Vertical Profiles of Condensation Nuclei

摘要: Abstract Condensation nuclei measurements using a low supersaturation (∼10%) thermal gradient diffusion cloud chamber (TGDCC) and high (∼200%) expansion type instrument were compared on series of three balloon flights over Laramie, Wyoming. In general the two instruments produced similar vertical profiles but some discrepancies remain unexplained. Agreement between would indicate that supersaturations used in TGDCC still large enough to cause count essentially all particles present. The condensation (CN) counter was flown at several sites both Northern Southern Hemispheres. results existance relative maximum CN mixing ratio associated with upper equatorial troposphere what appears be worldwide constant above 20–25 km.