Aviation and the Global Atmosphere

Aviation and the Global Atmosphere
Surface Area Density Surface area of aerosol per unit volume of atmosphere.
Susceptibility Probability for an individual or population of being affected by an external factor.
Sustainable A term used to characterize human action that can be undertaken in such a manner as to not adversely affect environmental conditions (e.g., soil, water
quality, climate) that are necessary to support those same activities in the future.
Tropopause The boundary between the troposphere and the stratosphere, usually characterized by an abrupt change in lapse rate (vertical temperature gradient).
Troposphere The layer of the atmosphere between the Earth's surface and the tropopause below the stratosphere (i.e., the lowest 10 to 18 km of the atmosphere)
where weather processes occur.
Ultraviolet Radiation Energy waves with wavelengths ranging from about 0.005 to 0.4 µm on the electromagnetic spectrum. Most ultraviolet rays coming from the Sun
have wavelengths between 0.2 and 0.4 µm. Much of this high-energy radiation is absorbed by the ozone layer in the stratosphere.
Volatiles Particles that evaporate at temperatures less than about 100°C.
Vulnerability The extent to which climate change may damage or harm a system; it depends not only on a system's sensitivity, but also on its ability to adapt to new
climatic conditions.
Wake The turbulent region behind a body or aircraft.
Windmilling Inoperative engine with ram airflow through it.
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