This densitydecrease is notable on high mountain tops (such as Mt. Finally, temperatures in the stratosphere arelethally frigid.Ģ.1.1 Air Density Change With Altitude - Thedensity of the atmosphere decreases with altitude. ![]() Second, even this toxic air is much too thin fornormal breathing. First, the ozone inthe stratosphere, which protects us from biologically destructivesolar ultraviolet light, exists at such high levels that the airitself is toxic. The stratosphere is not a good place to be. Finally,we will describe the basic regions of the stratosphere (a keybackground description for all of the subsequent sections of thisChapter). Wewill then discuss the well-mixed nature of our atmosphere. Here in thissection, we will re-emphasize some of the key points of Chapter 2with respect to mixing and transport processes in the stratosphere.We will discuss the density of air in the stratosphere, and how thetemperature structure affects the stability (or buoyancy) of air. The structureof the stratosphere is primarily discussed in Chapter 2 as part of adiscussion on the structure of the entire atmosphere. Finally, the stratosphere can be divided intofour distinct regions: (1) the tropics, which stretch from about20°N to 20°S (2) the middle latitudes or "surf zone" (3)the polar vortex and (4) the lowermost stratosphere. Third, the verylong lived gases in our atmosphere become uniformly mixed bytransport processes. This is because of the temperaturestructure there: temperatures rise with altitude. Second,stratospheric air is very stable, and vertical motion in thestratosphere is quite slow. ![]() First, stratospheric air isvery thin and becomes even thinner with increasing altitude. In order to understand transport of ozone in the stratosphere, weneed to understand some key concepts. Chapter 6 Section 2 2 - OVERVIEW OF THE STRATOSPHERE'S COMPOSITION, STRUCTURE, ANDDYNAMICS
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |