1. What is Rainfall Calculation?

The rainfall calculation converts collected water volume over a specific area into standardized rainfall depth measurement (mm). This allows for consistent comparison of precipitation amounts across different collection areas.

2. How Does the Calculator Work?

The calculator uses the rainfall equation:

Where:

• \( Volume_{mL} \) — Collected water volume in milliliters
• \( Area_{cm²} \) — Collection area in square centimeters
• \( \frac{1}{10} \) — Conversion factor to millimeters

Explanation: The equation converts the volume of water collected over an area into an equivalent depth of rainfall in millimeters.

3. Importance of Rainfall Measurement

Details: Accurate rainfall measurement is essential for weather monitoring, agricultural planning, hydrological studies, and flood prediction.

4. Using the Calculator

Tips: Enter the collected water volume in mL and the collection area in cm². Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why measure rainfall in millimeters?
A: Millimeters provide a standardized depth measurement that's independent of collection area size, allowing comparison between different locations.

Q2: What's a typical rainfall collection area?
A: Standard rain gauges often have collection areas of 100 cm² or 200 cm² for consistency.

Q3: How accurate is this calculation?
A: Accuracy depends on precise measurement of both volume and area. The calculation itself is mathematically exact.

Q4: Can I use different units?
A: The calculator requires mL and cm². Convert other units first (1 L = 1000 mL, 1 m² = 10,000 cm²).

Q5: What affects rainfall measurement accuracy?
A: Factors include gauge placement, wind effects, evaporation, and splashing in/out of the collector.