Question

this winter may be colder that normal ​

Answer 1

Answer:

The jet stream is the result of the difference in temperature between colder northern latitudes and temperate southern latitudes. Warm air from the equator is colliding with cold air from the Arctic, and a ribbon of powerful winds runs the length of the collision. Ushered along by the rotation of the Earth, this air current is moving west to east at speeds upwards of 200 miles per hour.

The jet stream is strongest in the winter months when the temperature difference between north and south is greatest. Cold air is denser than warm air, so when the difference in temperature is greater, the difference in density is also greater, and the barrier between cold air and warm air is firmer. Think of cold air and warm air like vinegar and oil, which are kept distinct by their different densities.

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