Please find a YouTube Video link relating to the following topics and do a summa
ID: 115969 • Letter: P
Question
Please find a YouTube Video link relating to the following topics and do a summary on each link:
1. Dry and Wet Adiabatic Lapse Rates Versus Environmental Lapse Rate
2. What is atmospheric stability versus instability
3. How are clouds classified and by what specific criteria define cloud classification systems
4. Provide an example of how atmospheric instability could produce a cumulonimbus cloud and developing thunderstorm.
5. Atmospheric Lifting Mechanisms - Orographic, Frontal or Convection
6. Types of Precipitation
Explanation / Answer
1) A lapse rate is a rate at which the temperature of the atmosphere decreases as the altitude increases.The higher you are in the atmosphere the colder will be.
Environmental lapse rate: The rate at which the air temperature decreases with elevation.This refers to the rate of temperature decreasing when it is not being affected by the saturation of water vapour in the atmosphere however it can be affected by the stability of the air The dry adiabatic lapse rate is simply unsaturated. The term dry implies to parcels of air without water content. For every hundred meters, there is one degree Celsius of cooling. The higher the altitude, the lower is the pressure..The dry adiabatic lapse rate is simply unsaturated. For every hundred meters, there is one degree Celsius of cooling. The higher the altitude, the lower is the pressure. And when it descends, the normal temperature of that parcel of air will be regained. As the air rises, it cools, and when it cools it will definitely meet its dew point. The dry adiabatic lapse rate actual temperature is definitely higher than the dew point.
The atmospheric motions that occur in a stable environment are fundamentally different than those found in an unstable environment. The most profound difference between these two types of environments is the inhibition of vertical mixing in the stable environment. The lack of vertical mixing leads to a "stratified" atmosphere, where many atmospheric variables are separated into layers instead of being well-mixed. The stratification of the atmosphere when stable leads to, for instance, pollution episodes and drastic changes in wind speed and direction over short vertical distance. An example of a stratified and stable environment.Saturated, or moist, adiabatic lapse rate are parcels of air that is already moist. Thus, when it arises, it will become colder and expands. This has a saturated lapse rate of 0.5 C per 100 meters. Unlike the dry adiabatic lapse rate, this parcel of air rises slowly due to the fact that it already contains water which makes it heavy and as it rises, it loses its internal heat.
2)Air parcels can be forced to rise due to divergence aloft, for example. Parcels of warm air which rise through the lower atmosphere cool adiabatically. The rate and maintenance of any vertical uplift depend upon the temperature-density balance between the rising parcel and the surrounding air.
But there are situations in which air parcels will spontaneously rise or sink. The general topic heading for the set of processes that govern this spontaneous motion is "instability."
Stability is the state in which an air parcel finds itself colder than the air surrounding it at the same pressure (elevation). The air parcel will spontaneously sink. Stability is often linked with anticyclones when any convection currents are suppressed by sinking air to give dry, sunny conditions.
Instability is the state in which an air parcel finds itself warmer than the air surrounding it at the same pressure (elevation). The air parcel is buoyant. It will spontaneously arise. (If moisture is condensing, the resulting cloud will be cumulus, cumulus congestus or cumulonimbus (associated with thunderstorms)).
3)There are many different types of cloud which can be identified visually in the atmosphere.Clouds are classified into a system that uses Latin words to describe the appearance of clouds as seen by an observer on the ground
Mid-Level Clouds
Cloudty pesinclude: altocumulus, altostratus.
Low-Level Clouds
Cloudy pies include nimbostratus and stratocumulus.
Clouds with Vertical Development
Cloudtypesinclude: fair weather cumulus and cumulonimbus.
Other Cloud Types
Cloud types include: contrails, billow clouds, Mammatus orographic and pileus clouds.
Basing on the visual and heigh the clouds are classified
6)Types of Precipitation
Rain, snow, snow pellets, snow grains, ice crystals, Hail, Ice pellets, Drizzle, Mixed Precipitation
.
High-Level Clouds
Cloud types