37. The temperature at sea level on the windward side of a mountain is 28 °C and the dewpoint is 18 °C. What is the LCL?
You can read more about it here.
https://en.wikipedia.org/wiki/Lifted_condensation_level
height in meters = 125(T-Td)
T is 28; Td is 18. Solve for h in meters. I get about 1250 feet.
To calculate the LCL (Lifting Condensation Level), we need to find the temperature at which the temperature and dew point become equal.
Given:
Temperature at sea level (T) = 28 °C
Dew point (DP) = 18 °C
Step 1: Subtract the dew point from the temperature:
T - DP = 28 °C - 18 °C = 10 °C
Step 2: Divide the result by 2:
10 °C / 2 = 5 °C
Step 3: Subtract the result from the dew point:
DP - 5 °C = 18 °C - 5 °C = 13 °C
The LCL is 13 °C.
To find the LCL (Lifting Condensation Level), which represents the altitude at which moist air starts to cool enough to reach its dew point and condense into clouds, you can follow these steps:
1. Calculate the temperature difference between the air temperature and the dew point:
T_diff = T_air - T_dew
T_diff = 28 °C - 18 °C
T_diff = 10 °C
2. Use the dry adiabatic lapse rate to find the LCL:
The dry adiabatic lapse rate is approximately 9.8 °C per 1000 meters (or 3.3 °C per 1000 feet).
LCL = T_diff / (9.8 °C/1000m)
LCL = 10 °C / (9.8 °C/1000m)
LCL ≈ 1020 meters (rounded to the nearest meter)
Therefore, the LCL in this case is approximately 1020 meters above sea level.