Tracing the carbon cycle

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Tracing the carbon cycle. Fe: produit dans la dernière phase de fusion. CNO. Éléments > Fe: activation par neutrons. Éléments fissionable. Instable. Vostok – a 500 ka record of climate in an ice core. Expanded carbon cycling in the boreal, temperate and tropical forests. - PowerPoint PPT Presentation

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Clark & Aravena

Tracing Tracing thethe

carbon carbon cyclecycle

-2

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log

ab

on

da

nce

(ato

me

s / 1

06 Si)

H

He

Li

Be

B

Fe

Ca

Sc

CO

UTh

PbPt

Ni

Tc Pm

N

NeSiS

Fe:produit dans la dernière phase

de fusionÉléments > Fe:activation par

neutrons

Instable

CNO

Éléments fissionable

Clark & Aravena

Vostok – a 500 ka

record of climate inan ice core

-500

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Deu

teriu

m ‰

VS

MO

W

D T

°C

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d18 O

‰ V

SM

OW

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D T

°C

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Atm

osp

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ric

CO

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pm

v

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D T

°C

Expanded carbon cycling in the boreal, temperate and tropical forests

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Years before present

Atm

osp

he

ric

CO

2 p

pm

v

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D T

°C

CO2 from increased respiration in soils at higher T

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Temperature

CO

2 p

pm

CO2 atmosphèrique en equilibre avec

des eaux marines CO2 degassing withincreased T

0.00001

0.0001

0.001

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Li Be B C N F Na Mg Al Si P S Cl K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Rb Sr

pp

m

Croûte

Rivières

Eau marine

0.001

0.01

0.1

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Li Be B C N F Na Mg Al Si P S Cl K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Rb Sr

Facteur d'enrichissement

Temps de résidence océanique

Solanki et al., 2004, Nature 431, 1084

Anthropogenic COAnthropogenic CO22 is is increasing during a time of increasing during a time of maximum solar activity – maximum solar activity –

the highest in 10,000 the highest in 10,000 years.years.

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CO

2 p

pm

Tracing the Sulfur Cycle

Sulfate Cycle in Groundwater

34S composition of Geological Materials of Different Origin

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