1. What is Rainfall Calculation?

Rainfall calculation involves summing daily precipitation measurements to determine total rainfall over a period. This fundamental meteorological measurement is crucial for agriculture, hydrology, and climate studies.

2. How Does the Calculator Work?

The calculator uses the basic rainfall summation formula:

Where:

• Daily Rainfall — Precipitation measurement for each day (mm)
• Σ — Summation of all daily values

Additional Calculations: The calculator also computes average daily rainfall and counts the number of measurement days.

3. Importance of Rainfall Measurement

Details: Accurate rainfall measurement is essential for water resource management, flood prediction, agricultural planning, and climate change monitoring.

4. Using the Calculator

Tips: Enter one daily rainfall value per line (in millimeters). The calculator will ignore any non-numeric or negative values. Results show total rainfall, average, and day count.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use?
A: The calculator uses millimeters (mm), the standard unit for rainfall measurement. 1 mm = 1 liter per square meter.

Q2: How many values can I enter?
A: There's no strict limit, but extremely large datasets may slow processing. For monthly totals, typically 28-31 values.

Q3: What if I have missing data?
A: Either leave the line blank or enter 0, depending on whether you know there was no rain that day.

Q4: Can I calculate rainfall intensity?
A: This calculator provides totals and averages. For intensity (mm/hour), you would need hourly data.

Q5: How accurate are these calculations?
A: The calculations are mathematically precise, but accuracy depends on the quality of your input data.