Things are heating up, and not in a good way.
Human-caused climate change has resulted in record rates of
glacial melting. (Image: © Shutterstock) |
We blazed past ominous milestones that were supposed to take decades to arrive, broke records every month, and watched the frozen North melt even faster than anticipated.
From record wildfires to a bumper crop of hurricanes to melting poles, here are some of the biggest signs in 2020 that climate change is speeding up.
Zombie storms are rising from the dead
(Image credit: NOAA/NESDIS/STAR GOES-East Band 13) |
One side effect: Tropical storms that died are being resurrected more often. Case in point: In mid-September, Tropical Storm Paulette formed as a Category 1 before strengthening, then petering out over the Atlantic Ocean five and a half days later. But Paulette was not quite dead.
Paulette opened her eye on Sept. 21, and regained strength to form into a tropical storm.
Such zombie storms used to be rare because hurricanes lost steam as they rolled north into cooler waters, but thanks to climate change, extreme ocean heating is giving them a second boost, Donald Wuebbles, a professor of atmospheric sciences at the University of Illinois at Urbana-Champaign, told Live Science.
Extreme heating in the shallow waters of the Gulf of Mexico, where many storms strengthen before slamming into the U.S., could be particularly vulnerable to climate change, Wuebbles said.
Arctic transformation may be permanent
(Image credit: NOAA/Photo courtesy of Caitlin Bailey, GFOE, The
Hidden Ocean 2016: Chukchi Borderlands) |
The Arctic report card, a yearly summary of the Frozen North's environmental status conducted in part by the National Oceanic and Atmospheric Administration, shows climate change accelerating much more rapidly than was expected.
At this pace, and without drastic action "there's no reason to think that in 30 years anything will be as it is today," Rick Thoman, an Alaska climate specialist with the International Arctic Research Center (IARC) at the University of Alaska Fairbanks (UAF), said at the time.
What does that mean? Huge swaths of ice-free seas and zombie wildfires as permanent fixtures on land, the experts said.
Godzilla can thank climate change, too
(Image credit: NASA/NOAA, Colin Seftor) |
During the month of June, a global express train of wind trapped a high-pressure system above northwest Africa, whipping up winds above the Sahara for days.
In the end, this Godzilla dust storm broke records for the biggest one ever, creating a 5,000-mile-long (8,000 kilometers) blob that darkened the skies from the Atlantic to the southeastern United States.
But why blame climate change? The whirling winds in the Sahara may have formed because sea-ice extent was extra low at that time.
This may have created a vast "anomaly" that allowed Arctic winds to creep lower on the globe than they normally do, supercharging the high-pressure system and northeasterly winds that birthed the monster dust storm.
A deadly hurricane season
(Image credit: NHC/NOAA) |
The Atlantic hurricane season shattered records with 30 named storms, many of which were strong and deadly. The next busiest season, in 2005, brought 29 named storms.
The 2020 season started early with Tropical Storm Arthur on May 16, and we barreled through all the named storms on the list by Sept. 14.
The season ended with a bang, as Hurricane Iota strengthened into a 'catastrophic' Category 5 storm — the strongest of the season — with maximum sustained winds of 160 mph (260 km/h).
The season had several other damaging and deadly storms, including Hurricanes Laura and Marco, which devastated the Gulf Coast region.
Climate change may not fuel any particular storm, and it may not even make storms more common. But accumulating evidence suggests that warming oceans will make storms stronger and more deadly on average.
Greenland may need new maps
(Image credit: Mario Tama/Getty Images) |
Greenland is losing 500 gigatons of ice every year, way more than can be made up by snowfall. And melting ice has created a giant slip n' slide for the island's massive ice sheet as it moves above the bedrock, meaning even faster melt.
If this process doesn't slow down, the coastline could look very different in the years to come, the study found.
The west was ablaze
(Image credit: NOAA) |
The biggest fire in California by far was the August Complex Fire that was sparked on Sept. 16 - 17 by massive lightning strikes, and it has since devoured more than 1 million acres (417,000 hectares) — and it is still burning. All but one of the top five fires in the state occured this year.
Explosive wildfires also erupted in Colorado, with all the state's top recorded fires happening in 2020.
Apocalyptic skies from coast to coast
(Image credit: CIRA) |
These conflagrations were visible from space, with the fast-moving California Creek Fire forming a vast fire cloud and at one point, the record-breaking hurricane season collided with the record-breaking wildfire season, creating a truly disturbing image of the twin catastrophes seen from space.
Earth breaks records left and right
(Image credit: Shutterstock) |
That's 0.05 degrees Celsius (0.09 degrees Fahrenheit) warmer than the previous record holder, September 2018.
Some of the hottest hots occurred in Siberia, where zombie fires were blazing, as well as South America, Australia and the Middle East.
Sadly, this isn't the only record-breaker this year; January and May were also the hottest on record. Los Angeles recorded its hottest temperature, a blazing 121 F (49.4 C), while in June, a small town in Siberia, the mercury hit 100.4 F (38 C). And sea ice was at a record low this year as well.
Massive Antarctic glacier in danger
(Image credit: Alex Mazur/British Antarctic Survey) |
The massive Thwaites glacier, one of the biggest on the coldest continent, is sliding into the sea, thanks to rivers of warm water that are lubricating its base.
Some of these hidden channels beneath the glacier are 800 feet (243 m) deep.
This is bad news, because the glacier is truly gigantic; if the entire hunk of ice were to fall into the ocean, sea levels could rise a whopping 25 inches (63.5 centimeters).
Earth is facing a form of heat not seen in 50 million years
(Image credit: Public domain.) |
By analyzing the chemicals in the shells of tiny sea-dwellers known as forams, which build their shells out of calcium and other elements permeating the ocean, scientists were able to recreate a record of climate on the planet going back to the Cenozoic era, when dinosaurs went extinct.
Over that time, Earth moved through Hothouse, Coolhouse, Icehouse and Warmhouse states, thanks to shifts in the planet's tilt, greenhouse gas levels in the atmosphere and the size of polar ice caps.
Those long-dead sea creatures show how anomalous our current warming is, even on geologic time scales. The current warming far outpaces normal fluctuations in the planet's temperature, and could catapult us out of our current Icehouse state into a Hothouse state, the study found.
Lost penguin colony revealed by Antarctic melt
(Image credit: Steve Emslie) |
While the northern tip of Antarctica was melting fast, Cape Irizar in southern Antarctica, flanked by the icy waters of the Ross Sea, had long been buffered from such extreme changes. But in the last decade, streamlets of meltwater have carried away snow, unveiling the bodies of those black-and-white birds.
As global heating accelerates, nesting sites for millions of penguins in northern Antarctica may disappear, but the newfound site at Cape Irizar may once again be used, Steve Emslie, a professor at the University of North Carolina, Wilmington, told Live Science.
It's not too late
(Image credit: Shutterstock) |
The U.S. could reach "net-zero" carbon emissions by 2050, a new report found. No single approach will work to stop our climate emissions — every single approach must be pursued to slow warming.
Among the steps that could help: Putting 50 million electric cars on the road, increasing electric heating in homes and quadrupling solar and wind energy generation.
And just slowing our greenhouse gas emissions may not be enough: Pulling carbon out of the air, through agricultural practices, forest replanting, carbon capture and even sucking carbon out of the rocks could also help reverse dangerous warming trends, experts told Live Science.
But to get there, we need to take steps immediately.
Links
- Zombie storms are rising from the dead thanks to climate change
- Dramatic transformation of the Arctic landscape could be permanent
- Sahara's 'Godzilla' dust storm have been triggered by warming in the Arctic
- 2020 Atlantic hurricane season shatters records
- Greenland ice melt is reshaping its coastline
- Explosive growth of Colorado wildfire seen from space
- Earth is barreling towards a 'Hothouse' state not seen for 50 million years
- Dozens of penguin 'mummies' discovered at lost nesting site in Antarctica
- Stark new imagery shows the scary extent of West Coast fires from space
- Earth just had its hottest September on record
- Rivers of warm water threaten vast Antarctic glacier