Question:

Why is it still cold in the northern hemisphere when it's tilted towards the sun?

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  1. There is a lag effect between the time that solar energy increases over an area, and the resultant increase in outgoing energy (heat).  So even though more solar energy is being received and absorbed over a given area of the northern hemisphere now, it takes about 4 to 6 weeks for the surface to respond with a balancing amount of outgoing radiation (heat).  This is why the warmest time of day is typically late afternoon, and the warmest time of year is not on the Solstice (late June) but in late July/early August.


  2. The northern hemisphere is not completely tilted towards the sun;it is only partially tilted towards the sun as the sun does not shine overhead beyond the tropic of cancer(23.5 degree latitude N) during the entire summer period.So, the places located beyond the tropic of cancer gets the solar radiation at an inclined angle.As the inclination increases towards the poles ,the amount of solar radiation received on a given area also diminishes.So,cold conditions increase towards the poles,even though the northern hemisphere is tilted towards the sun.

  3. There is a lag. That's why July/Aug are usually hotter than June.

  4. the world is 70 someodd % water. if you've ever felt a pot of water that was boiling 2 hours ago, it's very good with retaining it's temperature. it will also keep a low temperature for a long time. land also does the same thing but not quite as much, (that's why it gets so much hotter in the midwest than in florida)

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