In what layer of the atmosphere does greenhouse gases trap heat radiation ?

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Question: In what layer of the atmosphere does greenhouse gases trap heat radiation?

Option 1: Mesosphere. This layer lies above the stratosphere and is not the primary region where greenhouse gases trap heat; the atmosphere here is much thinner and the greenhouse effect is less pronounced compared to the lower layers.

Option 2: Thermosphere. The thermosphere is a high-altitude layer with extremely thin air and very little greenhouse gas density; it does not play the main role in trapping heat radiation.

Option 3: Troposhere. This option appears with a spelling variation ('Troposhere'), but it refers to the troposphere, the lowest layer of the atmosphere where most greenhouse gases are concentrated and where the bulk of infrared radiation from the Earth's surface is absorbed and re-radiated, producing the familiar greenhouse effect.

Option 4: Stratoshpere. The stratosphere lies above the troposphere and contains the ozone layer; while it has different temperature dynamics, it is not the primary layer responsible for trapping the majority of heat radiation that drives the standard greenhouse effect.

Summary: The core mechanism of the greenhouse effect operates predominantly in the troposphere, where greenhouse gases absorb infrared radiation emitted by the Earth's surface and contribute to warming lower atmospheric levels and the surface; the other layers play lesser or different roles in atmospheric heat balance.

SMC 2025 Spr - GEOG 5 (3235) - Physical Geography with Lab (O) Module Quiz 4 | Unit 5

In what layer of the atmosphere does greenhouse gases trap heat radiation ?

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