Physics
Scientific paper
Apr 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26..823w&link_type=abstract
Geophysical Research Letters, Volume 26, Issue 7, p. 823-826
Physics
2
Atmospheric Composition And Structure: Cloud Physics And Chemistry, Atmospheric Composition And Structure: Chemical Kinetic And Photochemical Properties, Atmospheric Composition And Structure: Troposphere-Constituent Transport And Chemistry, Atmospheric Composition And Structure: Aerosols And Particles
Scientific paper
Recent studies have suggested that nitric acid uptake by ice clouds may decrease ice evaporation rates and thereby prolong the cloud lifetimes. To test this suggestion, ice desorption rates were studied as a function of HNO3 partial pressure (10-6-10-5Torr), relative humidity (28-92%), and temperature (192-204 K) using optical interference of a helium neon laser. Ice evaporation rates in the presence of 1×10-6TorrHNO3 were indistinguishable from those of pure ice. In contrast, ice evaporation in the presence of 8×10-6TorrHNO3 resulted in lower evaporation rates by 33% relative to pure ice. Higher partial pressures of HNO3 result in a supercooled H2O/HNO3 liquid layer over ice, which may freeze to form a sealed NAT coaling. This causes a lowering of the ice evaporation rate and prolongs the lifetime of ice. Ice exposed to lower partial pressures of HNO3 will not form a liquid layer and will thus evaporate at the same rate as pure ice.
Tolbert Margaret A.
Warshawsky Matthew S.
Zondlo Mark A.
No associations
LandOfFree
Impact of nitric acid on ice evaporation rates does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Impact of nitric acid on ice evaporation rates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impact of nitric acid on ice evaporation rates will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1430662