Laboratory studies of polar stratospheric cloud formation
Conference
·
OSTI ID:370007
- Univ. of Colorado, Boulder, CO (United States)
It is now well established that heterogeneous reactions on polar stratospheric clouds (PSCs) play an important role in Arctic and Antarctic ozone loss. The most common PSCs, denoted type I, form several degrees above the ice frost point and are thought to be composed primarily of nitric acid and water. Although these clouds have often been assumed to be nitric acid trihydrate (NAT) their exact composition is not known. We are using FTIR spectroscopy to study the nucleation and growth of model type I PSCs in the laboratory. We are studying both thin film samples mimicking stratospheric particulate and freely-floating sub-micrometer sized particles. The results of these studies will be discussed in the context of current theories for type I PSC formation.
- OSTI ID:
- 370007
- Report Number(s):
- CONF-960376--
- Country of Publication:
- United States
- Language:
- English
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