nate aiid Society Clouds & Diabatie and Adiabatic Processes Let\'s imagine we ha
ID: 299851 • Letter: N
Question
nate aiid Society Clouds & Diabatie and Adiabatic Processes Let's imagine we have an air parcel at the surface whose temperature is 25°C and whose dew point temperature is 20°C. If this parcel were to rise from the surface, would it cool at the dry adiabatic lapse rate or the moist adiabatic lapse rate and why? (2 pts.) 2) The parcel is now lifting and cooling at the correct lapse rate. If the air parcel is unsaturated does the LCL represent in terms of air parcel humidity, and why is it important for cloud formation? (5 pts.) when it begins its ascent, it may rise all the way to its Lifting Condensation Level (LCL). What 3) Once our air parcel reaches the LCL will it cool at the dry adiabatic lapse rate or moist adiabatic lapse rate and why? (2 pts.)Explanation / Answer
ANSWER :
It will cool at dry adiabatic lapse rate . because before the reach to the dew point , th air parcel must be unsaturated with the moisture contain within it (therefore cloud not possible to form ) Hence , here air parcel must cool at dry adiabatic lapse rate .
2. The parcel is now lifting and cooling at the correct lapse rate . If the air parcel is unsaturated when it begins its ascent, it may all the way to its Lifting Condensation Level (LCL). What does LCL represents in terms of air parcel humidity and why is it important for cloud formation .
ANSWER :
The lifting condensation level (LCL) is formally defined as the height at which the relative humidity (RH) of an air parcel will reach 100% with respect to liquid water when it is cooled by dry adiabatic lifting .
It is very important for formation of cloud because when air containing water vapor is lifted to cool at the dry adiabatic lapse rate , reaches its dew point temperature ( this is corresponding to the LCL ) , saturation occurs , and therefore water droplets begin to condense inside the rising parcel and forming a cloud
3. Once our air parcel reaches the LCL , will it cool at the dry adiabatic lapse rate or moist adiabatic lapse rate and why ?
ANSWER :
Once our air parcel reaches the LCL , then it will cool at the moist adiabatic lapse rate because at the LCL point the parcel becomes fully saturated with its water . therefore after this level cloud form or excesses water from cloud by releasing latent heat energy . thereforeit will cool at the moist adiabatic lapse rate .
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