Nitric Acid Trihydrate (NAT) formation at low NAT supersaturation in Polar Stratospheric Clouds (PSCs)

Voigt, C.; Schlager, H.; Luo, B. P.; Dörnbrack, A.; Roiger, A.; Stock, P.; Curtius, J.; Vössing, H.; Borrmann, S.; Davies, S.; Konopka, P.; Schiller, C.; Shur, G.; Peter, T.

doi:10.5194/acp-5-1371-2005

Nitric Acid Trihydrate (NAT) formation at low NAT supersaturation in Polar Stratospheric Clouds (PSCs)

A PSC was detected on 6 February 2003 in the Arctic stratosphere by in-situ measurements onboard the high-altitude research aircraft Geophysica. Low number densities (~10-4cm-3) of small nitric acid (HNO3) containing particles (d TNAT-3.1K). This unique measurement of PSC formation at extremely l…