I have some confusion about the amount of GHG emissions in 2010; that is published in IPCC 2014 [ Source: Climate Change 2014 – Synthesis Report (IPCC) (p.5) ] and the other illustrated in [IEA, Energy Technology Perspectives 2010 Scenarios & Strategies to 2050, ETP 2010, International Energy Agency, OECD/IEA, Paris, 2010. (p. 47)] .
As I observed, the former indicated 49 Gt in 2010 where the latter indicated around 27 Gt in 2010. I think that there is some misunderstanding so please advise me to find the right value for GHG emissions in 2010.
I attached the two figures and I can send the original documents to who may demand.
Dear Mohamed,
the IEA source you cite is from 2009 and estimates the "energy related" GHG emissions. On the other hand IPCC gives the "Total annual anthropogenic GHG emissions", which includes non energy related emissions as well.
To see the energy related GHG emissions in the IPCC report, you have to look at Chapter 5 of the AR5 Climate Change 2014: Mitigation of Climate Change Report (https://www.ipcc.ch/report/ar5/wg3/) where it is stated: "In 2010, the energy supply sector accounts for 49 % of all energyrelated GHG emissions3 (JRC / PBL, 2013) and 35 % of anthropogenic GHG emissions, up 13 % from 22 % in 1970, making it the largest sectoral contributor to global emissions."
49% of the total GHG emissions given by IPCC are 24Gt, which is in the same ballpark as IEA.
I hope this helps.
Best regards
Arnulf
Dear Mohamed,
the IEA source you cite is from 2009 and estimates the "energy related" GHG emissions. On the other hand IPCC gives the "Total annual anthropogenic GHG emissions", which includes non energy related emissions as well.
To see the energy related GHG emissions in the IPCC report, you have to look at Chapter 5 of the AR5 Climate Change 2014: Mitigation of Climate Change Report (https://www.ipcc.ch/report/ar5/wg3/) where it is stated: "In 2010, the energy supply sector accounts for 49 % of all energyrelated GHG emissions3 (JRC / PBL, 2013) and 35 % of anthropogenic GHG emissions, up 13 % from 22 % in 1970, making it the largest sectoral contributor to global emissions."
49% of the total GHG emissions given by IPCC are 24Gt, which is in the same ballpark as IEA.
I hope this helps.
Best regards
Arnulf
Dear Arnulf Jäger-Waldau
Thank you so much.
This is the sufficient answer that I was searching for. It would take long time for me to find ....................... So helpful. Appreciated.
In 2010, estimated worldwide emissions from human activities totaled nearly 46 billion metric tons of greenhouse gases, expressed as carbon dioxide equivalents. This represents a 35 percent increase from 1990.
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.epa.gov%2Fclimate-indicators%2Fclimate-change-indicators-global-greenhouse-gas-emissions&psig=AOvVaw37ZIW933GO2EGBXjgu0LpK&ust=1600402948616000&source=images&cd=vfe&ved=0CAMQjB1qFwoTCJiG5tur7-sCFQAAAAAdAAAAABAI
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