Question 14 of 18intermediate🔧 ApplyNumerical2 marks

Calculate the daily mean monthly temperature.

Correct Answer

The daily mean monthly temperature is calculated by taking the average of the Mean of Daily Maximum Temperature and the Mean of Daily Minimum Temperature for a given month.

Formula: Daily Mean Monthly Temperature = (Mean of Daily Max. + Mean of Daily Min.) ÷ 2

Example Calculation (January):

  • Mean of Daily Max. Temperature = 21.1°C
  • Mean of Daily Min. Temperature = 7.3°C
  • Daily Mean Monthly Temperature = (21.1 + 7.3) ÷ 2 = 28.4 ÷ 2 = 14.2°C

Example Calculation (May):

  • Mean of Daily Max. Temperature = 39.6°C
  • Mean of Daily Min. Temperature = 25.9°C
  • Daily Mean Monthly Temperature = (39.6 + 25.9) ÷ 2 = 65.5 ÷ 2 = 32.75°C
Exercise: Project Work | Q: Project Work (iii) | (Page Page 8)
For More Understanding

Explanation

The textbook demonstrates the calculation of daily mean monthly temperature using data from New Delhi (Safdarjung) observatory. The method involves averaging the mean daily maximum and mean daily minimum temperatures recorded for each month. This gives a representative temperature value for the month by balancing the highest and lowest average readings.

Solution Steps

  1. Step 1: Identify the Mean of Daily Maximum Temperature from the climatological table

  2. Step 2: Identify the Mean of Daily Minimum Temperature from the climatological table

  3. Step 3: Add both values together

  4. Step 4: Divide the sum by 2 to get the daily mean monthly temperature

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