuss the challenges and opportunities in applying so-called objective methods in climate model tuning. We discuss how tuning methodologies may affect fundamental results of climate models, such as climate sensitivity. The article concludes with a series of recommendations to make the process of climate model tuning more transparent.