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Computer sims: In climatic tug of war, carbon released from thawing permafrost wins handily
Lawrence Berkeley National Laboratory via ScienceDaily
There will be a lot more carbon released from thawing permafrost than the amount taken in by more Arctic vegetation, according to new computer simulations. The findings are from an Earth system model that is the first to represent permafrost processes as well as the dynamics of carbon and nitrogen in the soil. Simulations using the model showed that by the year 2300, if climate change continues unchecked, the net loss of carbon to the atmosphere from Arctic permafrost would range from between 21 petagrams and 164 petagrams. That's equivalent to between two years and 16 years of human-induced CO2 emissions.
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SOCIETY NEWS


Goldschmidt2015 Abstract and Grant Application deadline: April 2
Goldschmidt2015
An outstanding science program spanning 25 science themes and containing 171 specific sessions has been put together for the 25th Goldschmidt Conference. We invite you to submit an abstract before April 2.

Grants for delegates from low GDP countries and students are available. Applications should be submitted before April 2 and can take the form of waived registration to the conference.

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PRODUCT SHOWCASE
  Analab Corrosion Resistant Laboratory Appliances

Analab manufacture corrosion resistant laboratory appliances such as acid vapour cleaning stations, hotplates, and sample preparation devices. Our devices can be used with a wide range of acids and bases (HF to NH4OH). We are represented in North America by Isomass Scientific.

Please visit us at Goldschmidt Aug 16 – 21/15 in Prague.
 


Goldschmidt2015: Plenaries
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We are pleased to announce the Goldschmidt2015 Plenaries. Our guest speakers include Peter Sale (University of Windsor), Janne Blichert-Toft (Ecole Normale Supérieure de Lyon), Barbara Sherwood Lollar (University of Toronto), Andrew Revkin (Pace University) and Gast Lecturer Ann Pearson (Harvard University).

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Missed an issue of Geochemical News? Click here to visit Geochemical News archive page.


  Harry Hess Postdoctoral Research Associate in Geosciences

The Department of Geosciences at Princeton University is accepting applications for a Postdoctoral Research Associate
 


New in GCA (v.153, 15 March 2015)
GS
Dissolved total hydrolyzable enantiomeric amino acids in precipitation: Implications on bacterial contributions to atmospheric organic matter

Alteration, adsorption and nucleation processes on clay–water interfaces: Mechanisms for the retention of uranium by altered clay surfaces on the nanometer scale

Petroleum alteration by thermochemical sulfate reduction – A comprehensive molecular study of aromatic hydrocarbons and polar compounds

Equilibrium isotopic fractionation and isotopic exchange kinetics between Cr(III) and Cr(VI)

Correlated cosmogenic W and Os isotopic variations in Carbo and implications for Hf–W chronology

Drivers of carbon isotopic fractionation in a coral reef lagoon: Predominance of demand over supply

The helium flux from the continents and ubiquity of low-3He/4He recycled crust and lithosphere

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GEOCHEMISTRY IN THE NEWS


New Mercury surface composition maps illuminate the planet's history
Carnegie Institution via ScienceDaily
Scientists have created global-scale maps of Mercury's surface chemistry that reveal previously unrecognized geochemical terranes — large regions that have compositions distinct from their surroundings. The presence of these large terranes has important implications for the history of the planet
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New transitory form of silica observed
Carnegie Institute
A Carnegie-led team was able to discover five new forms of silica under extreme pressures at room temperature. Their findings are published by Nature Communications. Silicon dioxide, commonly called silica, is one of the most-abundant natural compounds and a major component of the Earth’s crust and mantle. It is well-known even to non-scientists in its quartz crystalline form, which is a major component of sand in many places. It is used in the manufacture of microchips, cement, glass, and even some toothpaste.
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TRENDING ARTICLES
Missed last week's issue? See which articles your colleagues read most.

    Same forces as today caused climate changes 1.4 billion years ago (University of Southern Denmark)
Violent collisions during Earth's formation led to metal rains (Science Alert)
No limit to life in sediment of ocean's deadest region (University of Rhode Island via ScienceDaily)

Don't be left behind. Click here to see what else you missed.


 

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