The UN chief also called on G20 leaders to ensure a stimulus of at least $500 billion per year towards meeting the Sustainable Development Goals.
Calling nature a "sacred gift from the creator," the pope urged people to take the side of the "victims of environmental and climatic injustice."
Sea ice in Antartica is steadily declining, threatening emperor penguin colonies which rely on sea ice for their breeding cycles.
El Niño, a warming of water surface temperatures in the eastern and central Pacific Ocean that returned this year, would strongly affect the region.
Scientists say climate change is making heatwaves more frequent, intense, and likely to happen across seasons, not just in what was regarded as the summer months.
This year's sea ice minimum is 20% lower than the average over the last 40 years, equivalent to a sea ice loss nearly 10 times the area of New Zealand.
Climate change report says more than 80% of the global population experienced heat conditions that would have been statistically unlikely without human-induced climate change.
"If we don't deal with [climate change], Israel will be a very unpleasant place to live in the next decade or two," Prof. Colin Price, head of Tel Aviv University's PlanNet Zero
A new study shows that there are deadly ancient microbes and pathogens trapped within the ice that is now melting due to global warming.
Gourinchas said emerging market economies also faced a "quite serious" risk of disruptions causes by any further financial market volatility, or an escalation in Russia's war in Ukraine.