THE DIFFERENCES BETWEEN A TEMPERATURE INCREASE OF THE EARTH’S SURFACE OF 1.5°C AND 2°C
Abstract
Climate change is already impacting our world by putting nature, wildlife, people and their homes at risk. Globally, ground air temperature has risen by approximately 1°C since the 1950s, with an uncertainty of 0.2°C, and the trend of the last 30 years has been approximately 0.2°C per decade. This means that in only 25 years there could be an increase in global temperature of 1.5°C compared to the values during the preindustrial era (1850-1900). The effects of this will be severe. Based on requests by governments, the IPCC has issued a report assessing how the impacts of a 1.5˚C temperature limit differ from a 2˚C limit, and the differences between the emission pathways for achieving these two temperature goals. This article presents the differences between the two scenarios, globally as well as regionally. In both cases, drastic action is necessary to reduce the current rate of temperature increase.
References
Cegnar, T., 2018. Podnebne razmere v svetu leta 2017. Ujma 32, 8–21, Dostopno na: http://www.sos112.si/slo/page.php?src=/ujma/article_2017.html
Levin, K., WRI, 2018. Half a Degree and a World Apart: The Difference in Climate Impacts Between 1.5˚C and 2˚C of Warming. Dostopno na: https://www.wri.org/blog/2018/10/half-degree-and-world-apart-difference-climate-impacts-between-15-c-and-2-c-warming (10. marec 2019).
Masson-Delmotte, V., Zhai, P., Pörtner, H., Roberts, D., in sod., IPCC, 2018: Summary for Policymakers. In: Global warming of 1.5°C. An IPCC Special Report on the impacts of global warming of 1.5°C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty.
NASA, Global Climate Change: Carbon Dioxide May 2019, 2019. Dostopno na: https://climate.nasa.gov/vital-signs/carbon-dioxide/ (17. junij 2019)
Urad za meteorologijo in hidrologijo, ARSO, 2018. Kaj pomeni 1,5 °C namesto 2 °C toplejše Zemljino površje za Slovenijo? Dostopno na: http://meteo.arso.gov.si/uploads/probase/www/ climate/text/sl/publications/Kaj%20pomeni%201.5%20stopinje%20za%20Slovenijo.pdf (10. marec 2019).
WWF, 2018. Our warming world: how much difference will half-a-degree really make? Dostopno na: https://www.wwf.org.uk/updates/our-warming-world-how-much-difference-will-half-degree-really-make (10. marec 2019).
Downloads
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
The articles are made available to the public under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0).
