Not sure what you mean by "catastrophic" but for example last year some parts of Siberia had +5ºC on average during summer. https://www.theguardian.com/environ

Not sure what you mean by "catastrophic" but for example last year some parts of Siberia had +5ºC on average during summer. https://www.theguardian.com/environment/2020/jul/15/climate-change-made-siberian-heatwave-600-times-more-likely-study https://www.theguardian.com/environment/2020/jul/15/climate-... This is not new and is getting worse. In 2010, Russian wildfires severely impacted the worldwide price of grain which (some people argue) helped trigger the Arab spring revolts. https://en.wikipedia.org/wiki/2010_Russian_wildfires https://en.wikipedia.org/wiki/2010_Russian_wildfires https://www.americanprogress.org/issues/security/reports/2013/02/28/54579/the-arab-spring-and-climate-change/ https://www.americanprogress.org/issues/security/reports/201...