According to the new research, 50 years from now, if greenhouse gas emissions continue unabated and as Earth's land surface continues to warm, the area of uninhabitable land will expand drastically.
Since 1880, average global temperatures have increased by about 1 degrees Celsius (1.7° degrees Fahrenheit). Global temperature is projected to warm by about 1.5 degrees Celsius (2.7° degrees Fahrenheit) by 2050 and 2-4 degrees Celsius (3.6-7.2 degrees Fahrenheit) by 2100.
Global warming increases the risk of more frequent—and heavier—rainfall, snowfall, and other precipitation. And as that risk increases, so too does the risk of flooding.
State-of-the-art climate models suggest that this will result in an increase of about 3.5oF in global temperatures over the next century. This would be a rate of climate change not seen on the planet for at least the last 10,000 years.
Even if the goals of the Paris Climate Agreement are met, by 2050 we will globally be looking at heat waves that are dangerous for human health, changes in patterns of rainfall and snowfall, more intense storms, and changes in the distribution, and even extinctions, of various plants and animals--including human ...
With world temperatures set to rise more over the next 50 years than they have in the previous 6,000, scientists agree that far worse is still to come. Today, just one percent of the planet falls within so-called “barely liveable” hot zones: by 2050, the ratio could rise to almost twenty percent.
They predict that in three decades, more than 100 million Americans will live in an “extreme heat belt” where at least one day a year, the heat index temperature will exceed 125° Fahrenheit (52° Celsius) — the top level of the National Weather Service's heat index, or the extreme danger level.
Under a 2050 climate scenario developed by NASA, continuing growth of the greenhouse emission at today's rate could lead to additional global warming of about 1.5 degrees Celsius by 2050.
Yet for 40 years, climate scientists have repeated the same unsatisfying answer: If humans double atmospheric carbon dioxide (CO2) from preindustrial levels, the planet will eventually warm between 1.5°C and 4.5°C—a temperature range that encompasses everything from a merely troubling rise to a catastrophic one.
Out of those, one regional and three global climate elements are estimated to likely pass a tipping point if global warming reaches 1.5 °C (2.7 °F), namely Greenland ice sheet collapse, West Antarctic ice sheet collapse, tropical coral reef die off, and boreal permafrost abrupt thaw.
Some parts of the world will be uninhabitable by 2050 due to climate change, according to NASA. NASA recently published a map of the world showing the regions that will become uninhabitable for humans by 2050.
In about 1 billion years, our planet will be too hot to maintain oceans on its surface to support life. That's a really long time away: an average human lifetime is about 73 years, so a billion is more than 13 million human lifetimes.
By 2050, due to the lack of greenery, concrete forests will be made in its place. At this time there will be such a shortage of land that many big buildings will be cultivated to meet the needs of food and drink. According to a US report, the sea level will increase by 2050.
According to the new research, 50 years from now, if greenhouse gas emissions continue unabated and as Earth's land surface continues to warm, the area of uninhabitable land will expand drastically.
Eventually humans will go extinct. At the most wildly optimistic estimate, our species will last perhaps another billion years but end when the expanding envelope of the sun swells outward and heats the planet to a Venus-like state. But a billion years is a long time.
Climate Change Over the Past 100 Years. Global surface temperature has been measured since 1880 at a network of ground-based and ocean-based sites. Over the last century, the average surface temperature of the Earth has increased by about 1.0o F.
Conditions were also frequently sweltering between 500 million and 250 million years ago. And within the last 100 million years, two major heat spikes occurred: the Cretaceous Hot Greenhouse (about 92 million years ago), and the Paleocene-Eocene Thermal Maximum (about 56 million years ago).
While the effects of human activities on Earth's climate to date are irreversible on the timescale of humans alive today, every little bit of avoided future temperature increases results in less warming that would otherwise persist for essentially forever.
As a result, six of the seven largest economies in the world are projected to be emerging economies in 2050 led by China (1st), India (2nd) and Indonesia (4th) The US could be down to third place in the global GDP rankings while the EU27's share of world GDP could fall below 10% by 2050.
There will be more plastic than fish
Rivers of pollution flow into the ocean every day, with little sign of slowing down. Marine animals and birds now regularly eat plastic, and so do humans. It is estimated that by 2050 there could be more plastic in the sea than fish. As the plastic piles up, fish disappear.
2070 will be marked by increased acidification of oceans and slow but remorseless sea-level rise that will take hundreds if not thousands of years to reverse – a rise of more than half a metre this century will be the trajectory. “It's a very different world,” Thorne says.
Changes to the Seasons
In general, summer temperatures will arrive earlier than they currently do, especially at high latitudes. Additionally, they will be hotter and last longer than they do now. Future winters will arrive later and be shorter and warmer.
The average annual temperatures experienced by people, the study says, are likely to rise about 7.5 degrees Celsius by 2070. “It's reasonable to conclude that if something has been reasonably stable for 6,000 years, we're not going to change it painlessly or quickly,” Kohler said.