GEO 110 Lecture Notes - Lecture 5: Satellite Temperature Measurements, Heat Capacity, Sea Surface Temperature
4 Feb 2020
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Sunrise - becomes positive, rising to peak at noon. Afternoon - net radiation decreases as insolation decreases. Sunset - net radiation zero - incoming and outgoing balanced. Minimum daily temperature occurs about a half hour after sunrise ( net radiation negative during the night, heat flowed from ground and cooled the surface air layer. Net radiation becomes positive, the surface warms and transfers heat to the air above. Air temperature rises sharply in the morning hours and continues to rise. Land and water contrasts long after the noon peak of net radiation. Land- radiation cannot penetrate soil or rock, so heating is concentrated just at the surface. Water - radiation penetrates below the surface, distributing heat at depth. Rock (and dry soil) - low specific heat capacity, temperature. Water - high specific heat capacity, required five times more. Water temperature remains more uniform than land increases easily as heat energy is applied energy to raise temperature temperature.
