Laboratory studies of nitric acid hydrate and sulfuric acid aerosols: Implications for polar stratospheric cloud formation
Conference
·
OSTI ID:214616
- Univ. of North Carolina, Chapel Hill, NC (United States)
The optical properties of atmospheric aerosols are important in a number of modeling and remote sensing applications. We have devised a new approach for determining the frequency dependent real and imaginary refractive indices directly from the observation of the infrared spectra of the aerosols. We have applied this method to the study of water ice aerosols and comparisons with previous measurements confirm that the method is sound and accurate. The temperature dependence of the refractive index of ice has also been measured over the range 130 K to 210 K, which includes the region of interest for the study of Polar Stratospheric Clouds (PSC`s). The method has also been applied to the study of nitric acid dehydrate (NAD) and nitric acid trihydrate (NAT). Sulfuric acid/nitric acid/water ternary systems are also being studied with the aim of determining the nature of the phases formed and the associated freezing points as a function of the concentrations of the acids.
- OSTI ID:
- 214616
- Report Number(s):
- CONF-950801--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Laboratory studies of polar stratospheric cloud formation
Balloon observations of nitric acid aerosol formation in the Arctic stratosphere: I. Gaseous nitric acid
Growth of nitric acid hydrates on thin sulfuric acid films
Conference
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:215125
Balloon observations of nitric acid aerosol formation in the Arctic stratosphere: I. Gaseous nitric acid
Journal Article
·
Wed Aug 01 00:00:00 EDT 1990
· Geophysical Research Letters (American Geophysical Union); (USA)
·
OSTI ID:6252505
Growth of nitric acid hydrates on thin sulfuric acid films
Journal Article
·
Sun May 15 00:00:00 EDT 1994
· Geophysical Research Letters (American Geophysical Union); (United States)
·
OSTI ID:6795175