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Questions tagged [winter]

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11 votes
2 answers
2k views

Is a heat wave in the Northern Hemisphere likely to be accompanied by a cold wave in the Southern Hemisphere?

I grew up and live in the Northern Hemisphere. In high school, I first learned that the northern and southern hemispheres have opposite seasons. I thought it interesting how this might imply that the ...
hb20007's user avatar
  • 273
0 votes
0 answers
45 views

Arctic polar vortex collapse

What if the Arctic vortex collapses (not forming during cold months) due to anthropogenic global warming and the warming of the Arctic Ocean? If it "dies" in the coming decades, is it likely ...
blablablanos's user avatar
2 votes
0 answers
240 views

Why are nocturnal winter clouds so bright or so easily illuminated at night, compared to clouds in the summer?

In the winter when it's overcast, clouds at night are much brighter or more easily illuminated (unsure if they appear above cities/towns only) than in summer, making them look orange at night. I don't ...
Giovanni's user avatar
  • 175
2 votes
0 answers
121 views

Urban heat island effect during winter time?

Say a given populated area is considered an "urban heat island", this would mean that during summer, temperatures will be higher in that area. But what about winter? One could argue that ...
Stackaloo's user avatar
5 votes
1 answer
446 views

Are halcyon days an actual phenomenon?

According to Greek mythology, halcyon days are the seven days in winter when storms never occur. [Wikipedia] I assume that Ancient Greeks noticed a period in winter during which the weather was ...
hb20007's user avatar
  • 273
4 votes
0 answers
262 views

As small streams freeze solid, how can big rivers continue to carry water?

In areas of very cold temperatures (-20°C and below), it is not uncommon for small streams to freeze completely (as in, from top to bottom) and larger rivers to develop thick ice covers. However, ...
Callid's user avatar
  • 41
1 vote
2 answers
284 views

Why is the ice on a frozen lake sometimes cracked?

The YouTube video Skating Lake Baikal, the world's deepest lake - BBC News shows a very heavily cracked lake. It doesn't just appear to be a fault line. It appears to be an actual crack that started ...
Timothy's user avatar
  • 318
1 vote
1 answer
77 views

How big of an event is needed to trigger a long winter?

Could a small meteor or natural nuclear explosion melt an ice cap on Earth to trigger a mini ice age without the event being observed by people? Can the Earth have an overlaying thermal cycle that ...
Muze's user avatar
  • 1
14 votes
1 answer
5k views

Why does the frost depth increase when the surface temperature warms up?

We've had an unusual winter this year, with a late cold snap that is causing people's underground water lines to freeze. Now that the weather has warmed up quite a bit, even more people's lines are ...
ShemSeger's user avatar
  • 635