emissions does not match to any component (i.e. budget imbalance), according to
the used assessment tools.
Global CO 2 emissions increased from 2 billion tonnes of carbon dioxide in 1900
to over 36 billion tonnes 115 years later [14]. Since 1960, a positive growth trend of
global CO 2 emissions has been observed, as shown in Fig. 3, with the 2008 global
crisis meaning nothing but a year small decrease, completely offset in the following
year, mostly buy non-OECD countries. Global fossil CO 2 emissions grew at 1% per
Fig. 2 Perturbation of the global carbon cycle caused by anthropogenic activities averaged
globally for the decade 2009–2018 (GtCO 2 /yr) Credit Global Carbon Project 2019
Fig. 3 Global fossil CO 2 emissions estimated for the period 1960–2018 (2019 refers to a
projection estimate) Source Global Carbon Project (2019)
10
J. Seixas and F. Ferreira
the used assessment tools.
Global CO 2 emissions increased from 2 billion tonnes of carbon dioxide in 1900
to over 36 billion tonnes 115 years later [14]. Since 1960, a positive growth trend of
global CO 2 emissions has been observed, as shown in Fig. 3, with the 2008 global
crisis meaning nothing but a year small decrease, completely offset in the following
year, mostly buy non-OECD countries. Global fossil CO 2 emissions grew at 1% per
Fig. 2 Perturbation of the global carbon cycle caused by anthropogenic activities averaged
globally for the decade 2009–2018 (GtCO 2 /yr) Credit Global Carbon Project 2019
Fig. 3 Global fossil CO 2 emissions estimated for the period 1960–2018 (2019 refers to a
projection estimate) Source Global Carbon Project (2019)
10
J. Seixas and F. Ferreira