...These tipping points (click here) can form a cascade, with each one triggering others, creating an irreversible shift to a hotter world. A new study suggests that changes to ocean circulation could be the driver of such a cascade....
A group of researchers, led by Tim Lenton at Exeter University, England, first warned in a landmark paper 11 years ago about the risk of climate tipping points. Back then, they thought the dangers would only arise when global warming exceeded 5 degrees Celsius (9 degrees Fahrenheit) above pre-industrial levels. But last week, Lenton and six co-authors argued in the journal Nature that the risks are now much more likely and much more imminent. Some tipping points, they said, may already have been breached at the current 1 degree C of warming....
Exactly. The earlier discussions of the climate crisis saw it happening much later than it actually is happening. I don't know why, zero degrees centigrade is only a smidge away from 32.1 degrees centigrade. But, that point is mute. The climate crisis is here and we are currently looking at 3 degrees C and that is catastrophic. The very correct point of view is the fact there are tipping points in the arctic, including permafrost. I am not surprised scientists are looking at the hottest year on Earth. It can be very likely that if the GHGs of the troposphere isn't mitigated, every year going forward will be the hottest on record because of the tipping points in Antarctica.
April 16, 2020
By Doyle Rice
Federal scientists (click here) announced Thursday that 2020 has nearly a 75% chance of being the warmest year on record for the planet Earth.
Already, through the first three months of the year, it's the second-warmest on record, trailing only the El Niño fueled year of 2016, the National Oceanic and Atmospheric Administration (NOAA) said.
This year's warmth is "unusual," given the lack of a strong El Niño, a natural warming of tropical Pacific Ocean water that influences temperatures worldwide, according to Deke Arndt of NOAA's National Centers for Environmental Information.
He said both February and March were the warmest months on record without an El Niño present. The long-term trend of ongoing heat the planet continues to see is primarily because of the emission of greenhouse gases from the burning of fossil fuels, he said....
