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17447


Date: January 06, 2021 at 07:57:29
From: Wubbo, [DNS_Address]
Subject: An unusually strong warm wave heads for the Siberian Arctic Ocean, rai

URL: Link




An unusually strong warm wave heads for the Siberian Arctic Ocean, raising surface temperatures more than 20 degrees above normal

By Andrej Flis | Global weather | 04 January 2021

A strong temperature wave is developing in the Arctic circle, with surface temperatures more than 20°C above the long-term average in the Siberian sector.

The Arctic region is entirely an ocean and has no large-scale landmass. It is the smallest and shallowest of the world’s five major oceans and is also the coldest. It is also the only ocean smaller than the largest country in the world by area, Russia.

The image below shows the Arctic ocean water-free, revealing a very complex underwater terrain and marks the Arctic regions. The current warming wave will mainly move over the eastern regions, the Kara Sea, Siberian Sea, and the Laptev Sea.


arctic-ocean-regions-and-bathymetry-2021



PRESSURE DRIVES THE WEATHER

The atmosphere is constantly in motion and always trying to achieve a state of perfect balance or equilibrium. It is being “imbalanced” by the large temperature differences around the world, from the Equator to the Polar region.

These temperature differences can cause large pressure variations in the atmosphere. This can result in strong pressure systems around the world, where the wind is the main force that is trying to correct these imbalances in pressure.

We produced a pressure anomaly forecast over the Polar circle and North America for Tuesday, January 5th. It reveals a low-pressure system over the North Pole, pushing against a very large and strong high-pressure system sitting over Siberia.


arctic-circle-sea-level-pressure-anomaly-january-winter-2021


Another such pair of pressure systems can be found in the United States and Canada. There the low-pressure systems are in tandem or “imbalance” with the high-pressure systems over eastern Canada and the western Atlantic Ocean.

As we now know, the wind is the main force that is trying to correct the imbalance in pressure. ....

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---continued at link---



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17448


Date: January 06, 2021 at 20:44:59
From: sheila, [DNS_Address]
Subject: Re: An unusually strong warm wave heads for the Siberian Arctic...


thank you Wubbo, it's unusually warm here in the PNW with so much rain that now they're concerned about flooding. We went through a huge flood back in the day in N. Ca. we had to evacuate with our 3 children.
Our farm animals were mostly safe but it did drown a lot of rats from our 6 acre paradise and it was so very scary!


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[17449]


17449


Date: January 06, 2021 at 23:08:13
From: Wubbo, [DNS_Address]
Subject: Re: An unusually strong warm wave heads for the Siberian Arctic...



Sorry to hear that Sheila.. Let's hope that this time it will not lead to that.

Take care!



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