Power - Physics 101 / AP Physics 1 Review with Dianna Cowern

Why does "the atmosphere?" munch up electrons from metalic surfaces at wintertime, why does the skinn get immediately dry at very low temperature.
What does it mean is there a surplus of positive ions in atmosphere at wintertimei heard the explanation about less humidity in air but does that hold why would watermolecules make the atmosphere more in equillibrium with the surrounding?

They say that cold weather bites, so who is munching the electrons are there less free negative ions in air during wintertime?
Well they say that sun is closer during winter, just want to make sure it does not come tu eat us, is it a negative ion drag upwards in atmosphere? 
Thinking about the tribolectric series it seem some material always have surplus or minus, but what does that really mean is those surface electrons on a negative charged material a direct material property or is it a property of collecting electrons from atmosphere, i guess it collect the surplus of electrons from free ions in air, rather then an inherit material property? I mean its not possible to exhaust the surplus of electrons on surface?

https://www.youtube.com/watch?v=PIvZJ9xGutI&list=PL97BBEE588BD210AD