Impact of Changing Greenhouse Gas Concentrations on Ontario's Climate ...
The effect of changing greenhouse gas concentrations on climate was examined. Calculations of the climate sensitivity, the warming of the Earth due to a doubling of atmospheric CO2, are discussed. Ontario was responsible for 0.35% of the world's CO2 emissions in 2019 and this amount was 20% low...
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| Format: | Report |
| Language: | unknown |
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arXiv
2023
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| Online Access: | https://dx.doi.org/10.48550/arxiv.2305.05500 https://arxiv.org/abs/2305.05500 |
| Summary: | The effect of changing greenhouse gas concentrations on climate was examined. Calculations of the climate sensitivity, the warming of the Earth due to a doubling of atmospheric CO2, are discussed. Ontario was responsible for 0.35% of the world's CO2 emissions in 2019 and this amount was 20% lower than in 2005. The predictions of Global Climate Models (GCM) were compared to observations. Records since 1880 show an overall warming of about 1 C. The GCMs do not account for observed decadal temperature fluctuations and consistently overestimate the warming. Ontario's contribution to global warming is only 9.2 x 10^{-5} C/year using the Intergovernmental Panel on Climate Change recommended climate sensitivity value. Measurements of the polar ice caps reveal a decrease in the minimum September Arctic sea ice extent during 1979-2022 but the trend levelled off after 2007; while the average Antarctic sea ice extent slightly increased. Sea level increased slightly throughout the 20th century. Ontario's contribution to ... |
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