MASSACHUSETTS GREENHOUSE GAS EMISSIONS AND SINKS INVENTORY:
SUMMARY
Massachusetts Greenhouse Gas Emissions for 1990
Million Metric Tons of Carbon Equivalent
25.0
20.0
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Massachusetts Greenhouse Gas Emissions for 1990
BY SECTOR
co2
(MMTCE)
Methane
(MMTCE)
Nitrous Oxide
(MMTCE)
HFCs, PFCs,
and SF6
(MMTCE)
Total GHG Emissions
(MMTCE)
Energy - Residential
3.5
*
*
*
3.5
Energy - Commercial
2.4
*
*
*
2.4
Energy - Industrial
1.2
*
*
*
1.2
Energy - Transport
7.8
*
*
*
7.8
Energy - Utility
6.2
*
*
*
6.2
Energy - Exported Electricity
0.6
*
*
*
0.6
Energy - Other
*
0.0
0.5
*
0.6
Total Energy
21.8
0.0
0.5
*
22.4
Waste
0.5
1.1
*
*
1.5
Agriculture
*
0.0
0.0
*
0.0
Industry
0.0
*
*
*
0.0
Land Use
-2.3
*
*
*
-2.3
Total
20.0
1.1
0.5
*
21.7
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 total energy figures,
and emissions from biofuel combustion are excluded.
The major source of carbon dioxide emissions was fossil fuel combustion (98%).
Emissions from waste combustion (2%) and lime manufacturing and limestone use
(<1%) comprised the remainder of the carbon dioxide emissions. Carbon dioxide sinks
(i.e., an increase in forest carbon storage) offset about 10% of the total carbon dioxide
emissions. Contributors to methane emissions included landfills (91%), domesticated
animals and manure management (4%), fossil fuel combustion (3%) and wastewater
treatment (2%). The primary source of nitrous oxide emissions was fossil fuel
combustion (>99%), with minor emissions from fertilizer use (<1%).
Massachusetts's emissions in 1990 were 3.6 MTCE per capita, compared to 1990 U.S.
emissions of 6.4 MTCE per capita.
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