LCL is the height where air has cooled to the dew point. We can calculate LCL using temperature and dew point at the surface.

Like temperature dew point also decreases with height because of decreasing pressure. Dew point drops at the "dew Point Lapse Rate (DPLR) of 0.2 degrees C/100m (1.0 degrees C/500m)
What is the Air Temperature and Dew Point at the following heights?
Air Temp Dew Point
2000m,
1500 m,
1000 m,
500 m
surface 26 degree C 10 degrees C

To calculate the air temperature and dew point at different heights, we will use the Dew Point Lapse Rate (DPLR) of 0.2 degrees C/100m (1.0 degrees C/500m). Let's start with the given surface values:

Surface:
Air Temperature: 26 degrees C
Dew Point: 10 degrees C

Now, let's calculate the temperature and dew point at the given heights:
1. 2000m:
To calculate the air temperature, we will use the DPLR of 0.2 degrees C/100m. Since the height is 2000m, the temperature will decrease by (2000/100) * 0.2 degrees C = 4 degrees C. Therefore, the air temperature at 2000m will be 26 degrees C - 4 degrees C = 22 degrees C.

To calculate the dew point, we will use the same DPLR. Using the height of 2000m, the dew point will decrease by (2000/100) * 0.2 degrees C = 4 degrees C. Thus, the dew point at 2000m will be 10 degrees C - 4 degrees C = 6 degrees C.

2. 1500m:
Using the DPLR, the temperature will decrease by (1500/100) * 0.2 degrees C = 3 degrees C. Therefore, the air temperature at 1500m will be 26 degrees C - 3 degrees C = 23 degrees C.

Same applies to the dew point calculation: Using the height of 1500m, the dew point will decrease by (1500/100) * 0.2 degrees C = 3 degrees C. Thus, the dew point at 1500m will be 10 degrees C - 3 degrees C = 7 degrees C.

3. 1000m:
Using the DPLR, the temperature will decrease by (1000/100) * 0.2 degrees C = 2 degrees C. Therefore, the air temperature at 1000m will be 26 degrees C - 2 degrees C = 24 degrees C.

The dew point at 1000m will decrease by (1000/100) * 0.2 degrees C = 2 degrees C. Thus, the dew point at 1000m will be 10 degrees C - 2 degrees C = 8 degrees C.

4. 500m:
Using the DPLR, the temperature will decrease by (500/100) * 0.2 degrees C = 1 degree C. Therefore, the air temperature at 500m will be 26 degrees C - 1 degree C = 25 degrees C.

The dew point at 500m will decrease by (500/100) * 0.2 degrees C = 1 degree C. Thus, the dew point at 500m will be 10 degrees C - 1 degree C = 9 degrees C.

So, the calculated air temperature and dew point at the given heights are as follows:
- 2000m: Air Temperature = 22 degrees C, Dew Point = 6 degrees C
- 1500m: Air Temperature = 23 degrees C, Dew Point = 7 degrees C
- 1000m: Air Temperature = 24 degrees C, Dew Point = 8 degrees C
- 500m: Air Temperature = 25 degrees C, Dew Point = 9 degrees C