1. Ground surface inversion is also termed as radiation inversion.
2. The existence of negative lapse rate results in surface inversion.
Which of the statements given above is/are correct ?
Both 1 and 2
To determine whether the statements about the causes of ground surface inversion of temperature are correct, let's analyze each one:
- Statement 1: Ground surface inversion is also termed as radiation inversion.
Ground surface inversion, also known as radiation inversion, occurs typically at night when the ground loses heat through radiation. This leads to the cooling of the air near the surface while the air above remains warmer. Since the surface temperature becomes lower than the air above, it results in an inversion layer. Therefore, Statement 1 is correct. - Statement 2: The existence of negative lapse rate results in surface inversion.
The lapse rate is the rate at which temperature decreases with an increase in altitude. A negative lapse rate means that the temperature increases with altitude (the opposite of the normal lapse rate). This condition leads to an inversion as the cooler air is trapped below the warmer air. Thus, the existence of a negative lapse rate contributes to surface inversion. Therefore, Statement 2 is correct.
Hence, the correct answer is Both 1 and 2. Both statements correctly describe the causes of ground surface inversion of temperature.
| Option | Explanation |
|---|---|
| Both 1 and 2 | Both statements correctly explain the conditions under which ground surface inversion occurs. |
| 2 only | Incorrect because Statement 1 is also true. |
| 1 only | Incorrect because Statement 2 is also true. |
| Neither 1 nor 2 | Incorrect because both statements are true. |
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