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Tue, 06 Dec 2022
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Snowflake Cold

Earth can regulate its own temperature over millennia, new study finds

Earth Temperature Regulation
© Christine Daniloff, MIT; NASA
A study by MIT researchers confirms that the planet harbors a “stabilizing feedback” mechanism that acts over hundreds of thousands of years to pull the climate back from the brink, keeping global temperatures within a steady, habitable range.
The Earth's climate has undergone some big changes, from global volcanism to planet-cooling ice ages and dramatic shifts in solar radiation. And yet life, for the last 3.7 billion years, has kept on beating.

Now, a study by MIT researchers in Science Advances confirms that the planet harbors a "stabilizing feedback" mechanism that acts over hundreds of thousands of years to pull the climate back from the brink, keeping global temperatures within a steady, habitable range.

Just how does it accomplish this? A likely mechanism is "silicate weathering" — a geological process by which the slow and steady weathering of silicate rocks involves chemical reactions that ultimately draw carbon dioxide out of the atmosphere and into ocean sediments, trapping the gas in rocks.

Scientists have long suspected that silicate weathering plays a major role in regulating the Earth's carbon cycle. The mechanism of silicate weathering could provide a geologically constant force in keeping carbon dioxide — and global temperatures — in check. But there's never been direct evidence for the continual operation of such a feedback, until now.

The new findings are based on a study of paleoclimate data that record changes in average global temperatures over the last 66 million years. The MIT team applied a mathematical analysis to see whether the data revealed any patterns characteristic of stabilizing phenomena that reined in global temperatures on a geologic timescale.

They found that indeed there appears to be a consistent pattern in which the Earth's temperature swings are dampened over timescales of hundreds of thousands of years. The duration of this effect is similar to the timescales over which silicate weathering is predicted to act.

The results are the first to use actual data to confirm the existence of a stabilizing feedback, the mechanism of which is likely silicate weathering. This stabilizing feedback would explain how the Earth has remained habitable through dramatic climate events in the geologic past.

"On the one hand, it's good because we know that today's global warming will eventually be canceled out through this stabilizing feedback," says Constantin Arnscheidt, a graduate student in MIT's Department of Earth, Atmospheric and Planetary Sciences (EAPS). "But on the other hand, it will take hundreds of thousands of years to happen, so not fast enough to solve our present-day issues."

The study is co-authored by Arnscheidt and Daniel Rothman, professor of geophysics at MIT.

Snowflake

2 feet of snow falls near Silver Bay, Minnesota

David Stieler (left) and Charlie Pavlisich pose for a photo after shoveling snow at Wolf Ridge Environmental Learning Center in Finland, Minn. on Wednesday.
© Pete Harris
David Stieler (left) and Charlie Pavlisich pose for a photo after shoveling snow at Wolf Ridge Environmental Learning Center in Finland, Minn. on Wednesday.
Snow continued to fall across parts of the Northland on Wednesday morning as a three-day snow event continued to add up, with two feet already fallen in parts of the Arrowhead region.

The heaviest snow totals came from the higher hills above Lake Superior's North Shore, including a report of 24 inches of snow since Monday at Lax Lake a few miles outside Silver Bay, 21 inches in Finland, 20 inches on the Gunflint Trail and 19.7 inches near Grand Marais.

The National Weather Service in Duluth posted a winter storm warning for Lake County's portion of the North Shore, where up to 8 additional inches were possible Wednesday, and a winter weather advisory for the Cook County's portion of the North Shore for another 1-3 inches of additional snow.

Light snow could continue into Thursday for much of the Northland before skies begin to clear and temperatures drop for the weekend.


Snowflake

North Shore snowfall tops 18 inches in Minnesota

Snowfall reports.
© National Oceanic and Atmospheric Administration
Snowfall reports.
Heavy "fire hose" effect snowfall on the North Shore

Crank up the lake-effect fire hose.

A concentrated plume of heavy lake-effect snow dumped 18.5 inches of snow so far this week near Hovland, east of Grand Marais along Minnesota's North Shore.

Snowfall reports are still coming in and snow is still falling in some areas, but several locations along the North Shore have already received between 6 and 14 inches of snow.

Snowflake

Southern Tasmania hit with spring snow and heavy rain as cold front moves through

Wombaticus Reeves had to be careful on the steps this morning near Vinces Saddle.

Wombaticus Reeves had to be careful on the steps this morning near Vinces Saddle.
Just days after southern Tasmania experienced its first taste of summer, the region is being slammed by wild weather, with heavy rain forecast and snow settling at higher altitudes.

Tasmania Police said snow had settled at Vinces Saddle on the Huon Highway, about 200 metres lower than initially forecast.

Parts of kunanyi/Mt Wellington have also experienced snowfall.

Bureau of Meteorology duty forecaster Michael Conway said snow was possible in elevated parts across the warning areas, including the south and south-east, lower east coast, southern midlands and central plateau.

He said this was likely to cause cooler temperatures throughout the morning.


Snowflake Cold

Eye popping snowfall totals after November blizzard slams North Dakota, NW Minnesota - 2 feet of snow recorded

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The National Weather Service is reporting some really big snowfall totals for central North Dakota into Northwestern Minnesota.

The first snowstorm of the season produced a Blizzard Warning for much of that area on Wednesday and Thursday.

The National Weather Service says Bismarck has had 24 inches of snow, Steel 22", Mandan 21", and Devils Lake 12.5". Grand Forks is at 9.1" and Roseau at 7.5".

A Winter Weather Advisory remains in place for the northern third of Minnesota until 9:00 a.m. Friday. Additional snow accumulations should be less than an inch. However, 40 mile an hour winds will blow the snow around that has already fallen.


Snowflake

Alta Ski Area, Utah has already eclipsed 100 inches of snow (they're not open yet)

alta
There are many ski areas across the mid-Atlantic and Northeast that would be absolutely thrilled to hit 100 inches of snow throughout an entire season.

Then there's Alta Ski Area, UT, who hit the mark 8 days before they even open. Yeah, you read that correctly...

Alta has seen 100 inches of snow already this Fall, and they don't plan on welcoming skiers until Friday, November 18th. Crazy, right?

Alta has seen a flurry of winter storms dump double-digit storm totals over the last three weeks, with 32 inches falling over the last 48 hours.


Snowflake Cold

33 low temperature records fall in Alberta alone - Mammoth Mountain receives 5-feet during one of the biggest November snowstorms on record

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YESTERDAY, 33 LOW TEMPERATURE RECORDS FELL IN ALBERTA ALONE

Calgary was one of 33 Alberta communities to see record-breaking daytime lows on Wednesday.

Of the record-busting communities, the coldest came out as Sundre — the small, central Albertan town plunged to a jaw-dropping -32C (-25.6F) yesterday, shaving more than 10C (17.8F) off of its previous record low of -22.1C (-7.8F).

Below, I've listed all 33 of Alberta's busted benchmarks from Wednesday, Nov 9.

Snowflake

Snow totals at ski resorts across the west are stacking up - nearly 6 feet reported at Mammoth Mountain

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© Mammoth Mountain/Andrew Miller
Mammoth Mountain
A major winter storm is currently barreling its way across the American mountain west dropping snow from the PNW down to Northern Arizona.

The bulk of the storm, at the time of writing this article, is dumping snow throughout Utah, Idaho, western Montana, and western Wyoming. The Sierras are the big winners racking up storm totals upwards of 60″.

The storm will continue to move east over the next day depositing leftovers in Colorado.

Let's take a look at the snow totals as reported by ski resorts across the west thus far to see if we can crown an unofficial winner of the storm.

Winter is here!


Umbrella

Deadly flooding triggered by record rainfall in Los Angeles as feet of snow pile up in mountains

LOS ANGELES, CA - NOVEMBER 8, 2022 - The rain seems to have created a natural car wash in Los Angeles.

LOS ANGELES, CA - NOVEMBER 8, 2022 - The rain seems to have created a natural car wash in Los Angeles.
One person is dead after a significant storm brought heavy rain and flooding to Southern California.

The significant storm brought widespread impacts to the Golden State Tuesday and is expected to continue into Wednesday. Several inches of mountain snow and torrential rains are forecast throughout California.

Southern California saw record rainfall for multiple sites across the region Tuesday. In Sandberg, 3.62 inches of rain was recorded, breaking the old daily rainfall record of 0.43" set back in 2002.


According to Ontario officials, one person died, and several others were injured after they were swept downstream by floodwaters.


Snowflake Cold

Alberta clipper leaves Saskatchewan residents digging themselves out of the snow - 8 feet high snowdrifts reported

Tisdale resident Doug Tkachuk digs his cars out of the snow after the area received about 25cm of snow overnight on Saturday.

Tisdale resident Doug Tkachuk digs his cars out of the snow after the area received about 25cm of snow overnight on Saturday.
This weekend's snowstorm caused quite the ruckus in Central Saskatchewan communities, affecting businesses, sporting events and city streets.

According to online weather reports, North Battleford saw white-out like conditions where visibility was next to zero with 12-16 centimeters of snow and winds gusting up to 65 kilometers per hour. Elsewhere like La Ronge saw 19 cm with 54 km/h winds, while the west central part of the province experienced 16-20 cm with winds exceeding 60 km/h.

Melfort and surround areas saw nearly 25 cm of snow where winds gusted up to 60 km/h. In Tisdale, the wind and snow left people like Doug Tkachuk digging out eight-feet high snow drifts. His wife, Val said he has been working non-stop clearing snow since Saturday afternoon.

"There was probably two feet of snow on top of his vehicle," she said. "He went out a couple of times last night and when he came back in, he said, 'I'm going to wait til morning and I'll go out again' and when we woke up this morning we couldn't believe it. The snow was up to my waist."