Guest essay by Eric Worrall
Professor Mark Maslin of UCL’s sermon to the climate believers that promises fire, flood, famine and devastation unless they all stick to their commitments to cut their carbon footprint and cut meat consumption.
Climate change: how bad could the future be if we don’t do anything?
May 6, 2021 10:59 p.m. AEST
Professor of Earth System Science, UCL
Year 2100: the nightmare scenario
The 21st century is coming to an end without any action to prevent climate change being taken. Global temperatures have risen by over 4 ° C. In many countries, summer temperatures remain permanently above 40 ° C. Heat waves with temperatures of up to 50 ° C are widespread in tropical countries.
Every summer, forest fires rage on every continent except Antarctica, creating sharp clouds of smoke that make it unbearable to breathe outdoors and cause an annual health crisis.
Sea temperatures have risen dramatically. After repeated bleaching incidents, the Australian Great Barrier Reef was officially declared dead.
Frequent and prolonged periods of drought plague large parts of the earth. The world’s deserts have expanded and displaced many millions of people. Around 3.5 billion people live in areas where the demand for water exceeds the available demand.
Many coastal and river areas are regularly flooded, including the Nile Delta, the Rhine Valley and Thailand. Over 20% of Bangladesh is permanently under water.
Winter storms are more forceful and release more water, causing widespread wind damage and flooding each year.
Read more: https://theconversation.com/climate-change-how-bad-could-the-future-be-if-we-do-nothing-159665
A couple of questions Professor.
- If forest fires rage on every parched continent, what exactly will they burn? I mean sure you could imagine a superfire or two scorching the land, but after a few years there would be nothing left to burn. Of course, it is possible for the survivors of the first superfires to cut off some outbreaks or do some forestry before they lose everything.
- If we have more energetic winter storms, how can we also have extreme summer droughts? I know we are talking about the wrath of nature, but will people have forgotten how to build reservoirs by 2100?
- If some areas are flooded and others left dry, have people forgotten how to build large aqueducts by 2100?
- Regarding the ocean warming you predicted, why will less than a century achieve what the entire Holocene did not? The depths of the ocean are still almost ice cold even in the tropics, as there hasn’t been enough time to warm the ocean since the end of the last ice age over 12,000 years ago. How can a few degrees extra global warming in less than a century cause a rapid and radical change in the overall temperature of the ocean?
- If the oceans warm up, how can they get more acidic? Warm water emits dissolved CO2, so that the level of dissolved CO2 in the seawater decreases. The water heats up considerably, even if the atmospheric CO2 increases.
Of course, none of these predictions are testable in any meaningful sense. Most of us will have died of old age long before 2100.