Download presentation

Presentation is loading. Please wait.

1
Class 4a: Atmospheric moisture

2
Introduction to water Earth’s temperature special properties of water

3
Introduction to water Energy needed to change state

4
Evaporation How does water evaporate?

5
Evaporation Water vapor stores latent heat Vapor pressure: pressure exerted by water vapor

6
Vapor pressure

7
Evaporation How quickly does water evaporate?

8
Humidity Absolute humidity: ratio of water vapor to a given volume of air Specific humidity: ratio of water vapor to a given mass of air

9
Humidity Relative humidity: ratio of water vapor to maximum water vapor capacity

10
Dew point When air cools, water vapor capacity _____ and relative humidity _____

11
Condensation Condensation: water vapor becomes liquid, releases latent heat

12
Lapse rates Normal lapse rate: 3.5°F/1000 feet

13
Adiabatic processes Air changes temperature by convection, not conduction

14
Adiabatic processes If a rising parcel of air cools to its dewpoint, then ______ occurs

15
Adiabatic processes

16
Stability of air Buoyancy: tendency of an object to rise

17
Stability of air

18
Stability: normal lapse rate of surrounding air is less than DALR

19
Stability of air Unstable air: normal lapse rate of surrounding air is greater than DALR

20
Stability of air Conditionally unstable air: stable up to a point

21
Stability of air

Similar presentations

© 2020 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google