There are three methods of heat transfer. They are conduction, convection, and radiant heat. Heat transfer to or from the earth can only be done by radiant. All material contains heat and is radiating it to cooler surfaces or absorbing it from warmer surfaces. The difference is the heat gain or loss of the material.
The earth gains heat radiated from the sun and loses heat it radiates to outer space, called black sky radiation. Outer space is considered absolute zero.
The amount of radiant heat hitting the earth from the sun daily is relatively constant. The radiant heat lost daily by the earth thru black sky radiation is constant since absolute zero is constant. The amount of heat gained by the earth’s surface depends on the surface area of the earth covered by water relative to that covered by land. Land area absorbs a larger percent of the radiant heat relative to the water area since the surface of the water reflects a percentage of the radiant heat back to outer space. The daily access heat, or loss of heat, is transferred to the oceans thru conduction and convection where it works its way to the poles and it freezes water adding to the polar ice caps or melts the polar ice caps thus keeping the temperature of the oceans, thus the earth, relatively constant. As the polar ice caps grow or melt, the surface area of the earth covered by land relative to that covered by water changes. This is the definition of global warming.
That radiant heat absorbed by oceans and land masses is transferred to the atmosphere thru conduction and convection. When it is winter in one hemisphere it is summer in the other and the same with spring and fall. I would think the average temperature of the lower 5,000 feet of the atmosphere changes about 10’F to20’F each day. This probably takes more heat than man has added to the earth in the last 50 years. That heat man adds to the atmosphere each day is radiated to the black sky and the infinitesimal amount left helps melt the ice during global warming, should be called Global Defrosting, . The scientists have taken core samples of the polar ice caps and know how close we are to the ice left at the beginning of the last ice age. That is how close we are to the end of global warming or we have already begun global cooling, should be called global ice making.
Absolute Zero is -459.68’F and the surface temperature of the sun is between 7,300’F and 10,000’F or an average of 8,650’F. If we could go back in time 12,000 years, the end of the last ice age, we would probable see that the average daily temperature of the earth was in the mid 60’F as it is today. You must understand the amount of heat gained every 24 hours is almost equal to that lost during the same 24 hours. Angle of the earth’s axis is 23.5’.
The average surface temperature of the earth is 63.5’f. The heat loss to black sky radiation every 24 hours is constant. The average radiant heat striking the surface of the earth is relatively constant. Because the sun is an active star the average temperature will change over centuries. As the surface area of the earth covered by water increases, the radiant heat reflected back to the black sky increases. When the daily radiant heat gained by the earth from the sun in 24 hours is less than that lost by the earth’s surface Global ice making will end, or has already ended.
The above chart is of an ice core sample from the Antarctic Ice. The red line, I believe shows, the CO2 level in the air trapped in the ice when it froze. The high point in the red line shows the ice formed at the beginning of the Ice Age. The low point is the ice which was formed near the beginning but is the top layer when the new Ice Age began. As you can see there are 5 high points, thus 4 Ice Ages. I believe that as the new Ice forms some of the CO2 in the new ice is absorbed into the old ice, thus the angle on the vertical line. I also believe the small ups and downs of the red line are due to the change of average temperature of the surface of the sun between the 7,300’F and 10,000’F. There is also an ice core sample from Greenland almost identical to the above. The Greenland core shows the increase in the CO2 level due to the industrial revolution in the northern hemisphere, thus the much higher CO2 level in year 0. Both core samples are taken of ice formed over land. The ice core grows from the ground and the reverse as it melts.
THIS CHART INDICATES WE HAVE BEGUN NEXT ICE AGE AND WE HAVE REACHED THE HIGH POINT OF THE OCEAN. I could not attach the charts but they are the ice core CO2 charts for tge Antarctic and Greenland.