Can we economically outgrow climate change damages? Not for hurricanes we can't
“So far, historical losses due to tropical cyclones have been found to increase less than linearly with a nation’s affected gross domestic product (GDP)”, Tobias Geiger explains. “However, if you analyze losses with respect to per capita income and population growth separately, this reveals a different picture: Our analysis for the United States shows that high income does not protect against hurricane losses. As the number and intensity of tropical cyclones is projected to increase under unchecked global warming, by the end of the century average hurricane losses with respect to national GDP could triple.”
The researchers worked with cutting-edge models linking the storm’s wind speed, the exposed population, and per capita GDP to reported losses, using a newly designed data set for socio-economic and hazard-related predictors. “We used information about historical hurricane tracks for the Eastern United States to identify the connection between the affected population, average per capital income and associated damages.”, Katja Frieler adds. “Finally, we applied this relationship to thousands of potential future hurricane tracks that could affect the Eastern United States until 2100 under different levels of global warming.
Climate change and its consequences: how much can we adapt to?
“Some people hope that a growing economy will be able to compensate for the damages caused by climate change – that we can outgrow climate change economically instead of mitigating it. But what if damages grow faster than our economy, what if climate impacts hit faster than we are able to adapt?,” Anders Levermann says. “We find that this is the case with hurricane damages in the United States, the hope in economic growth as an answer to climate change is ill-founded. While adaptation to unavoidable impacts of global warming is important, climate mitigation remains of vital relevance to prevent or damp still avoidable consequences”.
Article: Geiger, T.; Frieler, K.; Levermann, A. (2016): High-income does not protect against hurricane losses. Environmental Research Letters 11 084012. [DOI: 10.1088/1748-9326/11/8/084012]
Link to the article: http://iopscience.iop.org/article/10.1088/1748-9326/11/8/084012