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‘Computer modelling has failed climate science’

Climate Depot - Sun, 10/19/2014 - 16:21

Paper: ‘Will Obama Only Fight Carbon-Neutral Wars?’

Climate Depot - Sun, 10/19/2014 - 10:01

Claim: ‘Immediate Risk to National Security Posed by Global Warming’

Climate Depot - Sun, 10/19/2014 - 09:58

Obama’s Ebola czar Ron Klain thinks ‘global warming’ causes increased tornadoes and hurricanes

Climate Depot - Sun, 10/19/2014 - 09:12

‘Will Climate Change Denial Become a Political Liability? U.S. Treaty Envoy Thinks So’

Climate Depot - Sun, 10/19/2014 - 08:56

White House Ebola Czar Was ‘Key Player’ In Solyndra Debacle

Climate Depot - Sun, 10/19/2014 - 08:06

Shooting Santa to Save the World: Warmist Philippe Squarzoni’s book ‘imagines how virtuous it would be go berserk with an assault rifle in a shopping mall. And yes, he’s not not joking’

Climate Depot - Sun, 10/19/2014 - 06:57
https://quadrant.org.au/opinion/tony-thomas/2014/10/shooting-santa-save-world/ A top scientist of the Intergovernmental Panel on Climate Change, Dr Jean Jouzel, is lauding a comic publication which has the heroine gunning down three Santa Clauses in a supermarket with a military assault rifle. The realistically-drawn massacre in Climate Changed by Philippe Squarzoni (Abrams, New York 2014) is meant to symbolise the need [...]

Arctic Gaining Two Manhattans Of Sea Ice Every Minute

Climate Depot - Sun, 10/19/2014 - 06:38
Arctic Gaining Two Manhattans Of Sea Ice Every Minute http://stevengoddard.wordpress.com/2014/10/19/arctic-gaining-two-manhattans-of-sea-ice-every-minute Over the past three days, the overheated Arctic has been gaining sea ice at a rate of one Manhattan area every 30 seconds. Green below shows the three day gain in ice. – gReader Pro

World Disasters Report for 2013 – lowest number of catastrophies and deaths in 10 years

Climate Depot - Sun, 10/19/2014 - 06:37
World Disasters Report for 2013 – lowest number of catastrophies and deaths in 10 years http://wattsupwiththat.com/2014/10/18/world-disasters-report-for-2013-lowest-number-of-catastrophies-and-deaths-in-10-years/ Alexej Buergin writes in WUWT Tips and Notes about a report from the International Federation of Red Cross and Red Crescent Societies (IFRC) that puts climate alarmism’s claims of increased natural disasters in perspective: The “World Disasters Report 2014″ [...]

Claim: Cheap energy stimulates the economy too much – Natural Gas will not reduce CO2

Climate Depot - Sun, 10/19/2014 - 06:36
Claim: Cheap energy stimulates the economy too much – Natural Gas will not reduce CO2 http://wattsupwiththat.com/2014/10/18/claim-cheap-energy-stimulates-the-economy-too-much-natural-gas-will-not-reduce-co2 Eric Worrall writes: A new study published in Nature has revealed that switching to cheap Natural Gas will not reduce CO2 significantly, because all that cheap energy will stimulate the economy so much that we will all use more [...]

Plateau uplift in western Canada caused by lithospheric delamination along a craton edge

Nature Geoscience Advanced Online - Sat, 10/18/2014 - 23:00

Nature Geoscience. doi:10.1038/ngeo2270

Authors: Xuewei Bao, David W. Eaton & Bernard Guest

Continental plateaux, such as the Tibetan Plateau in Asia and the Altiplano–Puna Plateau in South America, are thought to form partly because upwelling, hot asthenospheric mantle replaces some of the denser, lower lithosphere, making the region more buoyant. The spatial and temporal scales of this process are debated, with proposed mechanisms ranging from delamination of fragments to that of the entire lithosphere. The Canadian Cordillera is an exhumed ancient plateau that abuts the North American Craton. The region experienced rapid uplift during the mid-to-late Eocene, followed by voluminous magmatism, a transition from a compressional to extensional tectonic regime and removal of mafic lower crust. Here we use Rayleigh-wave tomographic and thermochronological data to show that these features can be explained by delamination of the entire lithosphere beneath the Canadian Cordillera. We show that the transition from the North American Craton to the plateau is marked by an abrupt reduction in lithospheric thickness by more than 150 km and that asthenosphere directly underlies the crust beneath the plateau region. We identify a 250-km-wide seismic anomaly about 150–250 km beneath the plateau that we interpret as a block of intact, delaminated lithosphere. We suggest that mantle material upwelling along the sharp craton edge triggered large-scale delamination of the lithosphere about 55 million years ago, and caused the plateau to uplift.

A multi-sill magma plumbing system beneath the axis of the East Pacific Rise

Nature Geoscience Advanced Online - Sat, 10/18/2014 - 23:00

Nature Geoscience. doi:10.1038/ngeo2272

Authors: Milena Marjanović, Suzanne M. Carbotte, Helene Carton, Mladen R. Nedimović, John C. Mutter & Juan Pablo Canales

Upper oceanic crust at fast- to intermediate-spreading mid-ocean ridges is thought to form from the intrusion and eruption of magma accumulated within a mid-crustal reservoir present beneath the ridge axis. However, the mechanisms for formation of the lower crust are debated. Observations from pieces of ancient oceanic crust exposed on land — ophiolites — imply that multiple small magma lenses exist throughout the lower crust at mid-ocean ridges and help form the crust, yet seismic data have imaged only a single lens beneath the innermost axial zones of various mid-ocean ridges. Here we use high-fidelity seismic data to image the crust beneath the East Pacific Rise. We identify a series of reflections below the axial magma lens that we interpret as magma lenses in the upper part of the lower crust. These reflections are present between 9° 20′ and 9° 57′ N and are located up to 1.5 km below the axial magma lens. From the geometry and amplitude of the reflections in a zone beneath a recent volcanic eruption, we infer that magma drained from a lower lens helped replenish the axial magma lens above and, perhaps, contributed to the eruption. Our data indicate that a multi-level complex of magma lenses is present beneath the East Pacific Rise and probably contributes to the formation of both the upper and lower crust.

Nitrogen speciation in upper mantle fluids and the origin of Earth's nitrogen-rich atmosphere

Nature Geoscience Advanced Online - Sat, 10/18/2014 - 23:00

Nature Geoscience. doi:10.1038/ngeo2271

Authors: Sami Mikhail & Dimitri A. Sverjensky

Volatile elements stored in the mantles of terrestrial planets escape through volcanic degassing, and thereby influence planetary atmospheric evolution and habitability. Compared with the atmospheres of Venus and Mars, Earth's atmosphere is nitrogen-rich relative to primordial noble gas concentrations. The compatibility of volatile elements in mantle minerals versus melts and fluids controls how readily these elements are degassed. However, the speciation of nitrogen in mantle fluids is not well constrained. Here we present thermodynamic calculations that establish the speciation of nitrogen in aqueous fluids under upper mantle conditions. We find that, under the relatively oxidized conditions of Earth's mantle wedges at convergent plate margins, nitrogen is expected to exist predominantly as N2 in fluids and, therefore, be degassed easily. In contrast, under more reducing conditions elsewhere in the Earth's upper mantle and in the mantles of Venus and Mars, nitrogen is expected predominantly in the form of ammonium (NH4+) in aqueous fluids. Ammonium is moderately compatible in upper mantle minerals and unconducive to nitrogen degassing. We conclude that Earth's oxidized mantle wedge conditions—a result of subduction and hence plate tectonics—favour the development of a nitrogen-enriched atmosphere, relative to the primordial noble gases, whereas the atmospheres of Venus and Mars have less nitrogen because they lack plate tectonics.

Paper: Winter 2014 set to be ‘coldest for century’ – Britain faces ARCTIC FREEZE in just weeks

Climate Depot - Sat, 10/18/2014 - 20:32

Warmist John Cook Says Record Antarctic Ice Is Due To Warmer Southern Ocean – But it ‘has been getting considerable colder since 1981, and particularly in the last 8 years’

Climate Depot - Sat, 10/18/2014 - 07:39
John Cook Says Record Antarctic Ice Is Due To Warmer Southern Ocean http://notalotofpeopleknowthat.wordpress.com/2014/10/18/john-cook-says-record-antarctic-ice-is-due-to-warmer-southern-ocean By Paul Homewood According to John Cook, Antarctic sea ice has been expanding because the Southern Ocean is getting warmer. He also claims that anyone thinking more ice is due to colder conditions is “ignorant”. He forgets that some of us know [...]

Warmist: ‘How to get Republicans to stop using the ‘I’m not a scientist’ dodge’

Climate Depot - Sat, 10/18/2014 - 07:35
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