The Surface Temperature of Dry Ice, Solid CO2


  • Norihiko Fukuta Department of Meteorology University of Utah Salt Lake City, UT



A common misconception of dry ice temperature under cloud seeding operations has been pointed out. The widely known temperature of -78.2°C occurs only when the dry ice is under equilibrium with CO2 gas of 1 atmosphere. The temperature of falling dry ice pellets in air is decided by a steady state balance of heat conduction to and the CO2 gas diffusion from the surface. Under the free fall condition of cloud seeding, the temperature is about -100°C and is fairly insensitive to the pellet and the environmental conditions.


How to Cite

Fukuta, N. (1987). The Surface Temperature of Dry Ice, Solid CO2. The Journal of Weather Modification, 19(1), 99–101.



Scientific Papers