Skip to main content
. 2021 Jan 29;28(22):27712–27730. doi: 10.1007/s11356-020-12178-w

Table 5.

Definition of symbols used in equations

Symbol Definition Dimension Used in equation
Subscripts
i Country subscript 41 countries: see Table 3
s Sector subscript 35 sectors: see Table 4
t Time subscript 15 years: 1995–2009
Vectors and matrices
T Territorial emissions
Tis … in sector s of country i 1 × 1 (1)
Ti … in country i 1 × 1 (3)
e Emission intensity of output
eis … in sector s of country i 1 × 1
ei … in all sectors of country i 35 × 1 (1)
x Output (3)
xis … in sector s of country i 1 × 1
xi … in all sectors of country i 35 × 1
ε Emission intensity of value added (1)
εis … in sector s of country i 1 × 1 (3)
z Value added
zis … in sector s of country i 1 × 1
C Consumption-based emissions (1), (5)*
Cis … in sector s of country i 1 × 1
Ci … in country i 1 × 1
φ Emission intensity of final demand (1)
φis … in sector s of country i 1 × 1
φ¯ … in average over all sectors and all countries 1 × 1
φi … in all sectors of country i 35 × 1 (2)
φ¯s … in average per sector over all countries 35 × 1 (3)
y Final demand
yis … in sector s of country i 1 × 1
yi … in all sectors of country i 35 × 1 (2), (6)*
NCO2XP Net CO2 exports (4), (9)*, (10)*, (11)*, (12)*
NCO2XPi … from country i 1 × 1 (3), (4), (7)*, (8)*
A Input-output coefficients
Ai … in country i 35 × 35 (4), (7)*, (8)*, (9)*, (10)*, (11)*, (12)*
XP Exports (of goods and services)
XPi … from all sectors of country i 35 × 1
XPij … from all sectors of country i to country j 35 × 1 (2)
MP Imports (of goods and services) (3)
MPi … in all sectors of country i 35 × 1
Auxiliary matrices
I Identity matrix 35 × 35 (3)
u Vector of ones 35 × 1 (4), (9), (10), (11), (12)

Note: Some elements that appear in the equations are time specific as indicated by a t subscript. These elements are not explicitly listed in this table, as they are equivalent to their counterpart without time dimension. * denotes the equations in which the elements are time specific