1. What is Cloud Base Height?

Cloud base height is the altitude of the lowest visible part of a cloud or cloud layer. It's an important parameter for aviation, weather forecasting, and atmospheric studies.

2. How Does the Calculator Work?

The calculator uses the standard formula:

Where:

• \( T \) — Temperature in °C
• \( Td \) — Dew point in °C
• \( CB \) — Cloud base height in feet

Explanation: The formula estimates cloud base height based on the temperature-dew point spread, assuming a standard atmospheric lapse rate.

3. Importance of Cloud Base Height Calculation

Details: Accurate cloud base estimation is crucial for aviation safety, weather forecasting, and understanding atmospheric conditions. Pilots use this information for flight planning and instrument approaches.

4. Using the Calculator

Tips: Enter temperature and dew point in °C. Both values should be measured at the same location and time for accurate results. Temperature should be higher than dew point for valid calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is the formula (T-Td)/2.5 × 1000?
A: This empirical formula is based on the relationship between temperature-dew point spread and the height at which air reaches saturation, assuming a standard dry adiabatic lapse rate.

Q2: How accurate is this calculation?
A: This provides a reasonable estimate but actual cloud base can vary due to local atmospheric conditions, terrain, and other factors.

Q3: Can this formula be used for all cloud types?
A: It works best for cumuliform clouds. Stratiform clouds may have different formation mechanisms.

Q4: What if temperature equals dew point?
A: When T = Td, the relative humidity is 100% and clouds are forming at the surface (fog).

Q5: Are there limitations to this formula?
A: It assumes standard atmospheric conditions and doesn't account for inversions, fronts, or other complex meteorological situations.