by American Chemical Society, December 5, 2018 in ScienceDaily
New Mexico contains hundreds of historic uranium mines. Although active uranium mining in the state has ceased, rates of cardiovascular and metabolic disease remain high in the population residing close to mines within the Navajo Nation. According to a new study in ACS’ journal Environmental Science & Technology Letters, inhaled uranium in dusts from the mines could be a factor.
by Imperial College London, December 4, 2018 in ScienceDaily
Volcanoes are not fed by molten magma formed in large chambers finds a new study, overturning classic ideas about volcanic eruptions.
Instead, the study suggests that volcanoes are fed by so-called ‘mush reservoirs’ — areas of mostly solid crystals with magma in the small spaces between the crystals.
Our understanding of volcanic processes, including those leading to the largest eruptions, has been based on magma being stored in liquid-filled ‘magma’ chambers — large, underground caves full of liquid magma. However, these have never been observed.
The new study, by researchers at Imperial College London and the University of Bristol and published today in Nature, suggests the fundamental assumption of a magma chamber needs a re-think.
by M. Bastach, December 4, 2018 in WUWT
The U.N.’s climate summit will emit as much carbon dioxide as more than 8,200 American homes.
It’s also equivalent to more than 11,700 cars driving for one year or 728 tankers trucks worth of gasoline.
When air travel is factored in, the summit’s emissions are likely higher, according to one expert.
by J.C. Maurin, 2 décembre 2018 in ScienceClimatEnergie
Au XVIe siècle, dans une ultime tentative pour sauver le système de Ptolémée, on se résigna enfin à admettre la rotation des planètes autour du Soleil mais on conserva le dogme de la position centrale de la Terre par rapport au Soleil. Le dernier pas vers l’héliocentrisme dut finalement être franchi, à regret. Au XXIesiècle, Le GIEC adapte discrètement son Almageste : on lit dans la version de novembre 2018 du Résumé à l’intention des décideurs dès la première page, 1er encadré de l’introduction → “L’augmentation mondiale de la concentration en dioxyde de carbone est essentiellement due à l’utilisation des combustibles fossiles et aux changements d’affectation des terres”. Fin de cette première page → « La source principale de l’augmentation de la concentration du dioxyde de carbone dans l’atmosphère depuis l’époque préindustrielle provient de l’utilisation des combustibles fossiles ». La certitude absolue, naguère affichée, d’une origine 100% anthropique dans la hausse du CO2atmosphérique disparaît donc. Un modèle mixte est désormais implicitement admis. A cinq siècles de distance, le dernier pas reste toujours difficile à franchir. Le présent article aide à trouver le chemin de Damas.
Figure 1. Rappels des observations (1/4) et corrélations (2/4)
by Kenneth Richard, December 3, 2018 in NoTricksZone
Agrobiologist and scientific researcher Dr. Albrecht Glatzle, author of over 100 scientific papers and two textbooks, has published research that shows “there is no scientific evidence, whatsoever, that domestic livestock could represent a risk for the Earth’s climate” and that the “warming potential of anthropogenic GHG [greenhouse gas] emissions has been exaggerated”.
by Monterey Bay Aquarium Research Institute, December 3, 2018 in ScienceDaily
More than two miles below the ocean’s surface, microbes, worms, fishes, and other creatures great and small thrive. They rely on the transport of dead and decaying matter from the surface (marine snow) for food at these dark depths.
Up near the sea surface, carbon dioxide from the atmosphere is incorporated in the bodies of microscopic algae and the animals that eat them. When they die, these organisms sink to the depths, carrying carbon with them.
This supply of carbon to the deep sea isn’t steady. At times, months’ to years’ worth of marine snow falls to the abyss during very short “pulse” events.
In a new study published in the Proceedings of the National Academy of Sciences (PNAS), MBARI scientists and their collaborators show that there has been an increase in pulse events off the coast of California. They also show that, although such episodes are very important to the carbon cycle, they are not well represented in global climate models.
by Bob Tisdale, December 3, 2018 in WUWT
Most of us are familiar with the World Meteorological Organization (WMO)-recommended 30-year period for “normals”, which are also used as base years against which anomalies are calculated. Most, but not all, climate-related data are referenced to 30-year periods. Presently the “climatological standard normals” period is 1981-2010. These “climatological standard normals” are updated every ten years after we pass another year ending in a zero. That is, the next period for “climatological standard normals” will be 1991-2020, so the shift to new “climatological standard normals” will take place in a few years.
But were you aware that the WMO also has another recommended 30-year period for “normals”, against which anomalies are calculated? It’s used for the “reference standard normals” or “reference normals”. The WMO-recommended period for “reference normals” is 1961-1990. And as many of you know, of the primary suppliers of global mean surface temperature data, the base years of 1961-1990 are only used by the UKMO.
by J. Farchy & H. Warren, December 2, 2018 in Bloomberg
While there’s little cobalt mining in China itself (1 percent of the world’s total output in 2017), Chinese companies have snapped up cobalt mines abroad in recent years, particularly in the Democratic Republic of Congo, the largest source of the metal.
by WUWT, December 2, 2018
More honesty and less hubris, more evidence and less dogmatism, would do a world of good
Dr. Jeffrey Foss
“What can I do to correct these crazy, super wrong errors?” Willie Soon asked plaintively in a recent e-chat. “What errors, Willie?” I asked.
“Errors in Total Solar Irradiance,” he replied. “The Intergovernmental Panel on Climate Change keeps using the wrong numbers! It’s making me feel sick to keep seeing this error. I keep telling them – but they keep ignoring their mistake.”
Astrophysicist Dr. Willie Soon really does get sick when he sees scientists veering off their mission: to discover the truth. I’ve seen his face flush with shock and shame for science when scientists cherry-pick data. It ruins his appetite – a real downer for someone who loves his food as much as Willie does.
by M.D., 3 décembre 2018 in MythesManciesMathématiques
Que savait-on en décembre 2015, que sait-on en décembre 2018 ?
Températures globales depuis 1979 selon trois sources (1979 est l’année origine des relevés par satellites).
by Cross et al., November 29, 2018 in CO2Science
Cross, E.L., Harper, E.M. and Peck, L.S. 2018. A 120-year record of resilience to environmental change in brachiopods. Global Change Biology 24: 2262-2271.
In light of all their findings, Cross et al. conclude that “these rhynchonelliform brachiopods have therefore been unaffected in their abilities to construct and maintain their extensive skeletons by the change in ocean acidity and temperature over the last 120 years.” And this is a noteworthy conclusion, given that C. inconspicua is one of the most calcium-carbonate-dependent species globally, and is therefore presumed to be highly susceptible to ocean acidification. It would thus appear that proper incorporation of species’ adaptation and/or acclimation potentials is essential if scientists are to get predictions of the impacts of ocean acidification on marine life correct.
by Julian Wettengel, November 28, 2018 in Euractiv
Germany’s task force on planning the definite phase-out of coal-fired power production has scrapped plans to present a decision before the end of this year.
Several days after three eastern German federal states had demanded better and more detailed plans to support coal mining regions, the so-called coal commission has decided to “conclude its work on 1 February 2019”.
The task force set up a working group from its ranks to draw up further concrete proposals for coal regions and to hold talks on these with both the federal and state governments, the commission said in a press release.
by Judith Curry, November 24, 2018 in ClimateEtc.
In considering ‘worst case’ climate change impacts, we first need to assess the realistic worst case for global carbon emissions.
The recently published U.S. National Climate Assessment shows that we are currently on track for RCP8.5.
In particular, there is a fairly large number of papers arguing that assumptions about coal are incorrect: (list of papers courtesy of LK).
- The first major study questioning the actual extent of coal reserves: “The Peak in U.S. Coal Production“ by Gregson Vaux, 27 May 2004
- More evidence that reserves are overstated: “Coal Of The Future (Supply Prospects for Thermal Coal by 2030-2050)“ by Energy Edge Limited, Prepared for the Institute for Energy of the European Commission’s Joint Research Centre, February 2007
- More evidence that reserves are overstated: “Coal: Resources and Future Production“ by Energy Watch Group, March 2007 (47 pages,)
- The major study showing that coal reserves are overstated: “Coal: Research and Development to Support National Energy Policy“ by the National Academies, June 2007
- “Why do climate change scenarios return to coal?” by Justin Ritchie and Hadi Dowlatabadi in Energy, 1 December 2017.
by Larry Summers, December 1, 2018 in WUWT
Summary: Volume II of the Fourth National Climate Assessment (NCA) has dominated the news in the weeks since its release. One of the major findings that journalists headlined was the effect of climate change on the US economy. Ten percent is vivid number to grab the attention of Americans still skeptical after thirty years of dire warnings about climate change. Unfortunately it is a dubious story, as explained in these tweets by Roger Pielke Jr.
by P. Homewood, December 2, 2018 in NotaLotofPeopleKnowThat
The BBC have now stopped even trying to camouflage their bias on climate change, with this latest piece of propaganda:
Representatives from nearly 200 countries are gathering in Poland for talks on climate change – aimed at breathing new life into the Paris Agreement.
The UN has warned the 2015 Paris accord’s goal of limiting global warming to “well below 2C above pre-industrial levels” is in danger because major economies, including the US and the EU, are falling short of their pledges.
But scientists at the Intergovernmental Panel on Climate Change (IPCC) – the leading international body on global warming – last month argued the 2C Paris pledge didn’t go far enough. The global average temperature rise actually needed to be kept below 1.5C, they said.
So how warm has the world got and what can we do about it?