NEW STUDY CONFIRMS: THE WARMING ‘PAUSE’ IS REAL AND REVEALING

by Dr David Whitehouse, GWPF Science Editor, May 4, 2017


A new paper has been published in the Analysis section of Nature called Reconciling controversies about the ‘global warming hiatus.’ It confirms that the ‘hiatus’ or ‘pause’ is real. It is also rather revealing.

It attempts to explain the ‘Pause’ by looking into what is known about climate variability. They say that four years after the release of the IPCC AR5 report, which contained much about the ‘hiatus’ it is time to see what can be learned.

One could be a little sarcastic in saying why would Nature devote seven of its desirable pages to an event that some vehemently say never existed and maintain its existence has been disproved long ago. Now, however, as the El Nino spike of the past few years levels off, analysing the ‘pause’ seems to be coming back into fashion.

Onset and ending of the late Palaeozoic ice age triggered by tectonically paced rock weathering

by Yves Goddéris et al., April 10, 2017, Nature Geoscience


The onset of the late Palaeozoic ice age about 340 million years ago has been attributed to a decrease in atmospheric CO2 concentrations associated with expansion of land plants, as plants both enhance silicate rock weathering—which consumes CO2—and increase the storage of organic carbon on land. However, plant expansion and carbon uptake substantially predate glaciation

Rise of Earth’s atmospheric oxygen controlled by efficient subduction of organic carbon

by M. Duncan and R. Dasgupta, April 25, 2017, Nature Geoscience


We suggest that immobilization of organic carbon in subduction zones and deep sequestration in the mantle facilitated the rise (~103–5 fold) and maintenance of atmospheric oxygen since the Palaeoproterozoic and is causally linked to the Great Oxidation Event. Our modelling shows that episodic recycling of organic carbon before the Great Oxidation Event may also explain occasional whiffs of atmospheric oxygen observed in the Archaean.

China’s coal-fired power generation surprises naysayers

by Michael Cooper, May 2, 2017


Anyone with doubts about China’s demand for energy including for thermal coal needed to sustain its gigantic economy should cast their eyes over the latest statistics for power generation from Beijing’s National Statistics Bureau.

These data are a treasure trove in terms of revealing trends in China’s energy production and appetite for thermal coal sourced from both inside China and from imports shipped from countries including, Australia, Indonesia and Russia.

Antarctic Peninsula ice more stable than thought

by University of Leeds, May 2, 2017

in ScienceDaily


An international team of researchers, led by the UK Centre for Polar Observation and Modelling at the University of Leeds, are the first to map the change in ice speed. The team collated measurements recorded by five different satellites to track changes in the speed of more than 30 glaciers since 1992.

Glacier flow at the southern Antarctic Peninsula has increased since the 1990s, but a new study has found the change to be only a third of what was recently reported.

Future Global Mineral Resources

by Nicholas T. Arndt et al., April 2017, Geochemical Perspectives


Some scientists and journalists, and many members of the general public, have been led to believe that the world is rapidly running out of the metals on which our modern society is based. Advocates of the peak metal concept have predicted for many decades that increasing consumption will soon lead to exhaustion of mineral resources. Yet, despite ever-increasing production and consumption, supplies of minerals have continued to meet the needs of industry and society, and lifetimes of reserves remain similar to what they were 30-40 years ago.

Full text (171 pages) pdf, here

Thoughts on the Public Discourse over Climate Change

by MIT Prof. Richard Lindzen, April 25, 2017

Richard Lindzen is the Alfred P. Sloan Professor of Atmospheric Sciences, Emeritus at Massachusetts Institute of Technology.


For over 30 years, I have been giving talks on the science of climate change. When, however, I speak to a non-expert audience, and attempt to explain such matters as climate sensitivity, the relation of global mean temperature anomaly to extreme weather, that warming has decreased profoundly for the past 18 years, etc., it is obvious that the audience’s eyes are glazing over.


 

Pétrole : des découvertes « conventionnelles » au plus bas qui inquiètent l’AIE

by Connaissance des Energies, 28 avril 2017


L’ Agence internationale de l’énergie (AIE) a fait part hier de son inquiétude sur le niveau historiquement bas des découvertes de nouvelles réserves de pétrole « conventionnel ». Le schiste américain pourra-t-il à lui seul compenser le déséquilibre résultant de la baisse des investissements sur le marché ?

2017 Accumulated Cyclone Energy

by Dr. Ryan N. Maue, May 01, 1017


Tropical cyclone accumulated cyclone energy (ACE) has exhibited strikingly large global interannual variability during the past 40-years. In the pentad since 2006, Northern Hemisphere and global tropical cyclone ACE has decreased dramatically to the lowest levels since the late 1970s. Additionally, the frequency of tropical cyclones has reached a historical low. Here evidence is presented demonstrating that considerable variability in tropical cyclone ACE is associated with the evolution of the character of observed large-scale climate mechanisms including the El Nino Southern Oscillation and Pacific Decadal Oscillation. In contrast to record quiet North Pacific tropical cyclone activity in 2010, the North Atlantic basin remained very active by contributing almost one-third of the overall calendar year global ACE.

Can the U.S. Become the Saudi Arabia of Natural Gas?

by David Middleton, April 28, 2017


The Department of Energy gave a Texas-based energy company permission Tuesday to export liquefied natural gas (LNG) to countries with which the U.S. does not have free trade agreements.

While low U.S. natural gas prices are currently a drag on production and reserve growth, they also provide an advantage to domestic gas producers.  U.S. natural gas is extremely competitive in the global market.

Mining: Bacteria with Midas touch for efficient gold processing

by University of Adelaide, April 28, 2017, in Science News


Special ‘nugget-producing’ bacteria may hold the key to more efficient processing of gold ore, mine tailings and recycled electronics, as well as aid in exploration for new deposits, University of Adelaide research has shown.

Now they have shown for the first time, just how long this biogeochemical cycle takes and they hope to make to it even faster in the future.

La géologie, une science plus que passionnante … et diverse