Both affect the temperature record.
Within large cities, dark asphalt roads and parking lots will get much warmer during the day, from solar energy absorption, than a rural field with green trees and grass.
More thermal absorption during the day, followed by night time heat emissions from cement / asphalt buildings, roads, and parking lots ... will cause warming at night vs. surrounding rural areas with no cement and asphalt.
And most global warming has been at night -- night time lows becoming slightly less cold -- however greenhouse gas warming also mainly effects night time temperatures.
Economic growth increases "waste heat".
Economic growth also leads to roads, parking lots and buildings being constructed in the vicinity of land-based temperature stations.
The actual temperature of the planet is less affected than the temperature record.
That's because thermometers tend to be located near where people live and work -- they are not distributed at random.
People live on a very tiny percentage of the planet.
"Waste heat" is released when we generate and use energy – even clean energy -- to warm and air condition buildings, and from engines and power plants around us.
Any kind of energy consumption generates heat.
Anthropogenic (man made) heat is usually generated close to where people live, which is where thermometers are located.
Raw urban surface temperatures are adjusted downwards, in an attempt to eliminate urban warming from the surface temperature record ... but economic growth-caused warming effects around temperature stations require more than wild guess adjustments -- the temperature stations must be moved to a better site.
The US has the best surface temperature station network in the world ... yet a large majority of our thermometers are improperly sited, mainly because of economic growth around them.
See the excellent report at link ... followed by photos of a temperature station next to a road where cars stop for a traffic light, and another temperature station next to a house !
https://wattsupwiththat.files.wordpress.com/2009/05/surfacestationsreport_spring09.pdf
