66.8 °c is the hottest alleged ground temperature that has been on earth.
66.8 °c is the hottest alleged ground temperature that has been on earth.
what has the hottest alleged ground temperature been on earth?
66.8 °c
temperatures measured directly on the ground may exceed air temperatures by 30 to 50 °c. a ground temperature of 84 °c (183.2 °f) has been recorded in port sudan, sudan. a ground temperature of 93.9 °c (201 °f) was recorded in furnace creek, death valley, california, united states on 15 july 1972; this may be the highest natural ground surface temperature ever recorded. the theoretical maximum possible ground surface temperature has been estimated to be between 90 and 100 °c for dry, darkish soils of low thermal conductivity.
extremes on earth
the history of utilizing the ground as a heat source is more recent and has gained prominence in recent years especially in rural areas where natural gas heating may not be available. the outer crust of the earth is a thermal battery that maintains a median temperature which is the same as the average air temperature at that location. this "average ground temperature" is a combination in balance of solar gain from the sun, thermal gain from the core of the earth, and heat loss due to conduction, evaporation, and radiation. the graphic at the right shows a map of the "average ground temperature" at locations within the united states.
renewable thermal energy