Question

Given below are two statements:
Statement I: A fall of minimum temperature between \(6\text{--}8^\circ\text{C}\) during night is termed as cold wave.
Statement II: A fall of minimum temperature more than \(8^\circ\text{C}\) is termed as severe cold wave.
In light of the above statements, choose the most appropriate answer from the options given below:

• A. Both Statement I and Statement II are correct
• B. Both Statement I and Statement II are incorrect
• C. Statement I is correct but Statement II is incorrect
• D. Statement I is incorrect but Statement II is correct

Hint:

In Indian agrometeorological exams, look for standard temperature departure thresholds:
Cold wave: Deviation of \(-6^\circ\text{C}\) to \(-8^\circ\text{C}\) from normal.
Severe cold wave: Deviation of more than \(-8^\circ\text{C}\) from normal.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Extreme meteorological events such as cold waves and severe cold waves pose significant risks to winter crops (Rabi crops).
The Indian Meteorological Department (IMD) defines these events based on deviations of the minimum temperature from the normal climatological averages.

Step 2: Detailed Explanation:
Statement I: According to the agricultural meteorology standards in India, a cold wave is characterized when the minimum temperature drops by \(6^\circ\text{C}\) to \(8^\circ\text{C}\) below the normal temperature.
Hence, Statement I is correct.
Statement II: A severe cold wave is declared when the departure of the minimum temperature from its normal value exceeds \(8^\circ\text{C}\).
Hence, Statement II is correct.

Step 3: Final Answer:
Both statements are correct, making option (A) the correct choice.