1 020
Definition: Measuring Carbon
Units of Carbon used. This report will use Tg C, but read-
ers will also see values for C and CO
2
, provided in a wide
range of formats. The following information may assist
in wider reading.
Name Factor Symbol
One thousand 10
3
k (Kilo)
One million 10
6
M (Mega)
One billion 10
9
G (Giga)
One trillion 10
12
T (Tera)
10
15
P (Peta)
1km
2
= 100ha
1 ton = 2,240lbs
1 (metric) ton = 1,000kg or 1x10
6
g
Blue carbon sinks capture CO
2
through photosynthesis
from the air and water and store it as carbon.
The rate of converting C to CO
2
is 44/12; i.e. 1 aton of C
is equivalent to 3.67t CO
2
Figure 1: Carbon Cycle. Oceans are crucial in the global
carbon cycle. It was here where life first evolved; they are
the source of our wealth and development. The living
150
oceans capture over half of all the Green carbon – the car-
bon bound by living organisms through photosynthesis.
13
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