33+ The Earth At Night Time PNG. The thermal inertia of the air and earth's surface means that of course the nighttime is not long enough for the temperature fall to anything like all the way to $t_{cmbr}$ but, as you note, it falls some of. Because at any given time, there could be a layer of cloud blocking the view of.
Nasa researchers have used these images of nighttime lights to study weather around urban areas.
This map shows the geographic distribution of night time lights in the united states, canada, mexico and the caribbean. A series of beautiful and impressive photographs from nasa which uncovers the nighttime magnificence of the earth seen from space. Physics geography astronomy maps human geography satellite. The map above shows where on earth it is currently day time, night time, or twilight.