I know the latent heat of ice is 3.33x10^5J/kg
from earth to sun is 1 AU (1.5 x 10^8km)
how will the energy is absorbed by the ice affect by it?
examples?
from earth to sun is 1 AU (1.5 x 10^8km)
how will the energy is absorbed by the ice affect by it?
examples?
-
The ice that is shadow most of the day with little or no direct exposure to direct sunlight on a north facing slope always melts last. A square meter or foot of area gets more energy from sunlight the closer the angle of sunlight falling on the surface of the area is to close 90 degrees. All the formulas are here:
http://en.wikipedia.org/wiki/Insolation
Yes, all those integral symbols are pretty intimidating. It helps if you UNDERSTAND trigonometry.
cosine of 90 degrees = 1; cosine 0 degrees = 0.
Have you ever watched what happens when snow or ice falls on concrete? It melts at first, but once the surface has cooled off, sleet, which is frozen rain, starts to accumulate, and then snow might fall on top of the sleet. When there is two inches of wet snow on top of two inches of sleet, it takes two days or more with temperatures above freezing for two or more hours per day even with direct exposure to sunlight for the snow to melt and for the sleet to start melting. It seems to take FOREVER for the ice on the north side of your apartment to melt. Forever = 5 to 12 days. with 4 to 6 hours of above freezing temperatures per day.
http://en.wikipedia.org/wiki/Insolation
Yes, all those integral symbols are pretty intimidating. It helps if you UNDERSTAND trigonometry.
cosine of 90 degrees = 1; cosine 0 degrees = 0.
Have you ever watched what happens when snow or ice falls on concrete? It melts at first, but once the surface has cooled off, sleet, which is frozen rain, starts to accumulate, and then snow might fall on top of the sleet. When there is two inches of wet snow on top of two inches of sleet, it takes two days or more with temperatures above freezing for two or more hours per day even with direct exposure to sunlight for the snow to melt and for the sleet to start melting. It seems to take FOREVER for the ice on the north side of your apartment to melt. Forever = 5 to 12 days. with 4 to 6 hours of above freezing temperatures per day.