Posted on 11/27/2022 6:25:02 AM PST by george76
Snow extent in the Northern Hemisphere at the end of November represents an important parameter for the early winter forecast. This year snow extent is running much higher than average and according to existing global estimates, it is now beyond the highest ever observed so far. Winter forecast, especially in its early phase and in Europe, might be strongly influenced by such a large snow extent, although many other factors need attention.
SNOW EXTENT IN NOVEMBER 2022..
Northern Hemisphere snow extent is currently indeed very high, now at about 41 million square kilometers..
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Looking at the below Rutgers Daily Snow Extent map, it is clearly noticeable how Russia is completely covered in snow now. Snow is also seen overwhelming all of Canada, and Alaska, as well as a good portion of the Lower 48. This is an important parameter for the early winter forecast.
You could probably forecast a colder-than-normal winter based on Autumnal Northern Hemisphere snow cover extent alone. It’s the largest snow extent in decades. Having so much snow on the ground means any arctic outbreak is going to be a little bit colder.
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In North America snow extent for the end of November is more south than normal, especially in the North West and North East sectors of the U.S: Small and scattered negative anomalies are less significant in the picture, mostly affecting central Mongolia, North East China, and the central U.S.
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According to the Finnish Meteorological Institute, also the total snow mass for the Northern Hemisphere is tracking comfortably above the 1982-2012 average. This result is based on the current Northern Hemisphere snow-water equivalent relative to the long-term mean and variability.
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Snow extent grew pretty fast in the last 30 days, as it should generally be in this period of course, but 2022 is setting a clearly very favorable season for snow on the ground. In the video below you can see how fast the snow extent increased in the last 4 weeks.
By the way, as a curiosity, the temperature is always colder on the ground in winter and at night in calm conditions, that is without or with the very weak wind. That’s because the Earth warms up and cools off much faster than the atmosphere does. More, colder air is denser, therefore the air near the ground is colder at night than the higher air. That’s why for instance your thermometer says +1 or +2 degrees Celsius, but you might see frost on the ground.
Extensive snow extent early in the season is an indicator of persistent cold as we head into winter proper, mainly due to albedo and emissivity feedback.
Albedo is defined as the fraction of light that is reflected by a body or surface. On average, the Earth reflects about 30 percent of the sun’s radiation, but when fresh snow covers the ground that value nearly triples and it is close to 1.0. In fact, snow has the greatest albedo on Earth, from less than 0.60 for wet and melting snow to greater than 0.85 for fresh snow.
The albedo of fresh snow could be as higher as 0.95, which means it reflects back to space 95 percent of the sun’s radiation, keeping the ground and air much cooler.
It represents an important parameter in climatology since recent albedo decreases in the Arctic have increased heat absorption at the surface leading to the so-called Arctic Amplification. Practically, Arctic lands and sea are warming faster than other environments on Earth due to the positive feedback induced by the darker surface of the land and sea in summer, where there is no snow or ice on the ground or sea ice melted.
Whew! For a minute there I thought the end of snow was here. Guess we have glowbull warming, uh sorry, climate change to thank for that eh? ⛄❄🌬
If the left were smart they’d take credit of this and say their climate policies are working.
“If the left were smart...”
And we have the crux of the problem...a goal impossible for them to reach.
Our own itty bitty contribution (about 0.28%) to atmospheric warming is dwarfed by conditions like these. The earth’s governments trying to stop that tiny contribution to global warming overall is like dropping a nuke to take care of a hangnail.
Follow the Tonga Volcano of Jan. 15, 2022 when 58 billion tons of ash and vapor was pumped into the atmosphere to a height of over 126k feet. The strongest volcano in 1200 years that literally shook the planet according to experts. The Climate people never relate to this event which will have atmospheric changes for years to come. The Climate people have alter ideas about the political affects of volcanoes and its not good for Democracies.
It’s getting cold up in here!
What do we want? GLOBAL WARMING!
When do we want it? NOW!
Al Gore is deeply saddened
Climate is a dynamic, stochastic mechanism in perpetual flux.
Controlling climate is impossible.
And back to the threat of global cooling we go.
It will be a mild winter in the Northern hemisphere if the earth’s core is highly active, generates heat that vents through innumerable, unmonitored underwater Arctic “smokers” and underwater volcanoes. If the core is relatively quiescent then the winter will be harsh.
This has to be a disaster for Swiftboat Rear Admiral John F’ing Kerry as he says its global warming. He is making millions running around in his private jet telling gullible people how bad things are and billing the oountries 5 times what it costs to operate his jet.
Sorry, that’s not in our models…
Owwww! You used “stochastic” without ref to terrorists. Is that allowed? 😎👍
Bring it!
later
No snow yet in southern Arizona, though the first frost at our place was on November 3, which is a couple of weeks earlier than usual.
The left can then take credit for reducing Earth’s temperature and then at same time sky rocketing natural gas
Arthur DeVany and Nassim Taleb allowed me to…
Snow cover increases reflectivity of sunlight thus reducing absorbed energy and reducing warming. Kind of a spiral?
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