Physical Therapy Assistant Guide. Welcome to the PTA Guide, a physical therapy assistant education & career resource. We have everything you need to become a licensed PTA in your state. A few of the helpful things that you'll find here are information resources by state such as tools and info on PTA Schools, PTA license requirements, PTA Jobs, PTA salary data for states & major cities.
A dust devil in Ramadi, Iraq. Atmospheric instability is a condition where the Earth's atmosphere is generally considered to be unstable and as a result the weather is subjected to a high degree of variability through distance and time.hese indices, as well as atmospheric instability itself, involve temperature changes through the troposphere with height, or lapse rate. Effects of atmospheric instability in moist atmospheres include thunderstorm development, which over warm oceans can lead to tropical cyclogenesis, and turbulence.
Such big swings occur because the effects of solar heating are much more pronounced on Mars than they are on Earth. The Red Planet's surface is much drier, and its atmosphere is just 1 percent as thick as Earth's. REMS measurements also suggest that atmospheric pressure is on the rise at Gale Crater, researchers said. This information is in line with mission scientists' expectations. In winter, Mars gets cold enough for carbon dioxide at the poles to freeze, forming seasonal dry ice caps. Since carbon dioxide dominates the Red Planet's thin atmosphere, this freeze-out process causes pressures to vary from season to season.