Iceland's Yearly Greenhouse Gas Emissions in CO₂ Equivalent

✨ Key Insights

Early Industrialization and Emissions

Iceland's journey through industrialization began with notable events such as the introduction of motorized fishing vessels in 1904, which marked a shift from traditional methods to fossil fuel-powered engines. This transition contributed to an increase in CO₂ emissions, reflecting the growing industrial activities in the country. The expansion of the aluminum industry around 1940 further amplified emissions, as this energy-intensive sector relied heavily on fossil fuels and released significant amounts of CO₂ and F-gases.

Renewable Energy Transition

The late 20th century saw Iceland making strides towards renewable energy. The commissioning of the Krafla geothermal power plant in 1969 and the expansion of Reykjavik's district heating system in 1990 marked significant steps in reducing reliance on fossil fuels. These initiatives contributed to a decrease in CO₂ emissions, showcasing Iceland's commitment to sustainable energy solutions. By 2000, the increased use of hydroelectric power further supported this transition, leading to a substantial reduction in emissions.

Recent Efforts and Innovations

In recent years, Iceland has continued its efforts to combat climate change. The 2013 carbon capture and storage initiatives and the 2021 launch of the Orca carbon capture plant highlight the country's innovative approach to reducing atmospheric CO₂ levels. Additionally, the increased adoption of electric vehicles by 2020 has contributed to a decline in transportation-related emissions. These efforts align with Iceland's commitment to the Paris Agreement and its goal of achieving carbon neutrality, reflecting a proactive stance in addressing global environmental challenges.

Background

Greenhouse gas emissions from human activities are the main drivers of human-induced warming. In the scientific literature, human-induced emissions are often referred to as anthropogenic emissions.

CO₂ Fossil Fuels and Industry (CO₂ FFI)
CO₂ Land-Use, Land-Use Change and Forestry (CO₂ LULUCF)
Methane (CH₄)
Moderate: above 2.5 tonnes
Nitrous oxide (N₂O)
Fluorinated gases (F-gases)

Emissions from all different gases are expressed in CO₂-equivalent units to make it possible to compare the relative emissions from these different gases. CO₂-equivalents are calculated using the global warming potentials of the respective gases, in this case using a 100-year time horizon.

Wikipedia: Global Warming Potential

Total Historic Share

CO₂ From Fossil Fuels and Industry

The sources are mostly fossil-fuel combustion emissions from coal, oil, and gas, as well as emissions from industrial processes such as cement production. Cement also absorbs CO₂ out of the atmosphere through carbonation, which reduces emissions by about 0.8 Gt per year and is included here.

CO₂ From Land-Use, Land-Use Change, and Forestry

The main driver of these emissions is deforestation, which includes logging and forest degradation, as well as other land-use change activities. The emissions also take into account the absorption of CO₂ by processes that remove CO₂ from the atmosphere, such as afforestation and reforestation. It is the net effect that is indicated here.

Methane (CH₄)

Methane emissions are caused by human activities such as rearing livestock, agricultural practices, and fugitive fossil fuel emissions.

Nitrous Oxide (N₂O)

Common sources of these emissions are fossil fuel emissions and the agricultural use of synthetic fertilizer and manure.

Fluorinated Gases (F-gases)

Fluorinated gases are a group of gases defined by UNFCCC: hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), sulfur hexafluoride (SF6), and nitrogen trifluoride (NF3). Fluorinated gases are also known as halogenated gases.

Wikipedia: Greenhouse Gas Emissions
IPCC: Annual Report 6, 5.2.1 5.2 Historical Trends, Variability and Budgets of CO₂, CH₄ and N₂O

Units and Measures

CO₂-equivalent emissions are expressed in the total weight in megatonnes per year. 1 Megatonne is equal to 1 million tonnes.

Wikipedia: Megatonne
Wikipedia: Global warming potential

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About the Data

The last available year in all the emission datasets is 2023. CO₂ emissions data is from the Global Carbon Project. It contains national CO₂ emissions from fossil sources and land-use change. Emissions from CH₄, N₂O and F-gases come from the PRIMAP-Hist dataset. It is a rich dataset that combines several published sources to create a historical emissions time series for various greenhouse gases.

The Key Insights paragraph was generated using a large language model (LLM) using a structured approach to improve the accuracy. This included separating the context generation from the interpretation and narrative.

Data Sources

Global Carbon Budget 2024 Global Carbon Budget
Update cycle: yearlyDelay: ~ 10 months after the end of the year. Current year values are estimated and published in November.Credits: Friedlingstein et al., 2024, ESSD. Friedlingstein, P., O'Sullivan, M., Jones, M. W., Andrew, R. M., Hauck, J., Landschützer, P., Le Quéré, C., Li, H., Luijkx, I. T., Olsen, A., Peters, G. P., Peters, W., Pongratz, J., Schwingshackl, C., Sitch, S., Canadell, J. G., Ciais, P., Jackson, R. B., Alin, S. R., Arneth, A., Arora, V., Bates, N. R., Becker, M., Bellouin, N., Berghoff, C. F., Bittig, H. C., Bopp, L., Cadule, P., Campbell, K., Chamberlain, M. A., Chandra, N., Chevallier, F., Chini, L. P., Colligan, T., Decayeux, J., Djeutchouang, L., Dou, X., Duran Rojas, C., Enyo, K., Evans, W., Fay, A., Feely, R. A., Ford, D. J., Foster, A., Gasser, T., Gehlen, M., Gkritzalis, T., Grassi, G., Gregor, L., Gruber, N., Gürses, Ö., Harris, I., Hefner, M., Heinke, J., Hurtt, G. C., Iida, Y., Ilyina, T., Jacobson, A. R., Jain, A., Jarníková, T., Jersild, A., Jiang, F., Jin, Z., Kato, E., Keeling, R. F., Klein Goldewijk, K., Knauer, J., Korsbakken, J. I., Lauvset, S. K., Lefèvre, N., Liu, Z., Liu, J., Ma, L., Maksyutov, S., Marland, G., Mayot, N., McGuire, P., Metzl, N., Monacci, N. M., Morgan, E. J., Nakaoka, S.-I., Neill, C., Niwa, Y., Nützel, T., Olivier, L., Ono, T., Palmer, P. I., Pierrot, D., Qin, Z., Resplandy, L., Roobaert, A., Rosan, T. M., Rödenbeck, C., Schwinger, J., Smallman, T. L., Smith, S., Sospedra-Alfonso, R., Steinhoff, T., Sun, Q., Sutton, A. J., Séférian, R., Takao, S., Tatebe, H., Tian, H., Tilbrook, B., Torres, O., Tourigny, E., Tsujino, H., Tubiello, F., van der Werf, G., Wanninkhof, R., Wang, X., Yang, D., Yang, X., Yu, Z., Yuan, W., Yue, X., Zaehle, S., Zeng, N., and Zeng, J.: Global Carbon Budget 2024, Earth Syst. Sci. Data Discuss. [preprint], https://doi.org/10.5194/essd-2024-519, in review, 2024.

PRIMAP-hist The PRIMAP-hist national historical emissions time series (1750-2023)
Update cycle: Every few monthsDelay: Less than 1 yearCredits: Gütschow, Johannes; Busch, Daniel; Pflüger, Mika (2024): The PRIMAP-hist national historical emissions time series (1750-2023) v2.6. Zenodo.