CU-Boulder ATOC 1050 - ATOCch6-9 (23 pages)

Previewing pages 1, 2, 22, 23 of 23 page document View the full content.
View Full Document

ATOCch6-9



Previewing pages 1, 2, 22, 23 of actual document.

View the full content.
View Full Document
View Full Document

ATOCch6-9

144 views


Pages:
23
School:
University of Colorado at Boulder
Course:
Atoc 1050 - Weather and the Atmosphere
Weather and the Atmosphere Documents

Unformatted text preview:

CH 6 7 8 9 10 16 2012 Thunderstorms contain air that is rapidly rising Stability ALONE determines location and intensity of convective storms A non atmospheric example of stability Air parcel A distinct blob of air that we will imagine we can identify as it moves through the atmosphere Doesn t exchange energy with its environment Care about it s temperature and if it is saturated unsaturated Air Parcels and Stability Stable if the parcel is displaced vertically it will return to its original position Unstable if the parcel is displaced horizontally it will accelerate 2 Neutral the parcel will stay in its new vertical location What happens to the size of an air parcel as it moves vertically in the atmosphere An air parcel will expand as it cools and rises Vertical motion causes changes of temperature because of expansion and compression What happens to the temperature of an air parcel as it expands rises or compresses sink The air parcel cools as it expands rises Air parcel warms as it compresses sinks Adiabatic a process in which an air parcel does not mix with its environment or exchange energy with its environment Lapse rate the rate as which temperature decreases lapses with increasing altitude Dry Adiabatic Lapse Rate that rate at which an unsaturated air parcel will cool if it rises or warm as it sinks Applies to an air parcel with a relative humidity of less than 100 Dry adiabatic lapse rate 10 deg How might this process be different for saturated air 3 Presence of moisture Latent heat condensation releases heat into the environment Will moist air cool faster or slower then dry air o Slower because there are two competing effects cooling form rising and heating from condensation The Moist Adiabatic Lapse rate the rate as which a saturated air parcel will cool if it rises moist adiabatic lapse rate 6 deg C km Applies to an air parcel with a relative humidity of 100 Saturated air follows the moist adiabatic lapse rate as it rises The air parcel will cool as it



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view ATOCch6-9 and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view ATOCch6-9 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?