The Human Component of the Global Carbon Cycle

Global Greenhouse Gas Information System Workshop15-16 October, 2008

California Institute of TechnologyPasadena, California, USA

Gregg Marland Environmental Sciences Division Oak Ridge National Laboratory

and

Tom Boden Oak Ridge National Laboratory, USAKhrystyna Hamal Lviv Polytechnic National University, UkraineMatthias Jonas International Institute for Applied Systems Analysis, Austria

Anthropogenic C Emissions: Fossil Fuel

Updated fromRaupach et al. 2007, PNAS; Canadell et al 2007, PNAS

1990 - 1999: 0.9% y-1

2000 - 2007: 3.5% y-1

0

1

2

3

4

5

6

7

8

9

1850 1870 1890 1910 1930 1950 1970 1990 2010

Fo

ssil

Fu

el E

mis

sio

n (

GtC

/y) Emissions

280

300

320

340

360

380

400

1850 1870 1890 1910 1930 1950 1970 1990 2010

1850 1870 1890 1910 1930 1950 1970 1990 2010

2007 Fossil Fuel: 8.5 Pg C[Total Anthrop.Emis.:8.5+1.5 = 10.0 Pg]

atmospheric CO2

ocean

land

fossil fuel emissions

deforestation

7.6

1.5

4.1

2.22.8

2000-2006

CO2 f

lux

(Pg

C y-1

)Si

nkSo

urce

Time (y)

Perturbation of Global Carbon Budget (1850-2006)

Le Quéré, unpublished; Canadell et al. 2007, PNAS

CO2 Emissions from the United States

                                                                                                                                                                 

     

2004

0%

20%

40%

60%

80%

100%

Cumul Flux Growth Pop

D3D2IndiaChinaFSUD1JapanEUUSA

Cumulative fraction of total fossil-fuel emissions - 2005

number of country cumulativecountries fraction

1 USA .2062 China .4033 Russia .4594 India .5095 Japan .5526 Germany .5807 Canada .6018 UK .6219 Iran .63810 Mexico .65520 Ukraine .79350 Belarus .941100 Moldova .992211 1.000

Sources of US anthropogenic CO2 emissions - 2006

• Fossil fuel combustion 1537.5 Tg C• Non-energy use of fossil fuels 37.6• Iron and steel manufacture 13.4• Cement production 12.5• Gas flaring/venting/leakage 7.8• Other industrial processes 22.9

• Total 1631.7

From US EPA, 2008