MISSOURI GREENHOUSE GAS EMISSIONS AND SINKS INVENTORY:

SUMMARY



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Missouri Greenhouse Gas Emissions for 1990

Million Metric Tons of Carbon Equivalent



~ carbon
equivalent

Total
Energy

Waste Agriculture Industry Land Use

Sector

The report "Inventory of Missouri's Estimated Greenhouse Gas Emissions in 1990"
provides a detailed inventory of greenhouse gas emissions and sinks for Missouri in
1990. Emissions were estimated using methods from EPA's 1995 guidance document
State Workbook: Methodologies for Estimating Greenhouse Gas Emissions. In
1990, Missouri emitted 29.3 million metric tons of carbon equivalent (MMTCE). Missouri
estimated emissions of 1.2 MMTCE from biomass fuels, and from other sources not
included in the workbook. Emissions from these sources are not included in the
reported total or in the table below.1

The principal greenhouse gas was carbon dioxide, comprising 92.1 million metric tons
(25.1 MMTCE). Other emissions included 0.5 million metric tons of methane (3.0
MMTCE), 10 thousand metric tons of nitrous oxide (0.9 MMTCE), and 1 million metric
tons of perfluorocarbons (0.3 MMTCE).

1 Note that the state of the art emission inventory method has advanced since Missouri completed
its inventory; therefore, we have made the following adjustments to Missouri's emission estimates.
First, we excluded emission estimates for sources not covered by the most recent inventory
guidance (http://www.epa.gov/ttnchie1/eiip/techrep.htntforeen). These emissions include
methane from biofuels, oxidation of carbon monoxide during fossil fuel combustion, and nitrous
oxide from soil disturbances. Second, we used updated values for global warming potentials.

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Missouri Greenhouse Gas Emissions for 1990

BY SECTOR

C02 (MMTCE)

Methane

Nitrous Oxide

HFCs, PFCs,

Total GHG





(MMTCE)

(MMTCE)

and SF6

Emissions









(MMTCE)

(MMTCE)

Energy - Residential

2.0

*

*

*

2.0

Energy - Commercial

1.1

*

*

*

1.1

Energy - Industrial

2.8

*

*

*

2.8

Energy - Transport

10.8

*

*

*

10.8

Energy - Utility

12.8

*

*

*

12.8

Energy - Exported Electricity

0.0

*

*

*

0.0

Energy - Other

*

0.2

0.3

*

0.4

Total Energy

29.6

0.2

0.3

*

30.0

Waste

0.0

0.7

0.0

*

0.7

Agriculture

0.2

2.1

0.6

*

2.9

Industry

1.0

*

0.1

0.3

1.3

Land Use

-5.7

*

*

*

-5.7

Total

25.1

3.0

0.9

0.3

29.3

All emissions are reported in million metric tons of carbon equivalent (MMTCE).

An asterisk ( * ) indicates that emissions of the gas from this sector were zero, insignificant, or not reported.

Emissions due to coal mining and extraction of natural gas and oil are included in the energy - other
figures, and emissions from biofuel combustion are excluded.

The major source of carbon dioxide emissions was fossil fuel combustion (97%), with
minor emissions from cement and lime manufacturing. Carbon dioxide sinks (i.e., an
increase in forest carbon storage) offset about 19% of the total carbon dioxide
emissions. Sources of methane emissions were domesticated animals (43%), manure
management (28%), landfills (24%), natural gas production (4%) and fossil fuel
combustion (1%). Nitrous oxide emissions were primarily attributable to fertilizer use
(61%), fossil fuel combustion (28%), and nitric acid production (10%). Emissions of
perfluorocarbons were entirely attributable to aluminum production.

Missouri's emissions in 1990 were 5.8 MTCE per capita, compared to 1990 U.S.
emissions of 6.4 MTCE per capita.

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