Last week, I posted a global temperature reconstruction based mostly on Marcott, et al. 2013 proxies. The post can be found here. In the comments on the Wattsupwiththat post there was considerable discussion about the difference between my Northern Hemisphere mid-latitude (30°N to 60°N) and the GISP2 Richard Alley central Greenland temperature reconstruction (see here for the reference and data). See the comments by Dr. Don Easterbrook and Joachim Seifert (weltklima) here and here, as well as their earlier comments.
Petroleum, natural gas, coal, renewable energy, and nuclear electric power are primary energy sources. Electricity is a secondary energy source that is generated from primary energy sources.
Après la sortie américaine de l’Accord de Paris, il se confirme que l’Europe s’engagera, seule, dans la voie d’une électricité tout intégralement générée par de l’énergie renouvelable (soleil, vent).
This paper presents the first coherent large-scale national analysis undertaken on historical flood chronologies in Britain, providing an unparalleled network of sites (Fig. 1), permitting analysis of the spatial and temporal distribution of high-magnitude flood patterns and the potential mechanisms driving periods of increased flooding at a national scale (Britain) since AD 1750.
L’atténuation du changement climatique grâce au secteur forestier doit être mesurée par une approche scientifique objective. Elle ne doit pas permettre aux États de masquer les impacts des politiques responsables de l’augmentation nette de leurs émissions.
Dr Joanna House est maitre de conférence en sciences et politique environnementales à l’Institut Cabot, à l’Université de Bristol. Elle co-signe cette tribune avec d’autres spécialistes de l’environnement.
On June 2, 2017, in a Letter regarding US withdrawal from Paris climate agreementaddressed to the MIT community, Professor Rafael Reif, president of MIT, criticized President Trump’s decision to exit the Paris Climate Accords. In this refutation, we propose to clarify the scientific understanding of the Earth’s climate and to dispel the expensively fostered popular delusion that man-made global warming will be dangerous and that, therefore, the Paris Agreement would be beneficial.
The speed and scale at which U.S. shale production has bounced back from the slump in 2015/16 has confounded OPEC and all the other major forecasters.
The oil market is on an unsustainable course with output from U.S. shale and other non-OPEC sources 010increasing rapidly, while OPEC and its allies trim production to reduce inventories and prop up prices.
The International Energy Agency (IEA) projects non-OPEC output will increase by 1.5 million barrels per day (bpd) in 2018 (“Oil Market Report”, IEA, June 2017).
If that proves correct, non-OPEC suppliers will capture all the increase in demand next year, because the IEA predicts consumption will increase by only 1.4 million bpd.
According to our results, all non-bilaterian phyla, as well as total-group Bilateria, evolved in an ancient radiation during a geologically relatively short time span, before the onset of long-term global glaciations (“Snowball Earth”; ~720–635 Ma). Importantly, this result appears robust to alterations of a number of important analytical variables, such as models of among-lineage rate variation and sets of fossil calibrations used.
Global Warming More Moderate Than Worst-Case Models A new study based on 1,000 years of temperature records suggests global warming is not progressing as fast as it would under the most severe emissions scenarios outlined by the Intergovernmental Panel on Climate Change (IPCC).
The West Antarctic Ice Sheet, a landbound mass of ice larger than Mexico, experienced substantial surface melt through the austral summer of 2015-2016 during one of the largest El Niño events of the past 50 years, according to scientists who had been conducting the first comprehensive atmospheric measurements in the region since the 1960s.
Hundreds of built and proposed hydroelectric dams may significantly harm life in and around the Amazon by trapping the flow of rich nutrients and modifying the climate from Central America to the Gulf of Mexico. These findings, published in Nature, emerge from a multidisciplinary, international collaboration of researchers from 10 universities, led by scientists at The University of Texas at Austin.
To meet energy needs, economic developers in South America have proposed 428 hydroelectric dams, with 140 currently built or under construction, in the Amazon basin — the largest and most complex network of river channels in the world, which sustains the highest biodiversity on Earth.
“It is absolutely critical to recognize that I am NOT claiming that humans haven’t done great damage to marine and terrestrial [ecosystems], nor that many extinctions have not occurred and more will certainly occur in the near future. But I do think that as scientistswe have a responsibility to be accurate about such comparisons.”
Many popular science articles take this as a given, and indeed, there’s something emotionally satisfying about the idea that humans’ hubris and shortsightedness are so profound that we’re bringing down the whole planet with us.
Dès 1742, dans la région de Pechelbronn en Alsace, des tarières (outils permettant de percer le sol) étaient destinées à localiser les filons de sable bitumineux. L’huile était séparée du sable par lessivage à l’eau bouillante, puis distillée pour obtenir des produits pharmaceutiques, de l’huile pour lampe, de la graisse et de la poix.
C’est en 1778 que Peter Pond a localisé les premières sources de bitume dans la région d’Athabasca, mais c’est Robert Fitzsimmons, un entrepreneur, qui est le premier à avoir séparé le bitume du sable et qui l’a utilisé pour recouvrir les routes et les toitures. Si les Amérindiens ont depuis des siècles utilisé ce bitume pour calfater des embarcations, les sables bitumineux n’ont vraiment attiré l’attention de l’industrie pétrolière qu’après les chocs pétroliers.
As the reconstruction of the climate’s development in the past by proxy data shows, there’s a series of temperature cycles that appear to be unknown, or ignored by many climate scientists. Among these are the larger climate cycles of 150 million to 180 million years (see Part 1 and Part 2), but also the shorter and for us the more important following cycles:
1000 years (900-1100) Suess cycle with +/- 0.65°C
230 years (230-250) deVries cycle with +/- 0.30°C
65 years (60-65) Ocean cycles with +/- 0.25°C
This regrettably postpones the much-anticipated Hudson Bay System Study (BaySys) involving 40 scientists from five universities across Canada. Timing was key for this $17 million, four-year, University of Manitoba-led project.
The 2017 Edition of the REN21 Renewables Global Status Report reveals a global energy transition well underway, with record new additions of installed renewable energy capacity, rapidly falling costs, and the decoupling of economic growth and energy-related carbon dioxide (CO2) emissions. This year’s report continues REN21’s long-standing tradition of providing the most up-to-date data and informative infographics to detail renewable energy’s contribution to the energy transition.
Scientists at Michigan State University (MSU) show that examining the daily minutia of climate, not just temperature, but also sunshine, precipitation and soil moisture simultaneously all over a country gives a better understanding of how variable a land’s climate can be. That information is crucial when countries are setting policies aimed at growing food, protecting water supplies and the environment and stemming disease outbreaks. The findings were reported in this week’s Scientific Reports.
The electric car has dropped out of favor in the country that pioneered renewable energy.
Sales in Denmark of Electrically Chargeable Vehicles (ECV), which include plug-in hybrids, plunged 60.5 percent in the first quarter of the year, compared with the first three months of 2016, according to latest data from the European Automobile Manufacturers Association (ACEA). That contrasts with an increase of nearly 80 percent in neighboring Sweden and an average rise of 30 percent in the European Union.
The reduction in global temperature after the recent El Nino continues though not as swiftly as some predicted. The next few months will be interesting to see if it returns to levels seen before the recent El Nino took place when global annual average temperatures changed little for at least 15 years.
The best way to kill off the Climate Debate is to do what Team-Alarm has done for years — stop talking about whether it’s real, and just project forwards, detailing the collapse. For twenty years others have been saying “the debate is over”. Now the tables are turning. The debate really is over, skeptics won, and what’s left is to watch it continue to unravel. Clive James argues that it won’t collapse like a house of cards… (an extract from the new IPA book Climate Change: The Facts 2017.)
In this article, I explore the scientific literature on possible solar indirect effects on climate, and suggest a reasonable way of looking at them. This should also answer Leif Svalgaard’s question, though it seems rather unlikely that he would be unaware of any of the material cited here. Certainly just about everything in this article has already appeared on WUWT; the aim here is to present it in a single article (sorry it’s so long). I provide some links to the works of people like Jasper Kirkby, Nir Shaviv and Nigel Calder. For those who have time, those works are worth reading in their entirety.
The basic physics behind CO2 warming the oceans, and therefore the atmosphere simply don’t exist. The only defined mechanism by which CO2 can affect climate change is by “thermalizing” long-wave infrared radiation between 13 and 18-microns. In reality, there is another one, radiation, but that carries heat away from the earth and results in atmospheric cooling.
La géologie, une science plus que passionnante … et diverse