Distribution of temperature and inversion of temperature

Deserts have less moisture and clouds so temperature range becomes high. In exams link deserts with high daily range.

In inversion the normal lapse condition is reversed. In exams remember cold air below and warm air above.

In temperature inversion lower air is colder than air above. In exams treat inversion as reverse of the normal rule.

On a clear calm night surface cools quickly and mixing is weak. In exams remember calm clear night for inversion.

Without clouds longwave heat escapes outward. In exams link clear nights with radiational cooling.

With less mixing cold air can remain near the surface. In exams consider calm air a condition for inversion.

During a temperature inversion, cold air remains near the ground and warmer air lies above it, so option A is correct. Normally, air temperature often decreases with height, allowing near-surface air to rise and mix. In an inversion, this usual pattern is reversed. Cold air is denser, so it settles in low areas, while the warmer layer above acts like a lid and prevents vertical mixing.

The question asks specifically where the cold air stays. It is not in the ionosphere, above clouds only, or inside the sea. Valleys and basins can especially collect cold air during an inversion. Because the lower layer is cold and dense, pollutants and fog may also remain near the surface. Therefore, “near the surface below” correctly describes the cold-air position.

In inversion the air above is warmer than the lower air. Remember warm air above and cold air below in exams.

At night cold air can drain down slopes and collect in valleys. Link valley inversion with cold air pooling in exams.

In inversion the warm layer above stops lower air from rising. Link inversion with pollution trapping in exams.

Cold surface air can reach dew point and form fog. In exams remember the relation between inversion and fog.

Cold air pooling below can make surface temperature very low. Link frost with cold surface air in exams.

Strong wind can mix cold and warm air and break inversion. In exams treat wind mixing as inversion breaking.

Clouds send back some terrestrial radiation so the surface cools less. Link cloudy nights with weaker inversion in exams.

Long clear winter nights increase surface cooling. Remember the relation between winter and inversion in exams.

Clouds can reduce solar energy by day and trap heat at night. Remember the dual role of clouds in exams.

Moisture can reduce excessive daytime heating and night cooling. Treat humidity as reducing temperature range in exams.

Dry air has lower heat retaining ability. Link dryness with higher temperature range in exams.

The combined effects of latitude and altitude explain why high places can be cooler even when they lie at the same latitude as warmer lowlands, so option A is correct. Latitude influences the amount and angle of incoming solar energy. In general, places at different latitudes receive different heating. Altitude also affects temperature: as elevation increases, air is usually cooler because pressure decreases and rising air expands.

Therefore, two locations may receive broadly similar solar influence because of similar latitude, yet the higher location can have a lower temperature. This is why mountains may be cool while nearby plains are warmer. The other options make absolute claims that do not follow from latitude and altitude. Thus, option A correctly expresses their combined effect on temperature distribution.

At the same latitude a higher place can be cooler. Remember altitude effect at same latitude in exams.

Cold air below and warm air above stop vertical motion. In exams link inversion with stable air.

In inversion cold air collects below and can increase frost. Link agricultural damage with frost in exams.

Cold air can drain down slopes and stay on the valley floor. Link valley floor with cold air pooling in exams.

Near sea temperature range may be lower and inland range may be higher. In exams link distance from sea with continentality.

Temperature distribution depends on many factors and inversion is the reverse of normal lapse condition. Study both separately but as related concepts.