2007-12-09 23:48:29 · 4 answers · asked by David F 1 in Science & Mathematics ➔ Weather
Actually temperatures DO usually cool an hour or two after sunrise, especially on clear nights, as the sun has yet to overcome "radiational cooling". Radiational cooling is the just the process of losing heat to the atmosphere, and the process is heightened on clear/calm nights. In fact, due to these processes, what is called an "inversion" usually sets up, where the temperature at the surface is actually cooler than several hundred feet in the air. Again, this is usually due to radiational cooling. So, when you are looking for your low temperature for the day, it usually occurs about an hour or two AFTER sunrise. Of course there can be a lot of variance due to clouds, fronts, etc...
2007-12-10 02:47:55 · answer #1 · answered by Qvector 2 · 1⤊ 0⤋
Because that is the time the cooling of earth stops and the heating up starts with the sunrise.
2007-12-10 04:29:33 · answer #2 · answered by Arasan 7 · 0⤊ 0⤋
Look at it like this, using a boling pot of water as an example, it is cold when you turn it on, it gradually it heats up. Llook at the point when it is at a rolling boil as noon, then you turn off the heat, sundown is when it comes back to room temperature. It is basically common sense.
2007-12-09 23:54:23 · answer #3 · answered by Monte T 6 · 0⤊ 1⤋
just a guess, i think as the air on the land warms up and rises air from the sea is drawn in to replace it, and it would be colder air
2007-12-09 23:54:26 · answer #4 · answered by grd_jck(AU) 4 · 0⤊ 1⤋