Journal ArticleDOI
On the growth of nitric and sulfuric acid aerosol particles under stratospheric conditions
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In this article, a theory for the formation of frozen aerosol particles in the Antarctic stratosphere was developed and applied to the creation of polar stratospheric clouds, which suggests that the condensed ice particles are composed primarily of nitric acid and water, with small admixtures of sulfuric and hydrochloric acids in solid solution.Abstract:
A theory for the formation of frozen aerosol particles in the Antarctic stratosphere was developed and applied to the formation of polar stratospheric clouds. The theory suggests that the condensed ice particles are composed primarily of nitric acid and water, with small admixtures of sulfuric and hydrochloric acids in solid solution. The proposed particle formation mechanism is in agreement with the magnitude and seasonal behavior of the optical extinction observed in the winter polar stratosphere.read more
Citations
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Journal ArticleDOI
Heterogeneous physicochemistry of the polar ozone hole
TL;DR: In this paper, the authors investigated the long-term ozone trend associated with physical and chemical processes in polar stratospheric clouds (PSCs) using observations from the Airborne Antarctic Ozone Experiment.
Journal ArticleDOI
In situ measurements of total reactive nitrogen, total water, and aerosol in a polar stratospheric cloud in the Antarctic
David W. Fahey,K. K. Kelly,Guy V. Ferry,Lamont R. Poole,James C. Wilson,D. M. Murphy,M. Loewenstein,K. R. Chan +7 more
TL;DR: The data collected during these flights are analyzed and presented in this paper, focusing on the flights of Aug. 17th and 18th during which Polar Stratospheric Clouds (PSCs) were encountered containing concentrations of 0.5 to 1.0 micron diameter aerosols.
Journal ArticleDOI
Physical processes in polar stratospheric ice clouds
TL;DR: In this paper, the formation and evolution of polar stratospheric ice clouds was modeled using a one-dimensional model of cloud microphysics, and it was found that the clouds must undergo preferential nucleation upon the preexisting aerosols, just as tropospheric cirrus clouds do.
Journal ArticleDOI
Catastrophic loss of stratospheric ozone in dense volcanic clouds
TL;DR: In the midlatitude and tropical stratosphere in the presence of very large concentrations of sulfate aerosols Volcanic eruptions can increase the effective surface area of sulfuric acid so that heterogeneous reactions involving ClONO2, and secondarily N2O5, are able to suppress NO(x) abundances by more than a factor of 10 relative to gas phase chemistry.
In Partial Fulfillment of the Requirements for the Degree of
TL;DR: This research study focuses on the effects of Nano‐structure Enhanced Cathodes on Electricity Production of Two‐ Chamber Microbial Fuel Cells and research problems associated with MFC technology.
References
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Book
Microphysics of Clouds and Precipitation
TL;DR: In this article, the authors focus on one major aspect of cloud microphysics, which involves the processes that lead to the formation of individual cloud and precipitation particles, and provide an account of the major characteristics of atmospheric aerosol particles.
Journal ArticleDOI
Large losses of total ozone in Antarctica reveal seasonal ClOx/NOx interaction
TL;DR: In this article, it was shown that the very low temperatures which prevail from midwinter until several weeks after the spring equinox make the Antarctic stratosphere uniquely sensitive to growth of inorganic chlorine, ClX, primarily by the effect of this growth on the NO2/NO ratio.
Journal ArticleDOI
On the depletion of Antarctic ozone
TL;DR: The ozone depletions in Antarctica were largely confined to the region from about 10 to 20 km, during the period from August to October as discussed by the authors, and the ozone changes were observed only in the spring season.
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The physics of clouds
F. H. Ludlam,Basil John Mason +1 more
TL;DR: In the last fifteen years there has been a surge of activity in this science under the stimulus of development in civil and military aviation as discussed by the authors, and the growth of cloud physics during this period has been fostered not only by this general invigoration, but also by recognition of the practicability of exerting some influence upon the behaviour of clouds and their capacity for producing rain, hail, lightning and other meteorological phenomena.
Journal ArticleDOI
Reductions of Antarctic ozone due to synergistic interactions of chlorine and bromine
TL;DR: The vertical column density of ozone observed in October over Antarctica over Antarctica has fallen precipitously over the past 10 yr as mentioned in this paper and the concentration at Halley Bay (76 deg S, 27 deg W), expressed conventionally in Dobson units (DU), has dropped from about 300 DU in 1975 to less than 200 DU in 1984.
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